Amplifier system with current-mode servo feedback

Details Amplifier system with current-mode servo feedback Amplifier system with current-mode servo feedback

2007-08-07

2007-08-07

Choe, Henry (Department: 2817)

Amplifiers

Sum and difference amplifiers

C330S085000

Reexamination Certificate

active

11006350

ABSTRACT:
A system and method for compensating an amplifier apparatus for low frequency and/or DC components of an externally applied input signal as well as for any voltage offsets contributed by the amplifier circuitry. Band-limited servo feedback is applied to predetermined nodes in the forward gain path to null out unwanted signal components, leaving a residual signal that, when amplified, will be centered around ground, so that the full dynamic range of the amplifier system may be utilized. Consequently, the signal-to-noise ratio available at the output of the amplifier system will be maximized. The servo compensation may either operate in continuous time, or it may be held constant once a suitable level of compensation has been established, or it may be adjusted from time to time to accommodate slow variations of the average DC component of the input signal.

REFERENCES:
patent: 2354877 (1944-08-01), Peters
patent: 2662211 (1953-12-01), Marko et al.
patent: 2853676 (1958-09-01), Ellis
patent: 3621359 (1971-11-01), Schnegg
patent: 3626270 (1971-12-01), Burkett et al.
patent: 3808487 (1974-04-01), Feuillade
patent: 3873911 (1975-03-01), Champlin
patent: 3909708 (1975-09-01), Champlin
patent: 3984762 (1976-10-01), Dowgiallo, Jr.
patent: 3997834 (1976-12-01), Winter et al.
patent: 4035718 (1977-07-01), Chandler
patent: 4053824 (1977-10-01), Dupuis et al.
patent: 4074204 (1978-02-01), Broburg et al.
patent: 4080560 (1978-03-01), Abert
patent: 4112343 (1978-09-01), Douglas
patent: 4181885 (1980-01-01), Gosser et al.
patent: 4204162 (1980-05-01), Froidevaux
patent: 4259639 (1981-03-01), Renirie
patent: 4295097 (1981-10-01), Thompson et al.
patent: 4305039 (1981-12-01), Steuernagel et al.
patent: 4321541 (1982-03-01), Nishizuka
patent: 4360779 (1982-11-01), Peled et al.
patent: 4361809 (1982-11-01), Bil et al.
patent: 4376485 (1983-03-01), Shah
patent: 4388618 (1983-06-01), Finger
patent: 4413221 (1983-11-01), Benjamin et al.
patent: 4433294 (1984-02-01), Windebank
patent: 4433295 (1984-02-01), Zaugg
patent: 4453129 (1984-06-01), Lissalde et al.
patent: 4491802 (1985-01-01), Uchida et al.
patent: 4540951 (1985-09-01), Ozawa et al.
patent: 4659994 (1987-04-01), Poljak
patent: 4697134 (1987-09-01), Burkum et al.
patent: 4707795 (1987-11-01), Alber et al.
patent: 4719428 (1988-01-01), Liebermann
patent: 4728877 (1988-03-01), Adamson
patent: 4743855 (1988-05-01), Randin et al.
patent: 4816768 (1989-03-01), Champlin
patent: 4825170 (1989-04-01), Champlin
patent: 4829225 (1989-05-01), Podrazhansky et al.
patent: 4849700 (1989-07-01), Morioka et al.
patent: 4876513 (1989-10-01), Brilmyer et al.
patent: 4881038 (1989-11-01), Champlin
patent: 4885528 (1989-12-01), Tanaka et al.
patent: 4912416 (1990-03-01), Champlin
patent: 4931367 (1990-06-01), Brecht et al.
patent: 4947124 (1990-08-01), Hauser
patent: 4952861 (1990-08-01), Horn
patent: 4958127 (1990-09-01), Williams et al.
patent: 4968942 (1990-11-01), Palanisamy
patent: 5032825 (1991-07-01), Kuznicki
patent: 5040126 (1991-08-01), Allington
patent: 5047971 (1991-09-01), Horwitz
patent: 5061898 (1991-10-01), Oram et al.
patent: 5107191 (1992-04-01), Lowndes et al.
patent: 5140269 (1992-08-01), Champlin
patent: 5166623 (1992-11-01), Ganio
patent: 5179340 (1993-01-01), Rogers
patent: 5191291 (1993-03-01), Taylor
patent: 5214385 (1993-05-01), Gabriel et al.
patent: 5307000 (1994-04-01), Podrazhansky et al.
patent: 5315253 (1994-05-01), Alexandres et al.
patent: 5325041 (1994-06-01), Briggs
patent: 5369364 (1994-11-01), Renirie et al.
patent: 5394089 (1995-02-01), Clegg
patent: 5404106 (1995-04-01), Matsuda
patent: 5432452 (1995-07-01), Fiorina et al.
patent: 5451880 (1995-09-01), Yamagishi et al.
patent: 5457377 (1995-10-01), Jonsson
patent: 5572136 (1996-11-01), Champlin
patent: 5574355 (1996-11-01), McShane et al.
patent: 5619417 (1997-04-01), Kendall
patent: 5757192 (1998-05-01), McShane et al.
patent: 5771178 (1998-06-01), Stemporzewski et al.
patent: 6043631 (2000-03-01), Tsenter
patent: 6052027 (2000-04-01), Candy
patent: 6141169 (2000-10-01), Pietruszynski et al.
patent: 6160455 (2000-12-01), French et al.
patent: 6262619 (2001-07-01), McGreer et al.
patent: 6262627 (2001-07-01), Ghiozzi et al.
patent: 6291962 (2001-09-01), Ogura et al.
patent: 6411098 (2002-06-01), Laletin
patent: 6445195 (2002-09-01), Ward
patent: 6462615 (2002-10-01), Tanghe
patent: 6465993 (2002-10-01), Clarkin et al.
patent: 6584196 (2003-06-01), Sacca et al.
patent: 6590447 (2003-07-01), Willis
patent: 6621279 (2003-09-01), Ward
patent: 6636107 (2003-10-01), Pelly
patent: 6646508 (2003-11-01), Barbetta
patent: 6674294 (2004-01-01), Ward
patent: RE38454 (2004-03-01), Walters et al.
patent: 6700453 (2004-03-01), Heiskala et al.
patent: 6700522 (2004-03-01), Ivanov et al.
patent: 6713462 (2004-03-01), Metcalf, III et al.
patent: 6717461 (2004-04-01), Krishnapura et al.
patent: WO 97/36182 (1997-10-01), None

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