Results 261 to 270 of about 7,095 (298)
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Broadbanding of a Submillimetre-Wave Backward-Wave Oscillator
7th European Microwave Conference, 1977, 1977As a consequence of the interest shown by astronomers for observation on board a space platform in the submillimetre-wave range, the European Space Agency has initiated a research and development programme on components required for advanced submillimetre-wave heterodyne detection and particularly on the local oscillator. In order to cover the spectral
R. Bonnefoy, G. Kantorowicz, P. Palluel
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High-Speed Spiking and Bursting Oscillations in a Long-Delayed Broadband Optoelectronic Oscillator
Journal of Lightwave Technology, 2015We investigate the generation of high-speed spiking and bursting signals in a long time-delayed broadband optoelectronic oscillator (OEO). The OEO is configured in a delayed feedback loop employing a long optical fiber delay line and other elements including a tunable laser, a phase modulator (PM) and a linearly chirped fiber Bragg grating (LCFBG), a ...
Bruno Romeira +4 more
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Local oscillator synthesiser module for broadband applications
IET Seminar on Wideband Receivers & Components, 2008The design and measurement of a Local Oscillator Synthesiser Module for Broadband Applications is described in this paper. Broadband receivers require local oscillators whenever heterodyning is utilised in receiver architectures to convert frequency signal to an intermediate-frequency (IF) spectrum for ease of signal processing.
A. Virdee, T. Richards
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A broadband CMOS LC voltage-controlled oscillator for FMCW synthesizer
2014 International Symposium on Integrated Circuits (ISIC), 2014A broadband CMOS LC voltage controlled oscillator (VCO) for an FMCW synthesizer application was developed, which achieves wide tuning range and low phase noise. The VCO employs a topology of NMOS cross-coupled pair and NMOS tail current source. In order to lower phase noise while fulfill continuous tuning range of 2GHz, P-type AMOS varactors are used ...
Liheng Lou +5 more
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Experimental Duffing oscillator for broadband piezoelectric energy harvesting
Smart Materials and Structures, 2011This paper presents an experimental piezoelectric energy harvester exhibiting strong mechanical nonlinear behavior. Vibration energy harvesters are usually resonant mechanical systems working at resonance. The resulting mechanical amplification gives an output power multiplied by the mechanical quality factor Q when compared to non-resonant systems ...
Gael Sebald +3 more
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Simulation of a Duffing oscillator for broadband piezoelectric energy harvesting
Smart Materials and Structures, 2011Vibration energy harvesters are usually resonant mechanical systems working at resonance. The subsequent mechanical amplification results in output powers multiplied by the mechanical quality factor when compared to non-resonant systems. The main drawback is the difficulty of matching a given vibration frequency range to the energy harvester's ...
Gael Sebald +3 more
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Two‐beam multiplexed CARS based on a broadband oscillator
Journal of Raman Spectroscopy, 2010AbstractA two‐beam multiplexed coherent anti‐Stokes Raman scattering (CARS) microscopy setup is demonstrated by using a broadband (BB) Ti:sapphire oscillator without using any specialty fibres. A well‐defined spectral structure of the source leads to a delay‐sensitive CARS measurement in two‐colour CARS and also provides an efficient means of obtaining
Kentaro Furusawa +2 more
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Entropy evolution of a harmonic oscillator driven by broadband noise
Journal of Statistical Mechanics: Theory and Experiment, 2008We discuss the time evolution of the entropy (S) of a harmonic oscillator driven by colored noise. Our analysis is based on the Fokker–Planck description of the stochastic process. For all noise colors, the rate dS/dt, and its upper bound UB, monotonically decay to zero with time. The decay is determined by the rate of phase space contraction, which in
Pradip Majee +2 more
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A Broadband Voltage Controlled Oscillator with Multi-Band Output
2023 IEEE 15th International Conference on ASIC (ASICON), 2023Boming Su +6 more
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Broadband Tuning in an Infrared Parametric Oscillator
Physica Status Solidi (a), 1988G. C. Bhar, N. P. Ghosh
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