Operational transconductance amplifier with DC offset...

Details Operational transconductance amplifier with DC offset... Operational transconductance amplifier with DC offset...

2007-03-20

2007-03-20

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S253000, C330S260000

Reexamination Certificate

active

11019765

ABSTRACT:
Provided is a transconductor capable of eliminating a direct current (DC) offset component of a signal and compensating a mismatch of the signal. The transconductor includes amplifiers of simple circuit structures, and a common mode control DC offset elimination circuit. The transconductor includes a common mode control DC offset elimination circuit unit receiving input/output voltages to stabilize the current supplying and the output DC value, a first amplifier and a second amplifier reducing a mismatch in a transconductor circuit and increasing an output resistance, in order to prevent a signal distortion or a wrong operation of the circuit that is caused by the mismatch signal and unstable DC voltage.

REFERENCES:
patent: 5436594 (1995-07-01), Pace et al.
patent: 5726597 (1998-03-01), Petty et al.
patent: 6064262 (2000-05-01), Wang
patent: 6566951 (2003-05-01), Merrigan et al.
patent: 6636098 (2003-10-01), Kizer
patent: 6657488 (2003-12-01), King et al.
patent: 6750704 (2004-06-01), Connell et al.
patent: 94002967 (1994-04-01), None
patent: 00213240 (1999-05-01), None
patent: 000035417 (2000-06-01), None
DC Offset Canceller in a Direct Conversion Receiver for QPSK Signal Reception, pp. 1314-1318.
A Low Voltage Operational Transconductance Amplifier suing common Mode Feedforward for High Frequency Switched Capacitor Circuits, pp. 643-646.
Design Considerations for Common-Mode Feedback Circuits in Fully-Differential Operational Transconductance Amplifiers with Tuning, pp. 1363-1366.

Affiliated with

Also associated with

Rating

Operational transconductance amplifier with DC offset... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Operational transconductance amplifier with DC offset..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Operational transconductance amplifier with DC offset... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3774054