A Wideband Non-Uniform Metasurface-Based Circularly Polarized Reconfigurable Antenna

Tran, Huy Hung; Bui, Cong Danh; Nguyen‐Trong, Nghia; Nguyen, Truong Khang

doi:10.1109/access.2021.3066182

Cited by 33 publications

(23 citation statements)

References 31 publications

(28 reference statements)

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“…Other techniques, such as proximity coupled feed [48], aperture-coupled feed [49,50], and L-shaped feeding probe [51,52], can also be used. Some other configurations are suggested, such as slotted antenna [53,54], log-periodic array [55], E-shaped patch [56], circularly polarized patches [57,58], and defected ground method [59,60].…”

Section: Bandwidth Enhancementmentioning

confidence: 99%

Design of Low-Profile Single- and Dual-Band Antennas for IoT Applications

et al. 2021

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This paper presents novel low-cost single- and dual-band microstrip patch antennas. The proposed antennas are realized on a square microstrip patch etched symmetrically with four slots. The antenna is designed to have low cost and reduced size to use in Internet of things (IoT) applications. The antennas provide a reconfigurable architecture that allows operation in different wireless communication bands. The proposed structure can be adjusted to operate either in single band or in dual-band operation. Two prototypes are implemented and evaluated. The first structure works at a single resonance frequency (f1 = 2.4 GHz); however, the second configuration works at two resonance frequencies (f1 = 2.4 GHz and f2 = 2.8 GHz) within the same size. These antennas use a low-cost FR-4 dielectric substrate. The 2.4 GHz is allotted for the industrial, scientific, and medical (ISM) band, and the 2.8 GHz is allocated to verify the concept and can be adjusted to meet the user’s requirements. The measurement of the fabricated antennas closely matches the simulated results.

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Section: Bandwidth Enhancementmentioning

confidence: 99%

Design of Low-Profile Single- and Dual-Band Antennas for IoT Applications

et al. 2021

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“…Similarly, when the incident wave transmits to the reflection type MTS, the reflected and incident wave is synthesized into the reradiated wave, potentially resulting in polarization varying. In Tran et al, 19 the transmission type nonuniform MTS antenna, with CP reconfigurability, obtains a 27% overlapped impedance bandwidth and a profile of 0.05 λ0 is designed. Moreover, a transmission‐type tri‐polarization reconfigurable antenna based on MTS has been presented in Huang and Wen 24 .…”

Section: Introductionmentioning

confidence: 99%

“…Compared to conventional polarization reconfigurable antennas, the antenna based on metasurface (MTS) has acceptable balanced performances in broadband, high gain, and low profile, rapidly causing much attention. [19][20][21][22][23][24][25][26][27] Further, the polarization reconfigurable MTS antenna can follow up the position of the MTS and be classified into the transmission and reflection type, while placing the MTS upper or below the radiator, respectively. When the incident wave launches onto the transmission type MTS, the polarization of the transmissive wave will be changed.…”

Section: Introductionmentioning

confidence: 99%

Wideband and low profile multipolarization reconfigurable antenna based on metasurface

Liang

et al. 2023

Micro & Optical Tech Letters

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In this letter, a wideband and low‐profile multipolarization reconfigurable antenna based on metasurface (MTS) is proposed. The antenna mainly contains two parts, an upper layer of MTS and a bottom layer of circular slot antenna. The MTS acts as a polarization controller, by mechanically rotating the MTS layer at a proper angle while keeping the circular slot antenna remain stationary, the polarization mode of the antenna can be switched to linear polarization (LP), left‐hand circular polarization (LHCP), and right‐hand circular polarization (RHCP). The experimented −10 dB impedance bandwidth of 37.8% and 54% for LP and circular polarization (CP) modes, respectively. The measured overlapped 3‐dB AR bandwidth is 22.2% for both CP modes, covering from 3.2 to 4 GHz. Moreover, the measured peak gain of the presented antenna reaches 9 dBi and 8 dBic for LP and CP modes, with a lower profile of 0.05 λ0.

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“…14 Compared with the above methods, the characteristic mode analysis (CMA) shows the superiority in characterizing the modal resonant behavior of arbitrarily shaped objects, 15,16 especially in analyzing nonuniform MTS or small-scale MTS. 17,18 In this letter, we propose a wideband differential-fed (DF) MTS antenna array. The element of the array is designed in three steps using CMA.…”

Section: Introductionmentioning

confidence: 99%

“…There are various methods to investigate the operating mechanism of MTS antenna, including equivalent circuit method, 9 reflection coefficients calculation, 4,8 and effective medium theory 14 . Compared with the above methods, the characteristic mode analysis (CMA) shows the superiority in characterizing the modal resonant behavior of arbitrarily shaped objects, 15,16 especially in analyzing nonuniform MTS or small‐scale MTS 17,18 …”

Section: Introductionmentioning

confidence: 99%

Wideband differential‐fed metasurface antenna array using characteristic mode analysis

Huang,

Yi,

et al. 2023

Micro & Optical Tech Letters

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A wideband differential‐fed (DF) metasurface (MTS) antenna array is proposed in this letter. As the element of the proposed array, a nonuniform MTS is designed step by step using characteristic mode analysis. In the first step, a 2 × 2 rectangular patch‐based MTS is investigated. We observe that its two fundamental modes exhibit even/odd symmetric current distributions, which can be regarded as a pair of c/π modes. Unlike c mode, π mode features nonbroadside radiation, which can be reshaped by modifying MTS to an asymmetric configuration in the second step. In the last step, a direct DF method is adopted to excite c/π modes and suppress other unwanted modes for wideband performance. The optimal DF positions are quantitatively predicted by calculating the impendence bandwidth of MTS fed by virtual probes. Moreover, to further increase the gain and improve the symmetry of radiation patterns, two proposed elements are integrated into a linear array. Finally, the proposed antenna array is fabricated and measured. The measured impedance bandwidth is 22.2% (6–7.5 GHz) with broadside radiation, stable gains varying from 8.5 to 11.3 dBi, and a front‐to‐back ratio better than 19 dB.

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A Wideband Non-Uniform Metasurface-Based Circularly Polarized Reconfigurable Antenna

Cited by 33 publications

References 31 publications

Design of Low-Profile Single- and Dual-Band Antennas for IoT Applications

Design of Low-Profile Single- and Dual-Band Antennas for IoT Applications

Wideband and low profile multipolarization reconfigurable antenna based on metasurface

Wideband differential‐fed metasurface antenna array using characteristic mode analysis

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