Bandwidth Improvement in Bow-Tie Microstrip Antennas: The Effect of Substrate Type and Design Dimensions

Awl, Halgurd N.; Abdulkarim, Yadgar I.; Deng, Lianwen; Bakır, Mehmet; Muhammadsharif, Fahmi F.; Karaaslan, Muharrem; Ünal, Emın; Luo, Hang

doi:10.3390/app10020504

Cited by 28 publications

(15 citation statements)

References 24 publications

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“…In this paper, novel CP antennas are proposed based on probe-fed printed dipole antennas [28,29] and a metasurface ground. The reflective metasurface, which is able to rotate the linear polarization of incident waves by 90 • and provide a designated reflection phase, has been used as the ground plane.…”

Section: Introductionmentioning

confidence: 99%

Novel Single/Dual Circularly Polarized Antennas Based on Polarization-Conversion Reflective Metasurfaces

Ge¹

2021

PIER C

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We propose single/dual circularly-polarized (CP) antennas based on reflective metasurfaces with cross-polarization conversion. By suspending a probe-fed printed bow-tie dipole or a crossed bowtie dipole above the reflective polarization-conversion metasurface and appropriately tuning the distance between them, a single-CP or a dual-CP antenna is generated. The theoretical design principle on this novel CP antenna structure has been discussed. Simulations and experiments are conducted to validate the design principle. The measured results show that the proposed single-CP antenna has achieved a 3-dB axial ratio (AR) bandwidth of 8.0%, from 12.67 to 13.72 GHz, and a peak gain of 8.03 dBi, while the dual-CP antenna exhibits a dual-CP AR bandwidth of 7.1%, from 13.09 to 14.05 GHz, and peak gains of 8.49 dBi and 7.03 dBi for left-handed circular polarization (LHCP) and right-handed circular polarization (RHCP), respectively. The measured isolation between the two ports of the dual-CP antenna is less than −20 dB. The operating frequency of the proposed antennas can be easily scaled to other frequencies that are applied to some specific wireless applications.

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Section: Introductionmentioning

confidence: 99%

Novel Single/Dual Circularly Polarized Antennas Based on Polarization-Conversion Reflective Metasurfaces

Ge¹

2021

PIER C

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“…Motivated by the bandwidth and gain limitation of patch antennas, different approaches were reported by researchers with the aim of tackling this issue [6][7][8][9]. In this way, metasurface-based microstrip antennas were introduced as an alternative approach to improve the conventional microstrip antennas.…”

Section: Introductionmentioning

confidence: 99%

A Low-Profile Antenna Based on Single-Layer Metasurface for Ku-Band Applications

Abdulkarim

Awl

Muhammadsharif

et al. 2020

International Journal of Antennas and Propagation

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Improvement in the antenna gain is usually achieved at the expense of bandwidth and vice versa. This is where the realization of this enhancement can be made through compromising the antenna profile. In this work, we propose a new design of incorporating periodic metasurface array to enhance the bandwidth and gain while keeping the antenna to a low-profile scheme. The proposed antenna was simulated and fabricated in order to validate the results in the operating frequency range from 10 MHz to 43.5 GHz. Computer simulation technology (CST) microwave studio software was used to design and simulate the proposed antenna, while LPKF prototyping PCB machine was utilized to fabricate the antenna. Results showed that the antenna generated a gain and bandwidth of 14.2 dB and 2.13 GHz, respectively. Following the good agreement between the numerical and measurement results, it is believed that the proposed antenna can be potentially attractive for the application of satellite communications in Ku-band electromagnetic wave.

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“…In past studies, researchers tried to enhance the key performance parameters of the CPA by incorporating the various approaches [5][6][7][8]. Besides, several designs based on different shapes of slots [9][10][11][12], radiators [13][14][15][16], and ground plane [17,18] have been proposed to attain the substantial peak realized gain, good radiation efficiency, and acceptable impedance BW along with perfect matching performance. e investigated antennas have complex designs and analyzed results were optimal with a trade-off between the BW, peak gain, radiation efficiency, and compact dimensions.…”

Section: Introductionmentioning

confidence: 99%

A Compact High-Gain Coplanar Waveguide-Fed Antenna for Military RADAR Applications

Dayo

Cao

Wang

et al. 2020

International Journal of Antennas and Propagation

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This paper presents a new design of a compact, high-gain coplanar waveguide-fed antenna and proposes a multielement approach to attain enhanced characteristics. The proposed method overcomes the simulation and geometrical complexity and achieves optimal performance features. The antenna prototype is carefully designed, and simulation results have been analyzed. The proposed antenna was fabricated on a new WangLing TP-2 laminate with dimensions (0.195λ × 0.163λ × 0.0052λ) at the lowest resonance of 9.78 GHz. The results have been tested and experimentally verified. The antenna model achieved excellent performance including a peak realized gain better than 9.0 dBi, optimal radiation efficiency better than 87.6% over the operating band, and a good relative bandwidth of 11.48% at 10 dB return loss. Symmetrical stable far-field radiation pattern in orthogonal planes and strong distribution of current are observed. Moreover, a comparative analysis with state-of-the-artwork is presented. The measured and simulation result shows a good agreement. The high-performance antenna results reveal that the proposed model is a good contender of military airborne, land, and naval radar applications.

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Bandwidth Improvement in Bow-Tie Microstrip Antennas: The Effect of Substrate Type and Design Dimensions

Cited by 28 publications

References 24 publications

Novel Single/Dual Circularly Polarized Antennas Based on Polarization-Conversion Reflective Metasurfaces

Novel Single/Dual Circularly Polarized Antennas Based on Polarization-Conversion Reflective Metasurfaces

A Low-Profile Antenna Based on Single-Layer Metasurface for Ku-Band Applications

A Compact High-Gain Coplanar Waveguide-Fed Antenna for Military RADAR Applications

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