Distribution of radio-frequency signals through low bandwidth in

Details Distribution of radio-frequency signals through low bandwidth in Distribution of radio-frequency signals through low bandwidth in

1998-06-09

2000-12-05

Hunter, Daniel S.

Telecommunications

Carrier wave repeater or relay system

Portable or mobile repeater

455 31, 455209, H04B 715

Patent

active

06157810&

ABSTRACT:
A system and method for transmitting a radio frequency (RF) signal in a RF bandwidth over a low bandwidth medium, e.g., in-building cabling, which has a transmission bandwidth below the RF bandwidth. The system has a unit for intercepting the RF signal and a global reference oscillator for distributing a global reference tone of high stability to the entire system. Local oscillators are controlled by adjustment signals derived from this global reference tone to deliver RF reference tones of high stability required for mixing the RF signal to obtain an intermediate frequency (IF) signal which is fed through the low bandwidth medium. The global reference tone is preferably delivered through the same low bandwidth medium to desired locations, such as remote coverage sites in a network for cellular communications, cordless telephony, local RF communications, interactive multi-media video, high bit-rate local communications. A modified RF signal is generated at the desired location by mixing the IF signal and a local reference signal controlled by the global reference signal.

REFERENCES:
patent: 4972346 (1990-11-01), Kawano et al.
patent: 5765099 (1998-06-01), Georges et al.
patent: 5774789 (1998-06-01), Van der Kaay et al.
patent: 5983070 (1999-11-01), Georges et al.

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