Title :
Frequency selective surface beamsplitter for sub-mm wave polarimetric space science instruments
Author :
Dickie, R. ; Cahill, R. ; Gamble, H. ; Fusco, V. ; Huggard, P. ; Henry, M. ; Oldfield, M. ; Howard, P. ; Grant, N. ; Munro, Y. ; de Maagt, P.
Author_Institution :
Inst. of Electron., Commun. & Inf. Technol., Queen´´s Univ. Belfast, Belfast
Abstract :
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.
Keywords :
aerospace instrumentation; antenna arrays; frequency selective surfaces; optical beam splitters; submillimetre wave antennas; TE-TM polarisation; closely spaced freestanding arrays; dipole slot elements; frequency selective surface beamsplitter; insertion loss; loss 0.6 dB; short circuited rectangular loop; spectral responses; submillimetre wave polarimetric space science instruments; transmission coefficients; Circuit simulation; Electromagnetic wave polarization; Extraterrestrial measurements; Frequency selective surfaces; Insertion loss; Instruments; Space technology; Submillimeter wave technology; Tellurium; Weather forecasting;
Conference_Titel :
Antennas and Propagation, 2009. EuCAP 2009. 3rd European Conference on
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-4753-4
Electronic_ISBN :
978-3-00-024573-2
