Numerical modeling of a multi-frequency receiving system based on an array of dipole antennas for LSPE-SWIPE

Alexander V Chiginev; Anton V Blagodatkin; Dmitrii A Pimanov; Ekaterina A Matrozova; Anna V Gordeeva; Andrey L Pankratov; Leonid S Kuzmin

doi:10.3762/bjnano.13.77

Numerical modeling of a multi-frequency receiving system based on an array of dipole antennas for LSPE-SWIPE

Beilstein J Nanotechnol. 2022 Sep 1:13:865-872. doi: 10.3762/bjnano.13.77. eCollection 2022.

Authors

Alexander V Chiginev^{1

2}, Anton V Blagodatkin¹, Dmitrii A Pimanov^{1

3}, Ekaterina A Matrozova¹, Anna V Gordeeva^{1

2}, Andrey L Pankratov^{1

2}, Leonid S Kuzmin^{1

3}

Affiliations

¹ Nizhny Novgorod State Technical University, Nizhny Novgorod, Minin Street, 24, 603950, Russia.
² Institute for Physics of Microstructures of the Russian Academy of Sciences, GSP-105, Nizhny Novgorod, 603950, Russia.
³ Chalmers University of Technology, Department of Microtechnology and Nanoscience - MC2, Gothenburg, SE-412 96, Sweden.

Abstract

Here we present the results of a numerical modeling of mode composition in the constriction of the Large Scale Polarization Explorer-Short-Wavelength Instrument for the Polarization Explorer (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 145, 210, and 240 GHz frequencies. For the main frequency channel (i.e., 145 GHz) we have a 45 GHz bandwidth. For the auxiliary frequency channels (i.e., 210 and 240 GHz) placed on the same substrate, we have bandwidths of 26 and 38 GHz, respectively. We performed some optimizations for cold-electron bolometers to achieve a photon noise-equivalent power of 1.1 × 10^-16 W/Hz^1/2. This was achieved by replacing one of two superconductor-insulator-normal tunnel junctions with a superconductor-normal metal contact.

Keywords: LSPE-SWIPE; cold-electron bolometer; cosmic microwave background (CMB); dichroic antenna; dipole antenna; waveguide horn.

Grants and funding

This work has been supported by the Russian Science Foundation (Grant #21-79-20227).