Millimeter and sub-millimeter wave frequency selective surface beamsplitter for geostationary orbit microwave radiometer

doi:10.1088/1674-1056/21/11/114101

Abstract We report the design of three frequency selective surface (FSS) filters used on the FengYun-4 (FY-4) microwave satellite, which separate five-frequency bands in the frequency range of 50-429 GHz with the insertion loss less than 0.4 dB, and separation between adjacent channels more than 20 dB for either TE or TM incidence. Firstly, we briefly introduce the disadvantages of two types of FSS filter: waveguide-array FSS and printed FSS, which are commonly employed in the millimeter and sub-millimeter wave band. In order to meet the insertion loss requirement and specified spectral transmission response, we adopt the filter composed of two closely spaced freestanding metal plates, which contains array of resonant ring slot elements. Computer simulation technology (CST) CST is used to optimize structural dimensions of the resonant unit and interlayer separation. Numerical results show that these FSS filters exhibit transmission loss less than 0.4 dB and separation between adjacent channels more than 20 dB. Simulated transmission coefficients are in close agreement with the required specification, and even exceed the performance specifications.

Keywords: millimeter and sub-millimeter wave frequency selective surface quasi-optical system

Received: 21 May 2012
Revised: 01 July 2012
Accepted manuscript online:

PACS:	41.20.-q	(Applied classical electromagnetism)
	41.20.Jb	(Electromagnetic wave propagation; radiowave propagation)
	42.15.Eq	(Optical system design)

Corresponding Authors: Cui Guang-Bin
E-mail: cgbsdlg@126.com

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Cui Guang-Bin (崔广斌), Zhao Hai-Bo (赵海博), Zhang Yong-Fang (张勇芳), Miao Jun-Gang (苗俊刚 ) Millimeter and sub-millimeter wave frequency selective surface beamsplitter for geostationary orbit microwave radiometer 2012 Chin. Phys. B 21 114101

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Millimeter and sub-millimeter wave frequency selective surface beamsplitter for geostationary orbit microwave radiometer

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