Harmonic Distortion Suppression Technique for Varactor-Loaded Parasitic Radiator Antennas

• HAN Qing

  ATR Adaptive Communications Research Laboratories

• INAGAKI Keizo

  ATR Adaptive Communications Research Laboratories

• IIGUSA Kyouichi

  ATR Adaptive Communications Research Laboratories

• SCHLUB Robert

  Griffith University

• OHIRA Takashi

  ATR Adaptive Communications Research Laboratories

• AKAIKE Masami

  Tokyo University of Science

抄録

Harmonic distortions of a recently developed light-weight film-type ESPAR (Electronically Steerable Passive Array Radiator) antenna are investigated experimentally. These distortions arise from the nonlinearity of the varactor diodes that are directly integrated with the parasitic radiator elements to control the antenna's radiation pattern. A reactive-near-field measurement technique that employs low-interference probes in an ultra-small anechoic box is used to reduce experimental time and cost. An anti-series varactor pair is introduced and compared with the conventional single varactor. Consequently, an ESPAR antenna equipped with the anti-series varactor pair exhibits remarkable suppression of nonlinear distortion. In particular, the second- and the third-order harmonic is reduced by approximately 20 dB and 12 dB from the level of a single varactor type ESPAR antenna, respectively.

収録刊行物

• IEICE transactions on electronics

  IEICE transactions on electronics 85 (12), 2015-2021, 2002-12-01

  一般社団法人電子情報通信学会

キーワード

• ESPAR antenna
• varactor diode
• nonlinear
• harmonic distortion
• reactive near-field measurement

詳細情報

• CRID: 1572261552372301184
• NII論文ID: 110003214445
• NII書誌ID: AA10826283
• ISSN: 09168524
• 本文言語コード: en
• データソース種別:
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