A nonuniform metasurface loaded circularly polarized differentially-fed antenna

Qu, Meijun; Li, Shufang

doi:10.1080/02726343.2019.1675441

Cited by 3 publications

(2 citation statements)

References 17 publications

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“…Then, in recent work, an increasing number of non-uniform MSs have been used in the design of CP antennas due to their flexible control of phase correction, resulting in improved radiated performance [ 13 , 14 , 15 ]. In our previous work [ 16 ], we proposed a nonuniform MS design consisting of a corner-cut slotted patch at the center and 45° oblique slotted square patches surrounding it as a radiator, which then achieved significantly improved gain and bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Wideband Circularly Polarization and High-Gain of a Slot Patch Array Antenna Realized by a Hybrid Metasurface

Chen,

Yang,

et al. 2024

Sensors

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In this paper, a patch array antenna with wideband circular polarization and high gain is proposed by utilizing a hybrid metasurface (MS). A corner-cut slotted patch antenna was chosen as the source due to the possible generation of CP mode. The hybrid MS (HMS), consisting of a receiver MS (RMS) arranged in a 2 × 2 array of squared patches and a linear-to-circular polarization conversion (LCPC) MS surrounding it was then utilized as the superstrate driven by the source. The LCPC MS cell is a squared-corner-cut patch with a 45° oblique slot etched, which has the capability for wideband LCPC. The LCPC unit cell possesses wideband PC capabilities, as demonstrated by the surface current analysis and S-parameter simulations conducted using a Floquet–port setup. The LP EM wave radiated by the source antenna was initially received by the RMS, then converted to a CP wave as it passed through the LCPC MS, and ultimately propagated into space. To further enhance the LCPC properties, an improved HMS (IHMS) was then proposed with four cells cut at the corners, based on the original HMS design. To verify this design, both CMA and E-field were utilized to analyze the three MSs, indicating that the IHMS possessed a wideband LCPC capability compared to the other two MSs. The proposed antenna was then arranged in a 2 × 2 array with sequential rotation to further enhance its properties. As demonstrated by the measurements, the array antenna achieved an S11 bandwidth of 60.5%, a 3 dB AR bandwidth of 2.85 GHz, and a peak gain of 15.1 dBic, all while maintaining a low profile of only 0.09λ0.

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Section: Introductionmentioning

confidence: 99%

Wideband Circularly Polarization and High-Gain of a Slot Patch Array Antenna Realized by a Hybrid Metasurface

Chen,

Yang,

et al. 2024

Sensors

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show abstract

“…It is noted that non-uniform MS has been used before, but mostly to extend the LP bandwidth [21]- [24] while achieving a large CP bandwidth is more challenging. Although a non-uniform MS was used for CP antennas in [25,26], the mechanism for BW enhancement is not explained. In addition, these designs only operate in a single polarization state, right-hand CP (RHCP) or left-hand CP (LHCP).…”

Section: Introductionmentioning

confidence: 99%

A Wideband Non-Uniform Metasurface-Based Circularly Polarized Reconfigurable Antenna

et al. 2021

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This paper presents a low-profile circularly polarized (CP) antenna with wideband and polarization-reconfigurable characteristics. The proposed antenna consists of a truncated-corner patch working as a CP source and a non-uniform metasurface (MS) acting as parasitic elements for performance enhancement. The non-uniform MS is utilized to produce additional operating bands in the higher frequency range, which are then combined with the lower band produced by the driven patch to significantly broaden the overall operating bandwidth. The polarization switching mechanism is based on the ON/OFF states of two p-in diodes. The fabricated prototype shows the measured overlapped bandwidth between-10 dB impedance and 3-dB axial ratio is 25.6% and peak broadside gain is 7.3 dBic.

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A shorting post loaded symmetric non-uniform metasurface antenna for broadband circular polarization

Pani,

Panda,

Naik

et al. 2024

AEU - International Journal of Electronics and Communications

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A nonuniform metasurface loaded circularly polarized differentially-fed antenna

Cited by 3 publications

References 17 publications

Wideband Circularly Polarization and High-Gain of a Slot Patch Array Antenna Realized by a Hybrid Metasurface

Wideband Circularly Polarization and High-Gain of a Slot Patch Array Antenna Realized by a Hybrid Metasurface

A Wideband Non-Uniform Metasurface-Based Circularly Polarized Reconfigurable Antenna

A shorting post loaded symmetric non-uniform metasurface antenna for broadband circular polarization

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