Mimo and diversity front-end arrangements for multiband...

Details Mimo and diversity front-end arrangements for multiband... Mimo and diversity front-end arrangements for multiband...

2006-12-26

2006-12-26

Anderson, Matthew D. (Department: 2618)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S168100, C455S272000, C455S303000

Reexamination Certificate

active

07155252

ABSTRACT:
A receive front-end module having one or more 2 GHz Rx paths and one or more W-CDMA Rx paths for use in a portable communication device, such as a mobile phone or a communicator device. The module comprises at least two feed points operatively connected to two electrically separate antennas for receiving communication signals. The module also comprises filters for filtering the communication signals in corresponding frequency band, and means for providing cross-band isolation. The cross-band isolation is achieved by using linear amplifiers in different signal paths, for example. Advantageously, the module comprising three signal paths so that one or more modules can be used together to achieve MIMO/diversity functionality.

REFERENCES:
patent: 5507010 (1996-04-01), Ahonen
patent: 6188718 (2001-02-01), Gitlin et al.
patent: 6381471 (2002-04-01), Dvorkin
patent: 2002/0045427 (2002-04-01), Lahti et al.
patent: 2003/0128081 (2003-07-01), Ella et al.

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