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Design and Analysis of High-Efficiency L-Band Power Amplifiers


Wang, Feiyu (2006) Design and Analysis of High-Efficiency L-Band Power Amplifiers. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/CJGR-TF04.


Discrete solid-state high-power amplifiers are among the important circuit components in today’s wireless communications and remote-sensing applications. As the device technologies continue to improve, there are new opportunities and new challenges presented to power amplifier designers. This thesis presents novel techniques in the design and the analysis of L-band high-efficiency power amplifiers, which may be used in many communications and radar applications.

In this work, high-efficiency power amplifier topologies are discussed and implemented. The goal is to push the boundary of output power, operating frequency, efficiency and bandwidth. Also, the design of a key passive component, a balanced-to-unbalanced transformer (balun) is discussed in detail. Some new designs of the baluns are shown, and the results show advantages of these baluns over some of the traditional work at L-band.

The stability analysis of power amplifiers is one of the most critical and the most challenging aspects of power amplifier design. This work shows an analysis technique, which accurately predicts the oscillations in power amplifiers. Using the technique, different stabilization techniques and circuits are designed and implemented.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:balun; bifurcation analysis; high efficiency; L-band; power amplifiers; stability analysis
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Electrical Engineering
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Rutledge, David B.
Thesis Committee:
  • Rutledge, David B. (chair)
  • Moussessian, Alina
  • Vahala, Kerry J.
  • Weinreb, Sander
  • Bridges, William B.
Defense Date:19 December 2005
Record Number:CaltechETD:etd-02182006-133932
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:673
Deposited By: Imported from ETD-db
Deposited On:27 Feb 2006
Last Modified:06 May 2020 22:07

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