圆形偏振平面天线的一种新设计

M. Matsunaga, T. Matsunaga
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引用次数: 3

摘要

本文介绍了一种新型平面天线,该天线在超高频波段辐射圆极化波。所展示的天线具有以下吸引人的特点:它们是(a)单层完美平面天线,(b)天线通过平衡馈电到一个端口而没有任何移相器来辐射圆极化波,(c)天线的半功率波束宽度非常宽,(d)在UHF频段使用时非常有用。这种天线被命名为“交叉螺旋天线”,以下简称为csa,因为它们是缠绕成十字形的螺旋天线。csa有望被用作UHF频段RFID天线,因为它们的单层结构可以很容易地通过印刷技术等手段制造,并且通过在每个csa上安装一个传统上用于RFID标签的线性极化天线的IC芯片,它们能够辐射圆极化波。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A New Design of Circular Polarized Planar Antennae
Newly designed planar antennae which radiate circularly polarized waves at the UHF band are presented in this paper. The antennae presented have the following attractive features : They are (a) single layered perfectly planar antennae, (b) antennae that radiate circularly polarized waves by balanced feeding to one port without any phase shifters, (c) antennae whose half-power beam width is very wide, and (d) useful when in use at the UHF band. The antennae have been named “Cross Spiral Antennae,” abbreviated hereafter as CSAs, for they are spiral antennae wound in the form of a cross. CSAs are expected to be used as UHF band RFID antennas due to their single layered structure which can be made easily by means of printing techniques, etc. and to their ability to radiate circularly polarized waves by mounting on each of them an IC chip that has been used conventionally with linearly polarized antennae for RFID tags.
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