Towards a Robust BCDR Design for Out-of-Plane Permittivity Measurements

The paper presents the electromagnetic modelling and mechanical considerations for the design of a Balanced-type Circular Disk Resonator (BCDR). The purpose of the work is to develop a robust in-house methodology for measuring the out-of-plane component of complex permittivity of materials at microwave and mmWave frequencies. In this summary, a novel concept of a thick central electrode manufactured as a pair of discs on a double-sided PCB substrate is proposed, evaluated by modelling, implemented, and validated in a BCDR prototype.