Wideband two‐port with programmable scattering parameters

Abstract

A two‐port network featuring programmable reflection and transmission coefficients is proposed. The network exhibits a simple structure and can operate over a wide frequency range. A detailed description of the presented system is given, including the theoretical analysis and derivation of design equations. To assess the performance of the manufactured system, the tuning range of reflection and transmission coefficients was measured in the frequency range from 0.5 to 2.0 GHz. The obtained results show good agreement with the theoretical results over the entire two‐octave operational bandwidth. Moreover, the potential application of the developed two‐port for the generation of various reflection coefficients in calibration of a multiport reflectometer is demonstrated.