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

Alexander V. Chiginev; Anton V. Blagodatkin; D. A. Pimanov; Ekaterina A. Matrozova; Anna V. Gordeeva; Andrey L. Pankratov; Leonid 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
Artikel i vetenskaplig tidskrift, 2022

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 op-timizations for cold-electron bolometers to achieve a photon noise-equivalent power of 1.1 x 10-16 W/Hz1/2. This was achieved by replacing one of two superconductor-insulator-normal tunnel junctions with a superconductor-normal metal contact.

LSPE-SWIPE

waveguide horn

dichroic antenna

cold-electron bolometer

cosmic microwave background (CMB)

dipole antenna