Results 21 to 30 of about 378,338 (267)
Design of a Miniaturized Low Noise 10 MHz Crystal Oscillator for Rubidium Atomic Frequency Standard
Chinese Journal of Magnetic Resonance, 2022 A miniaturized low noise quartz crystal oscillator for rubidium atomic frequency standard (RAFS) was designed in this paper, with the oscillation circuit applying Colpitts parallel configuration and SC-cut crystal resonator.
WAN Wen-jie +4 more
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Journal of Low Power Electronics and Applications, 2023 This article presents the design and optimization of a tunable quadrature differential LC CMOS voltage-controlled oscillator (VCO) with a D flip-flop (DFF) frequency divider.
Muhammad Faisal Siddiqui +3 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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Noise in phase shifting interferometry [PDF]
Optics Express, 2009 We present a theoretical analysis to estimate the amount of phase noise due to noisy interferograms in Phase Shifting Interferometry (PSI). We also analyze the fact that linear filtering transforms corrupting multiplicative noise in Electronic Speckle Pattern Interferometry (ESPI) into fringes corrupted by additive gaussian noise. This fact allow us to
Quiroga Mellado, Juan Antonio +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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Passive Phase Noise Cancellation Scheme [PDF]
Physical Review Letters, 2012 We introduce a new method for reducing phase noise in oscillators, thereby improving their frequency precision. The noise reduction is realized by a passive device consisting of a pair of coupled nonlinear resonating elements that are driven parametrically by the output of a conventional oscillator at a frequency close to the sum of the linear mode ...
Kenig, Eyal +6 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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PHASE AND FREQUENCY NOISE METROLOGY [PDF]
Frequency Standards and Metrology, 2009 As a consequence of a general trend in the physics of oscillators and clocks towards optics, phase and frequency metrology is rapidly moving to optics too. Yet, optics is not replacing the traditional radio-frequency (RF) and microwave domains. Instead, it adds tough challenges.
Rubiola, Enrico +3 more
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Whole system radar modelling: Simulation and validation
IET Radar, Sonar & Navigation, 2023 The ever‐expanding horizon of radar applications demands solutions with high‐end radar functionalities and technologies and is often limited by the available radar equipment, cost and time.
Jithin Kannanthara +9 more
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