Microstrip patch antenna power balance by a mixed time frequency method

Author

Jouvet, M. ; Page, L. ; Jecko, B.

Author_Institution

IRCOM, Brive, France

fYear

1992

fDate

18-25 June 1992

Firstpage

1653

Abstract

A novel method is presented to determine the power balance of an arbitrary-shape microstrip antenna. The finite-difference time-domain (FDTD) method is used to solve Maxwell´s equations. The solutions of the electromagnetic fields are then Fourier-transformed. The near-field Poynting vector flux is calculated through a closed area surrounding the antenna. The radiated power in the free space and the surface wave power losses are also calculated. The summation of these two terms is then compared to the power delivered by the generator to the antenna. The antenna is assumed to be lossless. A comparison is made between the results obtained in this way and by Alexopoulos´ (1981) method, associated with the FDTD method for the determination of surface currents. The radiation pattern is obtained by means of the equivalence principle near the antenna. The radiation pattern obtained according to the equivalence principle is very similar to the one derived from Alexopoulos´ method.<>

Keywords

Maxwell equations; antenna radiation patterns; finite difference time-domain analysis; microstrip antennas; FDTD; Fourier transform; Maxwell´s equations; electromagnetic fields; equivalence principle; finite-difference time-domain; free space; lossless antenna; microstrip patch antenna; mixed time frequency method; power balance; radiated power; radiation pattern; surface currents; surface wave power losses; Antenna radiation patterns; Electromagnetic fields; Finite difference methods; Maxwell equations; Microstrip antennas; Patch antennas; Power generation; Surface waves; Time domain analysis; Time frequency analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE

Conference_Location

Chicago, IL, USA

Print_ISBN

0-7803-0730-5

Type

conf

DOI

10.1109/APS.1992.221541

Filename

221541