Dual Frequency and Dual Circular Polarization Antenna with High Isolation for Satellite Communication

LI Jian-feng; SUN Bao-hua; ZHANG Jun; LIU Qi-zhong

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Dual Frequency and Dual Circular Polarization Antenna with High Isolation for Satellite Communication

更新时间：2025-07-16

- Dual Frequency and Dual Circular Polarization Antenna with High Isolation for Satellite Communication
- Acta Electronica Sinica Vol. 37, Issue 12, Pages: 2829-2832(2009)
- 作者机构：
  
  1. 西安电子科技大学天线与微波技术国家重点实验室,陕西,西安,710071
  2. 中国科学院上海微系统与信息技术研究所小卫星工程部,上海,200050
  3. 西安电子科技大学天线与微波技术国家重点实验室陕西西安,710071
  4. 中国科学院上海微系统与信息技术研究所小卫星工程部上海,200050
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN820
- Published：2009
- 稿件说明：
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LI Jian-feng, SUN Bao-hua, ZHANG Jun, et al. Dual Frequency and Dual Circular Polarization Antenna with High Isolation for Satellite Communication[J]. Acta Electronica Sinica, 2009, 37(12): 2829-2832.
DOI：

LI Jian-feng, SUN Bao-hua, ZHANG Jun, et al. Dual Frequency and Dual Circular Polarization Antenna with High Isolation for Satellite Communication[J]. Acta Electronica Sinica, 2009, 37(12): 2829-2832. DOI：

摘要

提出了一种新型的用于卫星通信的双频双圆极化多层微带贴片天线.该天线采用兰格耦合器正交馈电

分别在420±1.5MHz和450MHz±1.5MH的收发频率实现右旋和左旋圆极化辐射

且满足单一天线收发双工的通信要求;采用耦合贴片馈电方式和附加集总电路滤波网络

有效地改善了两端口之间的收发隔离度.此外

该天线采用高介电常数的介质基板减小了天线尺寸.兰格耦合器采用曲折线技术减小了馈电网络的结构尺寸(约74.6%).仿真和实测结果吻合良好

在工作频带内收发隔离度大于40dB

VSWR

小于2.0

增益大于3dBc

0dB增益宽度及3dB轴比宽度均达到80°.

Abstract

A novel dual frequency and dual circular polarization multilayer microstrip antenna for satellite communication is presented.The proposed antenna can realize right circularly polarized radiation and left circularly polarized radiation simultaneously at 420±1.5MHz and 450MHz±1.5MH by using the Lange-coupler as an orthogonal feeding network.And

the duplex communication is achieved for the single antenna.The patch coupled feeding and additional lumped filtering network improve isolation effectively.In addition

the antenna is constructed with high permittivity dielectric substrate

which can help to reduce the antenna size.The Lange-coupler size is miniaturized (about 74.6%) with the meander-line structure.A good agreement is achieved between the simulation and the experiment results.In the operating frequency band

the isolation is more than 40dB

VSWR is less than 2.0 and the radiation gain of the proposed antenna is larger than 3dBc.The measured results show that both of the 3 dB axial ratio and the 0 dB gain width reach up to 80 degrees.

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