Title :
Linear Bi-SQUID Arrays for Electrically Small Antennas
Author :
Kornev, Victor K. ; Soloviev, Igor I. ; Klenov, Nikolay V. ; Sharafiev, Alexey V. ; Mukhanov, Oleg A.
Author_Institution :
Moscow State Univ., Moscow, Russia
fDate :
6/1/2011 12:00:00 AM
Abstract :
Recently we proposed so-called bi-SQUID based on a 3-junction SQUID circuit capable of providing highly linear voltage response. In this report, we present the experimental evaluation of series arrays of 20 and 128 bi-SQUIDs fabricated with a 4.5 kA/cm2 Nb process as well as a prototype of an active electrically small antenna based on series array of 12 bi-SQUIDs. Both the origins of imperfections of the observed response linearity and the possible ways of the linearity improvement are discussed.
Keywords :
SQUIDs; active antennas; superconducting arrays; active electrically small antenna; linear bi-SQUID array; linear voltage response; series array; three-junction SQUID circuit; Antenna arrays; Critical current; Inductance; Magnetic tunneling; SQUIDs; Superconducting magnets; Voltage measurement; Bi-SQUID; Josephson junctions; SQIF; SQUID; electrically small antenna; high linearity; voltage response;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2010.2091711
