Multiplex communications – Duplex – Frequency division
Patent
1996-04-02
1998-03-03
Olms, Douglas W.
Multiplex communications
Duplex
Frequency division
370491, 330 52, H03F 362
Patent
active
057243441
ABSTRACT:
A bidirectional amplifier that compensates for signal attenuation in a transmission medium uses a first diplex filter for directing a first signal including a pilot signal and propagating in a first direction along a first section of the transmission medium onto a first path of the amplifier. A second diplex filter directs a second signal in a different frequency band than the first signal that is propagating in a second direction opposite to the first signal along a second section of the transmission medium onto a second path of the amplifier. The first and second paths interconnect separate sections of the first and second diplex filters. A compensating device is disposed in the first and second paths wherein a pilot detection circuit detects the pilot signal in the first signal and generates therefrom separate control signals to first and second Bode Slope Equalizers in the first and second paths, respectively. The first and second Bode Slope equalizers separately change the equalization of each of the first and second signals across the first and second frequency bands, respectively, propagating in the respective first and second paths to separately change the amplification of the first and second signals, respectively, in order to compensate for signal attenuation changes occurring in the first section of the transmission medium.
REFERENCES:
patent: 1438219 (1922-12-01), Clark
patent: 1507160 (1924-09-01), Crisson
patent: 1615911 (1927-02-01), Nyquist
patent: 3483334 (1969-12-01), Hermes
patent: 3548120 (1970-12-01), Tarassoff
patent: 4208640 (1980-06-01), van der Meijis
patent: 4535443 (1985-08-01), Korevaar
patent: 4580260 (1986-04-01), Blackburn
patent: 4583220 (1986-04-01), Blackburn
patent: 4835494 (1989-05-01), Preschutti
patent: 4947386 (1990-08-01), Preschutti
patent: 4969162 (1990-11-01), Karr
S. Seiya & T. Tanaka, abstract of Japanese patent application JP 63016743, filed Jan. 27, 1988, Aug. 2, 1989.
Olms Douglas W.
Ostroff Irwin
Pfeifle Erwin
Phillips Matthew C.
LandOfFree
Amplifier using a single forward pilot signal to control forward does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Amplifier using a single forward pilot signal to control forward, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Amplifier using a single forward pilot signal to control forward will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2255813