Results 41 to 50 of about 5,332,729 (289)
Phase noise and amplitude noise in DDS [PDF]
2012 IEEE International Frequency Control Symposium Proceedings, 2012 Their article reports on the measurement of phase noise and amplitude noise of direct digital synthesizers (DDS), ultimately intended for precision time and frequency applications. The DDS noise S ϕ (f) tends to scale down as 1/ν 0 2, until the noise hits the limit due to the output stage.
Claudio E. Calosso +2 more
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Photonics, 2016 Using coherent optical detection and digital signal processing, laser phase noise and equalization enhanced phase noise can be effectively mitigated using the feed-forward and feed-back carrier phase recovery approaches.
Tianhua Xu +6 more
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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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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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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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Discrete-Time Models and Performance of Phase Noise Channels
IEEE Open Journal of the Communications SocietyThis paper deals with the phase noise affecting communication systems, where local oscillators are employed to obtain reference signals for carrier and timing synchronizations. The most common discrete-time phase noise channel model is analyzed, with the
Amina Piemontese +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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