Title :
Low Loss Superconducting Microstrip Development at Argonne National Lab
Author :
Chang, C.L. ; Ade, P.A.R. ; Ahmed, Z. ; Allen, S.W. ; Arnold, K. ; Austermann, J.E. ; Bender, A.N. ; Bleem, L.E. ; Benson, B.A. ; Carlstrom, J.E. ; Cho, H.M. ; Ciocys, S.T. ; Cliche, J.F. ; Crawford, T.M. ; Cukierman, A. ; Ding, J. ; de Haan, T. ; Dobbs,
Author_Institution :
High-Energy Phys. Div., Argonne Nat. Lab., Argonne, IL, USA
Abstract :
Low loss superconducting microstrip is an essential component in realizing 100 kilo-pixel multichroic cosmic microwave background detector arrays. We have been developing a low loss microstrip by understanding and controlling the loss mechanisms. We present the fabrication of the superconducting microstrip, the loss measurements at a few GHz frequencies using half-wavelength resonators, and the loss measurements at 220 GHz frequencies with the superconducting microstrip coupled to slot antennas at one end and to TES detectors at the other end. The measured loss tangent of the microstrip made of sputtered Nb and SiOx is 1-2e-3.
Keywords :
dielectric losses; microstrip lines; radiofrequency cosmic radiation; slot antennas; superconducting microwave devices; Nb; SiOx; TES detectors; frequency 220 GHz; half-wavelength resonators; loss measurements; loss mechanisms; loss tangent; low loss superconducting microstrip development; multichroic cosmic microwave background detector arrays; slot antennas; Detectors; Frequency measurement; Loss measurement; Microstrip; Superconducting transmission lines; Temperature measurement; Transmission line measurements; Dielectric loss; Superconductivity; dielectric loss; half-wavelength resonator; superconductivity; transition edge sensor;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2014.2369231
