2018/10/22 by M. Kiviranta, Kiviranta, Mikko, Leif Grönberg +3
Chemistry · Engineering · Physics and Astronomy · #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Instrumentation and Methods for Astrophysics (astro-ph.IM) #Physics of Superconductivity and Magnetism #Radio Frequency Integrated Circuit Design #Spectroscopy and Laser Applications #Superconducting and THz Device Technology #Superconductivity (cond-mat.supr-con)
paper · pdf · doi:10.48550/arxiv.1810.09122
openalex publication_date 2018/10/22 · openalex created_date 2022/08/02 · openalex updated_date 2026/07/28
Frequency Domain Multiplexed detector arrays constructed of superconducting\nTransition Edge Sensors in the current-summing configuration suffer from the\nfinite impedance of the summing node which should ideally be zero. We suggest\ntwo circuits to alleviate the effect. The first circuit uses a capacitive\nresonant transformer to increase the voltages and decrease the currents of TES\nsignals to overcome the parasitic inductance of the interconnections. On the\nSQUID chip impedance transform to the opposite direction takes place. The\nsecond circuit implements a power combiner having a better branch-to-branch\nisolation than a simple T-junction. Two SQUID devices have been designed and\nfabricated for a proof-of-principle demonstration of the circuits.\n