Journal of electromagnetic engineering and science

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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A Study on the Improvement of the Performance of Power Amplifiers by Deflected Ground Structure

  • Lim, Jong-Sik (School of Electrical Engineering, Seoul National University) ;
  • Lee, Young-Taek (School of Electrical Engineering, Seoul National University) ;
  • Han, Jae-Hee (School of Electrical Engineering, Seoul National University) ;
  • Nam, Sang-wook (School of Electrical Engineering, Seoul National University) ;
  • Park, Jun-Seok (Division of Information Technology Engineering, SoonChunHyang University) ;
  • Ahn, Dal (Division of Information Technology Engineering, SoonChunHyang University) ;
  • Kim, Byung-Sung (School of Electrical and Computer Engineering, SungKyunKwan University)
  • Published : 2001.11.01
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Abstract

This paper describes the improvement in performance of power amplifiers by Defected Ground Structure (DGS) for several operating classes. Due to its excellent capability of harmonic rejection, DGS plays a threat role in improving the main performance of power amplifiers such as output power, power added efficiency, harmonic rejection, and intermodulation distortion (IMD3). In order to verify the improvement in performance of power amplifiers by DGS, measured data for a 30 Watts power amplifier with and without DGS attached under several operating classes are illustrated and compared. The principle of the performance improvement is described with simple Volterra nonlinear transfer functions. Also, the measured performance far two cases, i.e. with and without DGS, and the quantities of improvement fur the various operating classes are compared and discussed.

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References

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