A mixture in Transmitter comprising a rejection of the intermediate frequencies, and low lateral local oscillator (original) (raw)

2001

Abstract

A mixture mixing an intermediate frequency signal FI device with a carrier signal from a local oscillator OL to produce an output signal mainly comprising a component in the high radio frequency RF sideband, the lower sideband component and the OL and IF frequency components being removed. To do this, the device according to the invention comprises two phase shifting lines supplied by the intermediate frequency signal and the carrier signal. Each phase line successively generates four phase shifted by -90 ° signals. These phase shifted signals pass through a set of mixers, couplers and phase shifters so as not to obtain at the output a component at the RF frequency.

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