Towards Practical Applications of THz Josephson Oscillators with Sub-mW Power and 500 GHz Frequency Tunability H. B. Wang1, 2, *, J. Yuan2, D. Y. An1, 2, N. Kinev3, M.Y. Li1, 2, X. J. Zhou1, M. Ji1, 2, Y. Huang1 ... Collective Quantum Phenomena in LISA+, Universitaet Tuebingen, D-72076 Tuebingen, Germany *Email: hbwang1000@gmail.com maximum detected power of 25 W, the frequency can be tuned by either bias ... Emission of coherent THz radiation from superconductors", Science 318, 1291, 2007. ...
... Microstructure RAS; Nizhny Novgorod; Russia 4 National Institute for Materials Science, Tsukuba 3050047, Japan A Superconducting Integrated Receiver ( SIR ) [1] comprises on one chip a low-noise SIS mixer with quasioptical antenna, an Flux-Flow Oscillator ( FFO ) acting as a Local Oscillator (LO) and a second SIS harmonic mixer (HM) for the FFO phase locking ... Continuous tuning of the phaselocked local oscillator has been realized at any frequency in the range 300-750 GHz. ...
... 4 A I. I NTRODUCTION AND BACKG ROUND A Superconducting Integrated Receiver (SIR) [1] comprises on one chip a low-noise SIS mixer with quasioptical antenna, an Flux-Flow Oscillator (FFO) acting as a Local Oscillator (LO) and a second SIS harmonic mixer (HM) for the FFO phase locking (see Fig. ... In the SIR the bandwidth is determined by the SIS mixer tuning structure and the matching circuitry between the SIS and the FFO. ...
Home Search Collections Journals About Contact us My IOPscience Design and experimental study of superconducting left-handed transmission lines with tunable dispersion This content has been downloaded from IOPscience. ... At zero magnetic field, we observed no rejection band in the frequency range of 811 GHz. ... Measured transmission through 20-cell line for various magnetic fields: (a) 0 mT, (b) 0.15 mT, (c) 0.25 mT, and (d) 0.3 mT. left-handed behavior within the lower frequency transmission band. ...
... The measured voltage response value for the detector integrated in a double-dipole antenna was Vout = 120 µV. This corresponds to a noise equivalent power of NEP = Vn /(dV /dP) = 3.5 в 10-17 W Hz-1/2 , where dV /dP is the voltage to power response obtained from the incoming power estimation based on the Planck formula. ... Optical response of a CEB versus bias current at different RF source temperatures; measured with a 300 GHz bandpass filter. ...
... A fraction of SRR is replaced by Nb-AlOx-Nb Josephson tunnel junctions connected in parallel and forming a superconducting quantum interference device, whose inductance is sensitive to the external dc magnetic field. ... The inductance of the Josephson SRR (JSRR) is a periodic function of the magnetic flux threading the SQUID; the period is equal to magnetic flux quantum U0 ? ... Consequently, the Josephson inductance of the SQUIDs does not change equally in the common magnetic field. ...
Home Search Collections Journals About Contact us My IOPscience Protecting SQUID metamaterials against stray magnetic fields This content has been downloaded from IOPscience. ... 2013 Supercond. ... This means that each SQUID is biased with a different magnetic field. ... Figure 2. ... Every line corresponds to the magnetic field dependent resonance curve of one or a small number of rf-SQUIDs and each of these individual or small groups of SQUIDs is thus biased with different magnetic field. ...
... 2013 J. Phys.: Condens. ... If they remain so close to the unstable `vacuum' that the nonlinearities of the backreaction can be approximately ignored, the effectively linearized field equations give rise to Gaussian field correlation functions. ... J. Phys.: Condens. ... However, we know that the basic scaling result, equation (5), also provides a good test of the Gaussian behaviour of the order parameter field at the time of fluxoid production, in a way that correctly encodes the KZ scales. ...
Harmonic phase detector for phase locking of cryogenic terahertz oscillators Konstantin V. Kalashnikov, Andrey V. Khudchenko, and Valery P. Koshelets Citation: Appl. ... The amplified intermediate frequency (IF) signal is compared with a microwave reference signal by a conventional room-temperature phase-locking loop (RT PLL) system; a phase error signal is returned to control the FFO inside the cryostat. ... The spectrum of the FFO phase-locked by the HPD is depicted in Fig. 2 by a solid line. ...
NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2013, 4 (4), P. 507511 EXPERIMENTAL AND THEORETICAL CHARACTERISATION OF JOSEPHSON SELF-COUPLING IN SUB-TERAHERTZ FLUX-FLOW OSCILLATOR D. R. Gulevich1 , P. N. Dmitriev2 , V. P. Koshelets2 , F. V. Kusmartsev1 1 Department ... 'nikov Institute of Radio Engineering and Electronics, RAS, Moscow, 125009, Russia PACS 85.25.Cp, 74.50.+r, 07.57.Hm We present experimental and ... J. Appl. ... Phys. Rev. B, 86, 054501 (2012); E. A. Matrozova et al. ...
... The generally adopted analysis of Owen and Scalapino (1967 Phys. Rev. 164, 538) for the critical current, Ic , of an in-line Josephson tunnel junction in the presence of an in-plane external magnetic field, He , is revisited and extended to junctions whose electrodes can be thin and of different materials, i.e., of arbitrary penetration depth. ... The junction top electrode is in gray, while the base electrode is in black; the tunneling insulating layer in between is hatched. ... Phys. Lett. ...
... Phys. Lett. 102, 092601 (2013); doi: 10.1063/1.4794072 View online: http://dx.doi.org/10.1063/1.4794072 View Table of Contents: http://apl.aip.org/resource/1/APPLAB/v102/i9 Published by the American Institute of Physics. ... With the emitter radiating at 0.5 THz, we observed up to 7 Shapiro steps on the current-voltage characteristic of the detector. The ac current induced in this junction was 0.9 mA, and the dissipated power was 1.8 lW. ... 102, 092601 (2013) S. Lin and X. Hu, Phys. Rev. Lett. ...
IEEE TR ANSAC TIONS ON APPLIED SUPERCONDUCTIVITY, VOL. ... 3, JUNE 2013 1600705 High-Tc DC SQUIDs for Magnetoencephalography M. I. Faley, U. Poppe, R. E. Dunin-Borkowski, M. Schiek, F. Boers, H. Chocholacs, J. Dammers ... V. Maslennikov, and V. P. Koshelets Abstract--We have investigated the microstructural and electron transport properties of 45 step -edge Josephson junctions grown on MgO substrates and used them for the preparation of superconducting quantum interference device ( ... Fig. ...
... My English page . ... Дмитриев А.С., Сидоренко А.В., Андреев Ю.В. "Сверхширокополосные беспроводные прямохаотические сети передачи информации", Труды Межд. конгресса 'Информационные системы и технологии' CSIST-2013 , 4-7 ноября 2013 г., Минск, Беларусь. ... Dmitriev A.S., Laktiushkin A.M., Andreyev Yu.V. UWB wireless personal area networks based on chaotic signals, Proc. 12th Mediterranean microwave symposium MICROCOLL-2007 , 14-16 May 2007, Budapest, Hungary, pp. ... My English Home Page | ...
... Дмитриев А.С., Ефремова Е.В., Румянцев Н.В. 'Генератор микроволнового хаоса с плоской огибающей спектра мощности в диапазоне 3-8 GHz'. ... Dmitriev A., Efremova E., Lazarev V. 'Ultra Wideband Transceivers Based on Chaotic Pulses and Their Application to Wireless Body Area Networks'. ... Дмитриев А.С., Ефремова Е.В., Панас А.И., Максимов Н.А. Генерация хаоса - М.: Техносфера, 2012, 424 с. Дмитриев А.С., Ефремова Е.В., Панас А.И. 'Генераторы хаоса СВЧ-диапазона': в сб. ... InformChaos Lab Home Page . ...
... Kuzmin L.V. “Reception of UWB chaotic radio pulses in multipath channel using a system of orthogonal signals.” ... Dmitriev Yu.A., Kuzmin L.V. “Demodulation of chaotic signals using reference chaotic oscillator,” Radiotekhnika I elektronika , vol. 58, no. 12, 2013, pp. 1171-1178 (in Russian). Dmitriev A.S., Ryzhov A.I., Kuzmin L.V., Rumyantsev N.V., Evseev O.V., Mansurov G.K. Acoustic sensor for wireless sensor networks based on ultrawideband chaotic radio pulses . ... InformChaos Lab Home Page . ...
... Maksimov N.A., Panas A.I. “Energy-efficient generator of microwave chaos,” Uspekhi sovremennoi radioelektroniki , 2013, no. 3, pp. 79-83 (in Russian). Dmitriev A.S., Efremova E.V., Panas A.I., Maksimov N.A. Generation of chaos. ... Dmitriev A.S., Panas A.I., Starkov S.O., and Kyarginsky B.E., "Direct chaotic circuits for communications in microwave band", Radiotekhnika i elektronika , 2001, vol. 46, no. 2, pp. 224-233 (in Russian). ... Dmitriev A.S., Panas A.I., Starkov S.O., et al. ...