CP metasurfaced antennas excited by LP sources

Zhu, Hai‐Liang; Chung, Kwok L.; Sun, Xiaolei; Cheung, S. W.; Yuk, T. I.

doi:10.1109/aps.2012.6349388

Cited by 42 publications

(27 citation statements)

References 3 publications

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“…In [15,16], it was shown that the performance of a patch antenna could be enhanced significantly by placing a MS atop of it. The patch antenna (known as the source antenna) together with the MS was called MS antenna in [17,18]. In these designs, there was an air gap between the MS and the source antenna, which substantially increased the volume of the MS antenna.…”

Section: Introductionmentioning

confidence: 99%

Frequency reconfigurable slot antenna using metasurface

Zhu

Cheung

Liu

et al. 2014

The 8th European Conference on Antennas and Propagation (EuCAP 2014)

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A frequency-reconfigurable slot antenna designed using metasurface (MS) is proposed and studied. The proposed antenna is composed of a simple circular slot antenna and a circular MS with the same diameter of 50 mm and implemented using planar technology. The MS is placed directly atop the slot antenna, making the proposed antenna very compact. The MS consists of rectangular-loop unit cells placed periodically in the vertical and horizontal directions. Frequency reconfigurability of the antenna is achieved by rotating the MS around the center with respect to the slot antenna. The antenna with MS is studied, designed and optimized to operate at around 3 GHz using computer simulation. The simulated performances in terms of frequency reconfigurability and radiation pattern are presented. Index Terms-slot antenna, reconfigurable, metasurface.

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Section: Introductionmentioning

confidence: 99%

Frequency reconfigurable slot antenna using metasurface

Zhu

Cheung

Liu

et al. 2014

The 8th European Conference on Antennas and Propagation (EuCAP 2014)

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“…It is well-known that metasurface (MS) can be used in the design of planar antennas to enhance the performance [1,2]. Many different types of unit cell have been proposed in the past [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Performance enhancement of circular polarization reconfigurable monopole antenna using metasurface

Chen

Cheung

Yuk

2016

2016 10th European Conference on Antennas and Propagation (EuCAP)

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A circular polarization-reconfigurable (CPR) monopole antenna for Global Navigation Satellite System (GNSS) applications is proposed. The CPR antenna consists of two meandered monopoles denoted as MP1 and MP2, a switchable feeding network, and a metasurface (MS) using dualcap mushroom-like unit cells. The two monopoles have tapered shapes for better matching and wider impedance bandwidth. The switchable feeding network is composed of a double-pole double-throw (DPDT) switch and a 90 0 -phase shifter implemented using a λg/4-microstrip line. The DC control voltages to the DPDT switch determine if the two signals fed to MP1 and MP2 have a phase difference of 90 0 or -90 0 , hence generating a RHCP or LHCP signal, respectively. The MS consists of eight dual-cap mushroom-like unit cells and is placed at a distance of hr=0.090 from the source antenna. Simulation results show that, the MS can increase the boresight gain and the operating bandwidth from 0.4 to 6.6 dBi, and 1.46-1.79 GHz to 1.42-1.88 GHz, respectively. IndexTerms-circular polarization, metasurface, reconfigurable, monopole antenna.I.

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“…Based on the design of a metamaterial reflective surface presented in [15], analogous metasurface whose unit cell consists of a rectangular loop with a diagonal microstrip was placed close to a source antenna to convert the linearly polarized signal generated from the source into a circularly polarized one [16,17]. Broadband circular and linear polarization conversion has been reported by using thin birefringent reflective metasurfaces, which are composed of two orthogonal I-shaped structures placed on a substrate with a grounded sheet [18].…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, we intend to utilize the metasurface proposed in [5], which was in fact the shear deformation of that used in [10,[15][16][17], to design a circularly polarized antenna and mainly focus on the wide AR beamwidth and RCS reduction performances. In order to make the designed antenna work in C-band for satellite communications, the geometrical parameters of the metasurface used in [5] are redesigned.…”

Section: Introductionmentioning

confidence: 99%

A Circularly-Polarized Metasurfaced Dipole Antenna With Wide Axial-Ratio Beamwidth and RCS Reduction Functions

Chen¹,

Li²,

Liu³

et al. 2015

PIER

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Abstract-A new circularly-polarized metasurfaced dipole antenna (MSDA) with wide axial-ratio (AR) beamwidth and radar cross section (RCS) reduction properties is proposed and studied in this paper. This antenna is a quite simple half-wavelength linear dipole right above a metasurface which consists of 9 double-head arrow-shaped unit cells arranged in a 3×3 layout. By cautiously choosing the geometrical parameters of the metasurface and tuning the distance between the dipole and the metasurface, the whole structure turns out to be a circularly-polarized antenna with RCS reduction feature. Simulation results show that the MSDA in circular polarization achieves an operating bandwidth of 410 MHz and a wide AR beamwidth of 123 • and 90 • in ϕ = 0 • and ϕ = 90 • planes respectively, together with a maximum RCS reduction of 10.4 dB in the whole operating band.

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CP metasurfaced antennas excited by LP sources

Cited by 42 publications

References 3 publications

Frequency reconfigurable slot antenna using metasurface

Frequency reconfigurable slot antenna using metasurface

Performance enhancement of circular polarization reconfigurable monopole antenna using metasurface

A Circularly-Polarized Metasurfaced Dipole Antenna With Wide Axial-Ratio Beamwidth and RCS Reduction Functions

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