Dielectric Image Line-Based Leaky-Wave Antenna for Wide Range of Beam Scanning Through Broadside

Prasad, Chandra Shekhar; Biswas, Animesh

doi:10.1109/tap.2017.2714024

Cited by 42 publications

(22 citation statements)

References 14 publications

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“…The dominant mode of DIL is in slow wave region where no wave radiates even though the structure is open. A group of H‐shaped grooves carved periodically in the ground along the transmitting direction (z‐axial) can generate infinite space harmonics according to Bloch–Floquet theory, where the phase constant of the n th order space harmonics is given by.

β_{n} = β_{0} + \frac{2 nπ}{p}

…”

Section: Operation Principlementioning

confidence: 99%

“…A LWA based on DIL for broadside radiation is proposed by using pairs of circular patches printed on the top of the DIL. A wide beam‐angle DIL‐based LWA from the backward to forward is proposed, which works at the n = −1 order mode realized by a set of periodic holes in the DIL.…”

Section: Introductionmentioning

confidence: 99%

“…Various designs of DIL-based LWAs are reported [9][10][11][12][13] . DILs as the feeding networks provide the phase difference for the radiation units (microstrip patches) 9,10 .…”

Section: Introductionmentioning

confidence: 99%

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Wide scanning angle LWA based on DIL with H‐shaped grooves

Wei

Liu

et al. 2018

Micro & Optical Tech Letters

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A dielectric image line (DIL)‐based leaky wave antenna (LWA) with H‐shaped grooves is proposed in this paper. By periodically carving a set of H‐shaped grooves in the ground of the DIL, infinite space harmonics are excited, and the proposed antenna works with n = −1 order mode. The H‐shaped radiator can effectively eliminate open stopband (OSB). Over the operating band from 11.1 GHz to 15 GHz, the beam of the proposed antenna scans widely from −72° to 31° (including the broadside) with the realized gain from 9.7 dBi to 12.9 dBi. A prototype is fabricated and measured, which testifies the design theory and the simulation results.

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β_{n} = β_{0} + \frac{2 nπ}{p}

…”

Section: Operation Principlementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Wide scanning angle LWA based on DIL with H‐shaped grooves

Wei

Liu

et al. 2018

Micro & Optical Tech Letters

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“…Searching a low-cost means to measure the distance and angle of targets is always a great challenge in the commercial radar sensors researches [1][2][3][11][12][13][14][15][16][17][18]. In recent years, with the attractive advantages such as low profile, compact structure, wide frequency band, frequency beam scanning characteristics and easiness of integration with planar circuits, scientists and researchers have paid much attention to planar leaky-wave antennas (LWAs) [2][3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…Typical frequency-scanning antenna arrays operate based on two basic mechanisms: one is the radiating function, and the other is the frequency-dependent phase shifter function [7,[13][14][15][16][17]. Because the phase adjustment can be realized through the change of frequency, the radiated beams can scan in the space as frequency changes [2].…”

Section: Introductionmentioning

confidence: 99%

Printed Frequency Scanning Antenna Array With Wide Scanning Angle Range

Jidi¹,

Cao²,

Zhu³

et al. 2018

PIER Letters

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Abstract-Leaky-wave radiations are usually generated by leaking the electromagnetic energy gradually over a structure. By using the coupling effect and leaky-wave properties, this paper designs a novel 1-D frequency scanning antenna array. The antenna is intended for the direct imaging radar sensors. The simulated results show that the scanning angle can stay in the range from −60 • to 30 • . The proposed 1-D antenna array was manufactured, and the measured results are consistent with the simulated ones.

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Spoof surface plasmon polariton‐fed circularly polarized leaky‐wave antenna with suppressed side‐lobe levels

Jiao

Weng

2019

Int J RF Microw Comput Aided Eng

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A wide-angle scanning circularly polarized (CP) leaky-wave antenna (LWA) with suppressed side-lobe levels (SLLs) is proposed, which can be a good candidate for future radar and wireless communication systems. The LWA consists of 12 cross slotted elliptical patch elements, which are fed by a microstrip spoof surface plasmon polariton (SSPP) line. Two fundamental modes of the patch array with two orthogonal polarizations can be excited by the electromagnetic coupling between the array and the SSPP line. By optimizing the elliptical eccentricity e and etching cross slots on the elliptical patch array, a 90 phase difference is introduced, and then, the CP radiation is realized. A tapered aperture field distribution is also realized by adjusting coupling intensities between the patch elements and the SSPP line, which is beneficial to reduce the SLLs. The electrical size of the LWA is 1.29λ 0 × 6.02λ 0 × 0.08λ 0 , where λ 0 is air wavelength at 12.9 GHz (broadside direction). Both the simulated and measured results indicate that the CP operating band is 12.0 to 15.0 GHz. The proposed CP LWA scans continuously from −14 to 38 . In the whole operating band, the axial ratios are less than 3 dB, and the SLLs are less than −20 dB as well.K E Y W O R D S circular polarization, leaky-wave antenna, low side-lobe levels, spoof surface plasmon polariton

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Dielectric Image Line-Based Leaky-Wave Antenna for Wide Range of Beam Scanning Through Broadside

Cited by 42 publications

References 14 publications

Wide scanning angle LWA based on DIL with H‐shaped grooves

Wide scanning angle LWA based on DIL with H‐shaped grooves

Printed Frequency Scanning Antenna Array With Wide Scanning Angle Range

Spoof surface plasmon polariton‐fed circularly polarized leaky‐wave antenna with suppressed side‐lobe levels

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