| 一种高性能Ka频率综合器设计与实现 |
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| 作者姓名： | 孙远新 华书一 袁野 袁泮江 |
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| 作者单位： | 西安卫星测控中心天津测控站 |
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| 摘 要： | 某航天测控系统中Ka下行链路对频率综合器的各项性能指标提出了很高的要求。在设计中,采用对参考频率、L频段本振、S频段频综和Ku频段频综分别设计的方案,综合考虑多种因素,充分利用锁相环、DDS、窄带VCO和正交混频等技术的优势,最终实现了对频率的精确控制、精密步进和良好的相噪特性。
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| 关 键 词： | DDS 相位噪声 频率合成器 正交混频 |
Design and Realization of a High-performance Frequency Synthesizer for Ka-band Down Link |
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| Authors: | Sun Yuanxin Hua Shuyi Yuan Ye Yuan Panjiang |
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| Institution: | (Tianjin Measuring and Control Station of Xi'an Satellite Control Center, Tianjin 301900, China) |
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| Abstract: | The frequency synthesizer for the data processing of Ka-band downlink in a TT&C system must have good performance. This paper separately designs the reference frequency signal, L-band LO, and S-band and Ku-band frequency synthesizers, and takes full advantage of the techniques such as phase-locked loop, DDS, narrowband VCO and orthogonal frequency-mixing. As a result, precise control of frequency, precision stepping and good phase noise characteristic are realized. |
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| Keywords: | DDS Phase noise Frequency synthesizer Orthogonal frequency mixing |
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