作者：喻志远¹, 王琪²

作者单位：1. 电子科技大学物理电子学院, 四川成都 610054;
2. 盐城师范学院计算机系, 江苏盐城 224002

关键词：平面小天线; 平面侧向辐射; 介质损耗正切; 天线辐射效率; 接地板开槽

摘要：

在短距离移动通信中,由于系统对天线的效率和增益要求不高,人们大量使用FR4(玻璃纤维双面铜板)构造的天线,但未见损耗的分析报道。分析了一种构造于廉价的玻璃纤维电路板上的侧向辐射的小型平面天线,首次给出了天线在不同的介质损耗正切(tg)下的天线阻抗带宽,天线辐射效率以及方向图和天线增益的数值分析结果。

Numerical analyses of a small planar antenna with side radiation direction

YU Zhi-yuan¹, WANG Qi²

1. School of Physical Electronics, University of Electronic Science and Technology, Chengdu 610054, China;
2. Department of Computer of Yancheng Teacher's College, Yancheng 224002, China

Abstract: There are many antenna based on the material of FR4 for short distance Mobile Communications.But there is no analysis about the loss of the materials.An Analysis of a small side-fire antenna constructed in a cheap printed circuit board was given in the first time by the time domain method.It numerically presented the antenna's impedance band width,radiation efficiency and gain under difference loss tangent.The radiation pattern antenna shows that the antenna has a character of side-fire.

Keywords: Small planar antenna; Planar side-fire radiation; Dielectric loss tangent; Antenna radiation efficiency; Slot in ground planar

2007, 33(3): 44-46,56  收稿日期: 2006-8-28;收到修改稿日期: 2006-11-10

基金项目: 江苏省教育厅自然科学基金(05KJD510248)

作者简介: 喻志远(1946-),男,浙江绍兴人,教授,主要从事电磁场与微波技术研究。

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