Title :
Computation of input impedance of printed antennas with finite size and arbitrarily shaped dielectric substrate and ground plane
Author :
Cai-Cheng Lu ; Yu, Chun
Author_Institution :
Dept. of Electr. Eng., Univ. of Kentucky, Lexington, KY, USA
Abstract :
The input impedances of a microstrip antenna with finite and curved substrates are calculated using the hybrid volume surface integral equation approach. The results for flat and large substrate cases are compared with the measurement as well as the method of moment solution based on the spectral domain Green´s function for infinitely large ground plane. Numerical results show that the input impedance can be significantly influenced when the substrate of a patch antenna is reduced in size or curved in shape.
Keywords :
Green´s function methods; electric impedance; integral equations; method of moments; microstrip antennas; arbitrarily shaped dielectric substrate; curved shaped substrate; finite size substrate; hybrid volume surface integral equation approach; method of moment solution; microstrip antenna; patch antenna substrate; printed antenna input impedance computation; spectral domain Green´s function; Antenna measurements; Dielectric measurements; Dielectric substrates; Green´s function methods; Integral equations; Microstrip antennas; Moment methods; Patch antennas; Shape; Surface impedance;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2004.823894
