Curved microstrip lines as compact wideband circularly polarised antennas
Curved microstrip lines as compact wideband circularly polarised antennas
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DOI：
10.1049/ij-moa:19790002
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发表时间：
1979
期刊：
影响因子：
--
通讯作者：
C. Wood
中科院分区：
文献类型：
--
作者：
C. Wood
本文介绍了一种基于支持单行波的弯曲微带传输线辐射的小型微带天线固有圆极化新技术。从有效磁流源的角度对辐射进行了分析，估计了波的衰减系数，与实验结果比较吻合。圆形和螺旋天线都获得了良好的特性，由于线路终端吸收的功率，在10 GHz时可获得高达40%的可用带宽，平均效率为50%。与传统微带圆极化天线相比，其优点是避免了由于谐振匹配而产生的带宽限制，并消除了产生圆极化的馈电网络。
A new technique for the inherent generation of circular polarisation from compact microstrip antennas is described, based on radiation from curved microstrip transmission lines supporting a single travelling wave. The radiation is analysed in terms of effective magnetic current sources to give an estimate of the decay coefficient of the wave, which is found to be in reasonable agreement with experiment. Good characteristics are obtained from both circular and spiral antennas, with a useable bandwidth of up to 40% being available at 10 GHz for an average efficiency of 50%, owing to power absorbed in the line termination. The advantages obtained over conventional microstrip circular-polarised antennas are the avoidance of band-width limitations owing to resonant matching and the elimination of feed networks to produce circular polarisation.