L频段低杂散下变频器设计

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中图分类号：TN773.4 文献标志码：A

文章编码：1672-7274（2025）07-0045-03

Design of a L-band Down-conversion with Low Spurious

CHANG Haixing，DENG Shiming，LI Yang （NanjingPandaHanda TechnologyCo.，Ltd.，Nanjing21oo14，China）

Abstract：A L-band down-conversion with low spurious is designed in this paper. The downconverter can convert the frequency （750 MHz～1 450 MHz） of the L-band signal to 70MHz .The downconverter adoptsa dual-frequency conversionschemeandselectsafilter withhighout-of-band rejection toachieve lowspurious output.The testresults of the downconverter meet the requirements ofthe performance index，which verifies the feasibility of the scheme.

Keywords：L-band; low spuriousup; down-converter

0 引言

L频段下变频器是卫星通信系统下行链路的重要组成部分，在无线通信、电子对抗、导航、雷达等多个领域起到非常关键的作用。（剩余3053字）