Results 41 to 50 of about 459,320 (213)
Reducing Phase Noise in Multi-Phase Oscillators [PDF]
IEEE Transactions on Circuits and Systems I: Regular Papers, 2016 This paper investigates phase noise mechanism in arrays of resonant LC oscillators. Such arrays represent today a promising solution for the generation of multi-phase signals needed in several advanced applications. The analysis presented in this paper relies on consolidated phase-domain macromodels as well as on the original concept of noise transfer ...
Paolo Maffezzoni +3 more
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Passive optical phase noise cancellation [PDF]
Optics Letters, 2020 We report on the realization of an optical phase noise cancellation technique by passively embedding the optical phase noise information into a radio frequency signal and creating a copy of the optical frequency signal, which is pre-corrected by the amount of phase noise introduced by optical phase perturbations.
Liang Hu +3 more
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Cosmic radio noise absorption events associated with equatorward drifting arcs during a substorm growth phase [PDF]
, 2004 International audienceCosmic radio noise absorption (CNA) events associated with equatorward drifting arcs during a substorm growth phase are studied by using simultaneous optical auroral, IRIS imaging riometer and EISCAT incoherent scatter radar ...
S. R. Marple +7 more
core +1 more source
Relation Between Delay Line Phase Noise and Ring Oscillator Phase Noise [PDF]
IEEE Journal of Solid-State Circuits, 2014 The phase noise of a ring oscillator can be obtained by multiplying its open-loop phase noise by a simple shaping function. The shaping function is computed using first principles and is applicable to both flicker-noise-induced and white-noise-induced phase noise, leading to compact equations for ring oscillators.
Aliakbar Homayoun, Behzad Razavi
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Digital Tri-Axis Accelerometer with X/Y-Axial Resonators and Z-Axial Capacitive Seesaw
Micromachines, 2022 A tri-axis accelerometer with a digital readout circuit and communication system is introduced. It is composed of two resonant accelerometers in the x and y-axis, and a seesaw capacitive one in the z-axis. The device is encapsulated in air to ensure that
Dunzhu Xia, Mohan Yao, Jinhui Li
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Phase Noise Influence in a Dual-Frequency Laser Phase-Shift Range Finder
IEEE Photonics Journal, 2018 The influence of phase noise in a dual-frequency laser phase-shift range finder is theoretically and experimentally investigated. The proposed range finder is based on the use of a coherent dual-frequency laser and direct detection of the backscattered ...
Hongzhi Yang +4 more
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Applied Sciences, 2018 Digital holography is a well-established technology for optical quality control in industrial applications. Two common challenges in digital holographic measurement tasks are the ambiguity at phase steps and the limited depth of focus.
Tobias Seyler +5 more
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A Comprehensive Experimental Emulation for OTFS Waveform RF-Impairments
Sensors, 2022 The orthogonal time-frequency space (OTFS) waveform exceeds the challenges that face orthogonal frequency division multiplexing (OFDM) in a high-mobility environment with high time-frequency dispersive channels.
Abdelrahman Abushattal +3 more
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Phase-Noise and Amplitude-Noise Measurement of DACs and DDSs [PDF]
2019 Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum (EFTF/IFC), 2019 This article proposes a method for the measurement of Phase Noise (PN, or PM noise) and Amplitude Noise (AN, or AM noise) of Digital-to-Analog Converters (DAC) and Direct Digital Synthesizers (DDS) based on modulation-index amplification. The carrier is first reduced by a controlled amount (30-40 dB) by adding a reference signal of nearly equal ...
Calosso, Claudio E +2 more
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Influence of phase noise and interchannel interference on the performance of optical heterodyne FSK receiver [PDF]
Serbian Journal of Electrical Engineering, 2003 The moments approach is generally considered a systematic way to perform the analysis of coherent optical systems. Exact moments of the filtered signal corrupted by phase noise enable the construction of the Gaussian quadrature rule, which may be used to
Stefanović Mihajlo, Milić D.
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