Telecommunications – Interference signal transmission
Patent
1990-01-18
1993-02-16
Eisenzopf, Reinhard J.
Telecommunications
Interference signal transmission
455 51, 455 14, 455 22, 455 551, H04H 100, H04B 714
Patent
active
051878038
ABSTRACT:
A regenerative RF bi-directional communications system is provided for establishing RF coverage within a RF block tunnel area. The system uses a plurality of cascaded amplifier stages for periodically regenerating signals which are transmitted and received along a series of radiating cable length which link base station transceivers to hand-held or like mobile communication units. An intermediate frequency distribution system is used so that the required level of amplification is achieved through the several cascaded amplifier stages at the level of low-power IF signals generated from the original RF signals in conjunction with the appropriate oscillator and pilot signals. The IF distribution system restricts the cascading effect occurring due to the plurality of cascaded amplifier stages on the relatively low-power IF signals, thereby producing a negligible amount of intermodulation.
REFERENCES:
patent: 3750020 (1973-07-01), Baba et al.
patent: 3886454 (1975-05-01), Oakley
patent: 4701935 (1987-10-01), Namiki
patent: 4972346 (1990-11-01), Kawano
patent: 4972505 (1990-11-01), Isberg
David Martin, The Use of In-Line Repeaters in Leaky Feeder Radio Systems for Coal Mines, 1978, 257.
Kumar Surinder
Morgan Michael A.
Sohner Harold K.
Andrew Corporation
Belzer Christine K.
Eisenzopf Reinhard J.
LandOfFree
Regenerative RF bi-directional amplifier system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Regenerative RF bi-directional amplifier system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Regenerative RF bi-directional amplifier system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2154354