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ultra-low frequency noise

Ultra low noise frequency synthesis, comparison and dissemination using femtosecond optical frequency combs

Ultra low noise frequency synthesis, comparison and dissemination using femtosecond optical frequency combs

... fractional frequency uncertainties of few parts in 10 18 do not currently ...and frequency transfer technique (TWSTFT) ...fractional frequency in- stability of such methods is typically limited to ...

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Noise Analysis of Ultra High Speed SiGe BiCMOS Track and Hold Amplifier for Fiber Optic Equalizer

Noise Analysis of Ultra High Speed SiGe BiCMOS Track and Hold Amplifier for Fiber Optic Equalizer

... for ultra high speed application, it has a good iso- lation between the input and output signal in hold ...is low, for instance, the maximum SFDR value shown in [1] is less than 39 dB with the input ...

6

Novel Fgmos Based Ultra Low Power, High Frequency Half Wave Rectifier

Novel Fgmos Based Ultra Low Power, High Frequency Half Wave Rectifier

... high frequency FGMOS based half wave and full-wave rectifiers were obtained in terms of lower supply voltages and reduced power ...high frequency operation at a supply voltage of ...operation ...

10

A CMOS 3 1   10 6 GHz UWB LNA Employing Modified Derivative Superposition Method

A CMOS 3 1 10 6 GHz UWB LNA Employing Modified Derivative Superposition Method

... Low noise amplifier (LNA) performs as the initial amplification block in the receive path in a radio frequency (RF) re- ...an ultra-wideband ...the noise from the device is decreased ...

5

Proposed criteria for the assessment of low frequency noise disturbance

Proposed criteria for the assessment of low frequency noise disturbance

... various low frequency sounds to a just-acceptable level for imagined day and night ...the low frequency range, „real‟ LFN extracted from field test recordings, and synthesised beating tones ...

115

A LOW POWER, HIGH GAIN, LOW NOISE AMPLIFIER WITH IMPROVED
NOISE FIGURE AND INPUT MATCHING FOR ULTRA
WIDE BAND APPLICATIONS

A LOW POWER, HIGH GAIN, LOW NOISE AMPLIFIER WITH IMPROVED NOISE FIGURE AND INPUT MATCHING FOR ULTRA WIDE BAND APPLICATIONS

... There are two types of UWB communication systems based on (i) direct sequence code division multiple access (DS-CDMA) approach and (ii) multi-band orthogonal frequency division multiplexing (MB-OFDM) approach [2]. ...

12

Design Low Noise Amplifier With Ultrawideband Frequency

Design Low Noise Amplifier With Ultrawideband Frequency

... Ultra-wideband (UWB) technology offers a solution for the bandwidth, cost, power consumption, and physical size requirements of next-generation consumer electronic ...

24

Ultra Low Power, Low Phase Noise 10 GHz LC VCO in the Subthreshold Regime

Ultra Low Power, Low Phase Noise 10 GHz LC VCO in the Subthreshold Regime

... an ultra-low power, low phase noise differential 10 GHz LC voltage-controlled oscillator (VCO) which is biased in the subthreshold regime, is presented in the ...phase noise of VCO ...

6

Low Noise Amplification, Detection and Spectroscopy of Ultra Cold Systems  in RF Cavities

Low Noise Amplification, Detection and Spectroscopy of Ultra Cold Systems in RF Cavities

... Radio Frequency (RF) measurements need to be performed on various physical systems, especially under stringent conditions of extreme ...involve ultra-cold systems, such as atoms, molecules or Bose-Einstein ...

12

Ultra High Frequency Nanoelectromechanical Systems with Low Noise Technologies for Single Molecule Mass Sensing

Ultra High Frequency Nanoelectromechanical Systems with Low Noise Technologies for Single Molecule Mass Sensing

... of frequency stability and phase noise for all these Si NW resonators ...good frequency stability that translates into very impressive zeptogram-scale mass ...

250

Recreational vessels without Automatic Identification System (AIS) dominate anthropogenic noise contributions to a shallow water soundscape

Recreational vessels without Automatic Identification System (AIS) dominate anthropogenic noise contributions to a shallow water soundscape

... Vessel presence. A total of 198 vessels passed within 2 km of the sound recorder during the observation intervals (Supplementary Table S1), that summed up to a total observation time of 45.6 hours (Supplementary Table  ...

10

Low frequency noise characterization of strained germanium pMOSFETs

Low frequency noise characterization of strained germanium pMOSFETs

... example [22]. It indicates that the traps responsible for carrier scattering are also the cause of the higher 1/f-like noise. The strongest impact is found for the junction anneal: omission of the anneal ...

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Strategies for the analysis and design of a low noise, frequency agile synthesiser

Strategies for the analysis and design of a low noise, frequency agile synthesiser

... fractional-n frequency synthesisers were dismissed because of their disappointing ...alias noise into the PLL pass ...phase noise plateau. Further, because any phase noise measurement system ...

208

An experimental investigation of very low frequency semiconductor noise

An experimental investigation of very low frequency semiconductor noise

... source vol tage supply regul ators insi de the temperature control led oven, recording of the supply voltages and noise source temperaturps during the enti re experiment so that the cont[r] ...

309

Investigation of frequency noise and spectrum linewidth in semiconductor optical amplifier

Investigation of frequency noise and spectrum linewidth in semiconductor optical amplifier

... The semiconductor optical amplifier (SOA) is a useful optical device achieving high gain and be able to integrate with a semiconductor laser and a photodetector. The more wide spread applications of SOAs in optical ...

11

Numerical modelling of ultra low frequency waves in Earth's magnetosphere

Numerical modelling of ultra low frequency waves in Earth's magnetosphere

... Ultra Low Frequency (ULF) waves are a ubiquitous feature of Earth’s outer atmosphere, known as the magnetosphere, having been observed on the ground for almost two cen- turies, and in space over the ...

169

A Hybrid Storage System For Power Management Of Virtual Synchronous Generators

A Hybrid Storage System For Power Management Of Virtual Synchronous Generators

... This works because the rotating masses of all synchronous generators are coupled electromechanically through their grid connections and as a consequence run at exactly the same electrical frequency. When in future ...

7

Removing noise from electroencephalogram signals for
BIS based depth of anaesthesia monitors

Removing noise from electroencephalogram signals for BIS based depth of anaesthesia monitors

... The second method is Wavelet transform. In this technique, EEG signal is decomposed into five levels using the Stationary Wavelet Transform (SWT). The first step of this filtering is to eliminate high frequency ...

12

Characterization and Impact of Low Frequency Wind Turbine Noise Emissions

Characterization and Impact of Low Frequency Wind Turbine Noise Emissions

... background noise levels associated with high wind ...sufficiently low for the sound to be perceived at long ...the low background noise levels of rural ...turbine noise appear more like ...

159

Low Frequency Noise Modeling in Single- and Double-Gate MOSFETs

Low Frequency Noise Modeling in Single- and Double-Gate MOSFETs

... TABLE OF CONTENTS Acknowledgements ii Abstract IV Table of Contents vi List of List of Tables x List of Publications xi Figures Chapter 1 - vii Introduction 1 1.1 Introduction 1 1 3 1 1 [r] ...

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