HF-Mischerschaltung sowie Quadratur-Modulator, Quadratur-Demodulator und Frequenzumsetzer mit einer solchen HF-Mischerschaltung

A time-share mixer circuit that receives an input signal and provides a time-share output signal differing in frequency from the input signal by Delta f, the circuit comprising: a mixer having a primary input port, an oscillator input port, and an output port; a switching signal source that provides a switching signal having a frequency off fc2; a local oscillator that provides an oscillator signal differing in frequency from Delta f by the frequency of the switching signal; and a clocked inverter in series with a port of the mixer, the clocked inverter operating in response to the switching signal to cause the time-share output signal to alternate between an in-phase output signal and a quadrature-phase output signal, the in-phase output signal being that output signal which the mixer would provide if the input signal were applied to the primary input port and an oscillator signal of frequency Delta f were applied to the oscillator input port, the quadrature-phase output signal being that output signal which the mixer would provide if the input signal were provided to the primary input port and the oscillator signal of frequency Delta f were phase-shifted by 90 degrees and then applied to the oscillator input port