subject:(substrate loss)

1. Gacim, Fadoua. Modelling, characterisation and optimization of substrate losses in RF switch IC design for WLAN applications : Modélisation, Charactérisation et optimisation des effets associés au substrat au sein d’un commutateur RF utilisé pour des applications WLAN.

Degree: Docteur es, Electronique, microelectronique, optique et lasers, optoelectronique microondes, 2017, Normandie

URL: http://www.theses.fr/2017NORMC268

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Cette thèse est une étude sur la caractérisation, la modélisation et l’optimisation des effets substrat dans les circuits intégrés, dédies à des applications WLAN.L’objectif de… (more)

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Cette thèse est une étude sur la caractérisation, la modélisation et l’optimisation des effets substrat dans les circuits intégrés, dédies à des applications WLAN.L’objectif de ces travaux de recherche est de développer une nouvelle méthodologie d’extraction qui prenne en compte tous les parasites ; à savoir les modèles RLCK distribués, les effets électromagnétiques, ainsi que le couplage substrat.Les effets substrat ont été optimisés grâce au développement de nouvelles structures d’isolation utilisant des tranches profondes d’isolation (DTI).La prédictibilité des simulations circuits a été améliorée grace à l’introduction d’une nouvelle méthodologie d’extraction, basée sur une approche quasi-statique prenant en compte avec précision la description exacte et complète du procédé BiCMOS ainsi que les pertes dans le substrat, aussi bien diélectriques que résistives.La validité de cette méthodologie a été évaluée en comparant les résultats de simulation avec les mesures sur silicium. La bonne corrélation des résultats démontre la pertinence de cette nouvelle méthodologie. Cette méthode permet de plus, de réduire le « time to maket » grâce à l’optimisation des temps de simulations.

This thesis is about characterization, modelling and optimization of substrate effects in integrated circuits, dedicated to WLAN applications.The objective of this thesis is to develop a new extraction methodology that takes into account all parasites; distributed RLCK models, electromagnetic effects, as well as substrate coupling.Substrate effects have been optimized through the development of a new insulation strategies using deep isolation isolation (DTIs).The circuit predictability has been improved thanks to the development of a new extraction methodology, based on a quasi-static approach taking into account the complete description of the BiCMOS process as well as the substrate loss, both capacitive and resistive effects.The validation of this methodology was evaluated by comparing simulation results with silicon measurements. The good correlation of the obtained results demonstrates the accuracy of this new methodology. This method also makes it possible to reduce the time to market thanks to the optimization of the simulation times.

Advisors/Committee Members: Descamps, Philippe (thesis director), Tesson, Olivier (thesis director).

Subjects/Keywords: Substrat; Modélisation substra; Couplage electromagnetique; Tranche profonde d'isolation; Commutateur; Couplage substrat; Pertes; Substrate; Substrate modelling; Electromagnetic couplings; Deep Trench Isolation; DTI; Switches; Substrate Couplings; Loss; Isolation; Finite Element Method; FEM; Inhomogeneous substrate modelling; RFIC

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gacim, F. (2017). Modelling, characterisation and optimization of substrate losses in RF switch IC design for WLAN applications : Modélisation, Charactérisation et optimisation des effets associés au substrat au sein d’un commutateur RF utilisé pour des applications WLAN. (Doctoral Dissertation). Normandie. Retrieved from http://www.theses.fr/2017NORMC268

Chicago Manual of Style (16^th Edition):

Gacim, Fadoua. “Modelling, characterisation and optimization of substrate losses in RF switch IC design for WLAN applications : Modélisation, Charactérisation et optimisation des effets associés au substrat au sein d’un commutateur RF utilisé pour des applications WLAN.” 2017. Doctoral Dissertation, Normandie. Accessed December 13, 2019. http://www.theses.fr/2017NORMC268.

MLA Handbook (7^th Edition):

Gacim, Fadoua. “Modelling, characterisation and optimization of substrate losses in RF switch IC design for WLAN applications : Modélisation, Charactérisation et optimisation des effets associés au substrat au sein d’un commutateur RF utilisé pour des applications WLAN.” 2017. Web. 13 Dec 2019.

Vancouver:

Gacim F. Modelling, characterisation and optimization of substrate losses in RF switch IC design for WLAN applications : Modélisation, Charactérisation et optimisation des effets associés au substrat au sein d’un commutateur RF utilisé pour des applications WLAN. [Internet] [Doctoral dissertation]. Normandie; 2017. [cited 2019 Dec 13]. Available from: http://www.theses.fr/2017NORMC268.

Council of Science Editors:

Gacim F. Modelling, characterisation and optimization of substrate losses in RF switch IC design for WLAN applications : Modélisation, Charactérisation et optimisation des effets associés au substrat au sein d’un commutateur RF utilisé pour des applications WLAN. [Doctoral Dissertation]. Normandie; 2017. Available from: http://www.theses.fr/2017NORMC268

University of Kentucky

2. Wang, Jianing. THE DIFFERENCES BETWEEN IRON AND IRON-SUBSTITUTED MANGANESE SUPEROXIDE DISMUTASE WITH RESPECT TO HYDROGEN PEROXIDE TREATMENT.

Degree: 2014, University of Kentucky

URL: http://uknowledge.uky.edu/chemistry_etds/37

► Iron-substituted manganese superoxide dismutase (Fe(Mn)SOD) was produced using an in vivo preparation method. It’s an inactive enzyme in catalyzing superoxide radical dismutation owing to the… (more)

Subjects/Keywords: Iron-substituted manganese superoxide dismutase; Hydrogen peroxide treatment; Tryptophan modification; secondary structure loss; Alternate substrate oxidation; Biochemistry

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wang, J. (2014). THE DIFFERENCES BETWEEN IRON AND IRON-SUBSTITUTED MANGANESE SUPEROXIDE DISMUTASE WITH RESPECT TO HYDROGEN PEROXIDE TREATMENT. (Masters Thesis). University of Kentucky. Retrieved from http://uknowledge.uky.edu/chemistry_etds/37

Chicago Manual of Style (16^th Edition):

Wang, Jianing. “THE DIFFERENCES BETWEEN IRON AND IRON-SUBSTITUTED MANGANESE SUPEROXIDE DISMUTASE WITH RESPECT TO HYDROGEN PEROXIDE TREATMENT.” 2014. Masters Thesis, University of Kentucky. Accessed December 13, 2019. http://uknowledge.uky.edu/chemistry_etds/37.

MLA Handbook (7^th Edition):

Wang, Jianing. “THE DIFFERENCES BETWEEN IRON AND IRON-SUBSTITUTED MANGANESE SUPEROXIDE DISMUTASE WITH RESPECT TO HYDROGEN PEROXIDE TREATMENT.” 2014. Web. 13 Dec 2019.

Vancouver:

Wang J. THE DIFFERENCES BETWEEN IRON AND IRON-SUBSTITUTED MANGANESE SUPEROXIDE DISMUTASE WITH RESPECT TO HYDROGEN PEROXIDE TREATMENT. [Internet] [Masters thesis]. University of Kentucky; 2014. [cited 2019 Dec 13]. Available from: http://uknowledge.uky.edu/chemistry_etds/37.

Council of Science Editors:

Wang J. THE DIFFERENCES BETWEEN IRON AND IRON-SUBSTITUTED MANGANESE SUPEROXIDE DISMUTASE WITH RESPECT TO HYDROGEN PEROXIDE TREATMENT. [Masters Thesis]. University of Kentucky; 2014. Available from: http://uknowledge.uky.edu/chemistry_etds/37

University of Alberta

3. Kalantari, Fatemeh. Radio Frequency Characterization and Modelling of Low Temperature Co-Fired Ceramic (LTCC) Material and Devices.

Degree: MS, Department of Electrical and Computer Engineering, 2013, University of Alberta

URL: https://era.library.ualberta.ca/files/5m60qt08t

► The focus of this dissertation is on the characterization of Low Temperature Co-fired Ceramic (LTCC) for microwave and Radio Frequency (RF) applications. The LTCC substrates’… (more)

Subjects/Keywords: CBCPW Electromagnetics Simulation; LTCC Dielectric Characterization; Dielectric Constant and Loss Tangent Calculations; Substrate Material Measurement Techniques

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APA (6^th Edition):

Kalantari, F. (2013). Radio Frequency Characterization and Modelling of Low Temperature Co-Fired Ceramic (LTCC) Material and Devices. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/5m60qt08t

Chicago Manual of Style (16^th Edition):

Kalantari, Fatemeh. “Radio Frequency Characterization and Modelling of Low Temperature Co-Fired Ceramic (LTCC) Material and Devices.” 2013. Masters Thesis, University of Alberta. Accessed December 13, 2019. https://era.library.ualberta.ca/files/5m60qt08t.

MLA Handbook (7^th Edition):

Kalantari, Fatemeh. “Radio Frequency Characterization and Modelling of Low Temperature Co-Fired Ceramic (LTCC) Material and Devices.” 2013. Web. 13 Dec 2019.

Vancouver:

Kalantari F. Radio Frequency Characterization and Modelling of Low Temperature Co-Fired Ceramic (LTCC) Material and Devices. [Internet] [Masters thesis]. University of Alberta; 2013. [cited 2019 Dec 13]. Available from: https://era.library.ualberta.ca/files/5m60qt08t.

Council of Science Editors:

Kalantari F. Radio Frequency Characterization and Modelling of Low Temperature Co-Fired Ceramic (LTCC) Material and Devices. [Masters Thesis]. University of Alberta; 2013. Available from: https://era.library.ualberta.ca/files/5m60qt08t

University of Oulu

4. Tuovinen, T. (Tommi). Operation of IR-UWB WBAN antennas close to human tissues.

Degree: 2014, University of Oulu

URL: http://urn.fi/urn:isbn:9789526205922

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Abstract In this dissertation, the operation of planar impulse radio (IR) ultra wideband (UWB) antennas is examined for use in wireless body area networks (WBANs).… (more)

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Abstract In this dissertation, the operation of planar impulse radio (IR) ultra wideband (UWB) antennas is examined for use in wireless body area networks (WBANs). The objective of the thesis is to consider electromagnetic phenomena due to coupling between an antenna and human body tissues and to analyse the challenges of wideband radiators. The aim is to understand the fundamental behaviour of an antenna in a WBAN, focusing on off-body and on-body communications. The thesis premises follow the international WBAN standard 802.15.6-2012 by the Institute of Electrical and Electronics Engineering (IEEE) and the Federal Communications Commission’s (FCC) UWB regulations (3.1–10.6 GHz). In the examinations, the frequency-dependent modelling of human tissues is considered. The impact of the variation of tissue layer thickness on the performance of an antenna is depicted. The demonstration of the impact of antenna input power is given in terms of generation of heat in tissues and specific absorption rate (SAR). In order to theoretically contemplate the effect of reflections due to tissues on antenna patterns, the opportunities to influence polarization with an artificially anisotropic substrate are derived. With the proposed method, not earlier proposed for WBAN antennas, the smooth patterns without pattern minima can be achieved over the FCC UWB bandwidth. In addition, a theoretical two-path model is applied to the estimation of the antenna pattern shape close to tissues. Various antenna parameters are explored as a function of the use distance to tissue surface to demonstrate the behaviour in the vicinity of a body. The size of the reactive near-field is an important factor for the evaluation of satisfactory on-body performance. The proportions of absorption, mismatch and body losses are analysed close to a body. The connection between the complex input impedance and the dimensions of planar antennas is analysed by using lumped-element equivalent circuits. The impact of the actual width and length of the radiator on the impedance behaviour is presented for the first time. In addition, impedance is analysed in terms of capacitance, inductance and resistance within the reactive near-field for the first time. In order to understand the impact of tissues close to the antenna, the parasitic components for the stages in equivalents are proposed.

Tiivistelmä Tässä väitöskirjassa tarkastellaan laajakaistaisten impulssiradioantennien (IR-UWB) toimintaa langattomissa kehoverkoissa (WBAN). Työn tavoitteena on tarkastella antennin ja ihmiskudoksen kytkeytymisestä johtuvia sähkömagneettisia ilmiöitä ja analysoida laajakaistaisen säteilijän haasteet. Päämääränä on ymmärtää antennin suorituskyky kontekstissa ja kohdeympäristöksi on fokusoitu toiminta kehon pinnalla (on-body) ja keholta poispäin seuraavaan liityntäpisteeseen (off-body). Tutkimustyö pohjautuu IEEE802.15.6-2012-standardiin sekä FCC:n UWB -säännöksiin. Väitöstyössä tarkastellaan taajuusriippuvan ihmiskudoksen mallintamista. Ihmiskudoskerrosten paksuuden vaikutusta…

Advisors/Committee Members: Iinatti, J. (Jari), Berg, M. (Markus).

Subjects/Keywords: anisotropic substrate; body loss; equivalent circuits; planar antenna; wideband antenna; epäisotrooppinen substraatti; kehohäviöt; laajakaistainen antenni; planaarinen antenni; vastinpiirit

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Tuovinen, T. (. (2014). Operation of IR-UWB WBAN antennas close to human tissues. (Doctoral Dissertation). University of Oulu. Retrieved from http://urn.fi/urn:isbn:9789526205922

Chicago Manual of Style (16^th Edition):

Tuovinen, T (Tommi). “Operation of IR-UWB WBAN antennas close to human tissues.” 2014. Doctoral Dissertation, University of Oulu. Accessed December 13, 2019. http://urn.fi/urn:isbn:9789526205922.

MLA Handbook (7^th Edition):

Tuovinen, T (Tommi). “Operation of IR-UWB WBAN antennas close to human tissues.” 2014. Web. 13 Dec 2019.

Vancouver:

Tuovinen T(. Operation of IR-UWB WBAN antennas close to human tissues. [Internet] [Doctoral dissertation]. University of Oulu; 2014. [cited 2019 Dec 13]. Available from: http://urn.fi/urn:isbn:9789526205922.

Council of Science Editors:

Tuovinen T(. Operation of IR-UWB WBAN antennas close to human tissues. [Doctoral Dissertation]. University of Oulu; 2014. Available from: http://urn.fi/urn:isbn:9789526205922

Georgia Tech

5. Raieszadeh, Mina. High-Q Integrated Inductors on Trenched Silicon Islands.

Degree: MS, Electrical and Computer Engineering, 2005, Georgia Tech

URL: http://hdl.handle.net/1853/6991

► This thesis reports on a new implementation of high quality factor (Q) copper (Cu) inductors on CMOS-grade (10-20ohm.cm) silicon (Si) substrates using a fully CMOS-compatible… (more)

Subjects/Keywords: Trenched silicon island; Low-loss substrate; High-Q inductor; CMOS-compatible; Metal oxide semiconductors, Complementary; Electric inductors; Copper

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Raieszadeh, M. (2005). High-Q Integrated Inductors on Trenched Silicon Islands. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/6991

Chicago Manual of Style (16^th Edition):

Raieszadeh, Mina. “High-Q Integrated Inductors on Trenched Silicon Islands.” 2005. Masters Thesis, Georgia Tech. Accessed December 13, 2019. http://hdl.handle.net/1853/6991.

MLA Handbook (7^th Edition):

Raieszadeh, Mina. “High-Q Integrated Inductors on Trenched Silicon Islands.” 2005. Web. 13 Dec 2019.

Vancouver:

Raieszadeh M. High-Q Integrated Inductors on Trenched Silicon Islands. [Internet] [Masters thesis]. Georgia Tech; 2005. [cited 2019 Dec 13]. Available from: http://hdl.handle.net/1853/6991.

Council of Science Editors:

Raieszadeh M. High-Q Integrated Inductors on Trenched Silicon Islands. [Masters Thesis]. Georgia Tech; 2005. Available from: http://hdl.handle.net/1853/6991

University of Manchester

6. Saleem, Rashid. TOWARDS AN END-TO-END MULTIBAND OFDM SYSTEM ANALYSIS.

Degree: 2012, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:153756

► Ultra Wideband (UWB) communication has recently drawn considerable attention from academia and industry. This is mainly owing to the ultra high speeds and cognitive features… (more)

▼ Ultra Wideband (UWB) communication has recently drawn considerable attention from academia and industry. This is mainly owing to the ultra high speeds and cognitive features it could offer. The employability of UWB in numerous areas including but not limited to Wireless Personal Area Networks, WPAN’s, Body Area Networks, BAN’s, radar and medical imaging etc. has opened several avenues of research and development. However, still there is a disagreement on the standardization of UWB. Two contesting radios for UWB are Multiband Orthogonal Frequency Division Multiplexing (MB-OFDM) and DS-UWB (Direct Sequence Ultra Wideband). As nearly all of the reported research on UWB hasbeen about a very narrow/specific area of the communication system, this thesis looks at the end-to-end performance of an MB-OFDM approach. The overall aim of this project has been to first focus on three different aspects i.e. interference, antenna and propagation aspects of an MB-OFDM system individually and then present a holistic or an end-to-end system analysis finally. In the first phase of the project the author investigated the performance of MB-OFDM system under the effect of his proposed generic or technology non-specific interference. Avoiding the conventional Gaussian approximation, the author has employed an advanced stochastic method. A total of two approaches have been presented in this phase of the project. The first approach is an indirect one which involves the Moment Generating Functions (MGF’s) of the Signal-to-Interference-plus-Noise-Ratio (SINR) and the Probability Density Function (pdf) of the SINR to calculate the Average Probabilities of Error of an MB-OFDM system under the influence of proposed generic interference. This approach assumed a specific two-dimensional Poisson spatial/geometric placement of interferers around the victim MB-OFDM receiver. The second approach is a direct approach and extends the first approach by employing a wider class of generic interference. In the second phase of the work the author designed, simulated, prototyped and tested novel compact monopole planar antennas for UWB application. In this phase of the research, compact antennas for the UWB application are presented. These designs employ low-loss Rogers duroid substrates and are fed by Copla-nar Waveguides. The antennas have a proposed feed-line to the main radiating element transition region. This transition region is formed by a special step-generating function-set called the “Inverse Parabolic Step Sequence” or IPSS. These IPSS-based antennas are simulated, prototyped and then tested in the ane-choic chamber. An empirical approach, aimed to further miniaturize IPSS-based antennas, was also derived in this phase of the project. The empirical approach has been applied to derive the design of a further miniaturized antenna. More-over, an electrical miniaturization limit has been concluded for the IPSS-based antennas. The third phase of the project has investigated the effect of the indoor furnishing on the distribution of the elevation… Advisors/Committee Members: Brown, Tony.

Subjects/Keywords: Ultra Wideband; Multiband OFDM; Error Performance; Interference; Conditional Gaussian Random Variables; Generic Interference; Antenna; Miniature Antenna; Electrically Small Antenna; Empirical Miniaturization; Low loss substrate; Inverse Parabolic Step Sequence; Coplanar Waveguide; Indoor Propagation; Channel Modelling; Angle of Arrival; Probability Density Function; Vectorial Channel Modelling; Generalized Gaussian Distribution; System Impulse Response; End-to-End System Equation; System Analysis; Moment Generating Functions

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Saleem, R. (2012). TOWARDS AN END-TO-END MULTIBAND OFDM SYSTEM ANALYSIS. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:153756

Chicago Manual of Style (16^th Edition):

Saleem, Rashid. “TOWARDS AN END-TO-END MULTIBAND OFDM SYSTEM ANALYSIS.” 2012. Doctoral Dissertation, University of Manchester. Accessed December 13, 2019. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:153756.

MLA Handbook (7^th Edition):

Saleem, Rashid. “TOWARDS AN END-TO-END MULTIBAND OFDM SYSTEM ANALYSIS.” 2012. Web. 13 Dec 2019.

Vancouver:

Saleem R. TOWARDS AN END-TO-END MULTIBAND OFDM SYSTEM ANALYSIS. [Internet] [Doctoral dissertation]. University of Manchester; 2012. [cited 2019 Dec 13]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:153756.

Council of Science Editors:

Saleem R. TOWARDS AN END-TO-END MULTIBAND OFDM SYSTEM ANALYSIS. [Doctoral Dissertation]. University of Manchester; 2012. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:153756

University of Manchester

7. Saleem, Rashid. Towards an end-to-end multiband OFDM system analysis.

Degree: PhD, 2012, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/towards-an-endtoend-multiband-ofdm-system-analysis(e711f32f-1ac6-4b48-8f4e-58309c0482d3).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.727787

► Ultra Wideband (UWB) communication has recently drawn considerable attention from academia and industry. This is mainly owing to the ultra high speeds and cognitive features… (more)

▼ Ultra Wideband (UWB) communication has recently drawn considerable attention from academia and industry. This is mainly owing to the ultra high speeds and cognitive features it could offer. The employability of UWB in numerous areas including but not limited to Wireless Personal Area Networks, WPAN's, Body Area Networks, BAN's, radar and medical imaging etc. has opened several avenues of research and development. However, still there is a disagreement on the standardization of UWB. Two contesting radios for UWB are Multiband Orthogonal Frequency Division Multiplexing (MB-OFDM) and DS-UWB (Direct Sequence Ultra Wideband). As nearly all of the reported research on UWB hasbeen about a very narrow/specific area of the communication system, this thesis looks at the end-to-end performance of an MB-OFDM approach. The overall aim of this project has been to first focus on three different aspects i.e. interference, antenna and propagation aspects of an MB-OFDM system individually and then present a holistic or an end-to-end system analysis finally. In the first phase of the project the author investigated the performance of MB-OFDM system under the effect of his proposed generic or technology non-specific interference. Avoiding the conventional Gaussian approximation, the author has employed an advanced stochastic method. A total of two approaches have been presented in this phase of the project. The first approach is an indirect one which involves the Moment Generating Functions (MGF's) of the Signal-to-Interference-plus-Noise-Ratio (SINR) and the Probability Density Function (pdf) of the SINR to calculate the Average Probabilities of Error of an MB-OFDM system under the influence of proposed generic interference. This approach assumed a specific two-dimensional Poisson spatial/geometric placement of interferers around the victim MB-OFDM receiver. The second approach is a direct approach and extends the first approach by employing a wider class of generic interference. In the second phase of the work the author designed, simulated, prototyped and tested novel compact monopole planar antennas for UWB application. In this phase of the research, compact antennas for the UWB application are presented. These designs employ low-loss Rogers duroid substrates and are fed by Copla-nar Waveguides. The antennas have a proposed feed-line to the main radiating element transition region. This transition region is formed by a special step-generating function-set called the "Inverse Parabolic Step Sequence" or IPSS. These IPSS-based antennas are simulated, prototyped and then tested in the ane-choic chamber. An empirical approach, aimed to further miniaturize IPSS-based antennas, was also derived in this phase of the project. The empirical approach has been applied to derive the design of a further miniaturized antenna. More-over, an electrical miniaturization limit has been concluded for the IPSS-based antennas. The third phase of the project has investigated the effect of the indoor furnishing on the distribution of the elevation…

Subjects/Keywords: 621.382; Probability Density Function; Channel Modelling; Angle of Arrival; Vectorial Channel Modelling; Moment Generating Functions; System Impulse Response; End-to-End System Equation; System Analysis; Indoor Propagation; Generalized Gaussian Distribution; Coplanar Waveguide; Inverse Parabolic Step Sequence; Low loss substrate; Ultra Wideband; Error Performance; Interference; Conditional Gaussian Random Variables; Multiband OFDM; Antenna; Miniature Antenna; Electrically Small Antenna; Generic Interference; Empirical Miniaturization

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Saleem, R. (2012). Towards an end-to-end multiband OFDM system analysis. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/towards-an-endtoend-multiband-ofdm-system-analysis(e711f32f-1ac6-4b48-8f4e-58309c0482d3).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.727787

Chicago Manual of Style (16^th Edition):

Saleem, Rashid. “Towards an end-to-end multiband OFDM system analysis.” 2012. Doctoral Dissertation, University of Manchester. Accessed December 13, 2019. https://www.research.manchester.ac.uk/portal/en/theses/towards-an-endtoend-multiband-ofdm-system-analysis(e711f32f-1ac6-4b48-8f4e-58309c0482d3).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.727787.

MLA Handbook (7^th Edition):

Saleem, Rashid. “Towards an end-to-end multiband OFDM system analysis.” 2012. Web. 13 Dec 2019.

Vancouver:

Saleem R. Towards an end-to-end multiband OFDM system analysis. [Internet] [Doctoral dissertation]. University of Manchester; 2012. [cited 2019 Dec 13]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/towards-an-endtoend-multiband-ofdm-system-analysis(e711f32f-1ac6-4b48-8f4e-58309c0482d3).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.727787.

Council of Science Editors:

Saleem R. Towards an end-to-end multiband OFDM system analysis. [Doctoral Dissertation]. University of Manchester; 2012. Available from: https://www.research.manchester.ac.uk/portal/en/theses/towards-an-endtoend-multiband-ofdm-system-analysis(e711f32f-1ac6-4b48-8f4e-58309c0482d3).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.727787

Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ)

8. Kakalis, Athanasios. Identification of anelastic and viscoelastic dissipation mechanisms in at-cut guartz resonators and thin polymer films with high frequency impedance spectroscopy and the differential evolution metaheuristic.

Degree: 2015, Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ)

URL: http://hdl.handle.net/10442/hedi/43071

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This dissertation details the impact of anelastic and viscoelastic effects on the frequency and the electrical response of quartz TSM sensors, unperturbed or perturbed with… (more)

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This dissertation details the impact of anelastic and viscoelastic effects on the frequency and the electrical response of quartz TSM sensors, unperturbed or perturbed with thin polymer films made from poly(L-lactic acid) (PLLA), a semicrystalline, biodegradable aliphatic polyester. The frequency/electrical behavior of a series of unperturbed QCM sensors in a nitrogen gas phase at atmospheric pressure, was studied with high frequency impedance analysis, during repeated temperature ramps between 20 °C and 150 °C. The quartz effective properties were calculated through data fitting of the experimentally acquired frequency/admittance spectra with the transmission line model. Data analysis was undertaken with the classic version of the Differential Evolution (DE) algorithm, equipped with a module for computing the joint confidence regions for each optimization parameter. The results were explained on the grounds of different external and internal energy dissipation mechanisms which affect the frequency and the electrical response. The electrical and frequency response of a QCM sensor coated with thin films of poly(L-lactic acid) was studied with high frequency impedance analysis and temperature cycling between 25 and 115 °C. Two film samples were prepared with solution casting, whereas a third sample was realized via spin coating. The two solution cast films were thermally annealed well below the polymer’s glass transition temperature Tg (52.5 °C) for 24 hr under vacuum, whereas the spin coated film was thermally annealed at (Tg+20) oC for 24 hr under vacuum. The results were correlated with theoretical studies relating the stiffness of the film/substrate interface to a shift in the sensor’s frequency and electrical response. It was concluded that the film/substrate interface stiffness of the solvent cast films was compromised due to the existence of solvent (chloroform) therein, solvent which was used during the coating process. The spin coated film was subjected to three subsequent temperature ramps. The observed frequency and electrical response were attributed to the enhancement of the film/substrate interface stiffness, due to the non-isothermal crystallization of the PLLA during the repeated temperature ramps.

Η διατριβή σχετίζεται με την μελέτη ανελαστικών και ιξωδοελαστικών φαινομένων σε αισθητήρες QCM οι οποίοι είτε δεν φέρουν επικάλυψη κάποιου συνεχούς μέσου, είτε είναι επικαλυμμένοι με λεπτά υμένια από το ημι-κρυσταλλικό πολυμερές πολυ(L-γαλακτικό οξύ) (PLLA). Μελετήθηκε η ηλεκτρική απόκριση (συχνότητα/σύνθετη αγωγιμότητα) μιας σειράς από ακουστικούς αισθητήρες QCM χαλαζία, κατά τη διάρκεια επαναλαμβανόμενων θερμάνσεων (ατμόσφαιρα αζώτου, ατμοσφαιρική πίεση), για το εύρος θερμοκρασιών 20 οC έως 150 °C. Η ηλεκτρική απόκριση μετρήθηκε με την μέθοδο της φασματοσκοπίας σύνθετης αντίστασης υψηλών συχνοτήτων και υπολογίστηκαν οι «ενεργές» ιδιότητες κάθε αισθητήρα QCM. Οι υπολογισμοί πραγματοποιήθηκαν με τη βοήθεια του μοντέλου «γραμμής μετάδοσης» (transmission line model). Η προσαρμογή και ο υπολογισμός των…

Subjects/Keywords: Μικροζυγός κρυστάλλου χαλαζία;

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APA (6^th Edition):

Kakalis, A. (2015). Identification of anelastic and viscoelastic dissipation mechanisms in at-cut guartz resonators and thin polymer films with high frequency impedance spectroscopy and the differential evolution metaheuristic. (Thesis). Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ). Retrieved from http://hdl.handle.net/10442/hedi/43071

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kakalis, Athanasios. “Identification of anelastic and viscoelastic dissipation mechanisms in at-cut guartz resonators and thin polymer films with high frequency impedance spectroscopy and the differential evolution metaheuristic.” 2015. Thesis, Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ). Accessed December 13, 2019. http://hdl.handle.net/10442/hedi/43071.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kakalis, Athanasios. “Identification of anelastic and viscoelastic dissipation mechanisms in at-cut guartz resonators and thin polymer films with high frequency impedance spectroscopy and the differential evolution metaheuristic.” 2015. Web. 13 Dec 2019.

Vancouver:

Kakalis A. Identification of anelastic and viscoelastic dissipation mechanisms in at-cut guartz resonators and thin polymer films with high frequency impedance spectroscopy and the differential evolution metaheuristic. [Internet] [Thesis]. Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ); 2015. [cited 2019 Dec 13]. Available from: http://hdl.handle.net/10442/hedi/43071.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kakalis A. Identification of anelastic and viscoelastic dissipation mechanisms in at-cut guartz resonators and thin polymer films with high frequency impedance spectroscopy and the differential evolution metaheuristic. [Thesis]. Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ); 2015. Available from: http://hdl.handle.net/10442/hedi/43071

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Queensland University of Technology

9. Byrne, Nuala Mary. Adaptation to weight-loss in the obese.

Degree: 2000, Queensland University of Technology

URL: http://eprints.qut.edu.au/36756/

Subjects/Keywords: Weight loss; Body composition; Impedance (Bioelectric); aerobic capacity; bioelectrical impedance; blood lipids; diet; energy metabolism/physiology; exercise; exercise prescription; heart rate; metabolic adaptation/aberration; obesity; rating of perceived exertion; resistance; respiratory quotient; resting metabolic rate; substrate oxidation; thyroid; total body water; weight-loss; thesis; doctoral

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Byrne, N. M. (2000). Adaptation to weight-loss in the obese. (Thesis). Queensland University of Technology. Retrieved from http://eprints.qut.edu.au/36756/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Byrne, Nuala Mary. “Adaptation to weight-loss in the obese.” 2000. Thesis, Queensland University of Technology. Accessed December 13, 2019. http://eprints.qut.edu.au/36756/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Byrne, Nuala Mary. “Adaptation to weight-loss in the obese.” 2000. Web. 13 Dec 2019.

Vancouver:

Byrne NM. Adaptation to weight-loss in the obese. [Internet] [Thesis]. Queensland University of Technology; 2000. [cited 2019 Dec 13]. Available from: http://eprints.qut.edu.au/36756/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Byrne NM. Adaptation to weight-loss in the obese. [Thesis]. Queensland University of Technology; 2000. Available from: http://eprints.qut.edu.au/36756/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Urbana-Champaign

10. Lee, Shih-hao. Efficient Finite Element Electromagnetic Analysis for High-Frequency/High-Speed Circuits And Multiconductor Transmission Lines.

Degree: PhD, Electrical and Computer Engineering, 2009, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/11987

► This dissertation comprises the following four components. (1) Development of a robust and efficient 3-D finite element electromagnetic field solver with high-order vector elements for… (more)

Subjects/Keywords: electromagnetics; microwave; finite element method (FEM); nodal elements; vector elements; edge elements; higher-order elements; triangular elements; tetrahedral elements; finite element analysis; full-wave analysis; impedance boundary condition; port boundary condition; wave port; lumped port; deembedding; thin-wire approximation; thin wire modeling; internal impedance; lumped elements; lumped circuits; field-circuit simulation; EM-circuit simulation; stamping; reduced-order modeling; model order reduction (MOR); fast frequency sweep; solution space projection (SSP); quasi-static analysis; quasi-TEM analysis; generalized eigenproblem; Lanczos algorithm; modal analysis; eigenanalysis; frequency-dependent media; anisotropic media; Debye model; multiconductor transmission lines; transmission line parameters; frequency-dependent losses; conductor loss; dielectric loss; substrate loss; characteristic impedance; skin effect; proximity effect; parameter extraction; resistance; inductance; capacitance; conductance; per-unit-length; composite conductors; waveguide; filter; coplanar waveguide (CPW); striplines; microstrip lines; high-frequency circuits; RF circuits; high-speed circuits; tree-cotree splitting; low-frequency breakdown; low-frequency instability; preconditioning; bonding wire; printed circuit board; multilayer printed circuit board (PCB); via-holes; signal integrity; electromagnetic coupling; interconnects; domain decomposition; Approximate Modal Interface (AMI); Approximate Modal Interface–Solution Space Projection (AMI–SSP); domain decomposition–model order reduction (DD–MOR); computer-aided design (CAD)

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lee, S. (2009). Efficient Finite Element Electromagnetic Analysis for High-Frequency/High-Speed Circuits And Multiconductor Transmission Lines. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/11987

Chicago Manual of Style (16^th Edition):

Lee, Shih-hao. “Efficient Finite Element Electromagnetic Analysis for High-Frequency/High-Speed Circuits And Multiconductor Transmission Lines.” 2009. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed December 13, 2019. http://hdl.handle.net/2142/11987.

MLA Handbook (7^th Edition):

Lee, Shih-hao. “Efficient Finite Element Electromagnetic Analysis for High-Frequency/High-Speed Circuits And Multiconductor Transmission Lines.” 2009. Web. 13 Dec 2019.

Vancouver:

Lee S. Efficient Finite Element Electromagnetic Analysis for High-Frequency/High-Speed Circuits And Multiconductor Transmission Lines. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2009. [cited 2019 Dec 13]. Available from: http://hdl.handle.net/2142/11987.

Council of Science Editors:

Lee S. Efficient Finite Element Electromagnetic Analysis for High-Frequency/High-Speed Circuits And Multiconductor Transmission Lines. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2009. Available from: http://hdl.handle.net/2142/11987

11. Satter, Md. Mahbub. Design and theoretical study of Wurtzite III-N deep ultraviolet edge emitting laser diodes.

Degree: PhD, Electrical and Computer Engineering, 2014, Georgia Tech

URL: http://hdl.handle.net/1853/53042

► Designs for deep ultraviolet (DUV) edge emitting laser diodes (LDs) based on the wurtzite III-nitride (III-N) material system are presented. A combination of proprietary and… (more)

▼ Designs for deep ultraviolet (DUV) edge emitting laser diodes (LDs) based on the wurtzite III-nitride (III-N) material system are presented. A combination of proprietary and commercial advanced semiconductor LD simulation software is used to study the operation of III-N based DUV LDs theoretically. Critical factors limiting device performance are identified based on an extensive literature survey. A comprehensive design parameter space is investigated thoroughly with the help of advanced scripting capabilities. Several design strategies are proposed to eliminate the critical problems completely or partially. A DUV LD design is proposed based exclusively on AlInN active layers grown epitaxially on bulk AlN substrates because AlInN offers a promising alternative to AlGaN for the realization of LDs and LEDs operating in the DUV regime. The proposed AlInN-based design also features a tapered electron blocking layer (EBL) instead of a homogeneous one. Tapered EBLs redistribute the interfacial polarization charge volumetrically throughout the entire EBL thickness via compositional grading, and eliminate the parasitic inversion layer charge. AlGaN based DUV LD designs are explored also because at present, it may be difficult to grow AlInN epitaxially with superior crystalline quality. Polarization charge matching is proposed to improve electron and hole wavefunction overlap within the active region. Although the strategy of polarization charge matching has already been proposed in the literature to enhance performance of visible wavelength LEDs and LDs, the proposed design presents the first demonstration that polarization charge matching is also feasible for DUV LDs operating at sub-300 nm wavelengths. A lateral current injection (LCI) LD design is proposed featuring polarization-charge-matched barriers and regrown Ohmic contacts to avoid a group of issues related to the highly inefficient p-type doping of wide bandgap III-N materials in vertical injection designs. The proposed design partially decouples the problem of electrical injection from that of optical confinement. Although the idea of an LCI LD design has been proposed in the literature in the 90s to be used as longer wavelength active sources in optoelectronic integrated circuits using GaInAsP/InP and related material systems, the proposed design is the first theoretical demonstration that this concept can be applied to DUV LDs based on III-N material system. To solve the problem of hole transport in vertical injection designs, a DUV LD design based exclusively on AlGaN material system is presented, featuring an inverse-tapered p-waveguide layer instead of an EBL. Several EBL designs are investigated, and compared with conventionally-tapered EBL design. Through judicious volumetric redistribution of fixed negative polarization charge, inverse tapering may be exploited to achieve nearly flat valence band profiles free from barriers to hole injection into the active region, in contrast to conventional designs. Numerical simulations demonstrate that the… Advisors/Committee Members: Yoder, Douglas (advisor), Dupuis, Russell D. (committee member), Shen, Shyh-Chiang (committee member), Buck, John (committee member), Vogel, Eric (committee member).

Subjects/Keywords: AlInN active layer; AlGaN active layer; AlGaN epitaxial layer; AlN substrate; Quantum-confined Stark effect; Tapered electron blocking layer; Lateral current injection; Quaternary barrier; Regrown Ohmic contacts; Deep ultraviolet laser diodes; Efficient hole transport; Hole blocking layer; Inverse tapering; Optical absorption loss; Polarization charge

…pseudomorphic AlInN layer on an AlN substrate. On the other hand, tensile strain favors the TM mode… …structure of Table 6.1. ��.... 62 Figure 6.5: Effect of additional optical loss on threshold… …current and slope efficiency. Sub-bandgap absorption loss may degrade slope efficiency… …on threshold current, optical absorption loss in metal and optical confinement factor. 75… …pseudomorphically grown on top of AlN substrate. �� ….... 81 xiii Figure 7.10: Energy band…

10 more images…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Satter, M. M. (2014). Design and theoretical study of Wurtzite III-N deep ultraviolet edge emitting laser diodes. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/53042

Chicago Manual of Style (16^th Edition):

Satter, Md Mahbub. “Design and theoretical study of Wurtzite III-N deep ultraviolet edge emitting laser diodes.” 2014. Doctoral Dissertation, Georgia Tech. Accessed December 13, 2019. http://hdl.handle.net/1853/53042.

MLA Handbook (7^th Edition):

Satter, Md Mahbub. “Design and theoretical study of Wurtzite III-N deep ultraviolet edge emitting laser diodes.” 2014. Web. 13 Dec 2019.

Vancouver:

Satter MM. Design and theoretical study of Wurtzite III-N deep ultraviolet edge emitting laser diodes. [Internet] [Doctoral dissertation]. Georgia Tech; 2014. [cited 2019 Dec 13]. Available from: http://hdl.handle.net/1853/53042.

Council of Science Editors:

Satter MM. Design and theoretical study of Wurtzite III-N deep ultraviolet edge emitting laser diodes. [Doctoral Dissertation]. Georgia Tech; 2014. Available from: http://hdl.handle.net/1853/53042

Open Access Theses and Dissertations