Two-dimensional cylindrical dielectric resonatorantenna array

Leung, Kwok Wa; Lo, H. Y.; Luk, Kwai‐Man; Yung, E.K.N.

doi:10.1049/el:19980931

Cited by 22 publications

(8 citation statements)

References 8 publications

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“…The proposed DRA array exhibits almost more than 7% impedance bandwidth compared to the design in refs. where different types of microstrip line is used as feed line. Again the proposed design is less complex in comparison with the design in ref.…”

Section: Resultsmentioning

confidence: 99%

A wideband dielectric resonator antenna array using air‐bridgeless coplanar waveguide power divider

Ballav

Parui

2019

Int J RF Microw Comput Aided Eng

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In this communication a 2 × 2 dielectric resonator antenna (DRA) array is proposed with a wideband frequency response. An air bridgeless coplanar waveguide (CPW) power divider network is first time used to feed the 2 × 2 DRA array. Four rectangular DRAs are used as array element and exited in TE111 mode by four slots at the end of the CPW lines in the feed network. The straight CPW phase delay line in feed network is further meandered resulting an enhanced radiation performance. The proposed DRA array exhibits a wideband response with an impedance bandwidth of 16% while maintaining a stable broadside radiation pattern with the gain range from 8 to 9.4 dBi. The proposed design is fabricated and measured, reaching good agreement with simulation results.

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Section: Resultsmentioning

confidence: 99%

A wideband dielectric resonator antenna array using air‐bridgeless coplanar waveguide power divider

Ballav

Parui

2019

Int J RF Microw Comput Aided Eng

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“…Thus, the impedance bandwidth of the single-element DRA has been well broadened, but its gain is usually limited to about 5 dBi. In some applications, the DRA with a higher gain is required, and then more efforts have been devoted to DRA array design to increasing the antenna gain [5][6][7]. For example, Wu and coworkers [5] propose a 2 ϫ 2-element DRA subarray with a probe excitation, which achieved impedance bandwidths of 3.8 -4.1% for the dielectric constant of resonator dr ϭ 37 and a gain of 5.8 -10.2 dBi.…”

Section: Introductionmentioning

confidence: 99%

“…For example, Wu and coworkers [5] propose a 2 ϫ 2-element DRA subarray with a probe excitation, which achieved impedance bandwidths of 3.8 -4.1% for the dielectric constant of resonator dr ϭ 37 and a gain of 5.8 -10.2 dBi. In [6], Leung et al studies a 2 ϫ 2-element aperture-coupled DRA subarray with an impedance bandwidth of 4.4% for the dielectric constant of resonator dr ϭ 16 and a peak gain of 10.8 dBi. In this article, first, a novel feed structure is proposed to excite the element, where the impedance bandwidth of the element has been enhanced to about four times of that of the element with a conventional microstrip line feed.…”

Section: Introductionmentioning

confidence: 99%

Dielectric resonator antenna element and subarray with unequal cross‐stub

Zhang

Zhong

Xu³

2008

Micro & Optical Tech Letters

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A novel dielectric resonator antenna element and its 2 × 2‐element subarray are introduced, where the element is fed by a microstrip line with an unequal crossstub to expand the impedance bandwidth. Both the simulated and experimental results are presented, showing a good agreement. The proposed subarray provides a measured impedance bandwidth of 4.2% for the dielectric constant of resonator εr1 = 38 and a measured gain of 9.8–10.8 dBi across the entire operating bandwidth. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2189–2191, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23602

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“…Traditionally, implementation of cylindrical DRA array entails using a perfect electric conducting ground plane placed below the antenna to produce a unidirectional beam. However, only a few investigations have been undertaken to assess the performance of an aperture-coupled DRA array [4]- [6].…”

Section: Introductionmentioning

confidence: 99%

Full-Wave Analysis of Dielectric Resonator Antenna with Unconditionally Stable Pseudospectral Time-Domain Method

Zheng

Feng

Wang

et al. 2007

2007 Asia-Pacific Microwave Conference

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This paper illustrates the application of the alternating direction implicit (ADI) pseudospectral time-domain (PSTD) simulator to full-wave analyzing of dielectric resonator antennas (DRA's). The multi-mode DRA's have been investigated, and the multidomain strategy is employed to allow for a flexible treatment of internal inhomogeneities. Numerical results demonstrate the unconditional stability and the second-order accuracy for the ADI-PSTD algorithm. For the designed DRA array, simulations are verified by measurements, and reasonable agreement between theory and experiment is obtained. It is shown that this method is highly efficient for the full-wave analysis of DRA's.

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Two-dimensional cylindrical dielectric resonatorantenna array

Cited by 22 publications

References 8 publications

A wideband dielectric resonator antenna array using air‐bridgeless coplanar waveguide power divider

A wideband dielectric resonator antenna array using air‐bridgeless coplanar waveguide power divider

Dielectric resonator antenna element and subarray with unequal cross‐stub

Full-Wave Analysis of Dielectric Resonator Antenna with Unconditionally Stable Pseudospectral Time-Domain Method

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