Printed Circuit Dipole Characteristics for Microwave, Millimeter and Submillimeter Wave Applications

摘要

This report deals with the theory and design of antennas printed on or embedded in a grounded substrate. A theoretical approach is implemented which accounts accurately for the physical effects involved including surface waves. The Green's function has been obtained synthesizing the fields of Hertzian dipoles which are oriented in arbitrary directions and which are printed on or embedded in the substrate. By considering Pocklington's integral equation with proper choice of expansion and testing functions, solution for current distribution and input impedance is obtained by matrix inversion. As an example, thin-type printed and embedded circuit antennas with symmetric or asymmetric excitation are considered. Antenna currents input impedance, bandwidth and resonant resistance are obtained for a variety of antenna arrangements.