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.
Spectral characteristics of the double-folded slot antennas with cold-electron bolometers for the 220/240 GHz channels of the LSPE instrument / Revin, L. S.; Pimanov, D. A.; Blagodatkin, A. V.; Gordeeva, A. V.; Pankratov, A. L.; Chiginev, A. V.; Rakut', I. V.; Zbrozhek, V. O.; Kuzmin, L. S.; Masi, S.; de Bernardis, P.. - In: APPLIED SCIENCES. - ISSN 2076-3417. - 11:22(2021), p. 10746. [10.3390/app112210746]
Spectral characteristics of the double-folded slot antennas with cold-electron bolometers for the 220/240 GHz channels of the LSPE instrument
Masi S.Methodology
;de Bernardis P.Validation
2021
Abstract
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.| File | Dimensione | Formato | |
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