Title :
Input impedance of a circular microstrip antenna in a general BOR environment
Author_Institution :
Atlantic Aerosp. Electron. Corp., Greenbelt, MD, USA
Abstract :
Exterior admittances, calculated with a body of revolution (BOR) moment-method solution, are used with the disk cavity Green´s function to calculate the input impedance to various probe-fed circular microstrip patch geometries via the induced EMF method. The main advantage of the method is its ability to analyze general, rotationally symmetric patch configurations. The tradeoff associated with this generally is increased CPU time, which is strictly a function of the complexity/size of the exterior BOR region. Accuracy of the solution is good to within 1% in resonant frequency for the thick and thin substrate cases considered.<>
Keywords :
antenna theory; electric impedance; microstrip antennas; body of revolution moment-method solution; circular microstrip antenna; disk cavity Green´s function; exterior BOR region; exterior admittances; general BOR environment; induced EMF method; input impedance; probe-fed circular microstrip patch geometries; resonant frequency; thick substrate; thin substrate; Admittance; Aerospace electronics; Capacitance; Dielectrics; Geometry; Green´s function methods; Impedance; Microstrip antennas; Moment methods; Slabs;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.
Conference_Location :
Dallas, TX, USA
DOI :
10.1109/APS.1990.115190
