Bandwidth-Enhanced Circularly Polarized Crescent-Shaped Slot Antenna via Circular-Patch Loading

Trinh-Van, Son; Yang, Youngoo; Lee, Kang-Yoon; Kim, Yong Serk; Hwang, Keum Cheol

doi:10.3390/app9061117

Cited by 6 publications

(4 citation statements)

References 17 publications

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“…An embedded island is placed inside the rectangular slot as shown in Figure 3(a) for reflection coefficient |S 11 |, bandwidth, and size improvement [21][22][23][24]. The slot antenna is fed by a microstrip feedline at the bottom layer as shown in Figure 3(b).…”

Section: Rectangular Slot With Embedded Island and Rectangular Feedli...mentioning

confidence: 99%

A Small Size Wideband M-shaped Polygonal Slot Antenna for X-band Satellite Applications

Rabie,

El-Gendy,

El Damak

et al. 2024

PIER C

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This paper presents a small size M-shaped polygonal slot antenna for X-band satellite telemetry and Synthetic Aperture Radar (SAR) applications. The proposed antenna has been designed on a Roger RT-Duroid 5880 substrate. The reflection coefficient |S11| of the proposed antenna covers the whole X-band from 6.63 GHz to 12.566 GHz. The proposed antenna is circularly polarized with axial ratio (AR) bandwidth that extends from 7.76 GHz to 8.58 GHz. The proposed antenna provides a simultaneous dual circular polarizations (RHCP and LHCP). The gain of the proposed antenna varies between 6.6 dBi and 9.4 dBi. The proposed antenna realizes an efficiency of 92%. The overall size of the proposed antenna is 17 × 16 × 0.508 mm 3 (0.56λ0 × 0.53λ0 × 0.016λ0). Therefore, it is suitable to be employed in satellite telemetry application from 7.9 GHz to 8.4 GHz especially for CubeSats that have limited surface area. Apart from that, this antenna finds its applications in SAR on small satellites from 9 GHz to 10 GHz, military, and RFID tag (tracking equipment). It has been observed that the measurement results match the simulated ones. The proposed antenna design can be practically employed for the previously mentioned applications.

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Section: Rectangular Slot With Embedded Island and Rectangular Feedli...mentioning

confidence: 99%

A Small Size Wideband M-shaped Polygonal Slot Antenna for X-band Satellite Applications

Rabie,

El-Gendy,

El Damak

et al. 2024

PIER C

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“…Step 1: Design the truncated corner square patch with operation in the low-frequency band. The size W p will have a strong effect on the operating frequency, and it is initially defined by Equation (1). Meanwhile, the AR value is tuned by the corner truncation parameter, d.…”

Section: Design Proceduresmentioning

confidence: 99%

“…In recent years, many researchers have focused on designing antennas with circularly polarized (CP) radiation [1,2] rather than linear polarization [3]. The benefits of adopting CP radiation in antennas have been illustrated for multipath interference reduction and polarization mismatch mitigation.…”

Section: Introductionmentioning

confidence: 99%

Wideband Circularly Polarized Antenna Based on a Non-Uniform Metasurface

Tran

Althuwayb

2020

Applied Sciences

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This paper presents a non-uniform metasurface (MS)-based circularly polarized (CP) antenna that is able to perform with a wideband operation characteristic. A squared patch with truncated corners was chosen as a radiating CP source. Then, unlike the conventional CP MS antennas with a uniform MS, the proposed design employed a non-uniform MS placed above the driven patch. Apart from increasing the impedance bandwidth, the non-uniform MS was also capable of generating two additional CP bands in the high-frequency region, which contributed to significantly increasing the antenna’s overall performance. For demonstration, an antenna prototype was fabricated and experimentally tested. The measured operating bandwidth of the fabricated antenna was about 30% and the broadside gain within this band was around 6.6 dBic. Compared to the other reported CP MS antennas in the open literature, the proposed design has the advantages of very wideband operation with a comparable size and gain.

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“…This small difference in radii of these circular patches helps in the generation of two orthogonal field components with a quadrature phase and the same amplitude for CP behaviour. To increase the 3-dB ARBW (up to 84.40 % in the frequency range of 1.89-4.65 GHz) and beamwidth (more than 75°), Trinh-Van et al [11] presented a crescent-shaped slot antenna. The designed antenna is energized by a twisted feeding line connected with a microstrip feed line of 50 Ω.…”

Section: Introductionmentioning

confidence: 99%

Square Slot Antenna for Wide Circularly Polarized Bandwidth and Axial Ratio Beamwidth

Sharma¹,

Jhajharia

2021

Electrical, Control and Communication Engineering

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The article proposes design investigation and experimental results of a coplanar waveguide (CPW) fed square slot antenna that gives wideband circular polarization. This circular polarization characteristic is achieved by embedding a square shape stub to left bottom corner and an L-shaped strip to the right upper corner of the slot. A high impedance bandwidth of 87.8 % (3.6–9.0 GHz), a wide axial ratio bandwidth of 73.05 % (4.2–9.0 GHz) and wide 3-dB axial ratio beamwidth of 90° in the entire frequency range of interest are achieved with this antenna structure. To improve the 3-dB axial ratio bandwidth, three slots (two horizontal and one vertical) are scratched at the exterior periphery of the ground plane. These perturbation assemblies are accountable to excite orthogonal modes and help increase an axial ratio bandwidth. The designed antenna displays the constant and steady radiation patterns in the complete frequency range of concern. The overall dimension of the presented compact antenna is 0.24λ × 0.24λ × 0.01λ.

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Bandwidth-Enhanced Circularly Polarized Crescent-Shaped Slot Antenna via Circular-Patch Loading

Cited by 6 publications

References 17 publications

A Small Size Wideband M-shaped Polygonal Slot Antenna for X-band Satellite Applications

A Small Size Wideband M-shaped Polygonal Slot Antenna for X-band Satellite Applications

Wideband Circularly Polarized Antenna Based on a Non-Uniform Metasurface

Square Slot Antenna for Wide Circularly Polarized Bandwidth and Axial Ratio Beamwidth

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