Process of nonstationary reflection of
short electromagnetic pulses from the maximally flat multilayer filters
A. V. Kozar, A.V. Trofimov, A. A. Potapov
Faculty
of Physics of Lomonosov Moscow State University
The paper is
received on March26, 2016
Abstract. In the paper a method based on Josephson spectroscopy for local
measurement of real dielectric permittivity of different materials with low
losses is demonstrated. Dielectric permittivities of r-cut sapphire εsapphire = 9.6 at f=155,2 GHz and (001) NdGaO3 εNGO = 23 at f=106,4 GHz are obtained.
Key words: terahertz electronics, superconductivity, Josephson junction.