A Broadband Circularly Polarized Single-Layer Metasurface Antenna Using Characteristic-Mode Analysis

Yousfi, Ahmed El; Lamkaddem, Abdenasser; Abdalmalak, Kerlos Atia; Segovia-Vargas, Daniel

doi:10.1109/tap.2023.3239104

Cited by 24 publications

(7 citation statements)

References 44 publications

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“…However, it also suffers from a complicated feed network and large dimensions. In [28], a single-layered metasurface CP patch antenna achieves narrow IBW and ARBW. In [29], a rectangular-ring-shaped metasurface CP patch antenna has very narrow IBW and ARBW.…”

Section: Resultsmentioning

confidence: 99%

Broadband Multi-Shaped Metasurface Circularly Polarized Antenna With Suppressed Non-CP Radiation Modes

Supreeyatitikul,

Lertwiriyaprapa,

Chudpooti

et al. 2023

IEEE Open J. Antennas Propag.

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In this research, a multi-shaped metasurface broadband circularly polarized (CP) patch antenna with parasitic elements is proposed for 5G new radio (NR) applications. The proposed metasurface CP patch antenna comprises triple-layered substrates without air gap. The upper layer sits with multi-shaped metasurface elements and parasitic patches. The middle layer consists of an L-shaped slot functioning as the ground plane, and the lower layer contains a microstrip and a fan-shaped stub functioning as the feed line. The proposed metasurface CP patch antenna with parasitic elements is evaluated using characteristic mode analysis (CMA). The CMA results indicate that the modal significance of Modes 1 and 2 of the multi-shaped metasurface CP antenna are orthogonal, giving rise to circular polarization. The non-CP radiation of Modes 3 and 4 are suppressed by using the multi-shaped metasurface elements and parasitic patches. The measured impedance bandwidth and axial ratio bandwidth are 42.85% (3.4 -4.9 GHz) and 38% (3.27 -4.6 GHz), achieving the maximum gain of 7.23 dBic at 3.7 GHz. The experiments demonstrate that the multi-shaped metasurface CP patch antenna with parasitic elements is suitable for 5G NR wireless applications. The novelty of this study is attributed to its utilization of multi-shaped metasurface elements and parasitic patches, which effectively suppress non-circularly polarized radiation modes.INDEX TERMS Characteristic mode analysis, impedance, metasurfaces, patch antennas, substrates.

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Section: Resultsmentioning

confidence: 99%

Broadband Multi-Shaped Metasurface Circularly Polarized Antenna With Suppressed Non-CP Radiation Modes

Supreeyatitikul,

Lertwiriyaprapa,

Chudpooti

et al. 2023

IEEE Open J. Antennas Propag.

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“…A high-gain array antenna for circular polarization that used sequential phase feed and implemented on the Rogers RO4003 substrate to have an impedance bandwidth of 5.5 GHz (1.8-7.3 GHz), a gain of 9.7 dB, and a lower antenna e ciency of 75% [29]. Ahmed El Yous et al presented a low-pro le single-layer coplanar waveguide (CPW) fed metasurface (MTS) antenna operating at 5.8 GHz, featuring broadband circular polarization radiation with a 3 × 4 MTS con guration, achieving an impedance bandwidth of (4.870-6.26) GHz, an axial ratio bandwidth of (5.30-6.44) GHz, a gain of 8 dB, and high radiation e ciency of 96% [30]. Circular polarization was successfully demonstrated on a wearable substrate with dimensions of (0.62 × 0.62 × 0.073) λ3, getting an antenna e ciency of 94.69%, a gain of 7.6 dB, an impedance bandwidth of 610 MHz (5.45-6.06) GHz, and ARBW of 420 MHz (5.48-5.9) GHz [31].…”

Section: Related Workmentioning

confidence: 99%

Performance Enhancement of Circularly Polarized Microstrip Antenna Using Single-Layer Foam Substrate for 5.8 GHz ISM Band Applications

Hake,

Jaiswal,

Moon

2024

Preprint

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Since last decade microstrip patch antenna has played a very important role in industrial, scientific, and medical (ISM) band applications, but single-layer antennae suffer from low gain, low radiation efficiency. For an ISM band, there is always a trade-off between these parameters, so maintaining it on a single-layer microstrip antenna is a big challenge. Hence this paper designs a circularly polarized (CP) microstrip antenna using a single-layer Foam Substrate for 5.8 GHz ISM band which offers high gain, improved radiation efficiency, and a lightweight design. It is constructed as a low-profile, single coaxial feed microstrip antenna on a foam substrate, achieving circular polarization by integrating two slots into the radiating patch antenna has dimensions of 0.98 λ0 × 0.98 λ0 × 0.096 λ0, impedance bandwidth of 600 MHz (5.56–6.16) GHz, which underscores its adaptability across a wide range of frequencies within the specified band. Furthermore, it elaborates the axial ratio bandwidth which extends over 130 MHz (5.77–5.90) GHz, showing the antenna's ability to maintain circular polarization characteristics over a significant frequency range with a gain of 8.87 dB. The experimental and simulation results confirmed a remarkable radiation efficiency of 95.62%, showing its superior effectiveness compared to any existing single-layer microstrip antenna.

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“…In addition, characteristic mode analysis (CMA) has been effectively used for antenna design and subsequently its analysis. For example, the potential application of CMA for realizing wideband antennas was reported in [13]- [15] where multiple resonances were simultaneously excited, leading to the wideband antennas. However, these proposed antennas were either linearly polarized [13]- [14] or circularly polarized with narrower impedance bandwidth i.e., 25% [15].…”

Section: Introductionmentioning

confidence: 99%

“…For example, the potential application of CMA for realizing wideband antennas was reported in [13]- [15] where multiple resonances were simultaneously excited, leading to the wideband antennas. However, these proposed antennas were either linearly polarized [13]- [14] or circularly polarized with narrower impedance bandwidth i.e., 25% [15]. Apart from single element MTS, the bandwidth and gain were improved by the use of array configurations in [19]- [22] at the expense of large size and low 3-dB axial ratio bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Compact High Gain Wideband Circularly Polarized Non-Uniform Metasurface Antenna Through Improved Mode Coupling

Iqbal,

Umar Khan,

Ahmed

2024

IEEE Open J. Antennas Propag.

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A wideband, high gain circularly polarized (CP) metasurface (MTS) based slot antenna is presented. The designed nonuniform slots provide wider bandgap regions and extra degree of freedom in tuning to obtain wider impedance bandwidth through improved mode coupling for fixed optimum feed location along with improved 3-dB axial ratio bandwidth and gain. The extra radiation edges provided by nonuniform slots within the unit cell help in improving mode coupling thus resulting in increased performance of the designed antenna. Improved mode coupling in case of the proposed antenna is explained and verified using characteristic mode analysis (CMA). The proposed antenna with a small size of 0.8 x 0.8 x 0.079 λ 3 0 (λ 0 at 6 GHz) is designed. Based on the proposed analysis, an antenna having wide impedance bandwidth of 48.74% (5.74-9.44 GHz), and a 3-dB axial ratio (AR) bandwidth of 19.92% (6.19-7.56 GHz) with a peak gain of 9.35 dBi is designed. In addition, a 2 x 2 array of proposed MTS is designed and fabricated. The MTS array has a peak gain of 14.45dBi with a 3-dB AR bandwidth of 61.75% and impedance bandwidth of 71.71%. The proposed antennas find good use in WiMAX, C-band, and radars applications.INDEX TERMS Non-uniform metasuraface, circular polarization, high gain, wideband antenna.

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A Broadband Circularly Polarized Single-Layer Metasurface Antenna Using Characteristic-Mode Analysis

Cited by 24 publications

References 44 publications

Broadband Multi-Shaped Metasurface Circularly Polarized Antenna With Suppressed Non-CP Radiation Modes

Broadband Multi-Shaped Metasurface Circularly Polarized Antenna With Suppressed Non-CP Radiation Modes

Performance Enhancement of Circularly Polarized Microstrip Antenna Using Single-Layer Foam Substrate for 5.8 GHz ISM Band Applications

Compact High Gain Wideband Circularly Polarized Non-Uniform Metasurface Antenna Through Improved Mode Coupling

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