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Arrays of Annular A...
Arrays of Annular Antennas With SINIS Bolometers
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Tarasov, Mikhail (författare)
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Gunbina, Aleksandra A. (författare)
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- Mahashabde, Sumedh, 1985 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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Yusupov, Renat (författare)
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Chekushkin, Artem (författare)
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Nagirnaya, Daria (författare)
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Edelman, Valerian (författare)
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Yakopov, Grigory (författare)
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Vdovin, Vyacheslav E. (författare)
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(creator_code:org_t)
- 2020
- 2020
- Engelska.
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Ingår i: IEEE Transactions on Applied Superconductivity. - 1558-2515 .- 1051-8223. ; 30:3
- Relaterad länk:
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https://research.cha...
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- For improving the dynamic range and sensitivity at high power load, we have integrated superconductor-insulator-normal metal-insulator-superconductor (SINIS) bolometers with a frequency selective surface (FSS)-based distributed absorber formed by a series and parallel array consisting of 25 annular antenna elements, each containing two SINIS bolometers. By using a design with 50 bolometers, we reduce incident power load on each bolometer, increase sensitivity and saturation power which is important for ground-based and balloon-borne telescopes with high background power loads. Our main detector pixel is optimized for a frequency band centered at 345GHz. The detectors are matched to incoming telescope beam by a back-to-back horn with a back reflector. Such a configuration improves both the efficiency and the bandwidth of the receiver. Measured voltage responsivity approaches 210(9) VW with an amplifier-limited voltage noise of 20nVHz(12), which corresponds to a NEP 10(-17) WHz(12). The linear voltage response for incoming power is observed for absorbed power of about 5 pW. The current responsivity for parallel array is 210(4) AW and the shot noise limited intrinsic noise equivalent power is NEP 510(-18)WHz(12). The noise equivalent temperature difference is NETD 100 KHz(12) at 2.7-K background radiation temperature.
Ämnesord
- NATURVETENSKAP -- Fysik -- Acceleratorfysik och instrumentering (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Accelerator Physics and Instrumentation (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- Detectors
- Bolometers
- Antenna arrays
- bolometers
- Resistance
- Substrates
- submillimeter wave integrated circuits
- Cooling
- Cavity resonators
- Antenna arrays
- superconducting devices
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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