Multi-State Reconfigurable Antenna for Wireless Communications

Priya, A.; Mohideen, S. Kaja; Saravanan, Manavalan

doi:10.1007/s42835-019-00321-8

Cited by 9 publications

(4 citation statements)

References 11 publications

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“…The driven element or the centre rectangular patch has a width of Xp mm and a length of Yp mm. The width and length were first calculated using the rectangular patch fundamental equations provided in [8]- [10] for a center frequency of 3.5 GHz. Besides that, the PIN diode (BAR 50-02V) is used as a switching element to implement electronic reconfigurability.…”

Section: A Radiation Pattern Reconfigurable (Rpr) Antennamentioning

confidence: 99%

Radiation Pattern Reconfigurable MIMO Antenna With Practical DC Bias Network

Gopalakrishnan

Sabapathy

Jusoh

et al. 2022

2022 IEEE Region 10 Symposium (TENSYMP)

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This paper presents a radiation pattern reconfigurable (RPR) based multiple-input multiple-output (MIMO) antenna. The proposed antenna operates at 3.5 GHz for all switching conditions with S21 results of less than -20 dB. This work specifically focuses on implementing a practical DC bias network for the previously proposed RPR-MIMO antenna. The DC bias design is crucial where the tilt angle is slightly affected. This could be due to the isolation loss and insertion loss provided by the actual switch; and the DC bias lines that were constructed using a few DC blocking capacitors and RF chokes. Finally, a comprehensive analysis was carried out to examine the beam steering performance of the antenna when implemented with the DC bias network.

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Section: A Radiation Pattern Reconfigurable (Rpr) Antennamentioning

confidence: 99%

Radiation Pattern Reconfigurable MIMO Antenna With Practical DC Bias Network

Gopalakrishnan

Sabapathy

Jusoh

et al. 2022

2022 IEEE Region 10 Symposium (TENSYMP)

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“…[20] To further improve the electrochemical properties of the IEM, porous carbon nanomaterials have been used for electrode de-velopment along with polymer-based materials. [2,19,21,22] Carbonbased materials such as activated carbon (AC), carbon aerogel, CNTs, graphene, among others exhibit superior electrochemical properties and thus can be effectively used as adsorbing agents for water treatment. [23,24] AC is the most common electrode material, which is abundantly used in (M)CDI due to its high specific surface area and porosity, which make it an excellent adsorbent.…”

Section: Introductionmentioning

confidence: 99%

Development of Composite Nanostructured Electrodes for Water Desalination via Membrane Capacitive Deionization

Bakola,

Kotrotsiou,

Ntziouni

et al. 2024

Macromol. Rapid Commun.

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Novel two‐layer nanostructured electrodes were successfully prepared for their application in membrane capacitive deionization (MCDI) processes. Nanostructured carbonaceous materials such as graphene oxide (GO) and carbon nanotubes (CNTs), as well as activated carbon (AC) were dispersed in a solution of poly(vinyl alcohol) (PVA), mixed with polyacrylic acid (PAA) or polydimethyldiallylammonium chloride (PDMDAAC), and subsequently cast on the top surface of an activated carbon‐based modified graphite electrode to form a thin composite layer that was cross‐linked with glutaraldehyde (GA). Cyclic Voltammetry (CV) was performed to investigate the electrochemical properties of the composite electrodes and desalination experiments were conducted in batch mode using a MCDI unit cell to investigate the effects of i) the nanostructured carbonaceous material, ii) its concentration in the polymer blend, and iii) the molecular weight of the polymers on the desalination efficiency of the system. Comparative studies with commercial membranes were performed proving that the composite nanostructured electrodes were more efficient in salt removal. The improved performance of the composite electrodes was attributed to the ion exchange properties of the selected polymers and the increased specific capacitance of the nanostructured carbonaceous materials. This research paves the way for wider application of MCDI in water desalination.This article is protected by copyright. All rights reserved

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“…The reconfigurability of antenna properties has attracted the attention of researchers in the field of wireless communications, especially in mobile and satellite applications (Haider et al 2013;Priya 2020;Ojaroudi Parchin et al 2020;Costantine et al 2014). The most popular antenna parameters that can be reconfigured are the operating frequencies, radiation pattern, and polarization (Shakhirul et al 2018), (Costantine et al 2015).…”

Section: Introductionmentioning

confidence: 99%

High-gain reconfigurable polarization antenna based on metamaterial array for Terahertz applications

2023

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This paper suggestsproposes a high-gain reconfigurable polarization antenna using a metasurface polarizaer. The metasurface polarizer is a rectangular array that consists of similar 25 unit-cell elements. Each metamaterial (MM) unit-cell element consists of a circular copper patch attached to two copper arrow-shaped strips installed at its circumference. The circular patch and two arrows are installed between a rectangular superstrate at the top and a rectangular substrate at the bottom, which is backed with a perfect electric conductor with a relative permittivity of εsub = 3.38. The MM characteristics are obtained in a wide range of frequencies from 1.4 to 2.1 THz. The metasurface polarizer array is installed at an optimized height of 25 μm under a linear polarized dipole antenna that operates at 1.81 THz with a bandwidth (BW) of 0.2 THz from 1.75 to 1.95 THz (11.05%, − 10 dB BW) and gain of 2.27 dBi. The incident-plane wave from the antenna can be converted into a reconfigurable left- or right-hand circular polarization according to the directions of the arrow of the MM unit-cell element. Moreover, the operating − 10-dB BW of the dipole antenna increases to 30.93%, and the gain is enhanced to 6.18 dBi at the same operating frequency. A reconfigurable polarization conversion for the dipole antenna can be obtained over wide 3-dB axial ratio BW from 1.45 to 1.95 THz (33.3% BW).

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Multi-State Reconfigurable Antenna for Wireless Communications

Cited by 9 publications

References 11 publications

Radiation Pattern Reconfigurable MIMO Antenna With Practical DC Bias Network

Radiation Pattern Reconfigurable MIMO Antenna With Practical DC Bias Network

Development of Composite Nanostructured Electrodes for Water Desalination via Membrane Capacitive Deionization

High-gain reconfigurable polarization antenna based on metamaterial array for Terahertz applications

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