太赫兹科学与电子信息学报, 2016, 14 (2): 229, 网络出版: 2016-12-07  

TE01弯头切比雪夫设计方法

Chebyshev design method for TE01 bend
作者单位
1 中国工程物理研究院 电子工程研究所,四川 绵阳 621999
2 清华大学 电子工程系,北京 100084
摘要
TE01 弯头在高功率微波系统装配中有着重要作用。随着高功率微波朝着高功率、大带宽方向发展,对TE01 弯头提出了高功率容量、更大工作带宽的需求。传统设计方法往往存在带宽较窄,功率容量受限的问题。TE01 弯头设计难点在于存在TM11 简并模。本文在椭圆波导解简并的基础上,提出了TE01 弯头切比雪夫设计方法。采用耦合波理论分析完成了弯头设计过程。仿真设计了Ka 频段椭圆弯头结构,长半轴为7 mm,短半轴为5.25 mm。计算机仿真结果表明:模式保留效率95%以上的频率范围从32 GHz 到45.1 GHz,验证了设计方法的有效性。
Abstract
TE01 bends play an important role in the High Power Microwave(HPM) system. TE01 bends should bear higher power and wider band width as the HPM develops towards higher power and wider band. TE01 bends designed by traditional method have the disadvantages of narrow band and limited power capacity. The bottleneck of TE01 bend design is the existence of TM11, which is the degenerated mode of TE01. In this paper,a Chebyshev design method based on the elliptical waveguide is proposed, and in the elliptical waveguide, the TE01 and TM11 are no longer the degenerated modes. The coupled mode theory is adopted to finish the design procedure. A Ka band TE01 bend is theoretically designed, and the semi-major axis and semi-minor axis are 7 mm and 5.25 mm, respectively. Computer simulation results show that the frequency ranges from 32 GHz to 45.1 GHz(mode preserve efficiency keeps above 95%), and the effectiveness is verified.

王强, 郭凯, 杨春, 唐先发. TE01弯头切比雪夫设计方法[J]. 太赫兹科学与电子信息学报, 2016, 14(2): 229. WANG Qiang, GUO Kai, YANG Chun, TANG Xianfa. Chebyshev design method for TE01 bend[J]. Journal of terahertz science and electronic information technology, 2016, 14(2): 229.

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