Study on Circularly Polarized Patch Antenna With Asymmetric Chiral Metamaterial

Hu, Yanwen; Wang, Yu; Liang, Le; He, Yingda; Chen, Weirong; Yan, Zhongming

doi:10.1109/lawp.2018.2822820

Cited by 12 publications

(4 citation statements)

References 14 publications

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“…Due to this orientation, CMM produces two important characteristics. One is the circular dichroism property [15], and the other is optical activity [16]. Circular dichroism property provides different absorptions to right hand circularly polarized (RHCP) and left hand circularly polarized (LHCP) radiated waves when it passes through chiral metamaterial.…”

Section: The Physical Properties Of Chiral Metamaterialsmentioning

confidence: 99%

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Design of Circular Polarized Antenna Using Gammadion Chiral Metamaterial as Linear-to-Circular Polarization Transformer

Kaur¹,

Prajapati²

2020

PIER M

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The application of gammadion chiral metamaterial for converting linearly polarized waves to circularly polarized waves is presented in this paper. First of all, a traditional rectangular microstrip patch antenna has been designed at resonance frequency of 5.15 GHz, which gives linear polarization. The linearly polarized waves are allowed to feed gammadion chiral metamaterial, which is placed at a height of 33 mm above the reference antenna. The gammadion chiral metamaterial produces two special effects that are responsible for polarization rotation: circular dichroism and optical activity. As a result of these effects, the necessary conditions for circularly polarized radiation are fulfilled, and linear antenna is converted to the circularly polarized antenna. This method gets rid of designing of complicated feeding structure that is necessary for circular polarization. The role of gammadion chiral metamaterial to convert linear polarization to circular polarization has been described. The antenna is fabricated, and the measurement of return loss, axial ratio, radiation patterns, etc. is also carried out. Simulation and measurement results agree with each other.

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Section: The Physical Properties Of Chiral Metamaterialsmentioning

confidence: 99%

“…The transmission coefficients of incident wave passing through CMM depend on the polarization. Chiral metamaterial has optical activity and circular dichroism effect as per the relationship [16] given below,…”

Section: The Physical Properties Of Chiral Metamaterialsmentioning

confidence: 99%

Design of Circular Polarized Antenna Using Gammadion Chiral Metamaterial as Linear-to-Circular Polarization Transformer

Kaur¹,

Prajapati²

2020

PIER M

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“…Recently, it has been shown that extreme control of EM fields can be achieved with metamaterials [6][7][8][9][10][11][12][13][14][15][16]. Metamaterial is a new type of artificial composite EM materials whose dielectric constant and permeability can be artificially designed and controlled.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric transmission modular design via direction-dependent absorption of spoof surface plasmon polaritons

Qiu

Wang

et al. 2023

J. Phys. D: Appl. Phys.

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A method of achieving asymmetric transmission is proposed by means of the propagation direction-dependent absorption of spoof surface plasmon polaritons. In this letter, trapezoidal wire arrays which act as absorbers have been combined with cutting metal wires which act as polarization rotators. By combining trapezoidal wire arrays with polarization rotators, metamaterial can exhibit different properties according to the direction of incident wave, thereby achieving asymmetric transmission. Incident waves can be efficiently converted to the spoof surface plasmon polaritons by trapezoidal wire arrays, and their propagation and/or absorption can be controlled by engineering the spatial dispersion of k-vector. Moreover, polarization rotators based on cutting metal wires can customize the polarization rotation performance by changing the length of the metal wire. The simulated results and measured results verify the asymmetric transmission effect and design method. The proposed asymmetric transmission structure can be applied in electromagnetic devices for linearly polarized wave or polarization control. Compared with chiral metamaterial structures, this work improves the design customizability and efficiency as well as provides an alternative method of designing asymmetric transmission. In addition, the framework expands the application prospect of asymmetric transmission and builds a bridge from spoof surface plasmon polaritons to asymmetric transmission, facilitating the asymmetric transmission integrated with other spoof surface plasmon polaritons devices.

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“…Guirong Feng et al [16] have presented a broadband surface wave antenna using a non-uniform tapered microstrip antenna with smaller inner rectangular patches on dielectric substrate and achieved a wide BW of 33.1% (4.56GHz-6.37GHz) for a low profile antenna of 0.06λ0 and has an average gain of 6.34dBi. Yanwen Hu et al [17] have tried to improve the gain and directivity of linear polarized antenna by placing a chiral metamaterial board of 5x5 unit cells in front of LP patch antenna to convert to circular polarization. Shobhit Kumar Patel et al [18] have proposed metamaterial inspired microstrip patch antenna having the capability of tuning the frequency spectrum and beam radiation.…”

Section: Introductionmentioning

confidence: 99%

Performance Enhancement of Metamaterial Loaded Micro Strip Patch Antenna Design Using Gallium Doped Ba-Sr Hexagonal Ferrite as Substrate Material for X-band Applications

Rani¹,

bhatia²,

Singh³

et al. 2021

Preprint

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An experimental study of microstrip patch antenna designed and fabricated on FR4 epoxy substrate is presented. Further a performance comparison of designed antenna is made with proposed design using Gallium doped Ba-Sr hexagonal ferrite substrate. Microstrip feed line is used for inputting the signal to antenna. The whole simulation is done on HFSS simulator (version 13.0).The center frequency for proposed antenna is 10GHz and is optimized for significant performance parameters viz return loss, bandwidth, VSWR and gain. It was observed that the designed antenna provides better results with ferrite substrate as compared to FR4 epoxy substrate showing -10db broad bandwidth of 4.2GHz in the frequency region 8.2GHz to 12.4GHz. Although, the results of other parameters like return loss, VSWR and gain are found to be optimum with FR4 substrate as compared to mentioned ferrite substrate. The prototype of proposed antenna with FR4 epoxy substrate is fabricated and tested to attain the experimental results. The measured results are found to be better than simulated results. Thus the proposed antenna structure can be considered suitable for microwave communication application in X-band.

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Study on Circularly Polarized Patch Antenna With Asymmetric Chiral Metamaterial

Cited by 12 publications

References 14 publications

Design of Circular Polarized Antenna Using Gammadion Chiral Metamaterial as Linear-to-Circular Polarization Transformer

Design of Circular Polarized Antenna Using Gammadion Chiral Metamaterial as Linear-to-Circular Polarization Transformer

Asymmetric transmission modular design via direction-dependent absorption of spoof surface plasmon polaritons

Performance Enhancement of Metamaterial Loaded Micro Strip Patch Antenna Design Using Gallium Doped Ba-Sr Hexagonal Ferrite as Substrate Material for X-band Applications

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