Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1999-12-07
2000-10-24
Pascal, Robert
Amplifiers
With semiconductor amplifying device
Including differential amplifier
330260, 327103, H03F 345
Patent
active
061373591
ABSTRACT:
The invention is an amplifier configuration which provides signal gain at very low levels of distortion. The inventive amplifier configuration consists of two amplifiers whose outputs are added to give the total amplified signal. A first amplifier functions in the usual way, amplifying a signal from a voltage source and having a controllable feedback gain. A second amplifier is also fed by the voltage source but applies a feedback gain to the total amplified signal rather than to its own output signal. By selecting the feedback gains to be substantially identical, portions of voltage waveforms that have been removed or altered due to clipping or other forms of distortion are restored by the second amplifier. The invention is particularly useful when amplifier gain is low, e.g., at high frequencies. Suitable implementations are in the voltage domain, using operational amplifiers, or in the current domain, using, for example, voltage-controlled current sources.
REFERENCES:
patent: 3526847 (1970-09-01), Campbell
Gorcea Dan
Thomas Robert M.
Choe Henry
Nortel Networks Corporation
Pascal Robert
LandOfFree
Low-distortion high-frequency amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low-distortion high-frequency amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low-distortion high-frequency amplifier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1968328