Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2007-11-13
2007-11-13
Taylor, Barry (Department: 2617)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S323000
Reexamination Certificate
active
11503179
ABSTRACT:
A radio receiver for receiving signals of at least two different communication standards, including a narrow band signal having a narrow bandwidth and a wide band signal having a wide bandwidth, is provided. The receiver comprises a shared radio frequency (RF) front-end that receives the wide band signal during at least one period of operation, downconverts, in a single downconversion, the wide band signal directly to baseband, receives the narrow band signal during at least another period of operation, and downconverts, in a single downconversion, the narrow band signal to a low intermediate frequency (Low-IF). The receiver further comprises a baseband processing chain that operates on the downconverted wide band signal to extract desired data and a Low-IF processing chain that operates on the downconverted narrow band signal to extract desired data.
REFERENCES:
patent: 6029052 (2000-02-01), Isberg et al.
patent: 6931241 (2005-08-01), Khlat et al.
patent: 2003/0022652 (2003-01-01), Stepp et al.
patent: 2003/0087613 (2003-05-01), Bellaouar et al.
patent: 2003/0100286 (2003-05-01), Severson et al.
McDermott Will & Emery LLP
Taylor Barry
LandOfFree
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