Telecommunications – Transmitter and receiver at same station – With a common signal processing stage
Patent
1990-08-13
1993-11-09
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at same station
With a common signal processing stage
455127, 4552771, H04B 138
Patent
active
052611213
ABSTRACT:
In order to enable a diversity reception in a portable radiotelephone without detrimentally increasing the size and weight thereof, an adaptor to which diversity antennas are coupled and into which the radiotelephone is inserted in an in-car mode, is provided with a diversity switch and a diversity switch controller. The portable radiotelephone is arranged to switch over from its own antenna to the diversity antennas upon insertion into the adaptor. The portable radiotelephone is further provided with an arrangement for exhibiting a correct receive signal strength irrespective of the fact it is set in the adaptor or used in a portable mode.
REFERENCES:
patent: 4641366 (1987-07-01), Yokoyama
patent: 4673861 (1987-06-01), Dubovsky et al.
patent: 4829591 (1989-05-01), Hashimoto et al.
patent: 4914714 (1990-04-01), Tamura
patent: 4939788 (1990-07-01), Hasegawa
patent: 4962523 (1990-10-01), Tanaka
Eisenzopf Reinhard J.
NEC Corporation
Urban Edward
LandOfFree
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