过模圆转弯波导的设计与实验

丁艳峰; 刘庆想; 张健穹

doi:doi:10.3788/hplpb20112308.2135

强激光与粒子束, 2011, 23 (8): 2135, 网络出版: 2011-09-20

过模圆转弯波导的设计与实验

Design and experiment study of overmode bend circular waveguide

论文大纲

丁艳峰 ^*刘庆想张健穹

作者单位

西南交通大学物理科学与技术学院，成都 610031

过模圆波导转弯波导模式变换馈线高功率微波 overmode circular waveguide bend waveguide mode converter feed line high power microwave

摘要

研究了一种新型的过模圆转弯波导，可实现圆波导TM01模的转弯传输。介绍了这种过模圆转弯波导的基本原理：即沿转弯平面插入一块金属板，将圆波导转换为两个半圆波导。圆波导TM01模在半圆波导中转换为半圆波导TE11模，经转弯传输后，重新将半圆波导TE11模转换为圆波导TM01模，从而实现圆波导TM01模的转弯传输。基于这一原理设计了一个中心频率为2.856 GHz、转弯45°的过模圆转弯波导，并进行了数值模拟和实验研究。实验结果表明：其转弯半径为123.7 mm，转弯半径较小；在中心频点2.856 GHz处，传输损耗约为0.247 dB，驻波系数为1.217；在2.75～2.95 GHz的频率范围内传输损耗小于0.53 dB，驻波系数小于1.34。

Abstract

One novel overmode bend circular waveguide is designed and studied. The novel approach is as follows:the circular waveguide TM01 mode is converted to half-circular waveguide TE11 mode by inserting fins into the overmode bend circular waveguide along the plane of bend. After transmission by the bend, the half-circular waveguide TE11 mode is re-converted to the circular waveguide TM01 mode. An overmode bend circular waveguide of bend 45° for 2.856 GHz based on this principle is designed and optimized, as well as studied. The experiment results show that：at the center frequency of 2.856 GHz, the loss is about 0.247 dB and VSWR is 1.217. In the range of 2.75 GHz to 2.95 GHz, the loss and VSWR are below 0.53 dB and 1.34 respectively. Curvature radius of the overmode bend circular waveguide is 123.7 mm. Overmode bend circular waveguide has the advantages of small bend radius, simple structure and easy to machining, which can be applied to circular waveguide connection and bend in the feed network of high power microwave.

参考文献

[1] Barker R J,Schamiloglu E.High-power microwave sources and technologies［M］.New York:IEEE Press,2001.

[2] Keam R B,Williamson A G.Analysis of general coaxial-line/radial-line junction［J］.IEEE Trans on Microwave Theory and Techniques,1993,141(3):516-520.

[3] Wesley G L.Theoretical evaluation of nonlinear tapers for a high-power gyrotron［J］.IEEE Trans on Microwave Theory and Techniques,1990,38(11):1617-1613.

[4] Benford J,Swegle J A,Schamiloglu E.High power microwaves［M］.New York:CRC Press,2006.

[5] 袁成卫,钟辉煌，钱宝良.高功率微波转弯圆波导设计［J］.强激光与粒子束，2009,21(2):255-258.(Yuan Chengwei,Zhong Huihuang,Qian Baoliang.Design of bend circular waveguides for high-power microwave applications.High Power Laser and Particle Beams,2009,21(2):255-258).

[6] 张克潜,李德杰.微波光电子学中的电磁理论［M］.北京：电子工业出版社,2001.(Zhang Keqian,Li Dejie.Electromagnetic theory for microwaves and optoelectronics.Beijing:Electronic Industry Press,2001).

[7] 郑伟,王龙.半圆形波导中的电磁场［J］.大学物理,2007,26（9）:60-63.（Zheng Wei,Wang Long.The electromagnetic field in half-round waveguide.College Physics, 2007，26（9）：60-63)

[8] 刘庆想,袁成卫.同轴插板式 TEM-TE11模式转换器的设计与实验研究［J］.强激光与粒子束,2005,17(6):897-900.(Liu Qingxiang,Yuan Chengwei.Design and experiment study of coaxial fin-inserted TEM-TE11 mode converter.High Power Laser and Particle Beams,2005,17(6):897-900)

[9] 张晓萍,钟辉煌,袁成卫.微波源中同轴提取区支撑杆的理论分析与设计［J］.微波学报,2004,20(2):46-50.(Zhang Xiaoping,Zhong Huihuang,Yuan Chengwei.Theoretical analysis and design of the support legs in coaxial extractor of microwave source. Journal of Microwave,2004,20(2):46-50)

[10] 张健穹,刘庆想,李相强,等.三角形栅格矩形径向线螺旋阵列天线的设计与实验研究［J］.强激光与粒子束,2009,21（4）:550-554.(Zhang Jianqiong,Liu Qingxiang,Li Xiangqiang,et al.Design and experimental research on triangle-grid radial-line helical rectangular array antenna.High Power Laser and Particle Beams,2009,21(4):550-554).葛名立,刘庆想,李相强,等.同轴插板式相移器数值模拟与实验研究［J］.强激光与粒子束,2007,19（5）:804-807.(Ge Mingli,Liu Qingxiang,Li Xiangqiang,et al.Numerical simulation and experimental research of coaxial-inserting-fin phase shifter. High Power Laser and Particle Beams,2007,19(5):804-807)

丁艳峰, 刘庆想, 张健穹. 过模圆转弯波导的设计与实验[J]. 强激光与粒子束, 2011, 23(8): 2135. Ding Yanfeng, Liu Qingxiang, Zhang Jianqiong. Design and experiment study of overmode bend circular waveguide[J]. High Power Laser and Particle Beams, 2011, 23(8): 2135.

过模圆转弯波导的设计与实验

关于本站 Cookie 的使用提示

全站搜索

过模圆转弯波导的设计与实验

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索