Microwave Equivalent-Circuit Parameters of Gunn-Effect-Device Packages

The packages in which Gunn-effect devices are commonly mounted are found to have parasitic reactances which are significant at X-band. An accurate knowledge of the package equivalent circuit is essential. Precision measurements in a coaxial system have therefore been made over a very wide range of frequencies, and a consistent equivalent circuit has been derived. This differs somewhat from previously assumed equivalent circuits. The experimental results are analyzed in terms of a theoretical model based on the known structure of the package.