Evaluation of End Effects and Lumped Capacitance of Microstrip with Anisotropic Substrates - Transverse Transmission Line Technique

In this paper transverse transmission line technique is used to analyse the lumped capacitance and end effects of microstrip line with anisotropic substrate. In the resulting capacitance expression, the only parameter dependent on the transmission media is the admittance at the charge plane Which Can be easily determined using a two wire transmission line equivalent. Extensive design data on the lumped capacitance and end effects of micros trip with anisotropic substrates, sapphire and pyrolytic boron nitride, are generated. This data should be very useful for the design of filters and directional couplers in microstrip configuration with anisotropic dielectrics.