Patent ID: 6496079
Filing Date: 2002-12-17
Classification: H04B

Abstract:
A transport to microwave radio frequency adapter that accepts an input telecommunications transport signal on an input port and converts information in such signal to a desired microwave Radio Frequency (RF) carrier, the input transport signal carrying information at an input bit rate, the apparatus comprising:a phase encoder, coupled to receive the transport signal, the phase encoder implementing a Phase Shift Keyed (PSK) encoding such that at least first phase is selected to indicate a first logical value for an input data bit in the transport signal and a second phase is selected to indicate a second logical value for an input data bit in the transport signal, the deviation between the two phases selected to be equal to a predetermined value; a local reference oscillator, connected to provide a first microwave carrier; a frequency multiplier, connected to receive the output of the local reference oscillator and to multiply the output thereof to a desired microwave RF carrier frequency; and a phase modulator, connected to receive the desired microwave RF carrier and the phase encoder output, to provide a direct phase modulated microwave RF carrier.