Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Unwanted signal suppression
Patent
1998-11-18
2000-10-17
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
Unwanted signal suppression
327341, 327561, H03B 100
Patent
active
06133782&
ABSTRACT:
To achieve a constant control range in an integrator-filter circuit for filtering a push-pull signal, having at least two integrator elements (1) this second control current being having resistors (11, 12) arranged at its inputs, a subsequent current multiplier (13) having two signal inputs (14, 15) and preceding a push-pull amplifier (18) with an inverting input (20) and a non-inverting input (19), having inverting output (21) fed back to the non-inverting input (19) and a non-inverting output (23) fed back to the inverting input (20) via capacitances (22, 24), the current multiplier (13) receiving, at two control inputs (37, 38), a first and a second control current (I.sub.1, I.sub.2) for adjusting the integration time constant of the integrator element (1) is adjustable and from which the second control current (I.sub.2) flows in substantially two halves through the signal inputs (14, 15) of the current multiplier (13), an associated third control current (I.sub.3) is generated which, in dependence upon a second control voltage (U.sub.2) is generated, at whose variation the third control current (I.sub.3) varies proportionally to the second control current (I.sub.2). An associated compensation circuit (2) is provided for each integrator element (1).
REFERENCES:
patent: 5691720 (1997-11-01), Wang et al.
patent: 5734294 (1998-03-01), Bezzam et al.
patent: 5856757 (1999-01-01), Eschauzier
Philips Semiconductors-IC TDA 9715H/A Y/C Data Sheet, One chip-orocessor, Product specification, Oct. 21, 1996.
Gehrt Holger
Kattner Axel
Biren Steven R.
Callahan Timothy P.
Nguyen Minh
U.S. Philips Corporation
LandOfFree
Integrator-filter circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Integrator-filter circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrator-filter circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-473003