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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.

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