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Monopole antennas for microwave catheter ablation

被引：57
作者：
Labonte, S
Blais, A
Legault, SR
Ali, HO
Roy, L
机构：
[1] Department of Electrical Engineering, University of Ottawa, Ottawa, Ont.
来源：
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 1996年 / 44卷 / 10期
基金：
加拿大自然科学与工程研究理事会;
关键词：
D O I：
10.1109/22.539941
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We study the characteristics of various monopole antennas for microwave catheter ablation of the endocardium. The investigation is done with a computer model based on the finite-element method in the frequency domain, Three monopole geometries are considered: open-tip, dielectric-tip, and metal-tip, Calculations are made for the magnetic field, the reflection coefficient and the power deposition pattern of the antennas immersed in normal saline, The theoretical results are compared with measurements performed on prototypes and good agreement is obtained. The antenna characteristics suggest that the metal-tip monopole best fulfills the requirements of catheter ablation. The computer model is then used to compare metal-tip monopoles of different dimensions and to determine design trade-offs.
引用
收藏
页码：1832 / 1840
页数：9
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