Microstrip radiator with folded resonant cavity

Details Microstrip radiator with folded resonant cavity Microstrip radiator with folded resonant cavity

1977-04-01

1978-12-26

Smith, Alfred E.

Communications: radio wave antennas

Antennas

Microstrip

343846, H01Q 138, H01Q 148

Patent

active

041318935

ABSTRACT:
A resonant microstrip radiator wherein the size of the radiator is reduced in the resonant or non-resonant dimensions, or both, without reducing the effective resonant dimension or substantially lowering the efficiency of the radiator. Reduction of the resonant dimension is provided by folding the resonant cavity, while reduction of the non-resonant dimension is facilitated by utilization of a low density, low loss dielectric, such that the loss resistance of the element is appreciable with respect to the radiation resistance of the element. Also disclosed are interdigitated antenna structures and provisions for circularly or elliptically polarized radiation.

REFERENCES:
patent: 2684444 (1954-07-01), Fales
patent: 3478362 (1969-11-01), Ricardi et al.
patent: 3823404 (1974-07-01), Buie, Jr.
patent: 4051477 (1977-09-01), Murphy et al.

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