Wideband Transparent Beam-Forming Metadevice with Amplitude- and Phase-Controlled Metasurface

Li, Haipeng; Wang, Guangming; Cai, Tong; Hou, Haisheng; Guo, Wenlong

doi:10.1103/physrevapplied.11.014043

Cited by 113 publications

(49 citation statements)

References 37 publications

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“…To further validate the diversity performance of proposed MIMO antenna, envelope correlation coefficient (ECC), channel capacity loss (CCL), and total active reflection coefficient (TARC) have been computed and analyzed for the proposed design. The value of ECC is computed using S ‐parameter based formulae as discussed in Refs., which are valid for highly efficient antenna and plotted in Figure A. The ECC obtained for proposed MIMO is within the limit of 0.01 which indicates good channel characteristics.…”

Section: Resultssupporting

confidence: 57%

Section: Introductionmentioning

confidence: 99%

“…Recently, various metasurfaces have drawn significant attention in the area of electromagnetic wave manipulation due to their flexible control of the wave front and polarization with low loss and simple fabrication. [4][5][6] Metamaterialbased designs provide electromagnetic band-gap properties that are widely implemented to enhance the MIMO antenna parameters like isolation and efficiency, although that requires a large design area between antenna elements. [7][8][9] In Refs., 10,11 periodic complementary split ring resonator (CSRR) has been used as coupled polarization transformer changes the surface current polarization to achieve lower mutual coupling and better MIMO capacity, although it utilizes 0.15λ o distance between the antenna elements at the resonating frequency.…”

Section: Introductionmentioning

confidence: 99%

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Reduced edge‐to‐edge spaced MIMO antenna using parallel coupled line resonator for WLAN applications

Mark

Singh

Mandal

et al. 2019

Micro & Optical Tech Letters

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In this paper, a pair of parasitic parallel coupled line resonators (PCLR) is printed between the two patches that reduce the mutual coupling in multiple‐input‐multiple‐output (MIMO) antenna system. The proposed design offers reduced edge‐to‐edge spacing of 3.5 mm (0.066λo, λo is the free space wavelength) at 5.7 GHz. The proposed decoupling structure of length 0.49λo and area 0.05λo × 0.49λo consists of a pair of parallel coupled lines, placed between the antenna elements and provides a band stop properties over the desired operating band that helps to eradicate the near coupled field. The PCLR decoupling structure helps to improve the isolation and bandwidth by 16 dB and 0.22 GHz, respectively, at the resonating frequency without any change in radiation characteristics of the MIMO system. Moreover, the antenna system yields a good broadside gain of 6.43 dBi, efficiency 70–85%, with acceptable channel diversity performances over the entire operating band (5.47–5.9 GHz). Good agreements between the simulated and measured results make the proposed design approach suitable for a closely packed MIMO system.

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Section: Resultssupporting

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Reduced edge‐to‐edge spaced MIMO antenna using parallel coupled line resonator for WLAN applications

Mark

Singh

Mandal

et al. 2019

Micro & Optical Tech Letters

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“…The possibility to acquire arbitrary values of effective permittivity and permeability has led to amazing functionalities like invisible cloaking and perfect lensing . To control the amplitude and phase of the incident electromagnetic wave, several metasurface‐based approaches are reported in literature . In addition to these exotic applications, metasurfaces have led to diverse applications such as absorber, polarization converter, and isolator over the past few years.…”

Section: Introductionmentioning

confidence: 99%

Dual‐band multifunctional metasurface for absorption and polarization conversion

Dutta

Mitra

Ghosh

2020

Int J RF Microw Comput Aided Eng

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In this paper, a multifunctional metasurface capable of switching between an absorber and a polarization converter is presented. The active metasurface comprises diamond‐shaped unit cells embedded with PIN diodes. The characteristic of the design lies in its capability of exhibiting multifunctionality at the same frequency of operation. The structure behaves as an absorber and linear polarization converter around 15 and 17 GHz when the PIN diode is switched ON and OFF, respectively. The working principle is demonstrated with the help of simulated results. Finally, the design is fabricated and measured, and it is seen that the results are in accordance with that of the simulated ones, establishing the concept behind switchability of absorber and polarization converter.

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“…The recent developments aim at the realization of both the wide polarization conversion bandwidth and the high polarization conversion ratio (PCR), such as the microwave reflective metasurfaces, [2][3][4] gold helix structures in optics, 17 the planar ultrathin plasmonic metasurfaces at THz frequency, 11,[19][20][21][22] and other approaches. [8][9][10][11][12][13][14][23][24][25][26][27][28][29] In addition, anisotropic frequency-selective surfaces (FSSs) 30,31 have been applied to convert linear polarization into circular polarization (LP-CP) in the microwave regime. Compared to transmissive polarization converters, the reflective ones are relatively easier to realize broadband and high-efficiency performance with smaller thicknesses.…”

Section: Introductionmentioning

confidence: 99%

High‐efficiency cross and linear‐to‐circular polarization converters based on novel frequency selective surfaces

Wang

Lin

et al. 2019

Micro & Optical Tech Letters

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Most high‐efficiency polarization converters in literatures are based on reflective structures. Here we report the designs and experiments of high‐efficiency transmissive polarization converters using novel compact frequency‐selective surfaces (FSSs). By combining the common dipole and square ring based band‐pass FSSs, a novel FSS can be generated, whose high‐efficiency pass bands and transmissive phases for two orthogonal polarizations can be tuned by changing the dimensions of the FSS structure. As demonstrations of the concept, a transmissive cross polarization converter (a half‐wave plate) and a transmissive linear‐to‐circular polarization (LP‐CP) converter (a quarter‐wave plate) are designed and tested, respectively. Simulated results show that the polarization conversion ratio over 90% for the transmissive cross‐polarization converter is from 18.5 to 23.5 GHz, about 23.8%, and the 3‐dB LP‐CP conversion bandwidth is 19.6%. Experiments are carried out to validate both designs.

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Wideband Transparent Beam-Forming Metadevice with Amplitude- and Phase-Controlled Metasurface

Cited by 113 publications

References 37 publications

Reduced edge‐to‐edge spaced MIMO antenna using parallel coupled line resonator for WLAN applications

Reduced edge‐to‐edge spaced MIMO antenna using parallel coupled line resonator for WLAN applications

Dual‐band multifunctional metasurface for absorption and polarization conversion

High‐efficiency cross and linear‐to‐circular polarization converters based on novel frequency selective surfaces

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