نتایج جستجو برای: high frequency noise
تعداد نتایج: 2520513 فیلتر نتایج به سال:
Ultra-low frequency noise lasers have been widely used in laser-based experiments. Most narrow-linewidth are implemented by actively suppressing their through a servo loop (FNSL). The bandwidths (LBW) of FNSLs currently below megahertz, which is gradually tricky to meet application requirements, especially for wideband quantum sensing This article has experimentally an FNSL with loop-delay-limi...
| In this tutorial paper, we review fundamentals of oscillator phase noise emphasizing its physical picture based on the concept of phase di®usion. This review is intended to provide an essential understanding of phase noise rather than a comprehensive phase noise modeling. We then summarize several phase noise reduction techniques for various types of oscillators. Index Terms|oscillators, phas...
Background and purpose: Stimulus–evoked otoacoustic emission (OAE) is generated by the outer hair cells (OHCs) and high levels of noise will highly damage these cells. Therefore, even a mild loss in OHCs could alter the generation of OAE. The aim of this study was to assess and compare the pure tone threshold, Distortion Product Otoacoustic Emission (DPOAE) amplitude in industrial workers exper...
This paper presents a two-stage low-noise ultra-wideband amplifier to obtain high and smooth gain in 180nm CMOS Technology. The proposed structure has two common source stages with inductive feedback. First stage is designed about 3GHz frequency and second stage is designed about 8GHz. In simulation, symmetric inductors of TSMC 0.18um CMOS technology in ADS software is used.Simulations results ...
Background and aims Overexposure to industrial noise pollution induce hearing loss workers. Occupational hearing loss may cause interference whit oral communication, so it may increase the risk of occupational accidents in workplace as well as affects whit social activities. This study was conducted on Lavan Island, are of oil extracting regions in the south of Iran. The object of this s...
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