Signal transmission and reception system

Details Signal transmission and reception system Signal transmission and reception system

H - Electricity

04

B

325/22

H04B 1/40 (2006.01) H04B 1/50 (2006.01)

Patent

CA 1231384

ABSTRACT OF THE DISCLOSURE A transmission and reception system wherein a local oscillator of the receiver is dispensed with by using the output of a transmission oscillator modulated by a modulation signal in lieu of a local oscillator output of the receiver. The modulated component mixed as a result of employing the transmission oscillator as a local oscillator is canceled at a second mixer or mixers subsequent thereto as a result of modulation of the output of a second local oscillator or local oscillators subsequent thereto by said modulation signal level-adjusted and phase-shifted to required values respectively. In addition, by applying the modulated output of the transmission oscillator having been rid of the modulated component to the receiver as a local oscillation signal, the local oscillator for removing the modulated component is dispensed with.

461781

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