Design of Millimeter-Wave High-Power Power Monitoring Miter Bend Based on Aperture-Coupling

QIN Long(秦龙); ZHAO Qing(赵青); LIU Shuzhang(刘述章)

doi:10.1088/1009-0630/16/7/14

Plasma Science and Technology > 2014 > 16(7): 712-715. > DOI: 10.1088/1009-0630/16/7/14

QIN Long(秦龙), ZHAO Qing(赵青), LIU Shuzhang(刘述章). Design of Millimeter-Wave High-Power Power Monitoring Miter Bend Based on Aperture-Coupling[J]. Plasma Science and Technology, 2014, 16(7): 712-715. DOI: 10.1088/1009-0630/16/7/14

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Design of Millimeter-Wave High-Power Power Monitoring Miter Bend Based on Aperture-Coupling

School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China

Funds: supported by International S&T Cooperation Program of China (No. 2011DFA63190), and National Natural Science Foundation of China (No. 11275045), and the International Cooperation Plan Program of Sichuan Province, China (No. M1701040113HH0001)

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Received Date: May 20, 2013

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Abstract

Abstract

A directional coupler in a miter bend was designed to monitor the microwave power of the transmission line in an electron cyclotron resonance heating (ECRH) system. It is based on aperture-coupling theory and simulation of an electromagnetic (EM) field to design and opti- mize the 140 GHz high-power directional coupler. In addition, we simulated the double-aperture directional coupler by using three-dimensional (3D) EM simulation software, in which the central frequency is 140 GHz, coupling factor is about –70 dB, and directivity is greater than 17dB. The results show that such a coupler is a viable tool for power measurement in high-power transmission systems.
- ECRH,
- power monitoring,
- aperture-coupling,
- 140 GHz,
- transmission line

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References (14)

References

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