A novel wideband fractal rectangular dielectric resonator antenna with improved radiation performance

Luo, Wei; Feng, Yulu; Ren, Yi; Yin, Bo

doi:10.1016/j.aeue.2021.153984

Cited by 14 publications

(6 citation statements)

References 27 publications

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“…Table III compares the results of the proposed design to the earlier works presented in [5], [11], [12], [14], [15], [30]- [32]. Antennas with similar feeding and radiation structures are compared so as to make inferences on the proposed design.…”

Section: Simulation Results and Performance Analysismentioning

confidence: 99%

“…At high frequencies, the conventional microstrip patch antennas (MPAs) suffer from low gain, poor radiation efficiency and narrow bandwidth [4], [5]. Dielectric resonator antennas (DRAs) offer a suitable structure with attractive attributes such as small size, low profile and high radiation efficiency [6], [7].…”

mentioning

confidence: 99%

“…These have the effect of reducing the Q-factor of the DR to achieve an increase in the bandwidth. The use of modified DR geometries has been applied in [5], where the authors have used a fractal structure in the DR element to achieve a bandwidth of 19.5%. The effect of this fractal geometry is to introduce air gaps in the element.…”

mentioning

confidence: 99%

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Substrate Integrated Waveguide - Dielectric Resonator Antenna for Future Wireless Communication

2022

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A substrate integrated waveguide (SIW) fed rectangular-shaped dielectric resonator antenna (DRA) is proposed for application in the D -Band frequency regime. The Dielectric Resonator (DR) is designed to operate in higher order modes. A rectangular-shaped narrow slot is used to excite the DR element, leading to multiple resonances. The resulting structure is a multi-resonant antenna operating at six frequencies at 123.64 GHz, 125.76 GHz, 127.4 GHz, 129.9 GHz, 134.9 GHz and 137.7 GHz frequencies. These are identified as TE10δ1, TE7δ5, TEδ31, TEδ25, TEδ31 and TEδ35 modes of operation of the resonator, respectively. These resonances are merged to achieve a -10 dB impedance bandwidth ranging between 122.58 GHz and 139.51 GHz, equivalent to 13.4% at a center frequency of 125.76 GHz. Moreover, the antenna possesses a stable radiation pattern in the broadband direction, across the entire frequency band of operation. Simulation results show that the antenna has a peak gain of 12.3 dBi, maximum directivity of 13.14 dBi and maximum efficiency of 84% at a frequency of 126 GHz. Simulated results show that the proposed design has potential and suitability for utilization in future wireless communications.

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Section: Simulation Results and Performance Analysismentioning

confidence: 99%

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confidence: 99%

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Substrate Integrated Waveguide - Dielectric Resonator Antenna for Future Wireless Communication

2022

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“…The realized gain (G) of the proposed filtering DRA can be calculated by formula (1). The reflection coefficient of the proposed filtering DRA can be calculated by formula (2), and the antenna efficiency (η) can be calculated by formula (3).…”

Section: Analysis Of High-selectivity Generating Mechanismmentioning

confidence: 99%

“…They are widely used in modern RF frontend. [1][2][3] Omnidirectional antennas can receive signals in all directions on the horizontal plane, which is suitable for application in wireless local area network systems. The omnidirectional DRA designs have been reported in the recent years.…”

Section: Introductionmentioning

confidence: 99%

An omnidirectional filtering dielectric resonator antenna based on metal patches

Zhang

et al. 2022

Int J RF Mic Comp-Aid Eng

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A novel filtering dielectric resonator (DR) antenna (DRA) is designed in this article. By using a single-layer planar feed structure, the TM 01δ and TM 011+δ modes of a cylindrical DR are excited. The proposed filtering DRA achieves a good omnidirectional radiation performance and a flat gain response. By loading a crossed patch with four shorting pins on the feed structure, the lower edge of the passband obtains a steep roll-off rate. By plating four metal patches on the side wall of the DR, a radiation null (RN) is successfully introduced at the upper sideband of the DRA. The suppression levels of the proposed filtering DRA in the lower and upper stopbands are above 18 dB. Therefore, the proposed filtering DRA achieves filtering function without additional circuits. For demonstration, a prototype DRA is fabricated and measured. The simulated and measured results are basically consistent.

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A Low-Profile Perturbed Convex Conformal CDRA

Mishra,

Gupta,

Tiwari

et al. 2024

Signals and Communication Technology

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A novel wideband fractal rectangular dielectric resonator antenna with improved radiation performance

Cited by 14 publications

References 27 publications

Substrate Integrated Waveguide - Dielectric Resonator Antenna for Future Wireless Communication

Substrate Integrated Waveguide - Dielectric Resonator Antenna for Future Wireless Communication

An omnidirectional filtering dielectric resonator antenna based on metal patches

A Low-Profile Perturbed Convex Conformal CDRA

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