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A True Optoelectronic Spectrum Analyzer for Millimeter Waves With Hz Resolution

Fernandez Olvera, Anuar De Jesus ; Krause, Benedikt Leander ; Preu, Sascha (2021):
A True Optoelectronic Spectrum Analyzer for Millimeter Waves With Hz Resolution. (Publisher's Version)
In: IEEE Access, 9, pp. 114339-114347. ISSN 2169-3536,
DOI: 10.26083/tuprints-00019461,

Available under: CC BY 4.0 International - Creative Commons, Attribution.

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Item Type: Article
Origin: Secondary publication via sponsored Golden Open Access
Status: Publisher's Version
Title: A True Optoelectronic Spectrum Analyzer for Millimeter Waves With Hz Resolution
Language: English

We present an architecture for millimeter-wave spectrum analyzers with Hz resolution and precision based on heterodyne down-conversion using ErAs:InGaAs photoconductive mixers driven by a tunable ultra-narrow linewidth continuous-wave (CW) photonic local oscillator. Unlike previous optoelectronic or electronic architectures, there is no requirement for an external electronic spectrum analyzer or any frequency extenders, keeping the system less complex and less expensive. We demonstrate the architecture for a frequency range that surpasses the E-band range by 10 GHz, i.e. from 50 to 90 GHz, but it is easily extendable to frequencies beyond 300 GHz or to frequencies as low as 25 GHz. A minimum power of 300 fW at 72 GHz was detected when using a resolution bandwidth of 1 Hz.

Journal or Publication Title: IEEE Access
Volume of the journal: 9
Place of Publication: Darmstadt
Classification DDC: 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Divisions: 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP) > Terahertz Devices and Systems
Date Deposited: 23 Sep 2021 08:03
Last Modified: 23 Aug 2022 12:51
DOI: 10.26083/tuprints-00019461
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-194619
Additional Information:

INDEX TERMS CW photoconductive detectors, ErAs:In(Al)GaAs photoconductors, photomixers, spectrum analyzer, millimeter waves.

URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/19461
PPN: 494646462
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