Bandwidth Enhancement and Generation of CP by Using Parasitic Patch on Rectangular DRA for Wireless Applications

Iqbal, Javed; Illahi, Usman; Sulaiman, M. I.; Alam, Muhammad Mansoor; Su’ud, Mazliham Mohd; Yasin, Mohd Najib Mohd; Jamaluddin, Mohd Haizal

doi:10.1109/access.2019.2924468

Cited by 16 publications

(9 citation statements)

References 17 publications

(19 reference statements)

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“…systems [2], [3]. Specifically, DRAs with circularly polarized (CP) radiation are preferred for such systems, as CP antennas, compared to linearly polarized (LP) antennas, are less affected by multipath interference and by misalignment between the transmitting and receiving antennas [4].…”

Section: Introductionmentioning

confidence: 99%

“…The generation of the orthogonal degenerate modes is typically required in the antenna structure to realize circular polarization. In CP DRAs, the required orthogonal degenerate modes can be generated either by single-point or multi-point feeding techniques [3]. A multi-point feed CP DRA can achieve a wider 3-dB axial ratio bandwidth (ARBW) but also requires an external feeding network, such as a power divider or hybrid coupler, resulting in an inevitable increase in the overall size, greater losses, and greater complexity of the antenna system as well [5], [6].…”

Section: Introductionmentioning

confidence: 99%

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Single-Fed Circularly Polarized Dielectric Resonator Antenna With an Enhanced Axial Ratio Bandwidth and Enhanced Gain

et al. 2020

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A compact single-fed circularly polarized dielectric resonator antenna (DRA) with an enhanced 3-dB axial ratio bandwidth (ARBW) and gain is proposed. The DRA is implemented by joining a smaller dielectric resonator (DR) to one side wall of a main rectangular DR and is excited by an offset vertical metallic strip. With this configuration, two sets of degenerate orthogonal modes, the TE 111 mode and TE 113 mode, are simultaneously excited to realize wideband circular polarization operation. Furthermore, by removing a small DR portion from the lower corner of the main DR, the boresight gains at higher frequencies are significantly enhanced. An antenna prototype is fabricated and measured to verify the performance of the proposed design. The experimental results illustrate that the proposed antenna achieves a measured 3-dB ARBW of approximately 44.73% (3.68-5.80 GHz) in conjunction with a broad −10 dB impedance bandwidth of 69.66% (2.9-6.0 GHz). The measured boresight gain is found to be 5.49±0.85 dBic within the passband with a maximum value of 6.34 dBic at 4.7 GHz. Moreover, reasonable agreement between the simulated and measured results is achieved. INDEX TERMS Bandwidth enhancement, circular polarization, dielectric resonator antenna, higher order mode, wideband antenna.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Single-Fed Circularly Polarized Dielectric Resonator Antenna With an Enhanced Axial Ratio Bandwidth and Enhanced Gain

et al. 2020

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“…The proposed design is selected based on enhanced impedance and axial ratio bandwidths at the desired frequency band. The works done are motivated from previous design [27], where the initial size of the DRA is from the design.…”

Section: Methodsmentioning

confidence: 99%

Higher-Order-Mode Triple Band Circularly Polarized Rectangular Dielectric Resonator Antenna

et al. 2021

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The paper presents a triband circular polarized rectangular dielectric resonator antenna. A single coaxial cable feeds the DRA to a double stub strip on the DRA side. A patch strip coupled to the feed assists in widening the bandwidth of the proposed DRA. The degenerate mode pair TE∂11x and higher-TE∂23x has been excited to achieve CP and enhance the antenna gain. The higher-order mode has been excited using a low-cost simple excitation mechanism without compromising on the size and shape of the DRA. An impedance bandwidth of 48% with a gain ~6–9 dBic was achieved in all resonance frequencies. Additionally, the AR bandwidth of 5.5%, 4.2%, and 2.76% was obtained at three different frequencies. Note that the proposed DRA exhibits a wide beamwidth of 112o, which is good for better signal reception. A comparison between the measured with simulated results shows that the measured results are matched by the simulated result trends.

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“…In particular, the circularly polarized DRA has the ability to suppress multipath interference and resist polarization mismatch [3,4], which can improve the anti-interference ability of the antenna to guarantee the transmission quality of electromagnetic signals so that it has an ideal application prospect in radio frequency identication (RFID) system, global positioning system, and satellite communication/navigation system. erefore, research on circularly polarized DRA has attracted increasing attention in recent years [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

A Wideband Circularly Polarized Dielectric Resonator Antenna Using Inverse f-Shaped Slot Excitation with Parasitic Metal Structure

Chen

et al. 2022

International Journal of Antennas and Propagation

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In this paper, a single-fed wideband circularly polarized dielectric resonator antenna (DRA) is proposed. The antenna consists of a substrate, a cylindrical dielectric resonator, and four curved parasitic metal blocks that are rotated and placed around the dielectric resonator. The GND of the substrate is etched with an inverse f-shaped slot. The orthogonal working mode of the DRA is excited by the inverse f-shaped slot coupled to the microstrip, thereby obtaining circularly polarized radiation. The impedance bandwidth and axial ratio bandwidth of the antenna are improved by optimizing the structure of the inverse f-shaped slot and the shape and size of curved parasitic metal blocks, and finally, a circularly polarized dielectric resonator antenna with significant bandwidth advantages is obtained. The antenna is simulated, fabricated, and measured. The measured results show that the proposed circularly polarized DRA has an impedance bandwidth of 58.5% (2.61–4.77 GHz) and an axial bandwidth of 55.2% (2.75–4.85 GHz) and finally achieves an effective axial bandwidth of 53.7% (2.75–4.77 GHz), the peak gain of 6.84 dBi, and average efficiency of 90.78%, with excellent overall performance.

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Bandwidth Enhancement and Generation of CP by Using Parasitic Patch on Rectangular DRA for Wireless Applications

Cited by 16 publications

References 17 publications

Single-Fed Circularly Polarized Dielectric Resonator Antenna With an Enhanced Axial Ratio Bandwidth and Enhanced Gain

Single-Fed Circularly Polarized Dielectric Resonator Antenna With an Enhanced Axial Ratio Bandwidth and Enhanced Gain

Higher-Order-Mode Triple Band Circularly Polarized Rectangular Dielectric Resonator Antenna

A Wideband Circularly Polarized Dielectric Resonator Antenna Using Inverse f-Shaped Slot Excitation with Parasitic Metal Structure

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