Portable radio

Details Portable radio Portable radio

1986-08-19

1989-05-09

Griffin, Robert L.

Telecommunications

Transmitter and receiver at same station

With a common signal processing stage

455133, 455277, H04B 106

Patent

active

048295914

ABSTRACT:
A portable transceiver has a narrow band square microstrip antenna connected to a first radio receiver, a wideband sleeve or whip antenna connected to an associated duplexer, and a second radio receiver and a transmitter both connected to the wideband antenna via the duplexer. The square microstrip antenna if formed of a conductive emission plate and a conductive ground plate joined by a conductive connector plate. A housing enclosing the transceiver has an earphone and microphone set in its front side, the microstrip antenna under its back side, and the wideband sleeve or whip antenna mounted upright on its top side.

REFERENCES:
patent: 3277374 (1966-10-01), Kobayashi
patent: 3887872 (1975-06-01), Sharpe
patent: 4035728 (1977-07-01), Ishikawa et al.
patent: 4060766 (1977-11-01), Kazuo
patent: 4178548 (1979-12-01), Thompson
patent: 4524461 (1985-06-01), Kostanty et al.
patent: 4538153 (1985-08-01), Taga
patent: 4543581 (1985-09-01), Nemet
patent: 4545071 (1985-10-01), Freeburg
patent: 4633519 (1986-12-01), Gotoh et al.
patent: 4641366 (1987-02-01), Yokoyama et al.
patent: 4726070 (1988-02-01), Buzzi

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