Repeater feedback circuit

Details Repeater feedback circuit Repeater feedback circuit

1978-12-29

1981-03-31

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including current mirror amplifier

330290, 330295, H03F 368

Patent

active

042596424

ABSTRACT:
A bilateral transmission line repeater is disclosed in which opposite directions of transmission are separated into different frequency bands. The amplifiers for each direction of transmission include an automatic gain control circuit for controlling the gain of the amplifier. Gain control for the inward bound amplifier (toward a central location such as a telephone central office) is under the control of an automatic gain control signal derived from the outward bound signal as well as from the inward bound signal. Feedback around the gain control amplifier is accomplished using a current mirror circuit to avoid loading the amplifier output.

REFERENCES:
patent: 3233125 (1966-02-01), Buie
patent: 3717821 (1973-02-01), Amemiya et al.
patent: 3822387 (1974-07-01), Mulder
patent: 3921091 (1975-11-01), Van Kessel et al.
patent: 3956645 (1976-05-01), Boer
patent: 4030042 (1977-06-01), Limberg
patent: 4105943 (1978-08-01), Krause
patent: 4168528 (1979-09-01), Comer
patent: 4172999 (1979-10-01), Leidich
Bilotti, "Noise Characteristics of Current Mirror Sinks/Sources", IEEE Journal of Solid-State Circuits, vol. 10, No. 6, Dec. 1975, pp. 516-524.

Affiliated with

Also associated with

Rating

Repeater feedback circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2246570