Arrays of Annular Antennas With SINIS Bolometers
Artikel i vetenskaplig tidskrift, 2020

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.

Detectors

Bolometers

Antenna arrays

bolometers

Resistance

Substrates

submillimeter wave integrated circuits

Cooling

Cavity resonators

Antenna arrays

superconducting devices

Författare

Mikhail Tarasov

Kotelnikov Inst Radio Engn & Elect

Aleksandra A. Gunbina

Institute of Applied Physics Academy of Sciences of Moldava

Sumedh Mahashabde

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Renat Yusupov

Kotelnikov Inst Radio Engn & Elect

Artem Chekushkin

Kotelnikov Inst Radio Engn & Elect

Daria Nagirnaya

Kotelnikov Inst Radio Engn & Elect

Valerian Edelman

Kapitza Institute for Physical Problems RAS

Grigory Yakopov

Big Altazimuth Telescope

Vyacheslav E. Vdovin

Institute of Applied Physics Academy of Sciences of Moldava

IEEE Transactions on Applied Superconductivity

1051-8223 (ISSN)

Vol. 30 3

Ämneskategorier

Acceleratorfysik och instrumentering

Annan elektroteknik och elektronik

DOI

10.1109/TASC.2019.2941857

Mer information

Senast uppdaterat

2020-12-16