Broadband Dual Circularly Polarized Dielectric Resonator Antenna for Ambient Electromagnetic Energy Harvesting

Liu, Sihao; Yang, Dan; Chen, Yongpin; Huang, Shaode; Xiang, Yong

doi:10.1109/tap.2020.2968768

Cited by 33 publications

(16 citation statements)

References 25 publications

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“…By using different strategies, many conventional DRAs can achieve wide operating bandwidths. However, most of the designs have bulky volumes [9]- [18], either large planar sizes (>0.5λ 0 × 0.5λ 0 ) [9]- [13] or high profiles (>0.3λ 0 ) [14]- [18]. To reduce the antenna profile, some novel low profile DRA configurations such as dense dielectric patch resonator antenna (DDPA) [19]- [20] and planar DRA [21] have been proposed recently.…”

Section: Introductionmentioning

confidence: 99%

Compact and Low-Profile Linear-/Circular-Polarization Dielectric Resonator Antennas With Extended Bandwidths

Zhang

Kong

et al. 2022

IEEE Open J. Antennas Propag.

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The dielectric resonator antenna (DRA) with wide bandwidth, compact size and low profile is considered as an attractive candidate for 5G wireless communications. However, most of the reported DRAs either have bulky volumes or have limited bandwidths. In this paper, a kind of compact and low-profile DRA with extended bandwidth is proposed. By observing the E-field distribution differences between the two target modes and modifying the dielectric characteristics (such as material and dimension) of the designated region where the E-field is very weak for fundamental TE 111 mode but quite strong for high-order TE 131 mode, the frequency of TE 131 mode can be significantly affected and shifted down to merge with that of TE 111 mode which is less affected. As a result, extended operating bandwidth can be obtained. This technique also benefits from not having to enlarge the planar size of the high permittivity DR, therefore making the antenna compact enough for 5G beam-scanning and low profile applications. For demonstration, linear-and circular-polarization antenna prototypes were designed and measured. The LP antenna has a −10 dB impedance bandwidth of 17.3% and a peak gain of 7.1 dBi while the CP antenna achieves a 3-dB axial ratio (AR) bandwidth of 12% and a peak gain of 6.6 dBic. Both the antennas have compact volumes of no larger than 0.35λ 0 × 0.35λ 0 × 0.11λ 0 . Based on the LP and CP antenna elements, two 1 × 5 antenna arrays with the capability of beam scanning are designed and simulated. Wide scanning angles of ±45 • and ±40 • can be obtained for the LP and CP arrays, respectively.

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Section: Introductionmentioning

confidence: 99%

Compact and Low-Profile Linear-/Circular-Polarization Dielectric Resonator Antennas With Extended Bandwidths

Zhang

Kong

et al. 2022

IEEE Open J. Antennas Propag.

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“…Several approaches emphasize design aspects, such as polarization, number of ports, frequency bands or tones, and spatial arrangement [11][12][13][14][15][16][17][18][19][20][21]. Indeed, recently, a two-port dual linearly-polarized (LP) bowtie-shaped meander dipole A FIGURE 1.…”

Section: Introductionmentioning

confidence: 99%

“…Besides, other works focused on circular polarization (CP), trying to receive right-hand (RH) and left-hand (LH) CP signals on two ports separately over a single design. These studies used a patch antenna with twocoupled crossed slots [13] or a star-like slot coupled to a dielectric resonator antenna [14]. However, even though these works showed dual-polarization benefits [11][12][13][14], they omitted to compare with a reference single-polarized antenna within the "real" operating environment carrying multiple incidences simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Optimum Antenna Characteristics for Maximally Harvesting Ambient RF Energy

Niamien

2022

IEEE Open J. Antennas Propag.

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“…Therefore, very few designs are available in the literature which has the axial ratio (AR) bandwidth completely covered by its impedance bandwidth. Some designs are reported in the literature such as cross-slot fed square DRA with an overlapping axial ratio bandwidth of 46.9% [12] and a square DRA excited by dual feeding configuration with an overlapping AR bandwidth of 43.5% [13] but due to dual feeding and large antenna dimensions, both structures become complex and bulky, respectively. A square DRA excited by a cross-slot was also stated with an overlapping AR bandwidth of 22.8% [14].…”

Section: Introductionmentioning

confidence: 99%

Investigation on Rotated Rectangular Slots to Improve the Circular Polarization in Cylindrical Dielectric Resonator Antenna

2021

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To achieve wideband circular polarization (CP) characteristics, a new structure with a single feeding technique has been proposed. In the proposed CP structure, to excite the cylindrical dielectric resonator (CDR) four asymmetrical rectangular slots are etched on the ground plane, each rectangular slot is rotated by an angle of (θ = 30 0 ) with respect to its adjacent slots. The electric fields at each slot are separated by 30 0 in space with respect to its adjacent slot to create a 90 0 angular separations between the Efield components. Two orthogonal broadside modes () are excited inside the cylindrical dielectric resonator antenna (CDRA) independently to obtained CP characteristic. To compare the simulated outcomes with the experimental results, fabrication of the proposed antenna prototype has been done. The measured percentage of bandwidth achieved by the proposed radiator for |S 11 | and CP is 26.73% and 23.59%, respectively, and the whole usable axial ratio (AR) frequency bands overlap the impedance passband of the presented CP structure. The proposed radiator has achieved the maximum gain and radiation efficiency of 3.4 dB and 95% over the operating frequency range of the designed antenna, respectively. The proposed CP DRA has been configured for the WLA N band application.

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Broadband Dual Circularly Polarized Dielectric Resonator Antenna for Ambient Electromagnetic Energy Harvesting

Cited by 33 publications

References 25 publications

Compact and Low-Profile Linear-/Circular-Polarization Dielectric Resonator Antennas With Extended Bandwidths

Compact and Low-Profile Linear-/Circular-Polarization Dielectric Resonator Antennas With Extended Bandwidths

Optimum Antenna Characteristics for Maximally Harvesting Ambient RF Energy

Investigation on Rotated Rectangular Slots to Improve the Circular Polarization in Cylindrical Dielectric Resonator Antenna

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