Automated Diplexer Design With Key Performance Indicator-Based Objectives

Microwave diplexers are often designed iteratively via manual channel-by-channel or resonator-by-resonator local optimization procedures due to high dimensionality in design variables and the complexity of structures. A one-off automated diplexer method is yet be developed. To achieve this, other than improved optimizers, an effective objective function (OF) critical allow optimizers find desired designs. This letter realizes by proposing key performance indicator (KPI)-based objectives. The KPIs extracted from $S$ -parameter responses. An all-resonator with 22 a Tee-junction 23 using proposed optimization, showing 100% 80% success rates, respectively.