电子元件与材料2026，Vol.45Issue(3)：320-328,9.DOI:10.14106/j.cnki.1001-2028.2026.1377
用于卫星导航终端的抗同频干扰电路研究与设计
Research and design of anti-co-frequency interference circuit for satellite navigation terminal
麦嘉洛 1林福民1
作者信息
- 1. 广东工业大学 物理与光电工程学院,广东 广州 510006
- 折叠
摘要
Abstract
To address the problem of satellite navigation terminal systems being interfered by radar co-frequency signals,this study proposed a design method for anti-co-frequency interference circuits applied to satellite navigation terminals.Utilizing the inherent characteristic differences between linearly polarized waves and circularly polarized waves,a combined circuit consisting of a 90°coupler and a radio frequency(RF)unidirectional circuit was adopted to suppress linearly polarized waves while maintaining the normal reception of circularly polarized satellite navigation signals.A matching network was designed for the dual B1 and B2 frequency bands to solve the technical difficulties of resisting co-frequency interference from linearly polarized radar waves.Measured results showed that the suppression depth of linearly polarized interference waves was less than-5 dB within both frequency bands,among which the suppression depth of linearly polarized interference waves reached-10.3 dB at 1.207 GHz and 1.561 GHz.This study provides an effective solution to the problem of satellite navigation terminals being interfered by co-frequency signals and has significant engineering application value.关键词
同频干扰/耦合器/相位/圆极化/线极化/抑制深度Key words
co-frequency interference/coupler/phase/circularly polarized/linearly polarized/suppression depth分类
信息技术与安全科学引用本文复制引用
麦嘉洛,林福民..用于卫星导航终端的抗同频干扰电路研究与设计[J].电子元件与材料,2026,45(3):320-328,9.
