Abstract:
An effective technique for reducing electromagnetic interference within enclosures hosting microwave circuits is based on an artificial Perfect Magnetic Conductor (PMC) surface. This fictitious surface can be obtained by accordingly placing metallic pins on a regular pattern covering the enclosure lid. Previously published papers developed simple analytical expressions to predict the band-gap limits where no cavity resonances occur. The work presented herein aims to show a realistic example of a satellite K band transmitter where the analytical design technique is applied. The design procedure is detailed and the pins and lid are accordingly synthesized. Full-wave simulations are run on simplified models where active circuits are removed. The results show clearly the effectiveness of the pinned cavity in minimizing coupling parameters among the various circuit sections, therefore the simple analytical expressions represent a simple and efficient way for enclosure and pin design.
