Title :
Phase shifting in a Josephson junction active antenna array
Author :
Yukon, Stanford P. ; Lin, Freeman C.
Author_Institution :
Air Force Res. Lab./SNHE, Hanscom AFB, MA, USA
fDate :
3/1/2001 12:00:00 AM
Abstract :
We present a design for an active antenna array employing triangular Josephson junction (JJ) sub-arrays as rf oscillator sources. The sub-arrays are kept in sync by coupling to a closed serpentine discrete JJ ladder. Phase shifts are introduced by adding external magnetic flux into the JJ ladders between sub-arrays. Phase shifting distortions are minimized by allowing only two contiguous sub-arrays on any row segment
Keywords :
Josephson effect; active antenna arrays; phase shifters; RF oscillator; active antenna array; magnetic flux; phase shifter; serpentine discrete ladder; synchronization; triangular Josephson junction sub-array; Antenna arrays; Equations; Inductance; Josephson junctions; Magnetic flux; Oscillators; Phase distortion; Phased arrays; Radiofrequency integrated circuits; Telephony;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
