Communications: radio wave antennas – Antennas – Microstrip
Patent
1977-04-01
1978-12-26
Smith, Alfred E.
Communications: radio wave antennas
Antennas
Microstrip
343770, 343789, H01Q 1310, H01Q 142, H01Q 0000
Patent
active
041318927
ABSTRACT:
A resonant circularly or elliptically polarized 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. The preferred embodiment comprises interdigitated antenna structures.
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.
Munson Robert E.
Murphy Lawrence R.
Sanford Gary G.
Ball Corporation
Barlow Harry
Haynes J. David
Smith Alfred E.
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