A dual six-port with homodyne phase-sensitive detectors as new option of microwave network analyzer

The paper presents a new concept of the broadband dual six-port network analyzer with phase-sensitive homodyne detectors. The features of the homodyne detection process with DSBSC audio phase modulation are reminded. The paper also contains a description of the dual six-port analyzer system which is able to measure all scattering coefficients of a tested two-port.