Broadband cylindrical dielectric resonator antenna excited by modified microstrip line

Bijumon, P.V.; Menon, Sreedevi K.; Suma, M.N.; Sebastian, Mailadil Thomas; Mohanan, P.

doi:10.1049/el:20050090

Cited by 41 publications

(21 citation statements)

References 5 publications

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“…The DR feed line geometry has been utilized for the extension of the antenna bandwidth [8]. Other techniques to achieve UWB operation employ monopole geometries, composite DRAs using composite shapes and/or composite materials, modified ground plane shapes and use of defected ground planes [9,10,11,12].…”

Section: Introductionmentioning

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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Section: Introductionmentioning

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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“…Owing to their compact size and devoid of conductor losses, dielectric resonator antennas (DRA) have gained much attention [5,6]. Usually, these DRAs are fabricated using ceramic materials [7][8][9][10][11]. However, these ceramic DRAs are fragile and involves expensive high sintering fabrication processes including metallisation.…”

Section: Introductionmentioning

confidence: 99%

BST-Coc Composite Based Rectangular Dielectric Resonator Antenna (Dra) for 2.4 Wlan Wrist Applications

Palukuru¹,

Sonoda²,

Rajesh³

et al. 2010

PIER C

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Abstract-A rectangular dielectric resonator antenna (DRA) based on Barium Strontium Titanate-Cyclic Olefin Copolymer (BST-COC) composite for 2.4 GHz wrist application is designed and characterized. The dielectric properties of the composite with ∼ 57 vol.% BST loading are characterized using microstrip ring resonator structures at 2.45 GHz frequency. The proposed DRA, fixed onto a reverse grounded FR4 laminate, has a very compact size of 19 mm × 10 mm × 5 mm. The impact of the user's body proximity on the radiation performance of the antenna is studied experimentally. The percentage total efficiency and gain of the antenna deteriorated by about 8.5% and 2 dB due to the proximity of the user's body. The proposed DRA showed better performance than that of resonant type of antennas when close to the user's body.

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“…Dielectric antenna have proved themselves to be ideal candidates for antenna application by offer several advantages including mechanical simplicity, large impedance bandwidth [6], simple coupling schemes to all commonly used transmission line [9,10], very high radiation efficiency, can be made smaller than conventional metal antennas and more resistant to proximity detuning when placed close to another object. DRA can be easily varied by suitably choosing the dielectric constant of the resonator material and its dimensions [1,7]. Dielectric Resonators (DR's) are preferred because they are easy to fabricate and offer more degree of freedom to control the resonant frequency and quality factor [11].…”

Section: Introductionmentioning

confidence: 99%

2.5 GHz BaTiO3 DIELECTRIC RESONATOR ANTENNA

Ain¹,

Hassan²,

Singh³

et al. 2007

PIER

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Abstract-Experimental study on a cylindrical Dielectric Resonator Antenna (DRA) using barium titanate (BaTiO 3 ) is presented in this paper. The antenna is fed with a 50 Ω microstrip transmission line at frequency around 2.5 GHz. High dielectric constant (ε r = 1000) resonator samples with different thickness are employed. The return loss, input impedance and radiation patterns are studied. Design simulation results using CST software also presented.

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Broadband cylindrical dielectric resonator antenna excited by modified microstrip line

Cited by 41 publications

References 5 publications

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

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

BST-Coc Composite Based Rectangular Dielectric Resonator Antenna (Dra) for 2.4 Wlan Wrist Applications

2.5 GHz BaTiO3 DIELECTRIC RESONATOR ANTENNA

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