High frequency phase shifting circuit

摘要

The phase shifting circuit includes a frequency mixing circuit (20) which receives an input signal (E) and a signal from a local oscillator (21). The mixing circuit output is connected to a bandpass filter (22) and a delay line (23) connected in series with the first mixer circuit. A second mixing circuit (24) receives the signal from the first circuit and a second signal from the local oscillator. An output signal (S) is delivered by the second mixing circuit through a band-pass filter (25).