Shared antenna and portable radio device using the same

Details Shared antenna and portable radio device using the same Shared antenna and portable radio device using the same

1997-12-03

2000-11-21

Wong, Don

Communications: radio wave antennas

Antennas

With radio cabinet

343700MS, 343895, H01Q 136

Patent

active

061509841

ABSTRACT:
A shared antenna in that a linear antenna is electrically connected to the upper end of a power pin of a microstrip plane antenna via a capacitive element. The shared antenna is used in both satellite communications and ground communications and can be used without a need of mechanical switching of the antenna. Further, crimped radiating elements having spatial expansion are electrically connected to the vicinity of the upper end of a feed pin of a microstrip plane antenna via a capacitive element, thereby realizing superior impedance matching and radiation patterns of the shared antenna.

REFERENCES:
patent: 5220334 (1993-06-01), Raguenet et al.
patent: 5592184 (1997-01-01), Cassel et al.
patent: 5650792 (1997-07-01), Moore et al.

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