Article

FDTD simulation of a microstrip phased array with a coaxial feed

Electromagn. Commun. Lab., Pennsylvania State Univ., University Park, PA, USA;
IEE Proceedings - Microwaves Antennas and Propagation (impact factor: 0.49). 07/2004; DOI:10.1049/ip-map:20040269 pp.193 - 198
Source: IEEE Xplore

ABSTRACT In the paper, the authors present a novel approach for analysing microstrip patch antennas using the finite difference time domain (FDTD) technique. Specific attention is paid to the issue of modelling the coaxial feed line, using a voltage source with a lumped resistance type of internal impedance. The results of the simulation are found to be in close agreement with those derived by using the method of moments (MoM). The analysis is then extended to the case of planar arrays of microstrip patch antennas. The active element pattern of the patch antenna is first extracted by using the FDTD, which is later used to predict the performance of the planar array. The paper also examines the numerical superefficiency and accuracy of the technique, and discusses its computational complexity.

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Keywords

analysing microstrip patch antennas
 
coaxial feed line
 
computational complexity
 
FDTD
 
finite difference time domain
 
lumped resistance type
 
microstrip patch antennas
 
numerical superefficiency
 
patch antenna
 
planar array
 
planar arrays
 
voltage source