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1. (WO2013119703) NOTCH FILTER INTEGRATED IN LNA OF A COEXISTING RADIO

Pub. No.:    WO/2013/119703    International Application No.:    PCT/US2013/024982
Publication Date: Fri Aug 16 01:59:59 CEST 2013 International Filing Date: Thu Feb 07 00:59:59 CET 2013
IPC: H04B 1/10
H04B 1/52
Applicants: QUALCOMM INCORPORATED
Inventors: DOGAN, Hakan
NATHAWAD, Lalitkumar, Y.
Title: NOTCH FILTER INTEGRATED IN LNA OF A COEXISTING RADIO
Abstract:
A mechanism is disclosed for improving the performance of a coexisting radio by integrating a notch filter into an LNA of a first coexisting radio of two or more coexisting radios. The notch filter may be a differential circuit or a single-ended circuit. The single-ended circuit filters common mode signals. In one embodiment, the first coexisting radio has a carrier frequency that is in 2.4 GHz ISM frequency band and one of the other two or more coexisting radios has a carrier frequency that is in 1.9 GHz cellular band.