Titel: How accurate do you know your power at 300 GHz?
Autoren: Röben, Benjamin, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 7.3, Detektorradiometrie u. Strahlungsthermometrie, ORCID: 0000-0003-4356-5741
Steiger, Andreas, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 7.3, Detektorradiometrie u. Strahlungsthermometrie, ORCID: 0000-0001-6184-2074
Lange, Jens Karsten, SLT Senor und Lasertechnik GmbH, Wildau
Gellie, Pierre, Lytid SAS, Paris, FRANCE
Mondal, Priyanka, Lytid SAS, Paris, FRANCE
Beitragende: HostingInstitution: Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887
Sprache:en
DOI:10.7795/810.20240730
Art der Ressource: Text / Poster
Herausgeber: Physikalisch-Technische Bundesanstalt (PTB)
Rechte: Download for personal/private use only, if your national copyright law allows this kind of use.
Daten: Verfügbar: 2024-07-30
Datei: Datei herunterladen (application/pdf) 571.37 kB (585083 Bytes)
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Schlagworte THz power ; traceable to SI ; THz detector ; WR-3 Band ; 6G
Zusammenfassung: How exactly do you know your power at 300 GHz?
This question was the title of a poster presentation at MTSA 2024 - the 6th International Symposium on Microwave /THz Science and Applications from June 4-7, 2024, in Copenhagen.
PTB, Germany's national metrology institute, presented the result of a collaboration with the French company Lytid SAS and the German company SLT Sensor- und Lasertechnik GmbH: the development of a terahertz detector which can measure the power of a waveguide source in the W-band with frequencies from 220 GHz to 300 GHz traceable to the Internal System of Units SI for the first time.
The novel detector measures the radiated power of the waveguide source directly at the antenna output without the need for imaging optics. To avoid interfering standing waves caused by back reflections into the antenna, the absorbing detector surface is tilted by 45 degrees and the reflection is absorbed in the detector housing. We have found that this detector arrangement does not measurably affect the emission of the antenna. In addition, the divergence of the emission is sufficiently small that the entire beam profile can be measured despite the tilted aperture of the detector.
The cooperating companies intend to offer the new detector with a special antenna adapter together with an individual calibration certificate from PTB. This will close the traceability gap between the waveguide-based power measurements below the WR-3 band and in free space for the frequencies above, which is important for future 6G mobile communications.
These results were achieved as part of the Franco-German cooperation project SCAFT (Secure communication at 6G frequencies through precise THz power measurements). The German participants received funding from the Central Innovation Program for SMEs (ZIM) of the Federal Ministry of Economics and Climate Action based on a decision by the German Bundestag under the funding codes KK5104902AB0 and KK5114801AB0.