Balanced amplifier and filter using the same

Details Balanced amplifier and filter using the same Balanced amplifier and filter using the same

2005-07-19

2005-07-19

Choe, Henry (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S069000

Reexamination Certificate

active

06919768

ABSTRACT:
A balanced amplifier comprising a pair of voltage-to-current converters including a first input terminal, a second input terminal, a first output terminal and a second output terminal to convert an input voltage applied to the first input terminal into an output current output from each of the first output terminal and the second output terminal, the second input terminal and the second output terminal of one of the converters being connected to the second input terminal and the second output terminal of the other of the converters to cancel common-mode components each other and extract differential-mode components.

REFERENCES:
patent: 5345190 (1994-09-01), Kaylor
patent: 5491447 (1996-02-01), Goetschel et al.
patent: 5696457 (1997-12-01), Rezzi et al.
patent: 5963088 (1999-10-01), Czarnul et al.
patent: 5990737 (1999-11-01), Czarnul et al.
patent: 6329849 (2001-12-01), Czarnul et al.
patent: 10-51247 (1998-02-01), None
patent: 11-17466 (1999-01-01), None
patent: 2000-148242 (2000-05-01), None
Zdzislaw Czarnul, et al., “Design of Ully Balanced Analog Systems Based on Ordinary and/or Modified Single-Ended Opamps”, IEICE Trans. Fundamentals, vol. E82-A, No. 2 Feb. 1999, pp. 256-270.
Tetsuro Itakura et al., “A 2-V pp Linear Input-Range Fully Balanced CMOS Transconductor and its Application to a 2.5 V 2.5 MHz, Gm-C LPF”, IEICE Trans. Fundamentals vol. E83-A, No. 11, Nov. 2000, pp. 2295-2302.

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