Frequency-modulated transceiver having a third mixer for generating an outermediate-frequency local oscillator signal from modulated output signal of a high frequency oscillator

摘要

A frequency-modulated transceiver wherein the transmitter includes a frequency-modulated high frequency oscillator and the receiver includes coupled to a cascade, a high frequency mixer whose local oscillator signal is a modulated output signal from the high frequency oscillator, and an intermediate frequency mixer having an intermediate frequency local oscillator signal containing transmission modulation. A third mixer of the transceiver provides the intermediate frequency local oscillator signal from a modulated output signal of the high frequency oscillator.