K.V. Kalashnikov - Post-graduate Student, MPTI Kotel-nikov Institute of Radio Engineering, and Electronics Russian Academy of Sciences
V.P. Koshelets - Dr. Sc. (Phys.-Math.), Head of Laboratory, Kotel-nikov Institute of Radio Engineering, and Electronics Russian Academy of Sciences

We investigate a novel superconducting element, High-Harmonic Phase Detector (HPD) based on a superconductor-insulator-superconductor (SIS) junction. We have shown that this element could be implemented for phase-locking of a Flux Flow Oscillator (FFO) in a superconducting integrated receiver (SIR). In this article we propose new method for estimation of a synchronization efficiency based on HPD dc signal monitoring. We have developed experimental setup for measuring of the HPD output signal; it was shown that for the HPD operation the Josephson mixing regime is much more efficient then quasiparticle; the former one results in increase of the output signal on 12 dB at moderate noise level raise on 4 dB.