Lowpass FSS for 50-230 GHz Quasi-Optical Demultiplexing for the MetOp Second Generation Microwave Sounder Instrument

Raymond Dickie, Steven Christie, Robert Cahill, Paul Baine, Vincent Fusco, Kai Parow-Souchon, Manju Henry, Peter G. Huggard, Robert S. Donnan, Oleksandr Sushko, Massimo Candotti, Rostyslav Dubrovka, Clive G. Parini, Ville Kangas

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)
334 Downloads (Pure)

Abstract

This paper reports the design, manufacture and characterisation of a new frequency selective surface (FSS) structure which meets the demanding requirements for transmission of 50.2 − 57.7 GHz radiation simultaneously for TE and TM polarizations at 45° incidence, and reflection of signals in four discrete higher frequency bands centered at 89 GHz, 165.5 GHz, 183.3 GHz and 229 GHz. The FSS is required for a quasi-optical network, which was developed during preparatory breadboarding of the Microwave Sounder instrument. The 100 mm diameter ultra-wide band FSS must exhibit ≤0.25 dB loss for all signals in the above bands, and has to satisfy the requirements of the space environment. The FSS is formed by a periodic metal film array sandwiched between two 0.83 mm thick, optically flat, fused quartz substrates. It has 19,000 unit cells composed of two compact resonant slot elements, a meandering elliptical annulus and a folded dipole. Spectral transmission and reflection measurements in the 50 − 230 GHz frequency range yielded results that are in excellent agreement with numerical predictions.
Original languageEnglish
Pages (from-to)5312-5321
JournalIEEE Transactions on Antennas and Propagation
Volume65
Issue number10
Early online date17 Aug 2017
DOIs
Publication statusPublished - 01 Oct 2017

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