Results 31 to 40 of about 216,951 (300)
High Efficiency Power Amplifier Based on Envelope Elimination and Restoration Technique [PDF]
, 2010 Due to complex envelope and phase modulation employed in modern transmitters it is necessary to use power amplifiers that have high linearity. Linear power amplifiers (classes A, B and AB) are commonly used, but they suffer from low efficiency especially
Alou Cervera, Pedro +9 more
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A bulk-driven, buffer-biased, gain-boosted amplifier for biomedical signal enhancement
Cogent Engineering, 2019 The growing consciousness in health, biomedical research area is becoming most sought-after to develop or design medical devices by bringing biomedical researchers and clinicians to solve many health issues.
Sarin Vijay Mythry, D. Jackuline Moni
doaj +1 more source
Transpermeance Amplifier Applied to Magnetic Bearings
Actuators, 2017 The most conventional approach of controlling magnetic forces in active magnetic bearings (AMBs) is through current feedback amplifiers: transconductance.
Jossana Ferreira +2 more
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Triple buck converter – an efficient low-distortion switch-mode power amplifier topology
The Journal of Engineering, 2019 A switch-mode power amplifier topology that can achieve both a high conversion efficiency and low-output signal distortion is introduced. Such systems are desirable for ultra-high precision amplifiers that, for example, drive actuators in nanometre ...
Mario Mauerer +2 more
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Lifetime quenching in Yb doped fibres
, 1997 We have discovered that in ytterbium-doped silica fibres the excited state lifetime of a fraction of the Yb ions can be quenched to a very small value, leading to a strong unbleachable loss.
Barber, P.R. +5 more
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Mask Programmable CMOS Transistor Arrays for Wideband RF Integrated Circuits [PDF]
, 2009 A mask programmable technology to implement RF and microwave integrated circuits using an array of standard 90-nm CMOS transistors is presented. Using this technology, three wideband amplifiers with more than 15-dB forward transmission gain operating in ...
Martinez, Edgar J. +2 more
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Variation in the Amplifier System Among Chinese L2 English Speakers in Australia
LanguagesThis study investigates the English adjective amplifier system of eleven Mandarin Chinese L2 speakers of English residing in Australia compared to a sample of ten native Australian English (AusE) speakers from the AusTalk corpus. Employing a variationist
Minghao Miao, Chloé Diskin-Holdaway
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Bell tests for continuous variable systems using hybrid measurements and heralded amplifiers
, 2012 We present Bell tests for optical continuous variable systems, combining both hybrid measurements (i.e. measuring both particle and wave aspects of light) and heralded amplifiers.
Brask, Jonatan Bohr +3 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Neuroblastoma is the most common extracranial solid tumor in early childhood. Its clinical behavior is highly variable, ranging from spontaneous regression to fatal outcome despite intensive treatment. The International Society of Pediatric Oncology Europe Neuroblastoma Group (SIOPEN) Radiology and Nuclear Medicine Specialty Committees ...
Annemieke Littooij +11 more
wiley +1 more source
Constant-amplitude, frequency- independent phase shifter [PDF]
, 1971 Electronic circuit using operational amplifiers provides output with constant phase shift amplitude, with respect to sinusoidal input, over wide range of frequencies. New circuit includes field effect transistor, Q, operational amplifiers, A1 and A2, and
Deboo, G. J.
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