Pattern-Reconfigurable Cavity-Backed Antenna Based on Radiant Metal Blocks

IF 4.8 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-09-10 DOI:10.1109/LAWP.2024.3456778

Tian-Gui Huang;Fu-Chang Chen;Kai-Ran Xiang;Liu-Yu Wei;Wen-Feng Zeng

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Abstract

In this letter, a design method for the reconfigurable radiant metal block antenna with beam switching is proposed. The pattern-reconfigurable antenna is realized using the concept of mismatch in filter theory. The positive intrinsic negative (PIN) diodes are employed to change the characteristic current mode of the radiant metal block to achieve the switching of the matched or mismatched state between the block and the resonant metal cavity. Based on this feature, a second-order reconfigurable cavity antenna is designed by placing reconfigurable metal blocks around the resonant metal cavity. The designed antenna is capable of covering a 360

$^{\circ }$

area range. Not only can different radiation patterns be designed for switching, but also it is ensured that the second-order filtering characteristics are maintained when switching beams. For validation, a six-beam switchable metal block cavity filtering antenna is fabricated and measured. The bandwidth of the designed antenna is 4.8% and the radiation pattern can be controlled to switch from 0

$^{\circ }$

to 360

$^{\circ }$

in steps of 60

$^{\circ }$

. The nice consistency between the measured and simulated results validates the proposed design methodology.

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基于辐射金属块的模式可重构腔背天线

本文提出了一种具有波束开关的可重构辐射金属块天线的设计方法。利用滤波理论中的失配概念实现了可重构天线。采用正极本质负（PIN）二极管改变辐射金属块的特性电流模式，实现块与谐振金属腔之间匹配或不匹配状态的切换。基于这一特点，通过在谐振腔周围放置可重构金属块，设计了二阶可重构腔天线。设计的天线能够覆盖360$^{\circ}$的面积范围。不仅可以设计不同的辐射方向图进行切换，而且可以保证在切换光束时保持二阶滤波特性。为了验证，制作并测量了六波束可切换金属块腔滤波天线。设计的天线带宽为4.8%，可以控制辐射方向图从0$^{\circ}$切换到360$^{\circ}$，步进为60$^{\circ}$。测量结果与仿真结果的一致性验证了所提出的设计方法。

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来源期刊

IEEE Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

期刊介绍： IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.

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