Front-end module for multi-band and multi-mode wireless...

Details Front-end module for multi-band and multi-mode wireless... Front-end module for multi-band and multi-mode wireless...

2006-10-24

2006-10-24

Vo, Nguyen T. (Department: 2618)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S101000, C455S188100

Reexamination Certificate

active

07127269

ABSTRACT:
A front-end module for multi-band and multi-mode wireless network system is disclosed. The front-end module includes a diversity switch, two channel-separating devices, a plurality of band pass filters, a plurality of baluns, and a plurality of low pass filters. The number of the band pass filters, the number of the low pass filters, and the number of the baluns are the same as the number of the channels for carrying a radio frequency signal. In addition, all the band pass filters are connected to one channel-separating device while all the low pass filters are connected to the other one, and the baluns are one-on-one connected to the band pass filters.

REFERENCES:
patent: 5794159 (1998-08-01), Portin
patent: 6728517 (2004-04-01), Sugar et al.
patent: 6990357 (2006-01-01), Ella et al.
patent: 2004/0232982 (2004-11-01), Ichitsubo et al.
patent: 2005/0205986 (2005-09-01), Ichitsubo et al.
patent: 2006/0094393 (2006-05-01), Okuyama et al.

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