Multiband multimode communication engines

Details Multiband multimode communication engines Multiband multimode communication engines

2007-09-11

2007-09-11

West, Lewis (Department: 2618)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S552100, C455S073000

Reexamination Certificate

active

10688807

ABSTRACT:
A transceiver front-end having a plurality of signal paths operatively connected to at least two electrically separated antennas for transmitting and receiving communication signals in a plurality of frequency bands in GSM and W-CDMA modes. If the frequency band of one signal path is partially overlapping with the frequency band of another signal path, these two signal paths are connected to two different antennas. As such, some of the switching components and matching elements in the transceiver front-end can be eliminated. As a result, the reception loss can be reduced.

REFERENCES:
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patent: 6381471 (2002-04-01), Dvorkin
patent: 6751470 (2004-06-01), Ella et al.
patent: 6912406 (2005-06-01), Lahlum et al.
patent: 2003/0114188 (2003-06-01), Rousu
patent: 2004/0092285 (2004-05-01), Kodim
patent: 2004/0162107 (2004-08-01), Klemetti et al.
patent: 2004/0204035 (2004-10-01), Raghuram et al.
patent: 2005/0085001 (2005-04-01), Martin et al.

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