Three dimensional transmission lines and special elements design

We report the development of an accurate closed-form model for 3D transmission line analysis and synthesis. Close agreement is observed between our model and full wave analysis. Additionally, we built and measured a number of 3D special elements. Excellent performance is obtained from a delay line, and a broadband coupler. A 3D 4-way Wilkinson divider design and measurement are presented. Transmission line losses are measured.