Integrated low power channel select filter having high...

Details Integrated low power channel select filter having high... Integrated low power channel select filter having high...

2006-05-23

2006-05-23

Mai, Tan V. (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical analog calculating computer

Particular function performed

C708S005000

Reexamination Certificate

active

07051063

ABSTRACT:
A channel select filter circuit is disclosed using a current-mode transconductance-capacitor (gm-C) architecture, which is tuned by digitally controlled capacitor arrays. The main filter includes at least one transconductor-capacitor (gm-C) filter and a transresistance amplifier. A replica transconductor-capacitor (gm-C) filter and a phase detector are used to establish any phase shift in an input signal, and a state machine adjusts capacitor arrays in the the replica transconductor-capacitor (gm-C) filter and the at least one transconductor-capacitor (gm-C) filter in order to set a cut-off frequency of the channel select filter.

REFERENCES:
patent: 5072298 (1991-12-01), Sumiyoshi
patent: 5245565 (1993-09-01), Petersen et al.
patent: 5325317 (1994-06-01), Petersen et al.
patent: 5463349 (1995-10-01), Petersen et al.
patent: 6097244 (2000-08-01), Chen
patent: 6417737 (2002-07-01), Moloudi et al.
patent: 6738601 (2004-05-01), Rofougaran et al.
patent: 2002/0011896 (2002-01-01), Yokoyama et al.
patent: 2003/0067359 (2003-04-01), Darabi et al.
Gopinathan, V. (1990) “Design Considerations for Integrated Continuous-Time Video Filters,”IEEE Journal of Solid State Circuits, pp. 1177-1180.
Changsik Yoo et al. (1997) “A 15 MHz, 2.6 mW, Sixth-Order Bandpass Gm-C Filter in CMOS,”Proceedings of the 40thMidwest Symposium on Circuits and Systems, pp. 316-319.
Baschirotto, A. et al. (2000) “High-Frequency CMOS Low-Power Single-Branch Continuous-Time Filters,”Proc. Circuits and Systems, Geneva.
Gopinathan, V. et al. (1990) “Design Considerations for High-Frequency Continuous-Time Filters and Implementation of an Antialiasing Filter for Digital Video,”IEEE Journal of Solid-State Circuits, 25(6):1368-1378.
Durham, A. et al. (1992) “High-Linearity Continuous-Time Filter in 5-V VLSI CMOS,”IEEE Journal of Solid-State Circuits, 27(9):1270-1276.

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