Patent ID: 6014546
Filing Date: 2000-01-11
Classification: H03D,H03L,H04B,H04W

Abstract:
A method for receiving a RF signal contained in a RF bandwidth from a wireless local loop base station and transmitting said RF signal over a low bandwidth medium having a transmission bandwidth below said RF bandwidth, said method comprising:a) intercepting said RF signal from said wireless local loop base station;b) providing said system with a global reference tone of high stability at a frequency within said transmission bandwidth of said low bandwidth medium;c) generating a first RF reference tone of high stability by using a first adjustment signal derived from said global reference tone to control the output of a first local oscillator, such that said first local oscillator generates said first RF reference tone;d) mixing said first RF reference tone with said RF signal to produce an IF signal within said transmission bandwidth;e) feeding said IF signal through said low bandwidth medium;f) generating a second RF reference tone of high stability by using a second adjustment signal derived from said global reference tone to control the output of a second local oscillator, such that said second local oscillator generates said second RF reference tone; andg) mixing said second RF reference tone with said IF signal fed through said low bandwidth medium to recover said RF signal.