Frequency Selective Surface Beamsplitter for Sub-MM Wave Polarimetric Space Science Instruments

Konferenz: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
23.03.2009 - 27.03.2009 in Berlin, Germany

Tagungsband: EuCAP 2009

Seiten: 5Sprache: EnglischTyp: PDF

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Dickie, R.; Cahill, R.; Gamble, H.; Fusco, V. (The Institute of Electronics, Communications and Information Technology, Queen’s University Belfast, Northern Ireland Science Park, Queen’s Road, Queen’s Island, Belfast BT3 9DT, Northern Ireland, UK)
Huggard, P.; Henry, M.; Oldfield, M. (Space Science & Technology Department, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX 11 0QX, UK)
Howard, P.; Grant, N.; Munro, Y. (EADS ASTRIUM, Earth Observation & Navigation Directorate, Anchorage Road, Portsmouth PO 3 5PU, Hampshire, UK)
Maagt, P. de (European Space Agency, Antennas and Submillimetre Wave Section, PO Box 299, NL 2200 AG Noordwijk, The Netherlands)

In this paper we report on the design, fabrication and measurement of a Frequency Selective Surface (FSS) which generates virtually identical spectral responses in 3% wide channels when the filter is operated in the TE and TM polarisation at 45deg incidence. The structure is formed from two closely spaced freestanding arrays with unit cells containing nested short circuited rectangular loop and dipole slot elements. The FSS provides 30 dB isolation between the frequency bands 316.5 – 325.5 GHz and 349.5 – 358.5 GHz and 0.6 dB insertion loss. Simulated and measured transmission coefficients are in close agreement.