On the design of a doubly-matched (D-M) diplexer with a common junction

Two sets of formulas and a three-stage computer aided approach are presented for the design of a doubly-matched (D-M) diplexer composed of two channel equalizers connected either in parallel or in series at a common junction. The diplexer provides a good match between a complex generator impedance and two complex channel loads. It is known as the doubly-matched (D-M) diplexer. A design example of a D-M diplexer is given to demonstrate the approach