2016 · 11 citations · 9 references
EngineeringElectrical EngineeringAnalog ElectronicsMicroelectronicsMicrowave EngineeringFrequency ControlFrequency RegulationHigh-frequency Semiconductor DevicesOscillatorsRadio-frequency Integrated CircuitsUltra-wideband CommunicationCmos OscillatorsOscillator CircuitsOscillator TuningPulse Generator CircuitsTuning RangeVoltageVoltage-controlled Oscillator DesignVoltage-controlled Oscillators
This paper presents an on/off switched wideband three-stage voltage controlled ring oscillator for multiband ultra-wideband (UWB) systems. The ring oscillator is a part of UWB pulse generator, thus its oscillating frequency determines the central frequency of the pulse spectrum and has significant effect on spectrum fitting within UWB FCC mask. The oscillator has two control inputs, one for band switching and one for continuous control of the output frequency. The circuit was designed using ST 65nm CMOS process. Simulated data shows a very wide tuning range, approximately from 2.5GHz to 7GHz that the designed oscillator is suitable for ultra-wideband system applications. The phase noises at 1MHz and 10MHz offset are -89.2 dBc/Hz and -113.4 dBc/Hz, respectively.
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UWB wireless sensor networks: UWEN - a practical example
Ian Oppermann, L. Stoica, Alberto Rabbachin et al. · IEEE Communications Magazine · 2004 · 241 citations
Ultra-wide-band transmitter for low-power wireless body area networks: design and evaluation
Julien Ryckaert, Claude Desset, A. Fort et al. · IEEE Transactions on Circuits and Systems I Fundamental Theory and Applications · 2005 · 224 citations
Engineering, Biomedical Engineering, Electrical Engineering +16