Title :
Analysis of stacked microstrip patches with a mixed potential integral equation
Author :
Barlately, L. ; Mosig, Juan R. ; Sphicopoulos, Thomas
Author_Institution :
Lab. d´´Electromagn. et d´´Acoust., Ecole Polytech. Federale de Lausanne, Switzerland
fDate :
5/1/1990 12:00:00 AM
Abstract :
A method based on the mixed potential integral equation for the analysis of flat microstrip antennas in a double-layer substrate is presented. The method is used to compute the input impedance of a stacked patch configuration. This structure permits a larger bandwidth and may also provide dual-frequency operation. The Green´s functions are discussed in detail, and numerical results are obtained for the propagation constant of the dominant surface wave. Theoretical and experimental results are compared for a dual-frequency and a broadband stacked patch antenna. Theoretical results for the input impedance are in good agreement with measurements. The difference between theoretical and experimental results for the resonant frequency is less than 4.5% in all cases
Keywords :
Green´s function methods; antenna theory; electric impedance; integral equations; microstrip antennas; Green´s functions; broadband stacked patch antenna; dominant surface wave; double-layer substrate; dual-frequency operation; flat microstrip antennas; input impedance; mixed potential integral equation; numerical results; propagation constant; stacked microstrip patches; Antenna measurements; Antennas and propagation; Bandwidth; Green´s function methods; Integral equations; Microstrip antennas; Patch antennas; Propagation constant; Surface impedance; Surface waves;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
