Image trap filter

Details Image trap filter Image trap filter

2005-02-01

2005-02-01

Trost, William (Department: 2684)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S302000, C455S307000, C455S501000, C348S729000, C348S736000

Reexamination Certificate

active

06850747

ABSTRACT:
An image trap filter disposed between the low noise amplifier and the mixer of a radio frequency receiver that overcomes the adverse effect of process variations on image signal rejection for both a single-band radio frequency receiver and a multi-band radio frequency receiver by setting the image trap filter response at the center of the band of interest at production test. The image signal problem is presented at the input of the radio frequency receiver and the image trap filter is adjusted for the desired frequency response.

REFERENCES:
patent: 4276573 (1981-06-01), Halpern et al.
patent: 4479249 (1984-10-01), Geesen et al.
patent: 4479255 (1984-10-01), Geesen et al.
patent: 4484356 (1984-11-01), Geesen et al.
patent: 4500854 (1985-02-01), Meyer
patent: 4831661 (1989-05-01), Suzuki
patent: 4835608 (1989-05-01), Lachiw et al.
patent: 5428828 (1995-06-01), Pugel et al.
patent: 5539359 (1996-07-01), Goma
patent: 5697092 (1997-12-01), Mourant et al.
patent: 5742897 (1998-04-01), Plowdrey et al.
patent: 5886589 (1999-03-01), Mourant
patent: 5963842 (1999-10-01), Kinugawa
patent: 6021056 (2000-02-01), Forbes et al.
patent: 6137376 (2000-10-01), Imbornone et al.
patent: 6222399 (2001-04-01), Imfornone et al.
patent: 6313712 (2001-11-01), Mourant et al.
patent: 6342813 (2002-01-01), Imbornone et al.
patent: 6380821 (2002-04-01), Imbornone et al.
patent: 6396362 (2002-05-01), Mourant et al.
patent: 6432812 (2002-08-01), May
patent: 6529719 (2003-03-01), Imbornone et al.
patent: 6687494 (2004-02-01), Mourant
patent: 20010050598 (2001-12-01), Mourant et al.
patent: 0608815 (1994-08-01), None

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