A Wideband Conical Beam Cylindrical Dielectric Resonator Antenna

Kumar, A. V. Praveen; Hamsakutty, V.; Yohannan, Jaimon; Mathew, K. T.

doi:10.1109/lawp.2006.890747

Cited by 20 publications

(25 citation statements)

References 8 publications

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“…To enhance the bandwidth, various techniques have been developed for DRAs, such as coplanar parasitic DRAs [4], stacked DRAs [5,6], or various-shaped DRAs [7]. It is shown here that by selecting optimum parameters like height and breadth of vertical feed-strip and its offset distance from the open end of the microstrip feed line, a wideband response with a moderate gain could be achieved for a half split DRA which is comparable with the result obtained in its full cylindrical counterpart as reported in [8].…”

Section: Discussionsupporting

confidence: 73%

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An investigation of wideband circular cylindrical sector dielectric resonator antenna with microstripline feed

Gopakumar

Yohannan

Kalappura

et al. 2009

Micro & Optical Tech Letters

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Input the interference curve to computer by data acquiring system, and the local maximum values in one period of an interference curve can be measured. Substitute the values to Eq. (9), and then there can be n (n is an odd number) or n þ 1 (n is an even number) linear equations. Because Eq. (9) is an even function, so nearly half equations are repeated. Forsake the repeated equations, we can get an equation system.ABSTRACT: The article proposes a compact microstrip line fed dielectric resonator antenna with half split circular, cylindrical profile which is experimentally investigated. It shows that at optimum parameters, this low profile, small size antenna gives a wideband Figure 5 Experiment interference curve and compensated curve. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com]ABSTRACT: A new eigenmode algorithm based on the method of lines and the generalized transmission line equations is applied on full-wave analysis of (3-D) MMIC components. The analytical calculation in the direction of propagation enables the analysis of structures of very short or long interconnections between single discontinuities. The analysis is developed by nonequidistant discretization to reduce the discretization window. In this article, a periodically nonuniform coupled microstrip lines filter is designed to offer a wide band performance with a small size structure and with harmonic suppression. The analysis of this filter is applied using the new technique of the method of lines. In this analysis, the scattering parameters of the designed filter are computed. The designed filter is fabricated and tested, where good agreement is found between the numerical and the experimental results.

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Section: Discussionsupporting

confidence: 73%

“…Because the zero-level fringe is the biggest among all the interference fringes, and it has the best SNR. Vibration signal can be exactly demodulated from it [8], and the distortion caused by wide spectrum laser source can be eliminated.…”

mentioning

confidence: 99%

An investigation of wideband circular cylindrical sector dielectric resonator antenna with microstripline feed

Gopakumar

Yohannan

Kalappura

et al. 2009

Micro & Optical Tech Letters

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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%

“…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]. The drawback of this kind wideband DRAs is that the radiation pattern is deformed during the operating band.…”

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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“…Various microstrip feeding technique have been proposed to enhance the bandwidth of the DRA. T-shape fed cylindrical DRA with bandwidth of 26% [5], L-Shaped fed ring DRA which offers bandwidth of 25.1% [6] and vertical microstrip feed for cylindrical DRA with bandwidth of 35% [7] have been presented.…”

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confidence: 99%

Annular shape microstrip feeding technique for cylindrical and half-split cylindrical dielectric resonator antenna for broadband applications

Kumar

Chaudhary

Srivastava

2013

2013 IEEE Antennas and Propagation Society International Symposium (APSURSI)

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In this paper, an annular shape microstrip feeding technique is proposed to excite a cylindrical and a half-split cylindrical dielectric resonator antenna (DRA). The 10 dB impedance bandwidth offered by cylindrical and half-split cylindrical DRA are 62.90% and 66.17% respectively at their center frequencies. The operating frequency ranges for cylindrical and half-split cylindrical dielectric resonator are 3.46 GHz -6.64 GHz and 3.58 GHz -7.12 GHz respectively. The radiation patterns are broadside and consistent throughout the operating bandwidth. The average gain of the cylindrical and half-split antennas is 3.82 dB and 3.42 dB respectively.

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A Wideband Conical Beam Cylindrical Dielectric Resonator Antenna

Cited by 20 publications

References 8 publications

An investigation of wideband circular cylindrical sector dielectric resonator antenna with microstripline feed

An investigation of wideband circular cylindrical sector dielectric resonator antenna with microstripline feed

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

Annular shape microstrip feeding technique for cylindrical and half-split cylindrical dielectric resonator antenna for broadband applications

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