Realization of Large Dielectric Resonator Antenna ESPAR

Movahedinia, R.; Chaharmir, M.R.; Sebak, A.; Nikkhah, Mohammad Ranjbar; Kishk, Ahmed A.

doi:10.1109/tap.2017.2705024

Cited by 33 publications

(10 citation statements)

References 23 publications

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“…It is observed that for higher capacitance values, the cross antenna does not show any improvement in beam scanning. It is very difficult to scan the radiated beam above 10.8° in the E‐plane due to following reasons (1) difference in the coupling levels of E‐ and H‐plane, (2) amplitude of the coupled field is different for top and bottom parasitic element, and (3) currents on the driven and parasitic elements are out of phase …”

Section: Resultsmentioning

confidence: 99%

A reconfigurable microstrip cross parasitic antenna with complete azimuthal beam scanning and tunable beamwidth

Khairnar

Kadam

Ramesha

et al. 2018

Int J RF Microw Comput Aided Eng

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In this article, a reconfigurable cross parasitic antenna is proposed to achieve complete azimuthal beam scanning and tunable beamwidth in the E-and H-plane. The antenna consists of a square-shaped driven element and four size-tunable parasitic elements placed on each side of the driven element. Each tunable parasitic element is composed of a hexagonal slot loaded with two varactor diodes. The tunable parasitic element shows dual-resonance behavior and hence its effective electrical size can be controlled with respect to the driven element. The radiated beam of the cross antenna is continuously scanned in the elevation plane from θ = 0 to 10.8 , 0 to 32.4 , and 0 to 40 in ϕ = (0 , 180 ), (45 , 135 , 225 , 315 ), and (90 , 270 ) planes, respectively. Moreover, the 3-dB beamwidth of the cross antenna is continuously tuned from 65 to 152 and from 64 to 116 in the E-and H-plane, respectively. The antenna shows good impedance matching in all the operating modes with −10 dB bandwidth from 2.43 to 2.47 GHz. A prototype of the antenna is fabricated to experimentally verify the simulated reflection and radiation characteristics. K E Y W O R D S continuous beam scanning, effective electrical size, mutual coupling, tunable beamwidth, tunable parasitic element

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Section: Resultsmentioning

confidence: 99%

A reconfigurable microstrip cross parasitic antenna with complete azimuthal beam scanning and tunable beamwidth

Khairnar

Kadam

Ramesha

et al. 2018

Int J RF Microw Comput Aided Eng

View full text Add to dashboard Cite

show abstract

“…Thus, a standing wave field pattern is to be formed inside the dielectric resonator due to the excited electromagnetic wave, which has been coupled from the feeding line. 10 In the last two decades, DRAs [11][12][13][14][15][16][17][18][19][20][21] have been extensively investigated as suitable antennas for the wireless applications. The crucial design step of DRA is the determination of the permittivity and geometric aspect ratio of length to the height of the dielectric resonator.…”

Section: Introductionmentioning

confidence: 99%

Design and realization of novel frequency selective surface loaded dielectric resonator antenna via 3D printing technology

Belen

Mahoutı

Palandöken

2020

Micro & Optical Tech Letters

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One frequently addressed technique for the performance enhancement of radiating elements in the form of microstrip antennas is the utilization of dielectric resonators. A dielectric resonator antenna (DRA) has a conventional structural formation similar to any microstrip patch antenna where, at least, one additional dielectric layer has been placed over the radiating element. In this paper, it is aimed to propose a high performance, easy to prototype, light weight, and low cost DRA in combination with frequency selective surfaces (FSS) for ISM band applications using 3D printing technology. The proposed 3D printed FSS loaded DRA has a measured gain of 5.6 dBi with S11 level less than −10 dB in the operation band between 1.98 and 2.68 GHz. Furthermore, the measured performance of 3D printed antenna is compared with the counterpart alternative antenna designs in the literature for the similar application fields. The novel FSS loaded DRA is not only much smaller than the counterpart antenna designs but also has a moderate gain characteristics which makes the proposed antenna design an optimal RF solution for ISM band wireless communication applications.

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“…Apart from beam steering, ESPAR antenna has been also used in various other applications like, estimating 2D direction of arrival by employing received signal strength values . The concept of ESPAR has been adopted in designing phase array antenna . In recent years, different topologies have been proposed to improve the performance of the ESPAR antenna .…”

Section: Introductionmentioning

confidence: 99%

ESPAR‐inspired mechanical beam steering antenna with high gain and wide bandwidth performance

Katare

Biswas

Akhtar

2018

Micro & Optical Tech Letters

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Realization of Large Dielectric Resonator Antenna ESPAR

Cited by 33 publications

References 23 publications

A reconfigurable microstrip cross parasitic antenna with complete azimuthal beam scanning and tunable beamwidth

A reconfigurable microstrip cross parasitic antenna with complete azimuthal beam scanning and tunable beamwidth

Design and realization of novel frequency selective surface loaded dielectric resonator antenna via 3D printing technology

ESPAR‐inspired mechanical beam steering antenna with high gain and wide bandwidth performance

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