Measured Antenna Response of a Proposed Microwave Tomography System Using an Efficient 3-D FDTD Model
Date
2008
Authors
Padhi, Shantanu
Fhager, Andreas C-R
Persson, Mikael
Howard, John
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Electrical and Electronics Engineers (IEEE Inc)
Abstract
This letter presents a detailed study of a microwave tomography system using 3-D finite-difference time-domain methods (FDTDs). The algorithm, which uses a subcell model in form of the thin-wire approximation to model wire antennas, has been validated numerically using published numerical electromagnetic code (NEC) data for dipole antennas, and experimentally by comparing with measurements obtained for a monopole antenna array. The agreement between calculated and measured performances of the monopoles is close. In order to understand the fabrication tolerance, a parametric study was performed with regards to position of ground plane and grid size. It is found that the ground plane plays an important role in the performance of the monopole antennas. The excellent agreement is very promising for future deployment of the algorithm in 3-D microwave tomography applications.
Description
Keywords
Keywords: Antenna response; Fabrication tolerances; FDTD model; Grid size; Ground planes; Microwave imaging; Microwave tomography; Microwave tomography systems; Monopole antenna; Numerical electromagnetic codes; Parametric study; Resistive voltage; Subcell model; W Finite difference time domain method; Microwave imaging; Microwave measurements; Resistive voltage source; Transient analysis
Citation
Collections
Source
IEEE Antennas and Wireless Propagation Letters
Type
Journal article