Broadband L-shaped dielectric resonator antenna

Denidni, Tayeb A.; Rao, Qinjiang; Sebak, Abdel-Razik

doi:10.1109/lawp.2005.860198

Cited by 75 publications

(41 citation statements)

References 7 publications

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“…1,2 In the past years, the most classical antennas are microstrip antenna and dielectric resonator antenna (DRA). [3][4][5][6] Microstrip antenna presents a low efficiency at high operating frequency because of metallic loss. 7 Compared with microstrip antenna, DRA has stimulated tremendous fundamental and practical interests.…”

Section: Introductionmentioning

confidence: 99%

Thermally tunable slot-coupled dielectric resonator antenna

Chen

Wang

et al. 2017

AIP Advances

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Absorption enhancement and total absorption in a graphene-waveguide hybrid structure AIP Advances 7, 025101 (2017); https://doi.org/10.1063/1.4975706The influence of the edge effect on the skyrmion generation in a magnetic nanotrack AIP Advances 7, 025105 (2017) A thermally tunable slot-coupled dielectric resonator antenna (DRA) has been designed and prepared by placing a thermosensitive ceramic resonator onto the slot. Typical magnetic resonance occurs in the resonator, which is closely related to its dielectric constant. Because the dielectric constant of the ceramic resonator decreases as the temperature increases, the resonance frequency of the proposed DRA increases as the temperature increases. The simulated results are in good agreement with the measured ones, which confirms the thermally tunable behavior. This approach provides a way for designing the frequency tunable antennas. © 2017 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license

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Section: Introductionmentioning

confidence: 99%

Thermally tunable slot-coupled dielectric resonator antenna

Chen

Wang

et al. 2017

AIP Advances

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“…[3,4] Various efforts on DRAs have been reported to achieve wideband operation such as introducing an air gap between the DRA and ground plane, [5] multilayer stacking of dielectric materials, [6] fractal approach on DRA. [7] Using the advantage of DR structure, flexibility of various geometries of RDRAs such as L-shaped, [8] T-shaped, [9] H-shaped, [10] Z-shaped, [11] and X-shaped [12] have also been proposed for bandwidth enhancement for broadside radiation. Though the proposed antennas were wideband and compact in size but due to multiband resonances, *Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

Linearly polarized asymmetric dielectric resonator antenna for 5.2-GHz WLAN applications

Kumar

Gupta

2015

Journal of Electromagnetic Waves and Applications

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A rectangular shape of asymmetric dielectric resonator antenna (DRA) excited by a coaxial probe is proposed and investigated. The asymmetric DRA geometry can offer an impedance bandwidth up to 51% for |S 11 | < −10 dB from 4.1 to 6.7 GHz. The antenna covers most of the wireless systems like 5.2, 5.5, and 5.8 GHz WLAN/ Wi-MAX applications. The experimentally measured result shows that the efficiency is above 90% for the bandwidth of operation. The simulated and measured radiation patterns are consistent throughout the operational bandwidth. The measured peak gain over the band is 8.2 dBi. It is also observed that the newly proposed configuration reduces the DRA volume by 26% as compared to conventional rectangular DRA, with compact volume of 8.24 cm 3 . Good match between the measured and simulated results has been obtained.

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“…Dielectric resonator antennas (DRAs) have received lots of attention since they were introduced in the mid-1980s due to several attractive characteristics [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. They are quite useful for high frequency applications, where Ohmic losses tend to be a serious problem for conventional metallic antennas.…”

Section: Introductionmentioning

confidence: 99%

“…However, the bandwidth of these proposed antennas is less than 1 : 2 and hard to further enhance the impedance properties while maintaining stable radiation performance. Other configurations of DR can also be used to broaden the bandwidth, such as tetrahedron and triangular [4], L-shaped [5] or T-shaped [6] and so on. Another kind of methods uses special feeding mechanisms [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Wideband Rectangular Dielectric Resonator Antenna (Dra) With Slot-Fed Design

Weng¹,

Wang²,

Jiao³

et al. 2010

PIER Letters

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Abstract-A novel wideband rectangular dielectric resonator antenna (DRA) is proposed in this paper. A hybrid structure with an isolated dielectric resonator (DR) and an equivalent air-dielectric DR is introduced by lifting the resonator from the ground plane. The hybrid structure is excited by a slot-fed mechanism to obtain a smooth transition between each resonant mode. The resonant modes of the isolated DR and the equivalent DR are merged together to form a wideband impedance bandwidth. It is found that the bandwidth of the proposed antenna can be greatly enhanced by using the hybrid DRA structure instead of the case mounted on the ground plane. A detailed parametric study is carried out to analyze the characteristics of the proposed antenna. Measured results show that the proposed DRA has a 10 dB impedance bandwidth of 61% from 2.4 GHz to 4.5 GHz and the radiation pattern is stable through the operating frequency.

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Broadband L-shaped dielectric resonator antenna

Cited by 75 publications

References 7 publications

Thermally tunable slot-coupled dielectric resonator antenna

Thermally tunable slot-coupled dielectric resonator antenna

Linearly polarized asymmetric dielectric resonator antenna for 5.2-GHz WLAN applications

Wideband Rectangular Dielectric Resonator Antenna (Dra) With Slot-Fed Design

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