Low-THz Dielectric Lens Antenna with Integrated Waveguide Feed

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@article{395b73a317d04d0ca4fe099b7a5446db,
title = "Low-THz Dielectric Lens Antenna with Integrated Waveguide Feed",
abstract = "A novel dielectric lens antenna with a broadband integrated waveguide-based feed and an optimized tapered extension is presented for low TeraHertz frequencies. The antenna consists of an extended hemispherical lens fed by a standard WR-3 rectangular waveguide fitted directly at the bottom of the lens. The antenna has been designed for high resolution imaging radar systems requiring very wide bandwidth performance and highly directive beams. A novel matching technique based on an air pocket etched off the lens dielectric is employed to obtain broadband antenna operation covering the entire dominant-mode bandwidth of the waveguide. In addition, a new taper shaped lens extension is proposed for the first time and optimized to achieve improved sidelobe level and gain performance. The antenna is compatible with newly developed waveguide-based automotive radar and communications systems. The operating 3dB gain bandwidth is 30{\%} (230GHz - 310GHz) achieving a maximum of 30dB measured gain. The measured S11 is well below -14dB across the WR-3 band.",
keywords = "integrated lens antennas, submillimeter wave , imaging systems",
author = "Konstantinos Konstantinidis and Alexandros Feresidis and Costas Constantinou and Edward Hoare and Marina Gashinova and Michael Lancaster and Peter Gardner",
year = "2017",
month = "7",
day = "20",
doi = "10.1109/TTHZ.2017.2725487",
language = "English",
pages = "572 -- 581",
journal = "IEEE Transactions on Terahertz Science and Technology",
issn = "2156-342X",
publisher = "IEEE Xplore",

}

RIS

TY - JOUR

T1 - Low-THz Dielectric Lens Antenna with Integrated Waveguide Feed

AU - Konstantinidis, Konstantinos

AU - Feresidis, Alexandros

AU - Constantinou, Costas

AU - Hoare, Edward

AU - Gashinova, Marina

AU - Lancaster, Michael

AU - Gardner, Peter

PY - 2017/7/20

Y1 - 2017/7/20

N2 - A novel dielectric lens antenna with a broadband integrated waveguide-based feed and an optimized tapered extension is presented for low TeraHertz frequencies. The antenna consists of an extended hemispherical lens fed by a standard WR-3 rectangular waveguide fitted directly at the bottom of the lens. The antenna has been designed for high resolution imaging radar systems requiring very wide bandwidth performance and highly directive beams. A novel matching technique based on an air pocket etched off the lens dielectric is employed to obtain broadband antenna operation covering the entire dominant-mode bandwidth of the waveguide. In addition, a new taper shaped lens extension is proposed for the first time and optimized to achieve improved sidelobe level and gain performance. The antenna is compatible with newly developed waveguide-based automotive radar and communications systems. The operating 3dB gain bandwidth is 30% (230GHz - 310GHz) achieving a maximum of 30dB measured gain. The measured S11 is well below -14dB across the WR-3 band.

AB - A novel dielectric lens antenna with a broadband integrated waveguide-based feed and an optimized tapered extension is presented for low TeraHertz frequencies. The antenna consists of an extended hemispherical lens fed by a standard WR-3 rectangular waveguide fitted directly at the bottom of the lens. The antenna has been designed for high resolution imaging radar systems requiring very wide bandwidth performance and highly directive beams. A novel matching technique based on an air pocket etched off the lens dielectric is employed to obtain broadband antenna operation covering the entire dominant-mode bandwidth of the waveguide. In addition, a new taper shaped lens extension is proposed for the first time and optimized to achieve improved sidelobe level and gain performance. The antenna is compatible with newly developed waveguide-based automotive radar and communications systems. The operating 3dB gain bandwidth is 30% (230GHz - 310GHz) achieving a maximum of 30dB measured gain. The measured S11 is well below -14dB across the WR-3 band.

KW - integrated lens antennas

KW - submillimeter wave

KW - imaging systems

U2 - 10.1109/TTHZ.2017.2725487

DO - 10.1109/TTHZ.2017.2725487

M3 - Article

SP - 572

EP - 581

JO - IEEE Transactions on Terahertz Science and Technology

JF - IEEE Transactions on Terahertz Science and Technology

SN - 2156-342X

ER -