Results 281 to 290 of about 941,423 (318)
Some of the next articles are maybe not open access.
A Tunable Transmission Line With Controllable Phase Shifting and Characteristic Impedance
IEEE Transactions on Circuits and Systems II: Express Briefs, 2020Tunable transmission lines have a high demand in the 5G wireless communication applications. In this brief, a novel transmission line is presented to control both electrical length and characteristic impedance individually, creating flexible functions. For the first function, the proposed transmission line can perform as a tunable phase shifter with 90°
Han Ren +3 more
openaire +1 more source
Controlling Power Flow with Phase Shifting Equipment
Transactions of the American Institute of Electrical Engineers, 1930In the operation of an electric power distributing system involving various kinds of networks, a fundamental necessity is that each transforming and transmitting unit carry a reasonable share of the total load. In the case of a single system that has been developed in a coordinated manner the problem of load division has not in general been troublesome
openaire +1 more source
Phase-shift control of the exchange coupling between magnetic impurities
Nanotechnology, 2020Abstract The control of magnetic interactions is one of the most relevant topics in spintronics. In this work, we propose to use electric potential barriers for tuning or even suppressing the RKKY exchange coupling between magnetic impurities in a two-dimensional electron gas.
Jose d’Albuquerque e Castro +3 more
openaire +2 more sources
Stable adaptive controller design for uncertain phase shift
IFAC Proceedings Volumes, 2004Abstract In order to construct stable adaptive control systems, several assumptions are needed, and those require some prior information of unknown plants, such as degrees and relative degrees. However, those assumptions sometimes become too restrictive, since it is difficult to obtain reasonable estimations of those indices a priori for unknown ...
openaire +1 more source
Phase-shift control in electro-optical analyzers
SPIE Proceedings, 1994Adjustment and stabilization of an optimal value of control voltage is a common problem in spectrum polarimetry when using electrooptical polarization analyzers. In this paper we give a description of a method to determine the quarter-wave phase shift when handling control signals of square form (of the type of a `meander').
Victor M. Grigoryev, Nikolai I. Kobanov
openaire +1 more source
A System of Two Coupled Oscillators With a Continuously Controllable Phase Shift
IEEE Transactions on Circuits and Systems I: Regular Papers, 2019We present a novel generalization of quadrature oscillators (QVCO) which we call “arbitrary phase oscillator” or APO for short. In contrast to a QVCO which generates only quadrature phases, the APO is capable of continuously generating any desired phase at its output. The proposed structure employs a novel coupling mechanism to generate arbitrary phase
Vahnood Pourahmad +2 more
openaire +1 more source
Control-Oriented Modeling of Wireless Power Transfer Systems With Phase-Shift Control
IEEE Transactions on Power Electronics, 2020This paper investigates control-oriented modeling of a class of wireless power transfer systems with a phase-shift controlled inverter. Two methods are studied: the conventional analytical modeling method which is based on physical laws, and the refined instrumental variable method which is based on sampled data.
Fengwei Chen +4 more
openaire +1 more source
Coarse-grained controllability of wavepackets by free evolution and phase shifts
The Journal of Chemical Physics, 2004We describe an approach to controlling wavepacket dynamics and a criterion of wavepacket controllability based on discretized properties of the wavepacket’s localization on the orbit. The notion of “coarse-grained control” and the coarse-grained description of the controllability in infinite-dimensional Hilbert spaces are introduced and studied using ...
Shapiro, E. A. +2 more
openaire +2 more sources
Analysis of Phase-Shift Controlled Thermoregulator Circuits
Review of Scientific Instruments, 1956The power sensitivity and the line voltage variation effects of a phase-shifting thermoregulator making use of a thermal element in a Wheatstone bridge and a grid-controlled thyratron are expressed in terms of the circuit parameters. The conditions for line voltage variation compensation are derived and the calculated results are found to be in good ...
openaire +1 more source
Phase shifting control for IQ separation in qubit state tomography
Quantum Information ProcessingzbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ziyang You +4 more
openaire +1 more source