A chemically etched corrugated feedhorn array for D-band CMB observations
| Autor: | Giorgio Pettinari, A. Volpe, E. Tommasi, D. Viganò, Massimo Gervasi, A. Passerini, F. Piacentini, E. Manzan, Alessandro Paiella, Marco Castellano, Cristian Franceschet, Luca Lamagna, S. Mandelli, A. Limonta, Marco Bersanelli, Mario Zannoni, Francesco Cavaliere, P. de Bernardis, Silvia Masi, Alessandro Coppolecchia, Angelo Cruciani, A. Mennella |
|---|---|
| Přispěvatelé: | Mandelli, S, Manzan, E, Mennella, A, Cavaliere, F, Viganò, D, Franceschet, C, de Bernardis, P, Bersanelli, M, Castellano, M, Coppolecchia, A, Cruciani, A, Gervasi, M, Lamagna, L, Limonta, A, Masi, S, Paiella, A, Passerini, A, Pettinari, G, Piacentini, F, Tommasi, E, Volpe, A, Zannoni, M |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Cosmic microwave background FOS: Physical sciences B-modes chemical etching CMB polarization corrugated feedhorn antennas platelet manufacturing FIS/05 - ASTRONOMIA E ASTROFISICA Optics D band Etching (microfabrication) Instrumentation and Methods for Astrophysics (astro-ph.IM) business.industry Detector Astronomy and Astrophysics Chemical etching Polarization (waves) Isotropic etching Orthomode transducer Platelet manufacturing B-mode Space and Planetary Science Return loss Corrugated feedhorn antenna business Astrophysics - Instrumentation and Methods for Astrophysics |
| Zdroj: | Experimental astronomy (2021). doi:10.1007/s10686-021-09698-9 info:cnr-pdr/source/autori:Mandelli, S.; Manzan, E.; Mennella, A.; Cavaliere, F.; Viganò, D.; Franceschet, C.; de Bernardis, P.; Bersanelli, M.; Castellano, M. G.; Coppolecchia, A.; Cruciani, A.; Gervasi, M.; Lamagna, L.; Limonta, A.; Masi, S.; Paiella, A.; Passerini, A.; Pettinari, G.; Piacentini, F.; Tommasi, E.; Volpe, A.; Zannoni, M./titolo:A chemically etched corrugated feedhorn array for D-band CMB observations/doi:10.1007%2Fs10686-021-09698-9/rivista:Experimental astronomy (Print)/anno:2021/pagina_da:/pagina_a:/intervallo_pagine:/volume |
| DOI: | 10.48550/arxiv.2006.14889 |
| Popis: | We present the design, manufacturing, and testing of a 37-element array of corrugated feedhorns for Cosmic Microwave Background CMB) measurements between 140 and 170 GHz. The array was designed to be coupled to Kinetic Inductance Detector arrays, either directly (for total power measurements) or through an orthomode transducer (for polarization measurements). We manufactured the array in platelets by chemically etching aluminum plates of 0.3 mm and 0.4 mm thickness. The process is fast, low-cost, scalable, and yields high-performance antennas compared to other techniques in the same frequency range. Room temperature electromagnetic measurements show excellent repeatability with an average cross polarization level about − 20 dB, return loss about − 25 dB, first sidelobes below − 25 dB and far sidelobes below − 35 dB. Our results qualify this process as a valid candidate for state-of-the-art CMB experiments, where large detector arrays with high sensitivity and polarization purity are of paramount importance in the quest for the discovery of CMB polarizationB-modes. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|