Results 31 to 40 of about 3,295,289 (198)
Sinusoidal and Relaxation Wide Range Voltage Controlled Oscillators
Communications, 2015 This paper presents a sinusoidal Wien-bridge and square wave wide range voltage controlled oscillators. The square wave oscillator is based on relaxation (Schmitt trigger) topology.
Milan Stork
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Fractional-N PLL based FMCW sweep generator for an 80 GHz radar system with 24.5 GHz bandwidth [PDF]
Advances in Radio Science, 2012 A phase-locked loop (PLL) based frequency synthesizer capable of generating highly linear broadband frequency sweeps as signal source of a high resolution 80 GHz FMCW radar system is presented. The system achieves a wide output range of 24.5 GHz starting
T. Jaeschke +3 more
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High Dynamic Optimized Carrier Loop Improvement for Tracking Doppler Rates
Journal of Electrical and Computer Engineering, 2015 Mathematical analysis and optimization of a carrier tracking loop are presented. Due to fast changing of the carrier frequency in some satellite systems, such as Low Earth Orbit (LEO) or Global Positioning System (GPS), or some planes like Unmanned ...
Amirhossein Fereidountabar +2 more
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IEEE Access, 2023 The study of stability criterion and interaction analysis for grid-connected inverter under weak grid is of great value. The previous stability criterion combined current loop, phase-locked loop and other loops together, and used the same external ...
Fang Liu +4 more
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Linearized discrete-time model of higher order charge-pump PLLs [PDF]
, 2011 European Conference on Circuit Theory and Design (ECCTD), Linkoping, Sweden, 29-31 August, 2011In this paper, we derive linearized discrete-time models of higher order Charge-Pump Phase-Locked Loops (CPPLLs).
Paul F. Curran +5 more
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Robust optical injection locking to a 250 MHz frequency comb without narrow-band optical pre-filtering [PDF]
, 2011 A semiconductor laser was injection locked to a single optical frequency comb mode with a dither-free phase locked loop.
Wu, D.S. +3 more
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LADRC-Based Magnetic Field Measurement Method for a Nuclear Magnetic Resonance Rotation Sensor
Applied Sciences, 2021 Magnetic field measurement is fundamental to nuclear magnetic resonance rotation sensors (NMRRS). A phase-locked loop (PLL)-based measurement with two nuclear isotopes is commonly applied to observe the magnetic field.
Xinghua Zhao +4 more
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Reinvestigation of Single-Phase FLLs
IEEE Access, 2019 Besides well-known phase-locked loops, frequency-locked loops (FLLs) are applicable to grid synchronization for grid-tied power converters. The models, principles, and algorithm structures of existing notch filter-based single-phase FLLs are often ...
Xiuqiang He, Hua Geng, Geng Yang
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Interface electronics for a CMOS electrothermal frequency-locked-loop
ESSCIRC 2007 - 33rd European Solid-State Circuits Conference, 2007 This paper describes a new implementation of a CMOS electrothermal frequency-locked-loop (FLL), whose output frequency is determined by the temperature-dependent phase shift of an electrothermal filter (ETF). The FLL maintains a constant phase shift in the ETF, and as a result drives it with a signal whose frequency is a well-defined function of ...
Zhang, C. (author) +1 more
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An effective method for the determination of the locking range of an injection-locked frequency divider [PDF]
, 2008 The paper proposes a methodology for the determination of the locking range of an Injection-Locked Frequency Divider. The technique involves the use of the Warped Multi-time scale model and is applicable to oscillators in general.
Xu, Tao, Condon, Marissa
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