Microstrip antenna for two-frequency separate-feeding type for c

Details Microstrip antenna for two-frequency separate-feeding type for c Microstrip antenna for two-frequency separate-feeding type for c

1992-06-26

1992-12-22

Hille, Rolf

Communications: radio wave antennas

Antennas

Microstrip

343846, H01Q 138

Patent

active

051737116

ABSTRACT:
A microstrip antenna of two-frequency separate-feeding type for circularly polarized waves is disclosed, in which four radiation conductors are disposed on a dielectric plate mounted on a conducting ground plane and each radiation conductor has its marginal portion partly short-circuited via a short-circuiting conductor to the conducting ground plane and is supplied at its feeding point with power via a feeder passing through the conducting ground plane and the dielectric plate. The four radiation conductors are composed of two pairs of radiation conductors of different sizes adjusted so that two desired frequencies can simultaneously be used for transmission and for reception, respectively, the conductors of each pair being arranged to generate a circularly polarized wave.

REFERENCES:
patent: 4101895 (1978-07-01), Jones, Jr.
patent: 4700194 (1987-10-01), Ogawa et al.
Sanford, "Recent Developments in the Design of Conformal Microstrip Phased Arrays", IEEE Conf., No. 160, Mar. 7-9, 1978, pp. 105-108.

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