Wideband Double-Polarized Array of Cold-Electron Bolometers for OLIMPO Balloon Telescope
Artikel i vetenskaplig tidskrift, 2021

In this article, we propose a novel type of a wideband 2-D array of cold-electron bolometers (CEBs) sensitive to both polarizations of the incoming optical signal. This array was developed for osservatorio per il lontano infrarosso e le microonde su pallone orientabile (OLIMPO) balloon telescope with a requirement on bandwidth more than 10%. Sensitivity to both polarization components was achieved by a special meander-type arrangement of orthogonal L/2 dipoles. We present theoretical estimations for the optimal arrangement of 2-D arrays of CEBs, which allows achieving maximum efficiency in a wide band with the lowest noise equivalent power (NEP). A pixel layout with an optimal density of CEBs, sensitive to dual polarizations, and having more than 10% FWHM bandwidth at around 350 GHz was proposed and numerically analyzed. The layout consists of a periodic sparse array of orthogonal dipoles sensitive to both polarization components of the incoming signal. The numerical analysis confirmed that the sparse array is the most promising for a combination of high absorbing efficiency and low noise of the system and satisfying the 10% bandwidth requirements for the OLIMPO instrument. Different combinations of series and parallel connections of bolometers were considered for better noise properties to achieve the photon noise-limited level.

sparse array

dense array

double polarized array

optical power load

Cold-electron bolometers (CEBs)

noise equivalent power (NEP)

frequency-selective surfaces (FSS)


Leonid Kuzmin

Nizhny Novgorod State Technical University

Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik

Alexander Sobolev

National Research University of Electronic Technology (MIET)

Moscow Institute of Physics and Technology

B. Beiranvand

Moscow Institute of Physics and Technology

IEEE Transactions on Antennas and Propagation

0018926x (ISSN) 15582221 (eISSN)

Vol. 69 3 1427-1432 9210794


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