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A Constant Corrugation Circular Waveguide for High-Pass Signal Diagnostics in ECEI System at 75–110 GHz
Journal of Infrared Millimeter and Terahertz Waves ( IF 2.9 ) Pub Date : 2020-06-24 , DOI: 10.1007/s10762-020-00720-3
Hirenkumar V. Dhuda , Piyush N. Patel , Hiteshkumar B. Pandya

In this work, a high-pass waveguide filter with constant circular corrugations is presented. The proposed design allows propagation of HE11 mode which has similar Gaussian characteristics of the signals present in a fusion reactor. The device is designed to operate in W-band, i.e., 75–110 GHz, and it generates a wide passband of approximately 30 GHz. The internal corrugations in the proposed design are kept constant which makes fabrication relatively simpler. The proposed high-pass metallic waveguide is numerically analyzed, simulated, and fabricated for experimental validation. The measured transmission co-efficient (S21) shows good agreement with the simulated result and passband of 28 GHz was obtained. The high-pass filter can be effectively used in the electron cyclotron emission imaging (ECEI) system used in fusion plasma experiments for signal diagnostics.

中文翻译:

用于75-110 GHz ECEI系统中高通信号诊断的恒定波纹圆形波导

在这项工作中,提出了具有恒定圆形波纹的高通波导滤波器。提出的设计允许传播HE 11模式,该模式具有与聚变反应堆中存在的信号相似的高斯特性。该设备设计为在75-110 GHz的W波段工作,并产生大约30 GHz的宽通带。所提出的设计中的内部波纹保持恒定,这使得制造相对简单。对提出的高通金属波导进行了数值分析,模拟和制造,以进行实验验证。测得的传输系数(S 21)与仿真结果吻合良好,并获得了28 GHz的通带。高通滤波器可以有效地用于融合等离子体实验中用于信号诊断的电子回旋发射成像(ECEI)系统。
更新日期:2020-06-24
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