Blocker performance in a radio receiver

Details Blocker performance in a radio receiver Blocker performance in a radio receiver

2005-10-26

2009-06-09

Tse, Young T. (Department: 2611)

Pulse or digital communications

Receivers

Angle modulation

C375S316000, C455S339000, C455S340000

Reexamination Certificate

active

07545889

ABSTRACT:
Configuring a multiple stage band pass filter of a radio frequency receiver commences by setting a corner of a low pass mixer output filter that receives a down sampled analog information signal. Operation continues with setting a buffer output filter corner of a low pass buffer output filter coupled to an output of low pass mixer output filter via a buffer. Then, operation includes setting the poles and zero of a plurality of band pass filters coupled to the output of the low pass buffer output filter is performed. This operation includes first setting a zero of a respected band pass filter and then setting the plurality of poles of the band pass filter. Finally, operation concludes with setting a combined gain of the combination of the low pass mixer output filter, the low pass buffer output filter, and the plurality of band pass filters.

REFERENCES:
patent: 5793244 (1998-08-01), Ueda
patent: 6631170 (2003-10-01), Gu
patent: 2003/0104797 (2003-06-01), Webster et al.
patent: 2005/0186935 (2005-08-01), Kawama et al.
patent: 2005/0220217 (2005-10-01), Yamawaki et al.
patent: 2005/0253647 (2005-11-01), Hagari
patent: 2006/0044961 (2006-03-01), Jin

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