Dual plate antenna

Details Dual plate antenna Dual plate antenna

1989-10-23

1992-01-07

Wimer, Michael C.

Communications: radio wave antennas

Antennas

With radio cabinet

343745, 455347, H01Q 124

Patent

active

050795597

ABSTRACT:
Portable radio equipment which is thin enough to enhance portability and, yet, has a sufficiently high antenna gain. The equipment has an antenna which is made up of a pair of metal plates located face-to-face, and a short-circuiting member for short-circuiting the metal plates. A circuit board loaded with radio circuitry is interposed between two metal plates with the radio circuitry being connected to the antenna. A capacitor is connected between the metal plates to lower the resonance frequency of the antenna, as needed. A circular cell for powering the equipment is located in a cell receiving portion near the short-circuiting member.

REFERENCES:
patent: 4599680 (1986-07-01), Gibson et al.
patent: 4625212 (1986-11-01), Oda et al.
patent: 4744009 (1988-05-01), Grabbe et al.
patent: 4814776 (1989-03-01), Caci et al.
patent: 4864636 (1989-09-01), Brunius
patent: 4876552 (1989-10-01), Zackman
patent: 4920353 (1990-04-01), Mori et al.
patent: 4955084 (1990-09-01), Umetsu et al.

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