Slot excitation of the dielectric disk radiator

Kishk, Ahmed A.; Ittipiboon, A.; Antar, Yahia M. M.; Cuhaci, M.

doi:10.1109/8.366382

Cited by 82 publications

(39 citation statements)

References 11 publications

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“…These parameters control the number of operating bands and an amount of the coupling energy between the SIW and the Dielectric Resonator. Obviously, the dimension and material of Dielectric resonator influence the coupling too, their size is given by the equation [12]. The influence of offset (Xs) position of the solo slot on the behavior of the return loss and operating band is shown in Figure 4 the amount of the coupling, and minor shifts in the resonance frequency (a, b) as well as it increases the number of operating bands (b).…”

Section: Parametric Studymentioning

confidence: 99%

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Design Investigation of a Laminated Waveguide Fed Multi-Band DRA for Military Applications

et al. 2017

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In this paper a laminated waveguide fed DR Antenna is investigated. It can use for moderate power military applications. Cylindrical DRA is excited by two closely spaced asymmetric longitudinal slots on the broad wall of the laminated cavity are responsible for producing three different frequency bands. Parametric study of slots has been done with the help of commercial software ANSOFT HFSS. All the bands have sharp rejection. The final model of the antenna is simulated, fabricated and experimentally measured. Measured results are in quite accordant with design results. SIW feeding structures have small losses, moderate power handling capacity, low costs, compact sizes and can be seamlessly integrated with planar circuits. At all the bands 9.76 GHz, 10.53 GHz and 11.8 GHz resonant frequency, the antenna shows 56 MHz, 160 MHz, and 250 MHz impedance bandwidth (for VSWR<2) with 6 dB,6.2 dB and 6.8 dB gain respectively. Simulated and measured results reveal outstanding performance with a cross-polar level of 29 dB lower than that of the co-polar level at 9.76 GHz, the cross-polar level of 32 dB lower than that of the co-polar level at 10.53, GHz, and similarly cross-polar level of 30 dB lower than that of the co-polar level at 11.8 GHz.

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Section: Parametric Studymentioning

confidence: 99%

“…The TM 110 mode resonator frequency of a cylindrical DRA can be calculated using [12] f r = C 2πd ffiffiffi ffi ε r p 1.71…”

Section: Parameters Dimension (Mm)mentioning

confidence: 99%

Design Investigation of a Laminated Waveguide Fed Multi-Band DRA for Military Applications

et al. 2017

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“…A simple dielectric rectangular parallelepiped excited through a coaxial probe or a slot can exhibit broadside, linearly polarized radiation characteristics, provided it is excited in its fundamental mode [2]. Similar characteristics are obtained if the fundamental mode of the cylindrical DRA is excited [3], while some higher order modes exhibit patterns with a null in the broadside direction . Circular polarization is also very easily attainable, provided the DRA shape and the coupling scheme lead to the excitation of two degenerate orthogonal modes with 90 phase difference between them [4], [5].…”

mentioning

confidence: 97%

The Trapezoidal Dielectric Resonator Antenna

Almpanis

Fumeaux

Vahldieck

2008

IEEE Trans. Antennas Propagat.

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“…The resonant frequency of an isolated DR cylinder is calculated as [18]: This section reports a study to investigate how various parameters influence the response of the proposed antenna. The antenna structure was analyzed and optimized using Computer Simulation Technology (CST) microwave studio suite TM 2011.…”

Section: Antenna Geometrymentioning

confidence: 99%

Balanced dual‐segment cylindrical dielectric resonator antennas for ultra‐wideband applications

Majeed¹,

Abdullah²,

Sayidmarie³

et al. 2015

IET Microwaves, Antennas & Propagation

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Abstract:In this paper, balanced dual segment cylindrical dielectric antennas (CDRA) with ultra wide-band operation are reported. First a T-shaped slot and L-shaped microstrip feeding line are suggested to furnish a balanced coupling mechanism for feeding two DRAs.Performance of the proposed antenna was analyzed and optimized against the target frequency band. The proposed antenna was then modified by adding a C-shaped strip to increase the gain. The performances of both balanced antennas were characterized and optimized in terms of antenna reflection coefficient, radiation pattern, and gain. The antennas cover the frequency range from 6.4 GHz to 11.736 GHz, which is 58.7% bandwidth. A maximum gain of 2.66 dB was achieved at a frequency of 7 GHz with the first antenna, with a further 2.25 dB increase in maximum gain attained by adding the C-shaped strip. For validation, prototypes of the two antennas were fabricated and tested. The predicted and measured results showed reasonable agreement and the results confirmed good impedance bandwidth characteristics for ultra-wideband operation from both proposed balanced antennas.

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Slot excitation of the dielectric disk radiator

Cited by 82 publications

References 11 publications

Design Investigation of a Laminated Waveguide Fed Multi-Band DRA for Military Applications

Design Investigation of a Laminated Waveguide Fed Multi-Band DRA for Military Applications

The Trapezoidal Dielectric Resonator Antenna

Balanced dual‐segment cylindrical dielectric resonator antennas for ultra‐wideband applications

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