NDLI: Dual polarised Sub-mm wave frequency selective beamsplitter

Content Provider	IEEE Xplore Digital Library
Author	Dickie, R. Cahill, R. Gamble, H.S. Fusco, V.F. Grant, N. Rea, S.P.
Copyright Year	2006
Description	Author affiliation: EADS ASTRIUM, Earth Observation, Navigation & Science Directorate, Anchorage Road, Portsmouth PO3 5PU, Hampshire, UK (Grant, N.; Rea, S.P.) \|\| The Institute of Electronics, Communications and Information Technology (ECIT), Queen¿s University Belfast, Northern Ireland Science Park, Queen¿s Road, Queen¿s Island, BT3 9DT, Northern Ireland, UK (Dickie, R.; Cahill, R.; Gamble, H.S.; Fusco, V.F.)
Abstract	In this paper we describe the design of a Frequency Selective Surface (FSS) which gives a polarisation independent spectral response when the filter is orientated at 45° incidence. The structure consists of one or more freestanding screens each containing a closely packed array of nested short circuited annular slots. A computer model is used to design a two layer FSS which can separate the bands 316.5¿325.5GHz and 349.5¿358.5GHz with >20dB isolation and <1dB insertion loss in both the TE and TM incident planes. A single periodic array, which is the basic building block of the cascaded screen structure, has been fabricated using a precision micromachining technique. Quasi-optical swept frequency transmission coefficients which were measured over the range 305¿345GHz are shown to be in good agreement with the numerical results. A concept for improving the robustness of the structure in order to provide space qualified beamsplitters for future polarimetric atmospheric sounders is presented.
Starting Page	1
Ending Page	7
File Size	457841
Page Count	7
File Format	PDF
ISBN	9789290929376
DOI	10.1109/EUCAP.2006.4584535
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-11-06
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	ESA
Subject Keyword	Frequency selective surfaces Polarization Filters Atmospheric measurements Circuits Insertion loss Micromachining Frequency measurement Tellurium Periodic structures
Content Type	Text
Resource Type	Article

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