小型化X波段高杂散抑制低相位噪声微波变频源的研制
发布时间：2018-11-17 14:14
【摘要】：随着雷达设备应用渠道的发展,应用于弹载或机载环境下的频率综合器的需求也会越来越大,所以必须迅速开展应用于复杂机械环境下的频率综合器的研究,并切实提高复杂环境下频率综合器的技术指标,使其既满足国民经济的发展,又满足国防事业的需要,具有一定的战略意义和经济意义。因此,研制小型化X波段低相位噪声高杂散抑制微波变频源是众多微波组件设计及开发单位的工作重点。本文设计了一种高杂散低相噪微波变频源,介绍了其工作原理、设计方法、关键技术和测试结果及产品的主要性能指标。本论文通过研究以下两个方面的设计方法实现了高杂散和低相噪的微波频率源:1.采用混频锁相环的设计方案不但解决了在X波段的多频点变频源的低相位噪声的要求,还产生X波段低相位噪声的信号。如果是单频点则可通过直接倍频或采取介质取样锁相环设计技术来实现,但对于多频点的变频源则需要采取直接频率合成或者锁相环频率合成技术。考虑到直接频率合成方式对杂散抑制很难控制,因此采用了锁相环频率合成和混频处理相结合的方式,也就是混频锁相环设计技术。混频锁相环设计技术将混频处理置于锁相环内,通过锁相环环路滤波器的作用有效的滤除混频杂散,利用本振信号很低的相位噪声来保证最终产生信号的相位噪声要求。2.X波段的多频点变频源通过采用高杂散抑制设计技术,在利用混频锁相环产生X波段的多频点变频源的设计中,除需要的9.6GHz~9.9GHz信号外,还存在很多其它多种频率成分,如100MHz、900MHz和9GHz等等。经实验证明,本文给出的方法设计灵活、通用性强、成本低,较好的满足了对性能指标的要求。
[Abstract]:With the development of radar equipment application channel, the demand of frequency synthesizer used in missile or airborne environment will be more and more great. Therefore, the research of frequency synthesizer applied in complex mechanical environment must be carried out rapidly. It is of strategic and economic significance to improve the technical index of frequency synthesizer in complex environment so that it can not only meet the development of national economy but also meet the needs of national defense. Therefore, the development of a miniaturized X-band low phase noise high spurious suppression microwave frequency conversion source is the focus of many microwave module design and development units. In this paper, a kind of microwave frequency conversion source with high spurious and low phase noise is designed, and its working principle, design method, key technology, test results and main performance indexes of the product are introduced. In this paper, a microwave frequency source with high spurious noise and low phase noise is realized by studying the following two design methods: 1. The design scheme of mixed-frequency phase-locked loop not only solves the requirement of low phase noise of multi-frequency point frequency conversion source in X-band, but also produces the signal of X-band low phase noise. If it is a single frequency point, it can be realized by direct frequency doubling or the design technology of dielectric sampling phase-locked loop, but for the multi-frequency point frequency source, direct frequency synthesis or phase-locked loop frequency synthesis technology is needed. Considering that the direct frequency synthesis is difficult to control the spurious suppression, a phase locked loop (PLL) frequency synthesis combined with mixing processing is adopted, that is, the design technique of mixed-frequency PLL (mixed-frequency PLL). The design technology of mixing phase-locked loop puts the mixing process in the phase-locked loop, and effectively filters out the mixed frequency stray by the effect of the phase-locked loop filter. The low phase noise of the local oscillator signal is used to ensure the phase noise requirement of the final signal. 2. The design technique of high spurious suppression is used to design the multi-frequency point frequency converter in X band. In the design of X-band multi-frequency point frequency conversion source generated by mixed-frequency phase-locked loop, there are many other frequency components besides the required 9.6GHz~9.9GHz signal, such as 100MHz, 900MHz, 9GHz and so on. It is proved by experiments that the method presented in this paper is flexible in design, good in generality, low in cost and satisfied with the requirements of performance index.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN74
本文编号：2338087
[Abstract]:With the development of radar equipment application channel, the demand of frequency synthesizer used in missile or airborne environment will be more and more great. Therefore, the research of frequency synthesizer applied in complex mechanical environment must be carried out rapidly. It is of strategic and economic significance to improve the technical index of frequency synthesizer in complex environment so that it can not only meet the development of national economy but also meet the needs of national defense. Therefore, the development of a miniaturized X-band low phase noise high spurious suppression microwave frequency conversion source is the focus of many microwave module design and development units. In this paper, a kind of microwave frequency conversion source with high spurious and low phase noise is designed, and its working principle, design method, key technology, test results and main performance indexes of the product are introduced. In this paper, a microwave frequency source with high spurious noise and low phase noise is realized by studying the following two design methods: 1. The design scheme of mixed-frequency phase-locked loop not only solves the requirement of low phase noise of multi-frequency point frequency conversion source in X-band, but also produces the signal of X-band low phase noise. If it is a single frequency point, it can be realized by direct frequency doubling or the design technology of dielectric sampling phase-locked loop, but for the multi-frequency point frequency source, direct frequency synthesis or phase-locked loop frequency synthesis technology is needed. Considering that the direct frequency synthesis is difficult to control the spurious suppression, a phase locked loop (PLL) frequency synthesis combined with mixing processing is adopted, that is, the design technique of mixed-frequency PLL (mixed-frequency PLL). The design technology of mixing phase-locked loop puts the mixing process in the phase-locked loop, and effectively filters out the mixed frequency stray by the effect of the phase-locked loop filter. The low phase noise of the local oscillator signal is used to ensure the phase noise requirement of the final signal. 2. The design technique of high spurious suppression is used to design the multi-frequency point frequency converter in X band. In the design of X-band multi-frequency point frequency conversion source generated by mixed-frequency phase-locked loop, there are many other frequency components besides the required 9.6GHz~9.9GHz signal, such as 100MHz, 900MHz, 9GHz and so on. It is proved by experiments that the method presented in this paper is flexible in design, good in generality, low in cost and satisfied with the requirements of performance index.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN74
【共引文献】
相关硕士学位论文 前4条
1 薛龙龙;宽带通信中有记忆射频功率放大器建模方法研究[D];西安电子科技大学;2014年
2 周春阳;微波大功率负载牵引测试系统中的Ka波导调配器设计与测试方法研究[D];西安电子科技大学;2014年
3 宋韬;高效率CMOS功率放大器的研究与设计[D];西安电子科技大学;2014年
4 尚赞玉;矢量网络分析仪校准新算法的研究[D];西安电子科技大学;2014年
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