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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >Ultrawideband circularly polarized antenna with dual band-notched characteristics
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Ultrawideband circularly polarized antenna with dual band-notched characteristics

机译：具有双频段缺口特性的超宽带圆极化天线

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摘要

This article presents an ultrawideband (UWB) crossed dipole antenna with circularly polarized (CP) and dual band-notched characteristics. The proposed design is based on two orthogonal tapered dipoles for UWB CP operation and a square-shaped cavity for high broadside gain over the entire operating bandwidth (BW). To generate dual band-notched characteristics, two separated slots are inserted into each dipole's arm. This antenna yields measured impedance BW of 100% (3.2-9.6 GHz) with dual-band rejection centered at 5.2 and 5.8 GHz. Correspondingly, dual rejected bands are also observed in the original UWB CP band, which ranges from 3.2 to 8.2 GHz. Additionally, the proposed antenna exhibits high broadside gains better than 6.2 dBic and radiation efficiency greater than 82%.
机译：本文介绍了一种具有圆极化（CP）和双频带陷波特性的超宽带（UWB）交叉偶极天线。所提出的设计基于用于UWB CP操作的两个正交锥形偶极子和用于整个操作带宽（BW）上的高宽边增益的方形腔。为了产生双带槽特性，将两个分开的槽插入每个偶极子的臂中。该天线可产生100％（3.2-9.6 GHz）的测量阻抗BW，并以5.2和5.8 GHz为中心的双频带抑制。相应地，在原始UWB CP频带中也观察到了双拒绝频带，其范围为3.2至8.2 GHz。另外，所提出的天线展现出优于6.2 dBic的高宽边增益，辐射效率高于82％。

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