نتایج جستجو برای: flicker noise
تعداد نتایج: 197323 فیلتر نتایج به سال:
We report flicker noise measurements combined with deep-level transient spectroscopy of the doped and undoped channel GaN/AlGaN heterostructure field-effect transistors. The lowtemperature noise spectra for the doped devices show clear generation-recombination peaks. The value of the activation energy extracted from these noise peaks is consistent with the activation energies measured using dee...
Previous experimental and computational work (for review, see White et al., 2000) has suggested that channel noise, generated by the stochastic flicker of voltage-gated ion channels, can be a major contributor to electrical membrane noise in neurons. In spiny stellate neurons of the entorhinal cortex, we remove the primary source of channel noise by pharmacologically blocking the native persist...
Although there is still controversy about its origin, the designer requires accurate models to estimate 1/f noise of the MOS transistor in terms of its size, bias point and technology. Conventional models present limitations; they usually do not consistently represent the series-parallel association of transistors and they may not provide adequate results for all the operation regions, particul...
We report on two ultrastable lasers each stabilized to independent silicon Fabry-Pérot cavities operated at 124 K. The fractional frequency instability of each laser is completely determined by the fundamental thermal Brownian noise of the mirror coatings with a flicker noise floor of 4×10^{-17} for integration times between 0.8 s and a few tens of seconds. We rigorously treat the notorious div...
In this paper, a 24 GHz direct conversion receiver (DCR) for frequency-modulated continuous-wave (FMCW) ranging radar based on low flicker noise mixer in 90 nm silicon-on-insulator (SOI) CMOS technology is presented. A low-noise and low-power low-noise-amplifier (LNA) adopting simultaneous input matching (SNIM) method designed. Neutralized boost inductor are introduced to improve performance. T...
Digital pulse-position modulation (PPM) is attractive to apply in wireless optical-telemetry systems because of its power efficiency. Usually, the bit-error rate is assumed to depend solely on the noise level. The detrimental influence of optical interference is overlooked. In this paper, interference measurements are reported, models that describe interference are presented, and it is shown th...
The aim of this paper is to investigate the low-frequency noise behavior in p-channel SOI FinFETs processed with different strain techniques. An unusual noise behavior was observed for all devices studied. This unusual noise was investigated for different applied gate voltages and different channel lengths at room temperature. The carrier number fluctuations explain the flicker noise for all de...
A very low voltage 9th order linear phase baseband switched capacitor (SC) filter has been designed to be used as part of a cellular GSM (Global System Mobile) receiver. A Gaussian-to-6dB filter of the order of seven is chosen and a second order function is added to reduce the group delay variations around. The filter uses a fully differential topology to increase the dynamic range and reduce t...
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