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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：具有用于无线应用的分支线耦合器馈电网的频率可调圆极化天线

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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：在本文中，研究了频率调谐和圆极化的同心圆微带天线。所提出的天线包括用于频率调谐和分支线耦合器（BLC）馈电网的变容二极管，以实现圆极化（RHCP / LHCP）。通过将5.33pf（0V）之间的变容二极管二极管电容改为1.30 PF（15 V）达到频率调谐（2.34-2.68 GHz）。通过BLC馈送网络输出端口在天线中实现了右手圆极化（RHCP）和左手圆偏振（LHCP）。 BLC馈送网络的阻抗带宽（2.05-3.13 GHz）与圆微带天线频率可调带宽良好匹配。所提出的天线是制造的，并且使用数学建模和实验验证来验证模拟结果。

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