微波毫米波固态驱动前端关键技术研究
发布时间：2018-12-06 08:50
【摘要】：微波/毫米波功率模块是由固态驱动前端、行波管放大器以及直流电源构成的微波/毫米波电子模块。它既具有了固态驱动前端的低噪声、高增益的优势,也具有了电子真空器件工作频带宽、大功率、高效率的特点。在现代军事电子尤其是电子战中的发射系统中得到广泛的应用。由于电子真空器件的增益不平坦,往往呈现两边低,中间高的特点。为了使其能在各个频点都实现等功率输出,往往需要对其输入功率进行一定程度的调节。固态驱动前端除了能够为行波管放大器提供必要的功率驱动外,也能对其输入功率进行均衡。均衡器作为其中的关键器件,按照需求对各频点的功率进行一定的衰减。本文在传统均衡器机构的基础上,为了提高均衡器的设计精度,提高均衡曲线的多样性,特别是解决均衡曲线的频带搬移问题,以及工作带宽的连续控制问题,采用一种新型的枝节加载型微带均衡器。利用在枝节与吸收电阻接触点加载一段枝节的办法,改变输入阻抗开路点的位置,并依靠原枝节锁定谐振频率,解决了开路点搬移过程中的谐振点偏移问题,简化了均衡器设计。并在此基础上提出一种开/短路枝节均衡器,利用开路及短路枝节的阻抗相交特性,改变谐振枝节的特性阻抗,使其枝节开路点同时压缩或者扩张,实现了均衡曲线工作带宽的连续控制,弥补了传统均衡结构在此方面的不足。本文还研制了2~6GHz和32~40GHz两个频段的功率驱动模块,经过测试,在每个频点都达到了1.5dB的精度要求。
[Abstract]:Microwave / millimeter wave power module is a microwave / millimeter wave electronic module composed of solid state driving front end, traveling wave tube amplifier and DC power supply. It not only has the advantages of low noise and high gain of solid state driving front end, but also has the characteristics of frequency bandwidth, high power and high efficiency of electronic vacuum device. It is widely used in modern military electronics, especially in the launching system of electronic warfare. Because the gain of the electronic vacuum device is not flat, it often presents the characteristics of low side and high center. In order to achieve equal power output at all frequency points, it is necessary to adjust the input power to a certain extent. In addition to providing necessary power drive for TWT amplifiers, the solid-state driving front end can also equalize the input power of TWT amplifiers. As one of the key devices, the equalizer attenuates the power of each frequency point according to the demand. In this paper, based on the traditional equalizer mechanism, in order to improve the design accuracy of the equalizer and improve the diversity of the equalization curve, especially to solve the problem of the band shift of the equalizer and the continuous control of the working bandwidth. A new branch loaded microstrip equalizer is used. By loading a branch at the contact point between the branch and the absorption resistance, the position of the input impedance open circuit point is changed, and the resonant frequency is locked by the original branch, which solves the problem of the resonance point deviation during the open circuit point shift. The equalizer design is simplified. On the basis of this, an open / short circuit branch equalizer is proposed to change the characteristic impedance of the resonant branch by using the impedance intersecting characteristic of the open and short circuit branches, so that the branch opening point can be compressed or expanded at the same time. The continuous control of the working bandwidth of the equalization curve is realized, which makes up for the deficiency of the traditional equalization structure. The power driving module of 2~6GHz and 32~40GHz is also developed in this paper. After testing, the precision of 1.5dB is achieved at each frequency point.
【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】：TN715
本文编号：2365773
[Abstract]:Microwave / millimeter wave power module is a microwave / millimeter wave electronic module composed of solid state driving front end, traveling wave tube amplifier and DC power supply. It not only has the advantages of low noise and high gain of solid state driving front end, but also has the characteristics of frequency bandwidth, high power and high efficiency of electronic vacuum device. It is widely used in modern military electronics, especially in the launching system of electronic warfare. Because the gain of the electronic vacuum device is not flat, it often presents the characteristics of low side and high center. In order to achieve equal power output at all frequency points, it is necessary to adjust the input power to a certain extent. In addition to providing necessary power drive for TWT amplifiers, the solid-state driving front end can also equalize the input power of TWT amplifiers. As one of the key devices, the equalizer attenuates the power of each frequency point according to the demand. In this paper, based on the traditional equalizer mechanism, in order to improve the design accuracy of the equalizer and improve the diversity of the equalization curve, especially to solve the problem of the band shift of the equalizer and the continuous control of the working bandwidth. A new branch loaded microstrip equalizer is used. By loading a branch at the contact point between the branch and the absorption resistance, the position of the input impedance open circuit point is changed, and the resonant frequency is locked by the original branch, which solves the problem of the resonance point deviation during the open circuit point shift. The equalizer design is simplified. On the basis of this, an open / short circuit branch equalizer is proposed to change the characteristic impedance of the resonant branch by using the impedance intersecting characteristic of the open and short circuit branches, so that the branch opening point can be compressed or expanded at the same time. The continuous control of the working bandwidth of the equalization curve is realized, which makes up for the deficiency of the traditional equalization structure. The power driving module of 2~6GHz and 32~40GHz is also developed in this paper. After testing, the precision of 1.5dB is achieved at each frequency point.
【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】：TN715
【共引文献】
相关硕士学位论文 前6条
1 唐胜;微波固态驱动前端增益均衡器研究[D];电子科技大学;2011年
2 赵晓坤;微波固态功率驱动模块及其关键技术研究[D];电子科技大学;2010年
3 周太富;微波与毫米波增益均衡及放大技术研究[D];电子科技大学;2012年
4 李娇;宽带MPM驱动技术研究[D];电子科技大学;2012年
5 周沛翰;MPM宽带功率驱动技术研究[D];电子科技大学;2013年
6 王欢;毫米波增益均衡器[D];电子科技大学;2013年
，本文编号：2365773
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