Amplifiers – Signal feedback – Combined with control of bias voltage of signal amplifier
Patent
1975-06-12
1977-05-10
Rolinec, Rudolph V.
Amplifiers
Signal feedback
Combined with control of bias voltage of signal amplifier
330 28, 330 85, 330 86, 330109, 330145, H03G 330
Patent
active
040231127
ABSTRACT:
A broad band amplifier with negative feedback and controllable amplification factor for use in a carrier frequency system is described. The amplifier is preferably used as a control amplifier in the receiver of a basic group, for example, a basic 60-group of the system wherein the amplification of the amplifier is then controlled by a pilot receiver common for all the 60-groups. The amplifier includes an amplifier stage having constant amplification and which receives the pilot signal. A negative feedback path is connected via a first impedance converter from the output to the input of the amplifier stage. This path includes a capacitive voltage divider together with a second impedance converter and an RC-link. The capacitor values in the voltage divider are varied in dependence on a regulating voltage from the pilot receiver of the system, whereby the degree of negative feedback and thus the amplification of the amplifier can be controlled.
REFERENCES:
patent: 2631201 (1953-03-01), Morrison
patent: 2999169 (1961-09-01), Feiner
Duncker Bodo Kurt Adolf
Eberstein Bo Soren Tage
Dahl Lawrence J.
Rolinec Rudolph V.
Telefonaktiebolaget L M Ericsson
LandOfFree
Broad band amplifier having negative feedback and a controllable does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Broad band amplifier having negative feedback and a controllable, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Broad band amplifier having negative feedback and a controllable will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1986088