Photonic-assisted 2-D terahertz beam steering enabled by a LWA array monolithically integrated with a BFN
Fecha
2022Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión publicada / Argitaratu den bertsioa
Identificador del proyecto
Impacto
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10.1364/OE.468200
Resumen
A novel photonic-assisted 2-D Terahertz beam steering chip using only two tuning
elements is presented. The chip is based on an array of three leaky wave antennas (LWAs) with
a monolithically integrated beamforming network (BFN) on a 50 µm-thick indium phosphide
substrate. The THz beam angle in elevation (E-plane) is controlled via optical frequency tuning
using a tunable dual-wavelength lase ...
[++]
A novel photonic-assisted 2-D Terahertz beam steering chip using only two tuning
elements is presented. The chip is based on an array of three leaky wave antennas (LWAs) with
a monolithically integrated beamforming network (BFN) on a 50 µm-thick indium phosphide
substrate. The THz beam angle in elevation (E-plane) is controlled via optical frequency tuning
using a tunable dual-wavelength laser. An optical delay line is used for azimuth (H-plane) beam
control. The simulated beam scanning range is 92° in elevation for a frequency sweep from
0.23 THz to 0.33 THz and 69.18° in azimuth for a time delay of 3.6 ps. For the frequency range
from 0.26 THz to 0.32 THz, it is confirmed experimentally that the THz beam scans from −12°
to +33°, which is in good agreement with the numerical simulations. The beam direction in
azimuth scans with a total angle of 39° when applying a delay difference of 1.68 ps. A good
agreement is found between theoretically predicted and experimentally determined THz beam
angles with a maximum angle deviation below 5°. The experimental scanning angles are limited
due to the mechanical constraints of the on-wafer probes, the on-chip integrated transition and
the bandwidth of the THz receiver LNA. The mechanical limitation will be overcome when using
a packaged chip. [--]
Materias
Photonic-assisted 2-D terahertz beam steering chip,
Leaky wave antennas (LWAs),
Beamforming network (BFN)
Editor
Optica
Publicado en
Optics Express, 30(21), 38596-38612
Departamento
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica, Electrónica y de Comunicación /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza Saila /
Universidad Pública de Navarra/Nafarroako Unibertsitate Publikoa. Institute of Smart Cities - ISC
Versión del editor
Entidades Financiadoras
Deutsche Forschungsgemeinschaft (Project-ID 287022738– CRC/TRR 196(Project C07)); Bundesministerium für Bildung und Forschung (6GEM, grant No. EFRE-0400215, grant No.16KISK017, grant No.16KISK039,
NRW/EFRE Terahertz-Integrationszentrum (THzIZ), Open6GHub); Agencia Estatal de Investigación (/MCIN/AEI/
10.13039/501100011033, PID2019-109984RB-C43/AEI/10.13039/501100011033, PID2020-112545RB-C53); Ministerio de Ciencia e Innovación (FPU Program 00013/2018).