Low-THz Dielectric Lens Antenna with Integrated Waveguide Feed

Konstantinos Konstantinidis; Alexandros Feresidis; Costas Constantinou; Edward Hoare; Marina Gashinova; Michael Lancaster; Peter Gardner

doi:10.1109/TTHZ.2017.2725487

Low-THz Dielectric Lens Antenna with Integrated Waveguide Feed

Konstantinos Konstantinidis, Alexandros Feresidis, Costas Constantinou, Edward Hoare, Marina Gashinova, Michael Lancaster, Peter Gardner

Electronic, Electrical and Systems Engineering

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

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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.

Original language	English
Pages (from-to)	572 - 581
Journal	IEEE Transactions on Terahertz Science and Technology
Volume	7
Issue number	5
Early online date	20 Jul 2017
DOIs	https://doi.org/10.1109/TTHZ.2017.2725487
Publication status	Published - 20 Jul 2017

Keywords

integrated lens antennas
submillimeter wave
imaging systems

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Konstantinidis_et_al_Low-THz_dielectric_lens_IEEE_Transactions_on_Terahertz_Science_&_Technology_2017
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Accepted author manuscript, 1.05 MBLicence: Other (please specify with Rights Statement)

Micromachined Circuits For Terahertz Communications
Lancaster, M., Constantinou, C., Dimov, S., Feresidis, A., Gardner, P., Cherniakov, M., Gashinova, M. & Huang, F.
Engineering & Physical Science Research Council
22/06/15 → 22/12/18
Project: Research
Terahertz Technology for Future Road Vehicles (TRAVEL)
Gardner, P., Constantinou, C., Feresidis, A., Gashinova, M., Cherniakov, M. & Lancaster, M.
Engineering & Physical Science Research Council
30/06/14 → 31/12/18
Project: Research

Cite this

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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.",

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author = "Konstantinos Konstantinidis and Alexandros Feresidis and Costas Constantinou and Edward Hoare and Marina Gashinova and Michael Lancaster and Peter Gardner",

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AU - Feresidis, Alexandros

AU - Constantinou, Costas

AU - Hoare, Edward

AU - Gashinova, Marina

AU - Lancaster, Michael

AU - Gardner, Peter

PY - 2017/7/20

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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.

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KW - submillimeter wave

KW - imaging systems

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Low-THz Dielectric Lens Antenna with Integrated Waveguide Feed

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Keywords

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Projects

Micromachined Circuits For Terahertz Communications

Terahertz Technology for Future Road Vehicles (TRAVEL)

Cite this