Ratio of Complex Amplitudes Measurement by Means of Six-Port with Homodyne Phase-Sensitive Detectors

The paper presents the next after the six-port reflectometer application of homodyne detectors - six-port vector voltmeter. Homodyne detection with rectangular phase modulation is used in the measurement system. Mathematical model of the system, which takes into account all imperfections of system components is discussed in detail. The paper contains also the description of the principles of the system calibration procedure. Separate section is devoted to present the solutions of six-port structure.