A numerical modeling of a multi-frequency receiving system based on an array of dipole antennas with cold-electron bolometers for LSPE-SWIPE

Submitting author affiliation:
Nizhny Novgorod State Technical University n.a. R.E. Alekseev, Nizhny Novgorod, Russian Federation

Beilstein Arch. 2022, 202254. https://doi.org/10.3762/bxiv.2022.54.v1

Published 27 Jun 2022

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We present the results of numerical modeling of mode composition in the constriction of the LSPE-SWIPE back-to-back horn. These results are used for calculating the frequency response of arrays of planar dipole antennas with cold-electron bolometers for frequencies 145, 210 and 240 GHz. For the main frequency channel, 145 GHz, we have 45 GHz bandwidth. For the auxiliary frequency channels, 210 and 240 GHz, placed on the same substrate, we have 26 GHz and 38 GHz bandwidth, correspondingly. We have performed some optimizations for cold-electron bolometers to achieve photon NEP at the level of 1.1×10-16 W/Hz1/2. This was achieved by replacing one of two SIN tunnel junctions with the SN contact.

Keywords: cold-electron bolometer; CMB; dipole antenna; waveguide horn; dichroic antenna

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Chiginev, A. V.; Blagodatkin, A. V.; Pimanov, D. A.; Matrozova, E. A.; Gordeeva, A. V.; Pankratov, A. L.; Kuzmin, L. S. Beilstein Arch. 2022, 202254. doi:10.3762/bxiv.2022.54.v1

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