Annular Column Loaded Cylindrical Dielectric Resonator Antenna for Wideband Conical Radiation

He, Yonghong; Lin, Yuliang; Deng, Changjiang; Feng, Zhenghe

doi:10.1109/tap.2015.2480096

Cited by 30 publications

(17 citation statements)

References 23 publications

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“…In this paper, a new hybrid DRA configuration will be used to increase the impedance bandwidth of the antenna. Compared to earlier studies in the open literature [23][24][25][26][27][28], the proposed configuration results in multiple nearby resonant modes which explain the further substantial bandwidth enhancement. A measured fractional bandwidth about 148.6% (6.8 : 1) is obtained with a consistent monopole like radiation over the operating bandwidth and a peak gain of 7.14 dBi.…”

Section: Introductionmentioning

confidence: 66%

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Stacked Conical-Cylindrical Hybrid Dielectric Resonator Antenna for Improved Ultrawide Bandwidth

Al-Azza¹,

Malalla²,

Harackiewicz³

et al. 2018

PIER Letters

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Conical and cylindrical dielectric resonator elements are vertically stacked and excited by a simple coaxial monopole. Compared to all earlier configurations, the proposed geometry significantly improves the impedance bandwidth. The ultrawideband response is enhanced due to the multiple resonances occurring by the suggested hybrid antenna. The footprint area of the antenna is only 63.6 mm 2 or 25.44×10 −3 λ 2 o at the lowest operating frequency. The performance of the antenna is verified experimentally and numerically. Presented results show that the proposed hybrid monopole-DRA has a measured impedance bandwidth up to 148.6% (S 11 < −10 dB) along with consistent monopole-like radiation patterns and peak gain of 7.14 dBi. With such properties, the proposed hybrid monopole-DRA can be used in different ultra-wideband wireless applications and as wideband electromagnetic interference (EMI) sensors.

show abstract

Section: Introductionmentioning

confidence: 66%

“…The proposed antenna achieves wider impedance bandwidth than all recent ultra-wideband hybrid DRAs [23][24][25][26][27][28]. The proposed antenna achieves an improvement in the bandwidth by 8.6% compared to the widest impedance bandwidth hybrid DRA reported in the literature till now [24].…”

Section: Simulations and Measurementsmentioning

confidence: 83%

Stacked Conical-Cylindrical Hybrid Dielectric Resonator Antenna for Improved Ultrawide Bandwidth

Al-Azza¹,

Malalla²,

Harackiewicz³

et al. 2018

PIER Letters

View full text Add to dashboard Cite

show abstract

“…The first method is to employ the higher-order modes. For instance, a cylindrical DRA loaded with an annular column was studied in [14]. This work successfully merges a fundamental and three higherorder TM modes of the cylindrical DRA, which provides an impedance bandwidth of 56 %.…”

Section: Introductionmentioning

confidence: 99%

Wideband and Bandwidth-Controllable Hybrid-Cylindrical Glass Dielectric Resonator Antenna for Indoor Communication

2020

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In this paper, a wideband and bandwidth-controllable hybrid-glass dielectric resonator antenna (DRA) excited by a probe platform is proposed. The proposed hybrid-glass DRA simply consists of a probe platform and a solid cylindrical glass DRA unit, making the fabrication easier. The probe mode and the TM 01δ mode of the cylindrical glass DRA are employed to design the wideband antenna. It is found that the impedance bandwidth of this hybrid-DRA can be controlled by the height of the glass DRA in a wide range of ∼23%-70%, without changing the size of the feeding. Engineering formula considering the bandwidth has been given to facilitate the design. To demonstrate the idea, three wideband hybrid-glass DRAs with their measured impedance bandwidths of 39.5%, 56.6% and 74% have been designed. To upgrade the three hybrid-glass DRAs as the artistic antennas, laser-engraving patterned glass is employed to do the fabrication again. The measured results show that the performance of the hybrid-glass DRAs with and without patterns are basically the same. INDEX TERMS Hybrid-glass dielectric resonator antenna, wideband, bandwidth-controllable.

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“…The circularly polarized (CP) antenna removes the mis‐alignment between transmission and receiver side signals, eliminates the multipath interference of the signal and polarization mismatch which occurred due to ionosphere . The high radiation efficiency, high gain, and wide impedance bandwidth, are some of the prominent features of the dielectric resonator antennas (DRAs). In addition to that, it gives low loss, flexibility in choosing different types of shapes and feeding techniques, generation of different modes for achieving different types of radiation patterns .…”

Section: Introductionmentioning

confidence: 99%

Stacked rectangular dielectric resonator antenna with different volumes for wideband circular polarization coupled with step‐shaped conformal strip

Kumar

Chaudhary

2019

Int J RF Microw Comput Aided Eng

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This paper presents a wideband circularly polarized broadside radiation characteristics by using stacked rectangular dielectric resonator antenna (DRA) with different volumes. In this designed antenna, the wide input impedance-and axial ratio (AR)bandwidths come from three factors: stacked rectangular DR with different volumes, stepped-shaped conformal strip associated with microstrip line as a feed and different type of partial ground plane. Here, the orthogonal TE x δ11 and TE y 1δ1 modes have been responsible for the generation of CP radiation in stacked rectangular DRA. Measured results show that the proposed stacked rectangular DRA with different volumes achieves input impedance bandwidth of 54.84% while AR bandwidth has been found to be 11.53%. The proposed antenna provides broadside righthanded CP radiation pattern with gain ranges from 2.27-5.80 dBic and offers an average radiation efficiency of 89.48%, across the entire working bandwidth, respectively. Therefore, this antenna is very much useful for the ISM 2400 band applications.

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Annular Column Loaded Cylindrical Dielectric Resonator Antenna for Wideband Conical Radiation

Cited by 30 publications

References 23 publications

Stacked Conical-Cylindrical Hybrid Dielectric Resonator Antenna for Improved Ultrawide Bandwidth

Stacked Conical-Cylindrical Hybrid Dielectric Resonator Antenna for Improved Ultrawide Bandwidth

Wideband and Bandwidth-Controllable Hybrid-Cylindrical Glass Dielectric Resonator Antenna for Indoor Communication

Stacked rectangular dielectric resonator antenna with different volumes for wideband circular polarization coupled with step‐shaped conformal strip

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