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Equivalent-circuit models for frequency-selective surfaces at oblique angles of incidence

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2 Author(s)
Lee, C.K. ; University of Kent, Electronics Laboratories, Canterbury, UK ; Langley, R.J.

The equivalent-circuit-modelling technique is useful for designing printed frequency-selective surfaces. A correction term is derived which enables transmission responses to be modelled at oblique angles of incidence. Models derived for arrays of gridded-square and double-square elements are compared with experimental results for plane waves at normal incidence and at oblique angles for TE- and TM-incidence. Good agreement is obtained for angles of incidence up to 45¿¿ in the principle planes. The importance of using the immittance correction terms in the models is also discussed.

Published in:

Microwaves, Antennas and Propagation, IEE Proceedings H  (Volume:132 ,  Issue: 6 )