An Easily Implementable Network Analyzer

A simple network analyzer is devised which makes use of the sampling and time-division multiplexing techniques to detect a signal in a phasor form. Composed of a binary 90° phase shifter and a coherent detector, the detection system involved allows the real and imaginary parts of a scattering parameter to be detected sequentially. The performance of a prototype analyzer supports the detection principle. The error analysis is also given to specify the operation of a binary 90° phase shifter needed for the analyzer to assure a prescribed measurement accuracy.