Telecommunications – Transmitter and receiver at same station – With transmitter-receiver switching or interaction prevention
Patent
1997-09-15
2000-08-29
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at same station
With transmitter-receiver switching or interaction prevention
455 83, 455129, H04B 144
Patent
active
06112060&
ABSTRACT:
A communication device (10) for receiving or transmitting radiofrequency (rf) signals has a transceiver (12), signal processing circuitry (14) and a signal switch assembly (16). Assembly (16) has a jack (18), an antenna matching circuit (20) and a bypass circuit (22). Rf signals are provided to transceiver (12) through antenna matching circuit (20) when an antenna is connected to jack (18). However, antenna matching circuit (20) is bypassed so that the rf signals are provided to transceiver (12) through bypass circuit (22) when a connector from a signal cable is connected to jack (18). Bypass circuit (22) is actuated as such when a ground member of such a connector electrically connects a ground contact (26) and one other contact (28) within jack (18). Ground contact (26) and other contact (28) are annularly disposed around a signal contact (24) of jack (18).
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Ghazalli Ruslan
Jusoh Munirah
Lim Han Teong
Eisenzopf Reinhard J.
Fuller Andrew S.
Motorola Inc.
Nguyen Duc
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