2450MHz侵入式天线的设计与实验

Designment and experiment on invasive antennas at 2450MHz

目的:对 2450MHZ全裸、半裸、偶极子和挽袖侵入式医用微波辐射天线的热疗性能进行实验比较。方法:通过对莴笋加热,测定4种天线的比吸收率,比较它们的加热效果。结果:挽袖天线的加热效果最好,真次是偶极子天线加热效果较好,全裸和半裸天线容易发生打火现象。结论:挽袖天线的加热效果最好,它的加热范围大,形状固定,基本不受插入深度的影响。

To study and compare the performances of four kinds of 2450MHz antennas, the ones of non-insulted (bare), insulated-open-tip (I.O.T), dipole-type and sleeve are tested for their specific absorption rate (SAR) by heating the lettuces. Sleeve antennas are found with such excellences as the best heating effect, wide heating scope, fixed shape and independence of its depth of insert. Dipole-type antennas are inferior but close to sleeve antennas, whereas the other two kinds of antennas may result in the phenomena of striking fire.