Applications of Takahasi´s results to broadband matching for microwave amplifiers

This paper presents simple formulas for broad-band matching microwave amplifiers, such as input, output, or interstage matching of GaAs FET amplifiers and IMPATT diode reflection amplifiers using lossless ladder low-pass and bandpass Chebyshev networks based upon the results of Takahasi. The method bypasses the gain-bandwidth theory and produces lumped lossless equalizers which can be readily approximated by distributed circuits which require few iterations of optimizations to yield the performance of their lumped counterparts.