Wide-scan spherical-lens antennas for automotive radars

Schoenlinner, Bernhard; Wu, Xuecheng; Ebling, J.P.; Eleftheriades, George V.; Rebeiz, Gabriel M.

doi:10.1109/tmtt.2002.802331

Cited by 183 publications

(93 citation statements)

References 13 publications

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“…The performance of the focusing lens used in AMMW system directly affects the image quality. So far, the focusing lenses for MMW focal plane imaging are mainly made of polymer materials, such as Rexolite, polyethylene and Teflon [6][7][8]. However, lenses made of polymer material have not been widely used in practical applications [3].…”

Section: Introductionmentioning

confidence: 99%

Quasi-optical lens antenna made of electromagnetic-induction materials

Wang¹,

Mei²,

Liu³

et al. 2018

Proceedings of the 2nd International Forum on Management, Education and Information Technology Application (IFMEITA 2017)

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Abstract.A biconvex lens was designed and fabricated by embedding electromagnetic-induction materials (cage-shaped granules of conductor materials, CGC) in polymethyl methacrylate (PMMA). The CGC material has a refractive index of 1.504 at 35 GHz. The spatial resolution and depth of focus of the active millimeter wave (AMMW) imaging system were analyzed. Millimeter-wave (MMW) images of a square and two bars have been obtained with the biconvex lens. The image quality was acceptable, proving that the CGC material has the ability to refract MMWs in MMW imaging.

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Section: Introductionmentioning

confidence: 99%

Quasi-optical lens antenna made of electromagnetic-induction materials

Wang¹,

Mei²,

Liu³

et al. 2018

Proceedings of the 2nd International Forum on Management, Education and Information Technology Application (IFMEITA 2017)

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“…These features make LAs as attractive choices for various applications including radar crosssection (RCS) enhancers [1][2][3], satellite communication systems [4], automotive radars [5], and imaging systems at millimeter waves [6][7][8][9]. In the past decades, many analysis methods [10][11][12][13][14][15][16][17] and fabrication techniques [18][19][20][21][22][23][24] for LAs have been developed.…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization of Spherical Lens Antennas Including Practical Feed Models

Huang¹,

Yang²,

Xiong³

et al. 2011

PIER

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Abstract-A novel approach for the design and optimization of spherical lens antennas (SLAs) including practical feed model (PFM) is proposed. The vector spherical wave function expansions (VSWE) combined with differential evolution (DE) algorithm is adopted for the optimal design of SLAs. Moreover, the near-field aperture distributions of a Ku band dielectric loaded horn feed and a Ka band corrugated horn feed were obtained using the full wave simulation and were then taken into account in the DE optimization. The performances of the optimized 2-layer design are compared with previous works, higher directivity is obtained. Additionally, the radiation characteristics of an optimized SLA are presented, and numerical results of a 650 mm diameter 2-layer hemispherical lens antenna (HLA) with ground plane are compared to the experimental results, and good agreements are obtained. An investigation of the influence of the various lens-to-feed distances as well as aperture sizes of SLA on the aperture efficiency for a 2-layer design is also proposed.

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“…Integrated dielectric lens antennas (DLAs) fed by focal arrays are good candidates for imaging and wireless communication systems [1][2][3][4][5][6]. The desirable feature of such antennas is a stable beam profile for all feeds (with no directivity degradation for off-axis feeds) and also a high, near the diffraction limit, directivity for all the beams.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation Into the Design of Shaped Dielectric Lens Antennas With Improved Angular Characteristics

Boriskin¹,

Sauleau

2011

PIER B

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Abstract-The feasibility of designing a compact-size beam-switching dielectric lens antenna (DLA) with improved angular (scanning) characteristics is investigated numerically using in-house software based on the Muller boundary integral equations and hybrid genetic algorithm. It is demonstrated that joint optimization of the lens shape and feeding array parameters enables one to minimize the directivity degradation for off-axis feeds which is a well-known drawback of conventional extended hemielliptic DLAs fed by focal arrays. The key to success is found in proper shaping the lens profile and using arrays of non-identical feeds.

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Wide-scan spherical-lens antennas for automotive radars

Cited by 183 publications

References 13 publications

Quasi-optical lens antenna made of electromagnetic-induction materials

Quasi-optical lens antenna made of electromagnetic-induction materials

Design and Optimization of Spherical Lens Antennas Including Practical Feed Models

Numerical Investigation Into the Design of Shaped Dielectric Lens Antennas With Improved Angular Characteristics

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