Miscellaneous active electrical nonlinear devices – circuits – and – External effect – Temperature
Reexamination Certificate
2006-09-19
2006-09-19
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
External effect
Temperature
C327S552000
Reexamination Certificate
active
07109781
ABSTRACT:
A compensation circuit compensates for the variation in the internal resistance of a multi-track inductor over temperature. The compensation circuit includes a dummy inductor that has the same temperature dependent resistance as that of the multi-track inductor that is to be compensated. A first field effect transistor is placed in series with the multi-track inductor that is to be compensated, and a second field effect transistor is placed in series with the dummy inductor, where the gates of the FETs are tied together. A control circuit provides a constant current for the dummy inductor and detects any changes in voltage of the dummy inductor over temperature. The control circuit includes a feedback loop that controls the gate voltage of both first and second FETs so as to compensate for the temperature dependent inductor resistance variations of both the dummy inductor and the multi-track inductor that is to be compensated.
REFERENCES:
patent: 4419660 (1983-12-01), Bergdahl
patent: 4568886 (1986-02-01), English
patent: 4614925 (1986-09-01), Kane
patent: 4789976 (1988-12-01), Fujishima
patent: 4903329 (1990-02-01), Marik et al.
patent: 4818903 (1990-04-01), Kawano
patent: 5031233 (1991-07-01), Ragan
patent: 5239283 (1993-08-01), Wiesgickl
patent: 5428829 (1995-06-01), Osburn et al.
patent: 5572161 (1996-11-01), Myers
patent: 5715012 (1998-02-01), Patel et al.
patent: 5737035 (1998-04-01), Rotzoll
patent: 5828589 (1998-10-01), Degenhardt
patent: 5852866 (1998-12-01), Kuettner et al.
patent: 5914630 (1999-06-01), Peterson
patent: 5996063 (1999-11-01), Gaertner et al.
patent: 6008713 (1999-12-01), Masserbakht
patent: 6049258 (2000-04-01), Fawal et al.
patent: 6107870 (2000-08-01), Kawano
patent: 6504420 (2003-01-01), Vorenkamp et al.
patent: 6525609 (2003-02-01), Behzad
patent: 37 23 778 (1988-01-01), None
patent: 195 06 324 (1995-10-01), None
patent: 0 393 717 (1990-10-01), None
patent: 0 431 887 (1991-06-01), None
patent: 2120478 (1983-11-01), None
patent: 358114511 (1983-07-01), None
patent: 406334507 (1994-12-01), None
patent: WO 97/09786 (1997-03-01), None
Nguyen, N.M. and Meyer, R.G., “Si IC-Compatible Inductors and LC Passive Filters,”IEEE Journal of Solid-State Circuits,US, New York, No. 4, Aug. 25, 1990, pp. 1028-1031.
Poole, S., Surace, G., Singh, B., Dyer, N., “A CMOS Subscriber Line Audio Processing Circuit Including Adaptive Balance,”IEEE International Symposium on Circuits and Systems,Finland, Espoo, vol. 2 of 3, Jun. 7-9, 1988, pp. 1931-1934.
Bult Klaas
Carr Frank
Vorenkamp Pieter
Broadcom Corporation
Le Dinh T.
Sterne Kessler Goldstein & Fox PLLC
LandOfFree
Temperature compensation for internal inductor resistance does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Temperature compensation for internal inductor resistance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature compensation for internal inductor resistance will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3594996