Theoretical and experimental investigations on rectangular dielectric resonator antennas

Mongia, R.K.; Ittipiboon, A.

doi:10.1109/8.623123

Cited by 621 publications

(93 citation statements)

References 36 publications

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“…Multiband response is obtained with less than 10 % impedance bandwidth for each band, which is not wide enough for normal DRA applications. Computational impedance bandwidth is 12 % for resonant frequency f r = 2.9 GHz, that is calculated by DWM method [8]. So for enhancement in bandwidth and gain, slots are introduced in DR.…”

Section: Results and Analysismentioning

confidence: 99%

Bandwidth and Gain Enhancement Technique for Gammadion Cross Dielectric Resonator Antenna

Kumar

Gupta

2015

Wireless Pers Commun

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In this paper, a novel slot-technique is presented to enhance the bandwidth and gain of dielectric resonator antenna (DRA) with two different geometries. First geometry of DRA is Gammadion Cross DRA with semi-cylindrical slots (GCDRA-1), and the other is Gammadion Cross DRA with rectangular slots (GCDRA-2). It is found that the cutting slots can be used to widen the DRA bandwidth or to tune the DRA frequency. Iterations of cutting slot in dielectric resonator are embedded on single structure of DRA. The new Gammadion Cross structure of proposed DRA offers a good impedance bandwidth of 31.6 % for |S 11 | \ -10. In addition, the proposed antenna has a quite higher and more stable gain. The peak gain of proposed antennas is *7 dBi at 5.1 GHZ. The antenna covers most of wireless systems like C-band, 5.2, 5.5 and 5.8 GHz-WLAN and Wi-MAX applications. The simulation process has been done using CST Microwave Studio TM . It is observed that the new proposed Gammadion Cross configuration (GCDRA-2) reduces the DRA volume by 50 % and at the same time enhances the bandwidth from 10 to 31.6 % for |S 11 | \ -10 than the reference antenna. The performance parameters of proposed DRA like reflection coefficient, peak gain and impedance bandwidth has been evaluated and verified these finding with two different Gammadion Cross DRA structures.

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Section: Results and Analysismentioning

confidence: 99%

Bandwidth and Gain Enhancement Technique for Gammadion Cross Dielectric Resonator Antenna

Kumar

Gupta

2015

Wireless Pers Commun

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“…So we must assign a simulation with very small cell size and compare it with Good agreements are observed in Figure 9 for the results of the reflection parameters between the hybrid method and the FDTD method [21], which verified the accuracy of the proposed hybrid method.…”

Section: Numerical Resultsmentioning

confidence: 99%

Analysis of Complex Electromagnetic Structures by Hybrid FDTD/WCIP Method

Gharbi¹,

Zairi²,

Trabelsi³

et al. 2012

JEMAA

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This paper proposes a hybrid full-wave analysis using Finite-Difference Time-Domain (FDTD) and Wave Concept Iterative Process (WCIP) methods, developed to analyze locally arbitrarily shaped microwave structures and Multilayer Planar structure. Using the equivalence principle, the original problem can be decomposed into two sub regions and solve each sub region separately. An interpolation scheme is proposed for communicating between the FDTD fields and WCIP wave, which will not require the effort of fitting the WCIP mesh to the FDTD cells in the interface region. This method is applied to calculate the scattering parameters of arbitrary (3-D) microwave structures. Applying FDTD to 3D discontinuity and WCIP to the remaining region preserves the advantages of both WCIP flexibility and FDTD efficiency. A comparison of the results with the FDTD staircasing data verifies the accuracy of the proposed method.

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“…It is clearly can be seen that the shape of the resonator influences the resonant frequency of the DRA. In this design, three different resonators in the form of cylindrical, rectangular and annular shapes were used and resonates at three different frequencies which is accordance to the Kishk [11] and Rezaei et al [18] Annular sector shape has the highest resonant frequency following by rectangular and cylindrical shape. The highest resonant frequency is at 9.5 GHz while the lowest belong to the cylindrical shape at 8.1 GHz.…”

Section: Comparison Between Different Shapes Tiomentioning

confidence: 91%

“…This antenna is excited at the open-end microstrip line because at the fringing field of the line, the coupling to the antenna is at the maximum. In designing rectangular DRA, theoretical formula of conventional dielectric waveguide mode (CWDM) was used [17,18]. The transcendental equation was solved to get k y .…”

Section: Rectangular Shape Tio 2 Dra Configurationmentioning

confidence: 99%

Simulation and Experimental Investigators on Rectangular, Circular and Cylindrical Dielectric Resonator Antenna

Sreekantan

Ling²,

Ahmad³

et al. 2009

PIER C

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Abstract-In this paper, theoretical and simulation studies on rectangular and annular dielectric resonator antenna (DRA) made of TiO 2 was reported. The ceramic was fabricated by solid state reaction at 1200 • C. The structural and dielectric properties were investigated by X-Ray Diffraction (XRD), Field Emission Electron Microscopy (FESEM) and network Analyzer. The XRD results showed the presence of rutile phase and the microstructure comprised of fine grain (0.2-0.5 µm) and large grain 1.0-1.5 µm. The rectangular and annular shape TiO 2 DRA with high dielectric constant (ε = 84) and low loss tangent (0.080) were fed with 50 Ω microstrip transmission line and comparision between the various shape were investigated. The return loss, input impedance and radiation pattern TiO 2 DRA was studied. Design simulation results using CST Microwave Studio 2008 also was presented.

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Theoretical and experimental investigations on rectangular dielectric resonator antennas

Cited by 621 publications

References 36 publications

Bandwidth and Gain Enhancement Technique for Gammadion Cross Dielectric Resonator Antenna

Bandwidth and Gain Enhancement Technique for Gammadion Cross Dielectric Resonator Antenna

Analysis of Complex Electromagnetic Structures by Hybrid FDTD/WCIP Method

Simulation and Experimental Investigators on Rectangular, Circular and Cylindrical Dielectric Resonator Antenna

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