Air-bridged Schottky diodes for dynamically tunable millimeter-wave metamaterial phase shifters

Abstract A low loss metamaterial unit cell is presented with an integrated GaAs air-bridged Schottky diode to produce a dynamically tunable reflective phase shifter that is capable of up to 250° phase shift with an experimentally measured average loss of 6.2 dB at V-band. The air-bridged Schottky di...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Evangelos Vassos, James Churm, Jeff Powell, Colin Viegas, Byron Alderman, Alexandros Feresidis
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/45b64ed8fb56452cac0ea51468a675e7
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:45b64ed8fb56452cac0ea51468a675e7
record_format	dspace
spelling	oai:doaj.org-article:45b64ed8fb56452cac0ea51468a675e72021-12-02T16:30:24ZAir-bridged Schottky diodes for dynamically tunable millimeter-wave metamaterial phase shifters10.1038/s41598-021-85565-z2045-2322https://doaj.org/article/45b64ed8fb56452cac0ea51468a675e72021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-85565-zhttps://doaj.org/toc/2045-2322Abstract A low loss metamaterial unit cell is presented with an integrated GaAs air-bridged Schottky diode to produce a dynamically tunable reflective phase shifter that is capable of up to 250° phase shift with an experimentally measured average loss of 6.2 dB at V-band. The air-bridged Schottky diode provides a tuneable capacitance in the range between 30 and 50 fF under an applied reverse voltage bias. This can be used to alter the resonant frequency and phase response of a split patch unit cell of a periodic metasurface. The air-bridged diode die, which is flip-chip soldered to the patch, has ultra-low parasitic capacitance and resistance. Simulated and measured results are presented which verify the potential for the attainment of diode switching speeds with acceptable losses at mmWave frequencies. Furthermore the study shows that this diode-based unit cell can be integrated into metamaterial components, which have potential applications in future mmWave antenna beam-steering, intelligent reflecting surfaces for 6G communications, reflect-arrays, transmit-arrays or holographic antennas.Evangelos VassosJames ChurmJeff PowellColin ViegasByron AldermanAlexandros FeresidisNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Evangelos Vassos James Churm Jeff Powell Colin Viegas Byron Alderman Alexandros Feresidis Air-bridged Schottky diodes for dynamically tunable millimeter-wave metamaterial phase shifters
description	Abstract A low loss metamaterial unit cell is presented with an integrated GaAs air-bridged Schottky diode to produce a dynamically tunable reflective phase shifter that is capable of up to 250° phase shift with an experimentally measured average loss of 6.2 dB at V-band. The air-bridged Schottky diode provides a tuneable capacitance in the range between 30 and 50 fF under an applied reverse voltage bias. This can be used to alter the resonant frequency and phase response of a split patch unit cell of a periodic metasurface. The air-bridged diode die, which is flip-chip soldered to the patch, has ultra-low parasitic capacitance and resistance. Simulated and measured results are presented which verify the potential for the attainment of diode switching speeds with acceptable losses at mmWave frequencies. Furthermore the study shows that this diode-based unit cell can be integrated into metamaterial components, which have potential applications in future mmWave antenna beam-steering, intelligent reflecting surfaces for 6G communications, reflect-arrays, transmit-arrays or holographic antennas.
format	article
author	Evangelos Vassos James Churm Jeff Powell Colin Viegas Byron Alderman Alexandros Feresidis
author_facet	Evangelos Vassos James Churm Jeff Powell Colin Viegas Byron Alderman Alexandros Feresidis
author_sort	Evangelos Vassos
title	Air-bridged Schottky diodes for dynamically tunable millimeter-wave metamaterial phase shifters
title_short	Air-bridged Schottky diodes for dynamically tunable millimeter-wave metamaterial phase shifters
title_full	Air-bridged Schottky diodes for dynamically tunable millimeter-wave metamaterial phase shifters
title_fullStr	Air-bridged Schottky diodes for dynamically tunable millimeter-wave metamaterial phase shifters
title_full_unstemmed	Air-bridged Schottky diodes for dynamically tunable millimeter-wave metamaterial phase shifters
title_sort	air-bridged schottky diodes for dynamically tunable millimeter-wave metamaterial phase shifters
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/45b64ed8fb56452cac0ea51468a675e7
work_keys_str_mv	AT evangelosvassos airbridgedschottkydiodesfordynamicallytunablemillimeterwavemetamaterialphaseshifters AT jameschurm airbridgedschottkydiodesfordynamicallytunablemillimeterwavemetamaterialphaseshifters AT jeffpowell airbridgedschottkydiodesfordynamicallytunablemillimeterwavemetamaterialphaseshifters AT colinviegas airbridgedschottkydiodesfordynamicallytunablemillimeterwavemetamaterialphaseshifters AT byronalderman airbridgedschottkydiodesfordynamicallytunablemillimeterwavemetamaterialphaseshifters AT alexandrosferesidis airbridgedschottkydiodesfordynamicallytunablemillimeterwavemetamaterialphaseshifters
_version_	1718383926784819200

Air-bridged Schottky diodes for dynamically tunable millimeter-wave metamaterial phase shifters

Ejemplares similares