Broadband Quadrifilar Helix Antenna with Compact Feeding Network

CHU Qing-xin; LIN Wei; LIN Wei-xin; DU Shu

doi:10.3969/j.issn.0372-2112.2013.04.016

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Broadband Quadrifilar Helix Antenna with Compact Feeding Network

更新时间：2025-07-16

- Broadband Quadrifilar Helix Antenna with Compact Feeding Network
- Acta Electronica Sinica Vol. 41, Issue 4, Pages: 722-726(2013)
- 作者机构：
  
  华南理工大学电子与信息学院,广东,广州,510640
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China (No.61171029);Program of Science and Technology Project of Guangdong Province (No.12C42081659)
- DOI：10.3969/j.issn.0372-2112.2013.04.016
  CLC： TN82
- Published：2013
- 稿件说明：
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CHU Qing-xin, LIN Wei, LIN Wei-xin, et al. Broadband Quadrifilar Helix Antenna with Compact Feeding Network[J]. Acta Electronica Sinica, 2013, 41(4): 722-726.
DOI：

CHU Qing-xin, LIN Wei, LIN Wei-xin, et al. Broadband Quadrifilar Helix Antenna with Compact Feeding Network[J]. Acta Electronica Sinica, 2013, 41(4): 722-726. DOI： 10.3969/j.issn.0372-2112.2013.04.016.

摘要

传统的自相移馈电四臂螺旋天线(QHA)由于最小回波损耗频点和最小轴比频点不在一个频率上

因此

难以在较宽的频带内同时满足良好的阻抗匹配和圆极化特性.虽然采用功分相移网络馈电可以解决上述问题

但是馈电网络尺寸普遍较大

难以应用于手持机上.本文提出了一种底部带有紧凑的功分相移馈电网络的四臂螺旋天线

可以在宽频带内实现四个输出端功率平衡输出

相位两两相差90度.所提出的馈电网络使得四臂螺旋天线既可以实现宽带圆极化辐射

又具有小尺寸

非常适合GPS、北斗移动手持设备的应用需求.

Abstract

Conventional self-phasing method is difficult to achieve excellent impedance matching and circularly polarized (CP) radiation simultaneously over a wide band in quadrifilar helix antenna (QHA) designs.This is because the lowest points of return loss and axial ratio cannot match.Although QHA with additional feeding network can solve the problem above

the size is too large to be used in handset applications.In this paper

we proposed a QHA attached a compact feeding network on its bottom end to achieve balanced power division and quadrature phasing in a wide bandwidth.QHA with the proposed feeding network could achieve broadband CP radiation.Moreover

the configuration is compact and very suitable for GPS/CNSS portable mobile handset applications.

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