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A Novel Design of Reconfigurable Monopole Antenna for UWB Applications

机译：超宽带应用中可重构单极天线的新颖设计

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摘要

In this paper, a kind of reconfigurable monopole antenna with multi-resonance and switchable band-notched function is designed and manufactured whose frequency characteristics can be reconfigured electronically to have a single-band notch function in order to block interfering signals from 5.15 GHz - 5.35 GHz HiperLAN, 5 GHz - 6 GHz WLAN or 7.25 GHz - 7.75 GHz for downlink of X-band satellite communication systems. The proposed antenna consists of a square radiating patch, feed-line, and a ground plane with a Fork-shaped conductor-backed plane. By adding an inverted T-shaped and a pair of L-shaped parasitic structures in the ground plane, additional resonances are excited and hence much wider impedance bandwidth can be produced, especially at the higher band, which provides a wide usable fractional bandwidth of more than 135% (3.05 GHz-16.51 GHz). In order to generate reconfigurable band-stop performance, we use a pair of PIN diodes within the antenna configuration. By changing the ON/OFF conditions of the PIN diodes, the antenna can be used to generate a single notch band to isolate and block any interference in the UWB frequency range. The proposed antenna has a small dimension of 12 × 18 × 1.6 mm~3.
机译：本文设计和制造了一种具有多谐振和可切换带隙功能的可重构单极天线，其频率特性可以通过电子方式重新配置为具有单带陷波功能，以阻止5.15 GHz-5.35的干扰信号GHz HiperLAN，5 GHz-6 GHz WLAN或7.25 GHz-7.75 GHz，用于X波段卫星通信系统的下行链路。拟议中的天线由方形辐射贴片，馈线和带有叉形导体支持平面的接地平面组成。通过在接地平面中添加一个倒置的T形和一对L形寄生结构，会激发额外的谐振，因此可以产生更宽的阻抗带宽，尤其是在较高频段，这提供了更大的可用分数带宽。高于135％（3.05 GHz-16.51 GHz）。为了产生可重新配置的带阻性能，我们在天线配置内使用一对PIN二极管。通过更改PIN二极管的ON / OFF条件，可以将天线用于生成单个陷波频段，以隔离和阻止UWB频率范围内的任何干扰。所建议的天线尺寸为12×18×1.6 mm〜3。

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