A Sixteen Mode Frequency Reconfigurable Antenna for Underlay Cognitive Radio

2021 IEEE 19th Student Conference on Research and Development (SCOReD) Pub Date : 2021-11-23 DOI:10.1109/SCOReD53546.2021.9652735

Laith Wajeeh Abdullah, A. Sallomi, M. Wali

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引用次数: 1

Abstract

A reconfigurable UWB antenna that meets the requirements of underlay cognitive radio is presented in this paper. This antenna is controllable to reject one or a combination of the bands dedicated for Wi-Max, C-band, WLAN and X-band that coexist within its UWB radiation into one of its fifteen band rejection modes. On the other hand, it can operate in no rejection mode that covers the entire UWB region. This 25x25x0.8 mm3 wide slot antenna with a modified circular radiator is designed to achieve a high impedance bandwidth that covers the 3.1-10.6 GHz range. Four slots, two on each metal face, are etched to create the desired band notches. A PIN diode is placed across each of these four slots to activate/deactivate band suppression. All the possible states resulting from these PIN diodes are useable in this design that it has sixteen operation modes. Good notch characteristics are proved by CST v.10 simulation results of this design. These when merged with the full use of switching states, the large number of operation modes, the variation of rejected states and the simplicity and compactness of the design, all evidence the functionality of this antenna to enhance the quality of communication within the UWB by reducing the interference in the targeted regions.

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一种用于底层认知无线电的16模频率可重构天线

提出了一种满足底层认知无线电要求的可重构超宽带天线。该天线是可控的，可以将其UWB辐射中共存的专用于Wi-Max、C-band、WLAN和X-band的一个或多个频带拒绝为其15种频带拒绝模式之一。另一方面，它可以在覆盖整个超宽带区域的无排斥模式下运行。这款25x25x0.8 mm3宽槽天线采用改进的圆形散热器，旨在实现覆盖3.1-10.6 GHz范围的高阻抗带宽。四个槽，每个金属表面两个，蚀刻以创建所需的带缺口。PIN二极管放置在这四个槽中的每一个上，以激活/停用带抑制。由这些PIN二极管产生的所有可能的状态都可用于本设计，它具有16种工作模式。CST v.10仿真结果证明了该设计具有良好的缺口特性。这些与充分利用开关状态、大量操作模式、拒绝状态的变化以及设计的简单性和紧凑性相结合，都证明了该天线通过减少目标区域的干扰来提高UWB内通信质量的功能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2021 IEEE 19th Student Conference on Research and Development (SCOReD)

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