Construction of Lossless Ladder Networks With Simple Lumped Elements Connected Via Commensurate Transmission Lines

In this work, an algorithm to design lossless ladder networks with simple lumped elements connected via commensurate transmission lines is proposed. After giving the algorithm, a lumped-element low-pass Chebyshev filter was transformed to its mixed-element counterpart to illustrate the utilization of the algorithm. The filter, designed for a frequency band around 1 GHz, was fabricated and experimentally characterized. We find very good agreement between measured and simulated transducer power gain over the entire frequency band of interest.