Liquid Metal Reconfigurable Patch Antenna for Linear, RH, and LH Circular Polarization With Frequency Tuning

IF 1.7 Q2 Engineering Canadian Journal of Electrical and Computer Engineering-Revue Canadienne De Genie Electrique et Informatique Pub Date : 2020-01-01 DOI:10.1109/CJECE.2019.2904898

Arcesio Arbelaez, I. Goode, J. Gomez-Cruz, C. Escobedo, C. Saavedra

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引用次数: 5

Abstract

A microstrip circular patch antenna with frequency and polarization reconfigurability using liquid metal is presented. The antenna has a C-shaped slot cut at the center of the patch and reconfigurability is achieved using two putty containers and liquid metal to switch between four different states. Linear polarization (LP) is observed at 5.83 GHz when there is no liquid metal inside the containers. Depositing two liquid metal droplets in the containers yields circular polarization (CP) at 6 GHz. The right-hand CP (RHCP) is obtained when the right-most container is filled, and the left-hand CP (LHCP) is obtained when the leftmost container is filled with the liquid metal. When all containers are filled, LP is observed at 6.15 GHz. For the LP case, the antenna has a measured gain of 2.68 dB when all containers are filled and a measured gain of 3 dB when the containers are empty, and the axial ratios (ARs) are 19.65 dB (filled containers) and 23.74 dB (empty containers). When the LHCP is activated, the gain is 2.44 dB and the AR is 0.54 dB at 6 GHz. For RHCP, the gain is 2.37 dB and the AR is 1.5 dB at 6 GHz.

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液态金属可重构贴片天线用于线性，RH和LH圆极化与频率调谐

提出了一种利用液态金属实现频率和极化可重构的微带圆形贴片天线。天线在贴片的中心有一个c形的槽口，使用两个腻子容器和液态金属在四种不同的状态之间切换，实现了可重构性。当容器内没有液态金属时，在5.83 GHz处观察到线性极化(LP)。在容器中沉积两个液态金属液滴可产生6 GHz的圆偏振(CP)。当最右边的容器被填满时，得到右边的CP (RHCP)，当最左边的容器被液态金属填满时，得到左边的CP (LHCP)。当所有容器都被装满时，观察到的LP频率为6.15 GHz。对于LP情况，当所有容器都被填充时，天线的测量增益为2.68 dB，当容器为空时，天线的测量增益为3 dB，轴向比(ARs)为19.65 dB(填充容器)和23.74 dB(空容器)。当LHCP被激活时，6 GHz时增益为2.44 dB, AR为0.54 dB。对于RHCP，在6 GHz时增益为2.37 dB, AR为1.5 dB。

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来源期刊

Canadian Journal of Electrical and Computer Engineering-Revue Canadienne De Genie Electrique et Informatique 工程技术-工程：电子与电气

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期刊介绍： The Canadian Journal of Electrical and Computer Engineering (ISSN-0840-8688), issued quarterly, has been publishing high-quality refereed scientific papers in all areas of electrical and computer engineering since 1976