Maodudul Hasan, Htet Wai Htun, E. Nishiyama, I. Toyoda
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引用次数: 0
摘要
本文提出了一种用于5.8 g Hz频段应用的单馈四极化天线。该天线包含一个可切换馈电网络，一个单微带天线和PIN二极管。该天线还采用短端微带线微扰实现圆极化。可切换馈电网络采用两个PIN二极管控制其两个分支，实现两种线性(LP)模式切换。第三二极管集成在微扰段和贴片元件的上角之间。通过激活微扰与辐射贴片元件共同作用，同一天线可以产生两种圆极化模式。通过仿真验证了这一概念。低电压和高电压条件下的阻抗带宽分别约为1.6%和2.6%。在感兴趣的范围内观察到约0.7% 3 db轴比带宽。
Proposal of Single-Feed Microstrip Antenna for Quad-Polarization Agility With Short-Ended Microstrip- Line Perturbation
This manuscript proposes a single-feed quad-polarized antenna for 5.8-G Hz band applications. The antenna contains a switchable feed network, a single microstrip antenna and PIN diodes. The antenna also employs a short-ended microstrip-line perturbation for achieving circular polarization. The switchable feed network employs two PIN diodes to control its two branch to achieve two linear (LP) modes switching. A third diode is integrated between the perturbation segment and upper corner of the patch element. By activating the perturbation to function together with the radiating patch element, the same antenna can generate two circular polarization (CP) modes. The concept is examined through simulation. The impedance bandwidth for LP and CP conditions are about 1.6% and 2.6%, respectively. Around 0.7% 3-dB axial ratio bandwidth is observed within the range of interest.
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