Frequency and polarization reconfigurable antenna for wireless communication
Frequency and polarization reconfigurable antenna for wireless communication
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DOI：
10.1109/iceca.2017.8203689
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发表时间：
2017-04
期刊：
影响因子：
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通讯作者：
Y. B. Dhanade;Y. Choukiker
中科院分区：
文献类型：
--
作者：
Y. B. Dhanade;Y. Choukiker
本文提出了一种采用宽带频率捷变贴片同时实现极化重构的可重构天线。天线由一个正方形微带贴片和一个正方形微带环通过四个变容二极管连接而成。这些变容二极管用于实现1.6GHz至2.4GHz之间的频率可重构性（频率捷变带宽= 40%，S11 <= −10 dB）。在辐射器上采用两个正交馈电点使得能够在四个偏振状态（两个线性偏振和两个圆偏振）之间切换。辐射器上的这两个馈电点可以由极化馈电网络（PFN）激励。PFN由威尔金森功率分配器和希夫曼90°移相器组成。模拟结果相当吻合。
A reconfigurable antenna employing wideband frequency agile patches with simultaneous polarization reconfiguration is presented under the article. An antenna consists of a square microstrip patch which is connected to a square microstrip ring by using four varactor diodes (variable capacitor diode). These varactor diodes are used to achieve frequency reconfigurability between 1.6GHz to 2.4GHz (frequency agility bandwidth= 40%, S11 <= −10 dB). Employing two orthogonal feed points on the radiator enables switching amongst four polarizations states (two linear and two circular polarizations). These two feed points on the radiator can be excited by polarization feed network (PFN). PFN consists of a Wilkinson Power Divider and Schiffman 90° phase shifter. The simulated results agree reasonably well.