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Planar Lens–Based Ultra-Wideband Dielectric Rod Waveguide Antenna for Tunable THz and Sub-THz Photomixer Sources
Spanish Natl Geog Inst, Yebes Observ, Yebes, Spain. ivera-Lavado, Alejandro; Garcia-Munoz, Luis-Enrique; Atia Abdalmalak, Kerlos; Santamaria-Botello, Gabriel; Segovia-Vargas, Daniel.
KTH, School of Electrical Engineering and Computer Science (EECS), Micro and Nanosystems.ORCID iD: 0000-0003-1443-403x
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2019 (English)In: Journal of Infrared, Millimeter and Terahertz Waves, ISSN 1866-6892, E-ISSN 1866-6906, Vol. 40, no 8, p. 838-855Article in journal (Refereed) Published
Abstract [en]

In this manuscript, the use of dielectric rod waveguide antenna (DRW) with an embedded planar lens is proposed as a highly directional alternative to an electrically large hyper-hemispheric silicon lens for emission at millimeter and sub-millimeter wave frequencies. DRW antennas radiate properly if only the fundamental mode is excited to the structure. Since photomixer-based terahertz sources excite many modes, single-lobe radiation patterns are obtained only for lower frequencies of their potential working band. The use of embedded planar lenses is proposed for rectifying the wavefront phase and suppressing such higher-order modes in DRW, allowing an ultra-wideband operation.

Place, publisher, year, edition, pages
Springer, 2019. Vol. 40, no 8, p. 838-855
Keywords [en]
Dielectric rod waveguide, Antenna, THz, High power terahertz, Photomixer, Antenna emitter, Embedded dielectric lenses
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-255736DOI: 10.1007/s10762-019-00612-1ISI: 000476611600003Scopus ID: 2-s2.0-85068896115OAI: oai:DiVA.org:kth-255736DiVA, id: diva2:1342660
Note

QC 20190814

Available from: 2019-08-14 Created: 2019-08-14 Last updated: 2019-08-14Bibliographically approved

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Lioubtchenko, Dmitri

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