中圖分類號： TN952 文獻標識碼： A DOI：10.16157/j.issn.0258-7998.211282 中文引用格式： 江潤東,，姚金杰，姬娜娜,，等. Ka波段頻率源建模分析與設計[J].電子技術(shù)應用,，2021，47(7)：12-16. 英文引用格式： Jiang Rundong,，Yao Jinjie,，Ji Nana，et al. Analysis and design of Ka-band frequency source modeling[J]. Application of Electronic Technique,，2021,，47(7)：12-16.
Analysis and design of Ka-band frequency source modeling
Jiang Rundong，Yao Jinjie,，Ji Nana,，Li Jiahao
Shanxi Key Laboratory of Signal Capturing & Process，North University of China,，Taiyuan 030051，China
Abstract： In this paper, a Ka-band frequency source for miniaturization of rendezvous parameter detection unit is designed by using PLL and multiple frequency multiplication. The output frequency of the frequency source is 36 GHz and the output power is higher than 15 dBm. In this design, the mathematical modeling method is used to model each part of the PLL, and then the transfer function of the system is obtained. Through the analysis of the system function of the closed-loop system, the system parameters that can make the system work stably are obtained. Finally, dies are fabricated on the substrate and cavity of RO4350 and RO5880 in the form of micro assembly, and then be tested. The test results show that the stable working frequency source can be obtained by using mathematical modeling.
Key words : phase locked frequency source,；mathematical modeling,；closed loop characteristic
0 引言
在固定頻率多普勒雷達體制的Ka波段交會參數(shù)探測單元中，高頻率發(fā)射信號的產(chǎn)生對系統(tǒng)極為重要,。輸出信號要求功率高,、相噪低。通常為了獲得低相噪的輸出信號,，常常采用鎖相環(huán)與直接數(shù)字式頻率合成器(Direct Digital Synthesizer,，DDS)混合使用的方式，這樣可以實現(xiàn)很低的相噪[1-2],。但是由于本文是對于需要小型化的交會參數(shù)探測單元,，這樣的方式顯然并不適用，在這樣的情況下,，低相噪不得不對小型化做出讓步,。本文使用鎖相環(huán)輸出與倍頻相結(jié)合的方法[3-4]，通過對鎖相環(huán)進行建模分析,，對鎖相環(huán)的參數(shù)進行了分析確定,，最后設計制作了一個Ka波段的頻率源，并完成了對頻率源的調(diào)試,。
