Telecommunications – Receiver or analog modulated signal frequency converter – With particular receiver circuit
Reexamination Certificate
2006-04-18
2006-04-18
Vo, Nguyen T. (Department: 2685)
Telecommunications
Receiver or analog modulated signal frequency converter
With particular receiver circuit
C455S307000, C330S107000
Reexamination Certificate
active
07031690
ABSTRACT:
A complex low-pass filter that reduces the influence of component mismatch. The filter includes a first filter section for effecting a first single pole transfer function and a second filter section for effecting a second single pole transfer function, where the first and the second single pole transfer functions collectively define a conjugate pair of poles. In higher order low-pass filters, an optimal cascade order follows a shoestring pattern.
REFERENCES:
patent: 3605032 (1971-09-01), Kerwin
patent: 5105163 (1992-04-01), Voorman
patent: 6704560 (2004-03-01), Balteanu et al.
patent: 2002/0068541 (2002-06-01), Helio et al.
patent: 2003/0097601 (2003-05-01), Glas et al.
patent: 2004/0043748 (2004-03-01), Yeo et al.
patent: 2004/0166803 (2004-08-01), Moloudi et al.
W. M. Snelgrove and A. S. Sedra, “State-Space Synthesis of Complex Analog Filters,” inProc. of the European Conference on Circuit Theory and Design, 1981, pp. 420-424.
A. A. Abidi, “Direct-Conversion Radio Transceivers for Digital Communications,”IEEE Journal of Solid State Circuits, vol. 30, No. 12, pp. 1399-1410 (Dec. 1995).
B. Razavi, “Design Considerations for Direct-Conversion Receivers,”IEEE Transactions on Circuits and Systems—II: Analog and Digital Signal Processing, vol. 44, No. 6, pp. 428-435 (Jun. 1997).
Banu Mihai
Kiss Peter
Prodanov Vladimir
Agere Systems Inc.
Jackson Blane J.
Vo Nguyen T.
LandOfFree
Polyphase filter with low-pass response does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polyphase filter with low-pass response, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyphase filter with low-pass response will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3563167