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Nonlinear Design Technique for High-Power Switching-Mode Oscillators

Jeon, Sanggeun and Suárez, Almudena and Rutledge, David B. (2006) Nonlinear Design Technique for High-Power Switching-Mode Oscillators. IEEE Transactions on Microwave Theory and Techniques, 54 (10). pp. 3630-3640. ISSN 0018-9480. doi:10.1109/TMTT.2006.882406.

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A simple nonlinear technique for the design of high-efficiency and high-power switching-mode oscillators is presented. It combines existing quasi-nonlinear methods and the use of an auxiliary generator (AG) in harmonic balance. The AG enables the oscillator optimization to achieve high output power and dc-to-RF conversion efficiency without affecting the oscillation frequency. It also imposes a sufficient drive on the transistor to enable the switching-mode operation with high efficiency. Using this AG, constant-power and constant-efficiency contour plots are traced in order to determine the optimum element values. The oscillation startup condition and the steady-state stability are analyzed with the pole-zero identification technique. The influence of the gate bias on the output power, efficiency, and stability is also investigated. A class-E oscillator is demonstrated using the proposed technique. The oscillator exhibits 75 W with 67% efficiency at 410 MHz.

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Additional Information:© Copyright 2006 IEEE. Reprinted with permission. Manuscript received November 3, 2005; revised March 16, 2006. [Posted online: 2006-10-02] This work was supported by the Lee Center for Advanced Networking, California Institute of Technology. The authors would like to thank J.-M. Collantes, University of the Basque Country, Bilbao, Spain, for helpful comments.
Subject Keywords:Class-E tuning, high-efficiency oscillator, nonlinear optimization, oscillation stability, startup criterion
Issue or Number:10
Record Number:CaltechAUTHORS:JEOieeetmtt06b
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5519
Deposited By: Archive Administrator
Deposited On:20 Oct 2006
Last Modified:08 Nov 2021 20:26

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