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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >Frequency tunable circularly polarized antenna with branch line coupler feed network for wireless applications
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Frequency tunable circularly polarized antenna with branch line coupler feed network for wireless applications

机译：具有分支线耦合器馈电网络的频率可调圆极化天线，用于无线应用

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摘要

In this article, frequency tuning and circularly polarized concentric circular microstrip antenna is investigated. The proposed antenna consist of varactor diode for frequency tuning and branch line coupler (BLC) feed network to achieve the circular polarization (RHCP/LHCP). By changing the varactor diode capacitance between 12.33 pF (0 V) to 1.30 pF (15 V) attain the frequency tuning (2.34-2.68 GHz). The right hand circular polarization (RHCP) and left hand circular polarizations (LHCP) are realized in the antenna through BLC feed network output ports. The impedance bandwidth (2.05-3.13 GHz) of BLC feed network is well-matched with the circular microstrip antenna frequency tunable bandwidth. The proposed antenna is fabricated, and simulated results are verified using the mathematical modeling and experimental verification.
机译：本文研究了频率调谐和圆极化同心圆微带天线。拟议中的天线由用于频率调谐的变容二极管和支路耦合器（BLC）馈电网络组成，以实现圆极化（RHCP / LHCP）。通过将变容二极管电容在12.33 pF（0 V）至1.30 pF（15 V）之间变化，可以实现频率调谐（2.34-2.68 GHz）。通过BLC馈电网络输出端口在天线中实现右旋圆极化（RHCP）和左旋圆极化（LHCP）。 BLC馈电网络的阻抗带宽（2.05-3.13 GHz）与圆形微带天线频率可调带宽非常匹配。制造了所提出的天线，并使用数学建模和实验验证对仿真结果进行了验证。

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