Realization of polarization adjusting in reconﬁgurable graphene-based microstrip antenna by adding leaf-shaped patch

Kiani, Narges; Hamedani, Farzad Tavakkol; Rezaei, Pejman

doi:10.1016/j.micrna.2022.207322

Cited by 17 publications

(11 citation statements)

References 18 publications

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“…Rep 2021 [ 34 ] 109 (0.19–0.2 THz) 5.12 12.2 1.05 86 Sci. Rep 2021 [ 35 ] 0.048 (0.5–0.7 THz) 33.33 5 1.4 50 Micro and Nanostructures 2022 This work 0.13 (0.362–0.591 THz) 47.98 4 1.63 93 J. Opt …”

Section: Analysis and Discussion On The Resultsmentioning

confidence: 99%

On-chip coronavirus shape antenna for wide band applications in terahertz band

Kiani

Rezaei

Fakhr

2023

J Opt

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In this paper, a novel compact planar coronavirus antenna is proposed for wide band applications. In the design of this antenna, the idea of the radiating part has been taken from the 3-D model of the coronavirus, which is fed by a 50 Ω coplanar waveguide. The patch structure and the feed line of the proposed antenna, which have been made of gold, are located on a polyamide substrate with a thickness and dielectric constant of 45 µm and 3.5, respectively, and the antenna has compact physical dimensions of 300 × 300 µm 2 . The simulation results of the antenna have been analyzed in terms of S 11 , VSWR, radiation pattern, gain and surface current distribution. The designed antenna covers the frequency band from 0.3627 to 0.5918 THz for S 11 ≤ − 0 dB with a fractional bandwidth of > 47.98% and with a bandwidth ratio of 1.63:1. This extended bandwidth coverage allows the antenna to be suitable for a wide range of applications including wireless communications, internet of things, wearable devices, on-chip antennas and multiple-input multiple-output systems. Also, the results of the far-field show an omnidirectional radiation pattern with an average gain and efficiency of 4 dBi and 93% throughout the frequency band, respectively.

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Section: Analysis and Discussion On The Resultsmentioning

confidence: 99%

On-chip coronavirus shape antenna for wide band applications in terahertz band

Kiani

Rezaei

Fakhr

2023

J Opt

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“…Increasing the speed of communication: With the ability to change the shape and adjust, this antenna can optimize radio waves and increase the speed of communication in 5G networks. This significantly improves user experience and data transfer [6][7][8][9][10][11]. 2.…”

Section: Introductionmentioning

confidence: 99%

Graphene-based quad-port MIMO reconfigurable antennas for SATCOM and 5G applications

Kiani

Hamedani

Rezaei

2023

Preprint

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In this research, two graphene-based THz patch antenna structures for satellite communication and 5G applications is reported. In the unit cell analysis, it can be pointed out that the patch is made of graphene and the substrate is made of silicon dioxide. While its dielectric permittivity is 3.7. The operating frequency of the MIMO antenna is designed at 0.6 THz. In the plan of MIMO reconfigurable antenna, cells are arranged vertically. Reconfigurable conditions can be achieved by changing the chemical potential or in other words the bias voltage of graphene patches. The amount of chemical potential in the original project of both quad-port MIMO reconfigurable antennas is considered to be 0.6 eV. In the results of the first antenna, S11 is less than -10 dB in the range of 0.58786 THz through 0.63112 THz. In the results of the second antenna, S11 is less than -10 dB in the range of 0.57814 THz through 0.63391 THz. In the results of the first antenna, maximum efficiency is reported about 65%. In the results of the second antenna, maximum efficiency is reported about 72%. Finally, peak realized gains, radiation efficiencies, far-field 2D radiation patterns, VSWRs, current distributions, envelope correlation coefficients (port1-port2, port1-port3, port1-port4), and diversity gains (port1-port2, port1-port3, port1-port4) have all been reported over the operating frequency band for two antennas.

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“…[10][11][12][13][14][15] When compared to other conventional manufacturing techniques, this technology has many benefits including cheap cost, lower risk, faster production, modifiability, and a wider range of material options. [7,[16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] Li et al [31] developed a novel selectively metallizable SLA resin for antenna construction employing additive manufacturing methods such as chemical procedures and 3D printing technologies in their research. Results indicated that the antennas were appropriate for use in high-frequency devices with complex geometries, such as 3D microwave/millimeterwave devices.…”

Section: Introductionmentioning

confidence: 99%

“…Various materials exist, including polymers, ceramics, metals, and concrete, with different properties such as elastic, waterproof, shockproof, or resistant to high temperatures [10–15] . When compared to other conventional manufacturing techniques, this technology has many benefits including cheap cost, lower risk, faster production, modifiability, and a wider range of material options [7,16–30] …”

Section: Introductionmentioning

confidence: 99%

Electromagnetic and Chemical Analysis and Performance Comparison of Inset‐fed Rectangular Microstrip Antennas

et al. 2023

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A simple method for creating lightweight and inexpensive microstrip patch antennas using reduced graphene oxide or acetylene black added epoxy resin was developed. The biggest goal in the method is optimizing the appropriate chemicals and production processes for producing the materials with the designed properties. Five examples of an inset‐fed microstrip patch antenna operating at approximately 2.0–12.0 GHz were designed based on the antenna‘s basic analytical formula. Their models were created in a 3D electromagnetic simulation environment. After examining the performance results of the design, the appropriate design models were produced with both 3D printer technology and wet‐chemical methods, and the experimental results were compared with the simulation results. The produced reduced graphene oxide or acetylene black added samples′ structure was illuminated with scanning electron microscope images, FTIR and Raman spectroscopy analysis. The measured S11 characteristics of the antennas provide better performance as compared to the simulated results. The measured S11 parameters for the two and three frequency bands fell substantially below −10 dB. As a result of the dielectric constants of the materials and the fabrication of the radiation plane, horizontal shifts were detected in the measurement outcomes.

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Realization of polarization adjusting in reconﬁgurable graphene-based microstrip antenna by adding leaf-shaped patch

Cited by 17 publications

References 18 publications

On-chip coronavirus shape antenna for wide band applications in terahertz band

On-chip coronavirus shape antenna for wide band applications in terahertz band

Graphene-based quad-port MIMO reconfigurable antennas for SATCOM and 5G applications

Electromagnetic and Chemical Analysis and Performance Comparison of Inset‐fed Rectangular Microstrip Antennas

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