Acta Metallurgica Sinica(English letters) ›› 2009, Vol. 16 ›› Issue (2): 94-97.doi: 10.1016/S1005-8885(08)60210-1

• Electromagnetic Field and Microwave Technologies • 上一篇    下一篇

Refinement of circular-polarization based on multilayer film structure

李彬,李桂仁,周锡增,HUANG Shan-guo, 顾畹仪   

  1. Key Laboratory of Optical Communications and Lightwave Technologies, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-04-30
  • 通讯作者: 李彬

Refinement of circular-polarization based on multilayer film structure

LI Bin, LEE Kuei-jen, CHOU Hsi-tseng, HUANG Shan-guo, GU Wan-yi   

  1. Key Laboratory of Optical Communications and Lightwave Technologies, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-04-30
  • Contact: LI Bin

摘要:

Circular-polarization discrimination appears in many antennas’ applications. A compensation approach based on multilayer film structure is proposed to improve the axial ratio of the magnitude of the two perpendicular modes of the lump ports. The goal is to widen the beamwidth of radiation that has an axial ratio less than 3 dB and thus reducing the complexity at the receiver. A transfer matrix method was developed to represent the multilayer film and characterize its performance. Simulation using high frequency structure simulator shows that a crossed dipole, as an example, can achieve a beamwidth of more than at the frequency of 12.45 GHz after compensation. Finally, conclusions and future work about this compensation method are presented.

关键词:

crossed;dipole,;multilayer,;compensation,;beamwidth

Abstract:

Circular-polarization discrimination appears in many antennas’ applications. A compensation approach based on multilayer film structure is proposed to improve the axial ratio of the magnitude of the two perpendicular modes of the lump ports. The goal is to widen the beamwidth of radiation that has an axial ratio less than 3 dB and thus reducing the complexity at the receiver. A transfer matrix method was developed to represent the multilayer film and characterize its performance. Simulation using high frequency structure simulator shows that a crossed dipole, as an example, can achieve a beamwidth of more than at the frequency of 12.45 GHz after compensation. Finally, conclusions and future work about this compensation method are presented.

Key words:

crossed dipole;multilayer;compensation;beamwidth