Title

Application of the finite-difference time-domain method to the analysis of microstrip patch antennas

Document Type

Thesis

Degree

Master of Science (MS)

Department

Electrical Engineering

First Advisor's Name

Tadeusz Babij

First Advisor's Committee Title

Committee Chair

Second Advisor's Name

Grover Larkins

Third Advisor's Name

Subbarao Wunnava

Date of Defense

5-15-1996

Abstract

The knowledge of the behavior of pager antennas and the magnetic field within 2 cm of lossy dielectric cylinders is important in applications involving terrestrial and satellite communications. The distribution of the magnetic fields close to the lossy dielectric cylinders affects the performance of these personal communication devices. By analyzing the magnetic fields close to these dielectric cylinders, information on the magnetic field effects may be obtained that may allow us to improve on the design and performance of these close-to-body communication devices. Finite-Difference Time-Domain (FD-TD) simulations were applied to lossy dielectric cylinders, “SALTY” and SALTY-LITE”, and to a microstrip antenna in the presence of these structures. The results obtained were compared to measurements. The frequency-dependent scattering parameters, the inputimpedance, and the radiation pattern of this antenna are calculated and validated. The results clearly indicate that FD-TD is an efficient and accurate tool to model and analyze complex electromagnetic structures with the unique ability to display the transient response of the electromagnetic fields in time domain.

Identifier

FI14060159

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