Spectral characteristics of the double-folded slot antennas with cold-electron bolometers for the 220/240 GHz channels of the LSPE instrument
Journal article, 2021

We present the results of the experimental and theoretical study of the resonant properties and noise of a single cell of a receiving system based on cold-electron bolometers (CEB) with a double-folded slot antenna and coplanar lines. The system was designed to receive signals at 220/240 GHz frequencies with a 5% bandwidth. In measurements, we used the samples of the double-folded slot antennas with slot lengths of 162 um and coplanar line lengths from 185 to 360 um. Measurements of the resonance properties of CEB located at 0.3 K cryostat plate were carried out using a generator based on a high-temperature YBCO Josephson junction located inside the same cryostat at 4 K plate. This arrangement made it possible to obtain smooth amplitude-frequency characteristics with a clearly defined peak of a 15–21 GHz bandwidth at different frequencies. Based on these results, 2-D array of double-folded slot antennas with CEBs as 220/240 GHz LSPE channel prototype was calculated.The absorption efficiency of the array has reached 81% and 77% for 220 and 240 GHz channels, respectively.

Resonant properties

Coplanar line

YBaCuO

Double-folded slot antenna

Josephson junction

Cold-electron bolometer

Author

L. S. Revin

Nizhny Novgorod State Technical University

Russian Academy of Sciences

D. A. Pimanov

Nizhny Novgorod State Technical University

A. V. Blagodatkin

Russian Academy of Sciences

Nizhny Novgorod State Technical University

A. V. Gordeeva

Russian Academy of Sciences

Nizhny Novgorod State Technical University

A. L. Pankratov

Nizhny Novgorod State Technical University

Russian Academy of Sciences

A. V. Chiginev

Nizhny Novgorod State Technical University

Russian Academy of Sciences

I. V. Rakut

Nizhny Novgorod State Technical University

Russian Academy of Sciences

V. O. Zbrozhek

Nizhny Novgorod State Technical University

Leonid Kuzmin

Nizhny Novgorod State Technical University

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

S. Masi

Sapienza University of Rome

P. de Bernardis

Sapienza University of Rome

Applied Sciences (Switzerland)

20763417 (eISSN)

Vol. 11 22 10746

Subject Categories

Other Physics Topics

Other Electrical Engineering, Electronic Engineering, Information Engineering

Condensed Matter Physics

DOI

10.3390/app112210746

More information

Latest update

2/28/2022