Title :
On the modeling of arbitrarily-shaped printed circuit antennas
Author :
Chi, Chuan-Li ; Castaneda, J.A.
Author_Institution :
Phraxos Res. & Dev. Inc., Santa Monica, CA, USA
Abstract :
A numerical technique has recently been developed to deal with printed circuit antennas with arbitrary shapes via the method of moments (see H. Nakano et al. 1987). However, the drawback of this numerical approach is the lack of efficient evaluation of impedance matrix elements when the moment method is enforced. It is shown that the image extraction method of C.L. Chi (1987) can be used to enhance the computation efficiency significantly. The analysis is based on the decomposition of the dynamic Green´s function. One of the applications of this efficient numerical technique is to study the radiation characteristics of a printed spiral antenna. A printed spiral antenna composed of semi-ellipses is considered as a numerical example.<>
Keywords :
Green´s function methods; antenna theory; microstrip antennas; arbitrary shapes; computation efficiency; dynamic Green´s function; image extraction method; impedance matrix elements; moment method; numerical technique; printed circuit antennas; radiation characteristics; spiral antenna; Algorithm design and analysis; Antennas and propagation; Dipole antennas; Green´s function methods; Impedance; Moment methods; Printed circuits; Shape; Spirals; Transmission line matrix methods;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1989. AP-S. Digest
Conference_Location :
San Jose, CA, USA
DOI :
10.1109/APS.1989.135058
