Frequency tunable circularly polarized antenna with branch line coupler feed network for wireless applications

Muthuvel, Suresh Kumar; Choukiker, Yogesh Kumar

doi:10.1002/mmce.21784

Cited by 14 publications

(2 citation statements)

References 14 publications

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“…Due to their ability to operate over a broad frequency range, modify their geometries, and adapt to changes, reconfigurable antennas are therefore being viewed as a practical solution to cover the variety of wireless services [74][75][76][77]. There are several reconfiguration properties: frequency reconfigurability [78][79][80][81], polarization reconfigurability [82][83][84][85], pattern reconfigurability [86][87][88][89], hybrid reconfigurability [90][91][92][93], electrical diversity [94][95][96][97], optical diversity [98][99][100][101], mechanical diversity [102][103][104][105], material diversity [106][107][108][109], etc.…”

Section: Reconfigurable Antennas and Their Usage In Rf Energy Harvest...mentioning

confidence: 99%

Reconfigurable Antennas for RF Energy Harvesting Application: Current Trends, Challenges, and Solutions from Design Perspective

et al. 2023

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Due to the widespread use of low-power embedded devices in both industrial and consumer applications, research into the use of alternate energy sources has been sparked by the requirement for continuous power. Due to its accessibility and ability to be implanted, RF energy is always taken into consideration among the traditional energy sources that are currently available. There is a significant necessity for efficient RF front-ends, which must provide effective circular polarization (CP) features, effectiveness, feasibility from a design standpoint, and optimal usage of ambient RF signals accessible in the environment. So, for understanding their utilization in RF energy harvesting, a metasurface reflector-inspired CP-printed reconfigurable antenna integrated with a Greinacher voltage divider (GVD) rectifier circuit is reported. It offers broadband CP with fractional bandwidth > 25%, CP gain > 8.35 dBic, and directional radiation with the 3 dB angular beamwidth > 100° in the 3.5/5 GHz bands. With the integration of the rectifier circuit, a theoretical DC output > 4.8 V at 12 dBm is obtained. The acceptable impedance bandwidth, axial ratio bandwidth, antenna gain, antenna efficiency, and directional radiation with a 3 dB angular beamwidth value are studied and subsequently matched with the trade-offs (usage of diodes, complexity of DC biasing circuits, and attainment of polarization reconfigurability) obtained from the state of the art. A comprehensive study of the reconfigurable antennas is reported to highlight the findings as a widespread solution for these limitations in RF energy harvesting application.

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Section: Reconfigurable Antennas and Their Usage In Rf Energy Harvest...mentioning

confidence: 99%

Reconfigurable Antennas for RF Energy Harvesting Application: Current Trends, Challenges, and Solutions from Design Perspective

et al. 2023

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“…Additionally, to obtain CP radiation, the power dividing networks are added to numerous antenna designs. As a consequence of that, the performances of these antennas deteriorated on account of the spurious radiation and the inherent inductance the feed line and the probe brought 8 . To overcome this obstacle, some novel feeding methods are brought up.…”

Section: Introductionmentioning

confidence: 99%

A circularly polarized microstrip patch antenna with enhanced bandwidth based on substrate integrated waveguide techniques

Yang

Zhao

Pan

et al. 2021

Int J RF Microw Comput Aided Eng

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In this article, a circularly polarized (CP) microstrip patch antenna (MPA) is proposed. The antenna adopts a substrate integrated waveguide (SIW) cavity and a microstrip patch as the feed structure and the radiator, respectively. In consequence, the patch dominates the radiation and improves the radiation efficiency, while the asymmetric SIW cavity enhances the bandwidth and generates a pair of degenerate modes, which provide the quadrature phase shift that the CP radiation requires. By this mean, the proposed antenna not only brings up a novel feed structure for CP MPA and improves its effective bandwidth, but also circumvent the limitation of the SIW cavity slot antenna, which is low radiation efficiency.Plus, the presented antenna remains the advantages of SIW structure, including high Q factor, high integrate compatibility, and so forth. The antenna was fabricated and measured, and the presented antenna exhibits an impedance bandwidth of 12% (from 2.09 to 2.36 GHz), an axial ratio bandwidth of 7.73% (from 2.15 to 2.32 GHz) with a minimum gain of 7.89 dB. The experiment results indicate a good agreement with the simulation.

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S Band Tuned Graphene-Based Reconfigurable Antenna

Sivarama Subramanium,

Kumar Muthuvel,

Deepak

et al. 2024

Lecture Notes in Networks and Systems

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Frequency tunable circularly polarized antenna with branch line coupler feed network for wireless applications

Cited by 14 publications

References 14 publications

Reconfigurable Antennas for RF Energy Harvesting Application: Current Trends, Challenges, and Solutions from Design Perspective

Reconfigurable Antennas for RF Energy Harvesting Application: Current Trends, Challenges, and Solutions from Design Perspective

A circularly polarized microstrip patch antenna with enhanced bandwidth based on substrate integrated waveguide techniques

S Band Tuned Graphene-Based Reconfigurable Antenna

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