毫米波固态高功率合成关键技术研究
发布时间：2018-08-14 09:56
【摘要】：随着半导体工艺的发展,单片功率放大器性能在不断提高。但是在毫米波频段单个功率放大器芯片的输出功率仍不能完全满足系统需要,因此基于固态放大器的高功率合成技术一直是毫米波领域研究的热点,同时也是本文研究重点。本文的主要成果有:1设计了两种新型的宽带矩形波导到圆波导01TE模的模式转换结构:第一种是兼顾marine型与花瓣形的宽带模式转换器,这种电路结构带宽宽,体积小,兼具marine型以及花瓣形模式转换器的优势。在30-40GHz的频带内,圆波导端口01TE模式的反射系数在-20dB以下,对其他低次模式抑制度大于30dB。第二种是八路花瓣形宽带模式转换器,这种电路带宽宽,体积小且容易加工。在30.5-39.5GHz的频率范围内,八路花瓣型模式转换器圆波导端口01TE模式的回波损耗小于-20dB,对其他低次模式的抑制都在40dB以上。同时,本文分别利用四路花瓣形模式转换器以及八路花瓣形模式转换器在Ka频段制作了基于圆波导01TE模式的15/30路功率合成网络。2设计了两种基于扇形波导径向架构的多路功率合成网络,分别是基于?/2扇形波导以及基于?/4扇形波导径向16路功率合成器。这类电路既具有径向架构功率合成结构紧凑,合成损耗低等优势,同时又能避免传统圆波导径向多路合成器分支路端口幅度不一致的问题。电磁仿真结果表明,这两种结构在32-38GHz内16路分支路端口的幅度不平衡性小于0.2dB。3设计了一种宽带的基于波导Y分支使用E面有耗平面传输线的两路功率合成器,平行于E面的有耗传输线能解决传统的波导Y型分支分支路端口间隔离度和分支路端口驻波特性差的问题。同时这种电路结构加工、装配简单方便。测试结果表明:在整个Ka频段,分支路端口的回波损耗低于-12dB,分支路端口间的隔离度大于18dB。4设计了一种基于有耗网络的圆波导径向30路功率合成器,该合成器采用多路径向构架和阻性有耗网络,实现了低损耗多路功率合成,并解决了传统圆波导径向多路功率合成器端口驻波和端口隔离度性能差的问题,可用于满足毫米波多路高效率高功率合成需求,此外该功率合成器电路还具有小型化,宽频带等优点。电磁仿真结果表明在32-38GHz频段内该电路支路间隔离度全部大于17dB,分支路端口的反射系数优于15dB。
[Abstract]:With the development of semiconductor technology, the performance of monolithic power amplifier is improving. However, the output power of a single power amplifier chip in the millimeter-wave band still can not meet the needs of the system, so high-power synthesis technology based on solid-state amplifier has been a hot spot in millimeter-wave field, and it is also the focus of this paper. The main results of this paper are as follows: 1 designed two new mode conversion structures of broadband rectangular waveguide to circular waveguide 01TE mode. The first one is a broadband mode converter with both marine and petal shape. This circuit has wide bandwidth and small size. Both marine type and petal mode converter advantages. In the frequency band of 30-40GHz, the reflection coefficient of 01TE mode on the circular waveguide port is below -20 dB, and the suppression degree for other low-order modes is more than 30 dB. The second is eight petal-shaped broadband mode converters, which have wide bandwidth, small size and easy processing. In the frequency range of 30.5-39.5GHz, the echo loss of the 01TE mode of eight petal mode converters is less than -20 dB, and the suppression of other low-order modes is above 40dB. meanwhile In this paper, four petal mode converters and eight petal mode converters are used to fabricate 15 / 30 power synthesizer networks based on circular waveguide 01TE mode in Ka band respectively. Two kinds of multiplex structures based on sector waveguide radial structure are designed. Path power synthesis network, They are based on a / 2 sector waveguide and a / 4 sector waveguide based on a radial 16 channel power synthesizer. This kind of circuit not only has the advantages of compact radial structure, low synthesis loss and so on, but also can avoid the problem of inconsistent amplitude of branch port of traditional circular waveguide radial multiplexer. The results of electromagnetic simulation show that the amplitude unbalance of these two structures in 32-38GHz is less than that in 0.2dB.3. A wideband two-channel power synthesizer based on waveguide Y branch using E-plane lossy plane transmission line is designed. A lossy transmission line parallel to the E plane can solve the problems of the isolation between the ports of the Y-type branch of the waveguide and the difference of the standing wave characteristics of the branch ports. At the same time, the circuit structure processing, simple and convenient assembly. The test results show that in the whole Ka band, the echo loss of the branch port is lower than -12 dB, and the isolation between the branch ports is greater than that of 18dB.4. A radial 30 channel power synthesizer with circular waveguide based on lossy network is designed. This synthesizer uses multi-channel radial frame and resistive lossy network to realize low loss multipath power synthesis, and solves the problem of poor performance of standing wave and port isolation of traditional circular waveguide radial multiplex power synthesizer. It can be used to meet the demand of millimeter-wave multichannel high efficiency and high power synthesizer. In addition, the power synthesizer has the advantages of miniaturization, wide band and so on. The electromagnetic simulation results show that the isolation between the branches in the 32-38GHz band is all greater than 17 dB, and the reflection coefficient of the branch port is better than 15 dB.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN73
本文编号：2182496
[Abstract]:With the development of semiconductor technology, the performance of monolithic power amplifier is improving. However, the output power of a single power amplifier chip in the millimeter-wave band still can not meet the needs of the system, so high-power synthesis technology based on solid-state amplifier has been a hot spot in millimeter-wave field, and it is also the focus of this paper. The main results of this paper are as follows: 1 designed two new mode conversion structures of broadband rectangular waveguide to circular waveguide 01TE mode. The first one is a broadband mode converter with both marine and petal shape. This circuit has wide bandwidth and small size. Both marine type and petal mode converter advantages. In the frequency band of 30-40GHz, the reflection coefficient of 01TE mode on the circular waveguide port is below -20 dB, and the suppression degree for other low-order modes is more than 30 dB. The second is eight petal-shaped broadband mode converters, which have wide bandwidth, small size and easy processing. In the frequency range of 30.5-39.5GHz, the echo loss of the 01TE mode of eight petal mode converters is less than -20 dB, and the suppression of other low-order modes is above 40dB. meanwhile In this paper, four petal mode converters and eight petal mode converters are used to fabricate 15 / 30 power synthesizer networks based on circular waveguide 01TE mode in Ka band respectively. Two kinds of multiplex structures based on sector waveguide radial structure are designed. Path power synthesis network, They are based on a / 2 sector waveguide and a / 4 sector waveguide based on a radial 16 channel power synthesizer. This kind of circuit not only has the advantages of compact radial structure, low synthesis loss and so on, but also can avoid the problem of inconsistent amplitude of branch port of traditional circular waveguide radial multiplexer. The results of electromagnetic simulation show that the amplitude unbalance of these two structures in 32-38GHz is less than that in 0.2dB.3. A wideband two-channel power synthesizer based on waveguide Y branch using E-plane lossy plane transmission line is designed. A lossy transmission line parallel to the E plane can solve the problems of the isolation between the ports of the Y-type branch of the waveguide and the difference of the standing wave characteristics of the branch ports. At the same time, the circuit structure processing, simple and convenient assembly. The test results show that in the whole Ka band, the echo loss of the branch port is lower than -12 dB, and the isolation between the branch ports is greater than that of 18dB.4. A radial 30 channel power synthesizer with circular waveguide based on lossy network is designed. This synthesizer uses multi-channel radial frame and resistive lossy network to realize low loss multipath power synthesis, and solves the problem of poor performance of standing wave and port isolation of traditional circular waveguide radial multiplex power synthesizer. It can be used to meet the demand of millimeter-wave multichannel high efficiency and high power synthesizer. In addition, the power synthesizer has the advantages of miniaturization, wide band and so on. The electromagnetic simulation results show that the isolation between the branches in the 32-38GHz band is all greater than 17 dB, and the reflection coefficient of the branch port is better than 15 dB.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN73
【参考文献】
相关期刊论文 前6条
1 董亮;蓝永海;顾卫东;;Q波段十二路径向波导合成/分配器设计[J];通信对抗;2015年03期
2 牛海君;;一种Ka波段径向波导功率合成器设计[J];舰船电子对抗;2015年02期
3 杨强;吴沛涛;;一种Ka波段宽带功率合成放大器的设计[J];无线电工程;2013年07期
4 江志浩;蔡德荣;王孜;;空间功率合成技术的合成效率问题研究[J];无线电通信技术;2008年02期
5 林为干 ,刘仁厚 ,邬琳若;扇形、椭圆、半椭圆波导的研究[J];电子学报;1980年03期
6 陈孟尧;;扇形波导[J];兰州大学学报;1963年01期
相关博士学位论文 前1条
1 谢小强;固态毫米波波导空间功率合成技术研究[D];电子科技大学;2009年
相关硕士学位论文 前2条
1 杨贵挺;微波宽带固态高功率合成关键技术研究[D];电子科技大学;2016年
2 周强;毫米波固态功率合成[D];电子科技大学;2015年
，本文编号：2182496
本文链接：https://www.wllwen.com/kejilunwen/dianzigongchenglunwen/2182496.html
