Liquid‐metal‐fluidically polarization reconfigurable microstrip patch antenna

Abstract

In this article, we propose a liquid‐metal‐fluidically polarization reconfigurable microstrip patch antenna. The edge‐truncated patch is designed to generate circular polarization (CP), and two microfluidic channels are designed for the polarization reconfigurability. Therefore, the polarization of the proposed antenna is switched to linear polarization (LP) from the CP when the liquid metal is injected on the microfluidic channels. The microfluidic channels are fabricated on the polydimethylsiloxane (PDMS) material, and eutectic gallium‐indium (EGaIn) is used as the liquid metal. The performance of the proposed antenna is numerically and experimentally demonstrated. The measured 10‐dB impedance bandwidth is 1.579‐1.619 GHz and 1.563‐1.587 GHz for the CP and LP modes, respectively. At the CP mode, the measured axial ratio (AR) and RHCP gain at 1.595 GHz are 2.267 dB and 6.59 dBic, respectively. At the LP mode, the measured AR and peak gain at 1.585 GHz are 12.335 dB and 5.18 dBi, respectively.

Multitasking Device Regulated by the Gravity Field: Broadband Anapole‐Excited Absorber and Linear Polarization Converter

“…[ 36 ] Copper is an outstanding candidate for the top metal patch and ground in the structure, and its conductivity is σ 2 = 5.8×10 7 s m −1 . [ 37 ] For the normal incident TE wave propagating along with ‐ z ‐direction, the MTD can obtain its MMA state on the strength of the formation of the SRR structure.…”

“…[36] Copper is an outstanding candidate for the top metal patch and ground in the structure, and its conductivity is 𝜎 2 = 5.8×10 7 s m −1 . [37] For the normal incident TE The diagrammatic sketch of the double-layer liquid material in the SRR-shaped grooves. Among the parameters with subscripts, j denotes the resonance unit where the double-layer SRRs pairs are situated.…”

Circuits and Antennas Incorporating Gallium-Based Liquid Metal

“…Table IV summarizes antennas that use LM to switch their polarization: (1) from linear polarization (LP) to circular polarization (CP) [138], [143], [146]- [147]; (2) between different states of LP (e.g. horizontal and vertical) [139], [140], [141], [144]- [145]; and (3) between left-hand CP (LHCP) and right-hand CP (RHCP) [138], [142], [146].…”

A pattern‐ and frequency‐reconfigurable antenna using liquid metal

“…To the authors' knowledge, most of the existing liquid metal based designs focus on single reconfiguration modality, [15][16][17] but few designs of compound type have been reported. Reference 18 presents a liquid metal crossed dipole antenna created by using electrochemically controlled capillarity (ECC) actuation method.…”