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.

Bolometers

Substrates

Cavity resonators

superconducting devices

Detectors

submillimeter wave integrated circuits

Cooling

Antenna arrays

Antenna arrays

bolometers

Resistance

Författare

Mikhail Tarasov

Kotelnikov Inst Radio Engn & Elect

Aleksandra A. Gunbina

Inst Appl Phys

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

Inst Appl Phys

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

2019-11-11