Short-circuit microstrip antenna and device including that anten

Details Short-circuit microstrip antenna and device including that anten Short-circuit microstrip antenna and device including that anten

1998-12-11

2000-10-17

Wimer, Michael C.

Communications: radio wave antennas

Antennas

Microstrip

H01Q 138

Patent

active

06133880&

ABSTRACT:
A microstrip antenna includes a composite short-circuit consisting of two conductive strips. A vertical strip, in the plane of the short-circuit between the two strips, is connected to the central conductor of a coupling line forming part of the antenna and enabling the coupling with a resonance thereof, as for example to excite such resonance. The short-circuit and the vertical strip constitute two terminals for said antenna, enabling it to be easily connected to a signal processing units, such as a transmitter. The antenna described includes two zones enabling it to operate at two frequencies. The antenna has particular utility in portable telephones and their base stations.

REFERENCES:
patent: 5952975 (1999-09-01), Pedersen et al.
R. N. Simons et al., "Coplanar-Waveguide/Microstrip Probe Coupler and Applications to Antennas", Electronics Letters, vol. 26, No. 24, Nov. 22, 1990, pp. 1998-2000.
T. D. Ormiston et al., "Microstrip Short-Circuit Patch Design equations", Microwave and Optical Technology Letters, vol. 16, No. 1, Sept. 1997, pp. 12-14.

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