Diversity reception system in a portable radio apparatus

Details Diversity reception system in a portable radio apparatus Diversity reception system in a portable radio apparatus

1984-04-02

1986-12-30

Bookbinder, Marc E.

Telecommunications

Receiver or analog modulated signal frequency converter

With wave collector

455134, H04B 708

Patent

active

046335196

ABSTRACT:
A portable radio used with this invention has two different types of antenna, such as a monopole antenna and a loop antenna. The diversity reception system continuously selects that one of the antenna which provides the better received signal. Antenna selection is performed such that the received signal level is compared with two or more preset threshold levels, and antennas are switched when and only when the received signal level fails to satisfy certain predetermined conditions.

REFERENCES:
patent: 2266630 (1941-12-01), Forbes
patent: 4255816 (1981-03-01), Grunza et al.
patent: 4332032 (1982-05-01), Daniel
patent: 4403343 (1983-09-01), Hamada
patent: 4450585 (1984-05-01), Bell
patent: 4495653 (1985-01-01), Hamada
patent: 4499606 (1985-02-01), Rambo

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