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You searched for subject:(Coupled Oscillator Array). Showing records 1 – 3 of 3 total matches.

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NSYSU

1. Chuang, Cho-Ying. Study of Active Phased Arrays Using Mutual Injection Locking Technique.

Degree: Master, Electrical Engineering, 2016, NSYSU

This thesis aims to design an active phased array which is adapted to transmitting terminal. Firstly, Power combining and beam-scanning function can be achieved by synchronizing all of injection-locked oscillators (ILOs) using coupling network. This thesis also conducted a comparison between two different architecture of injection-locked oscillator design which are Class-E ILO and Colpitts ILO. Secondly, in order to accomplish the active phased array using mutual injection locking mechanism, coupling network and 1x4 patch array were designed and combined with ILOs. Finally, the far field patterns were measured in the chamber and two applications were demonstrated: vital sign detection and communication system applications. Advisors/Committee Members: Chao-Hsiung Tseng (chair), Jian-Ming Wu (chair), Sheng-Fuh Chang (chair), Tzyy-Sheng Horng (committee member).

Subjects/Keywords: Beam-scanning; Vital Sign Detection; Beam-forming; Mutual Injection Locking; Coupled Oscillator Array; Massive MIMO; Injection-Locked Oscillator; Active Phased Array

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

APA (6th Edition):

Chuang, C. (2016). Study of Active Phased Arrays Using Mutual Injection Locking Technique. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807116-143400

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

Chicago Manual of Style (16th Edition):

Chuang, Cho-Ying. “Study of Active Phased Arrays Using Mutual Injection Locking Technique.” 2016. Thesis, NSYSU. Accessed December 15, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807116-143400.

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

MLA Handbook (7th Edition):

Chuang, Cho-Ying. “Study of Active Phased Arrays Using Mutual Injection Locking Technique.” 2016. Web. 15 Dec 2019.

Vancouver:

Chuang C. Study of Active Phased Arrays Using Mutual Injection Locking Technique. [Internet] [Thesis]. NSYSU; 2016. [cited 2019 Dec 15]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807116-143400.

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

Council of Science Editors:

Chuang C. Study of Active Phased Arrays Using Mutual Injection Locking Technique. [Thesis]. NSYSU; 2016. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807116-143400

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


The Ohio State University

2. Liu, Chuan-Chang. Design, Analysis and Implementation of Fully-Integrated Millimeter-Wave Coupled-Oscillator Antenna Array.

Degree: PhD, Electrical and Computer Engineering, 2016, The Ohio State University

Over the past few years, the rapid advances in silicon technology have made multi-Gbps wireless digital communication become attractive due to the low-cost and high integration levels. The 57 to 66 GHz ISM band with 9-GHz available bandwidth is believed to be a great candidate for high-speed short-range wireless communications. 60-GHz wireless link systems in silicon integrated circuits have recently attracted widespread research interest and commercial development.This research focuses on developing a fully-integrated 60-GHz coupled oscillator antenna array system using IBM 0.13-┬Ám SiGe BiCMOS technology for short-range wireless communications. This work is different from previous related works because all the 60 GHz components, including the antenna, are fully integrated. The smaller size, lower cost, lower power, and higher compatibility make VLSI implementation more attractive in high-speed communication systems. The content includes three main topics, which are on-chip electrically small antenna design, self-oscillating active-integrated antenna (AIA) design, and coupled-oscillator antenna array (COAA) design. A novel on-chip antenna design technique is presented to isolate the antenna from the lossy silicon substrate thus increasing the antenna gain and radiation efficiency at mm-wave frequencies. The active-integrated antenna, which includes an on-chip dipole antenna, a voltage controlled oscillator (VCO), and injection-locking networks, is designed as a basic element of the coupled-oscillator array system. Finally, a two-element COAA with non-reciprocal coupling is presented for beam scanning applications. The COAA consists of two AIAs and a non-reciprocal coupling network (NRCN). The NRCN provides adjustable coupling gain and coupling phase between adjacent AIAs. This new topology overcomes several of the problems with this class of beam scanning arrays discussed in the literature. Advisors/Committee Members: Rojas, Roberto (Advisor).

Subjects/Keywords: Electrical Engineering; Electromagnetics; on-chip antenna; partially reflective surface; active integrated antenna; coupled oscillator antenna array

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

APA (6th Edition):

Liu, C. (2016). Design, Analysis and Implementation of Fully-Integrated Millimeter-Wave Coupled-Oscillator Antenna Array. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1452240824

Chicago Manual of Style (16th Edition):

Liu, Chuan-Chang. “Design, Analysis and Implementation of Fully-Integrated Millimeter-Wave Coupled-Oscillator Antenna Array.” 2016. Doctoral Dissertation, The Ohio State University. Accessed December 15, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1452240824.

MLA Handbook (7th Edition):

Liu, Chuan-Chang. “Design, Analysis and Implementation of Fully-Integrated Millimeter-Wave Coupled-Oscillator Antenna Array.” 2016. Web. 15 Dec 2019.

Vancouver:

Liu C. Design, Analysis and Implementation of Fully-Integrated Millimeter-Wave Coupled-Oscillator Antenna Array. [Internet] [Doctoral dissertation]. The Ohio State University; 2016. [cited 2019 Dec 15]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1452240824.

Council of Science Editors:

Liu C. Design, Analysis and Implementation of Fully-Integrated Millimeter-Wave Coupled-Oscillator Antenna Array. [Doctoral Dissertation]. The Ohio State University; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1452240824


University of Dayton

3. Jiang, Hai. The Effect of Amplitude Control and Randomness on Strongly Coupled Oscillator Arrays.

Degree: PhD, Electrical Engineering, 2009, University of Dayton

Phased arrays have many applications such as Radar Communication, Satellite Communication, and Wireless Local Area Networks (WLAN). For the traditional phased array, a phase shifter is used with each antenna element to establish a constant phase progression along the antenna array. A constant phase progression will force the electromagnetic wave to add up so that the energy would radiate at a particular angle with respect to the array. However, it is difficult to integrate the bulky phase-shifters in the monolithic module, especially when the application involves a large number of elements. This dissertation studies an alternative phase beam-scanning technique using arrays of coupled oscillators (COA), which avoids the use of phase shifters. This technique of COA may reduce the complexity of phase control circuits and provide for a phased array of lower volume and weight. Consequently, it simplifies the architecture of the T/R module and reduces the overall cost. In this work, dynamic equations of the nonlinear COA with arbitrary coupling networks are derived using both time and frequency domain methods. From the dynamic analysis, it is shown that the phase distribution along the array, and hence the beam scanning angle of the array, can be controlled by free running frequencies of the coupled oscillators. The stability and nonlinear behaviors of synchronized coupled oscillators are studied via the nonlinear control theory and applied to radar beam scanning arrays. Analysis indicates that a stable, unique equilibrium point exists when choosing a specific set of free running frequencies, and it is associated with the desired phase shift but within a given range. By means of previous dynamic analysis, effects of amplitude dynamics are studied for COAs with uniform, triangular and Chebyshev amplitude distributions. The array with different coupling strengths, nonlinear parameters, and synchronization frequencies are considered. Results demonstrate that beam shapes and SLLs can be controlled for the coupled oscillator array using strong coupling. The influence of the random, free-running frequency distribution of the phase error in COAs, which causes the phase shift error and hence the error of main beam scanning angle (EMBSA), is also investigated through a Monte Carlo analysis. It is found that strongly COAs are more robust than weakly COAs under the same level of randomness in free running frequencies. Furthermore, when random deviations become larger, the robustness of strongly COA is especially obvious. Advisors/Committee Members: Penno, Robert (Advisor).

Subjects/Keywords: Electrical Engineering; Coupled Oscillator Array; Phased Array; Amplitude Control; Dynamic Analysis; Stability Analysis; Transient Analysis; Robust Analysis; Effects of Amplitude Dynamics; Error of Main Beam Steering Angle; Strong Coupling; Monte Carlo Simulation.

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

APA (6th Edition):

Jiang, H. (2009). The Effect of Amplitude Control and Randomness on Strongly Coupled Oscillator Arrays. (Doctoral Dissertation). University of Dayton. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=dayton1257997831

Chicago Manual of Style (16th Edition):

Jiang, Hai. “The Effect of Amplitude Control and Randomness on Strongly Coupled Oscillator Arrays.” 2009. Doctoral Dissertation, University of Dayton. Accessed December 15, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1257997831.

MLA Handbook (7th Edition):

Jiang, Hai. “The Effect of Amplitude Control and Randomness on Strongly Coupled Oscillator Arrays.” 2009. Web. 15 Dec 2019.

Vancouver:

Jiang H. The Effect of Amplitude Control and Randomness on Strongly Coupled Oscillator Arrays. [Internet] [Doctoral dissertation]. University of Dayton; 2009. [cited 2019 Dec 15]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1257997831.

Council of Science Editors:

Jiang H. The Effect of Amplitude Control and Randomness on Strongly Coupled Oscillator Arrays. [Doctoral Dissertation]. University of Dayton; 2009. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1257997831

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