Removing harmonic and co-existence interference in radio...

Details Removing harmonic and co-existence interference in radio... Removing harmonic and co-existence interference in radio...

2011-04-19

2011-04-19

Tran, Pablo N (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

C455S191100, C455S178100, C455S187100, C455S180200, C348S725000

Reexamination Certificate

active

07929932

ABSTRACT:
A wireless device includes a two-stage filter that separates UHF and VHF transmission bands in such a way as to maximize cross channel isolation, so preventing cross channel signal contamination and additionally protecting all signals from host coexistence blocking transmissions and harmonics of the wanted signals without the requirement for additional or selectable filter arrangements.

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patent: 6522870 (2003-02-01), Tinaphong et al.
patent: 7519339 (2009-04-01), Shah
patent: 7538621 (2009-05-01), Birleson et al.
patent: 2004/0205821 (2004-10-01), Yamada et al.
patent: 2006/0040628 (2006-02-01), Porret et al.
patent: 2008/0198269 (2008-08-01), Gomez
patent: 2010/0156562 (2010-06-01), Kim
patent: 2010/0156575 (2010-06-01), Shah et al.
patent: 2010/0167673 (2010-07-01), Vavelidis et al.

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