Results 251 to 260 of about 395,266 (293)

Mitigation of scintillation noise by common mode rejection

SPIE Proceedings, 2005
There is increasing interest in free space optical communications as an alternative to fibre optics and radio frequency communications, particularly in 'last mile' applications and applications with weight and power restrictions e.g. communications with unmanned aerial vehicles.
Kenneth J. Grant, Kerry A. Corbett, Bradley A. Clare, James E. Davies, Brett D. Nener   +4 more
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Differential image sensor with high common mode rejection

Proceedings of the 31st European Solid-State Circuits Conference, 2005. ESSCIRC 2005., 2005
Image processing applications like tracking of moving objects typically involve the subtraction of two successive images. Doing this without the need for a large digital memory requires a sensor chip that does the subtraction in the analog domain. This paper provides insight in the critical issues of the design of such a differential image sensor.
M. Innocent, G. Meynants
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Common-mode rejection of monolithic operational amplifiers

IEEE Journal of Solid-State Circuits, 1970
A simple expression is derived for the common-mode rejection ratio (CMRR) of monolithic operational amplifiers in terms of transistor processing parameters. The tradeoffs between transistor current gain and CMRR are investigated. The feasibility of 120-dB CMRR is demonstrated with a common-emitter differential pair. The addition of eight active devices
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Research on Common-Mode Rejection Quartz Crystal Resonators

2007 International Conference on Information Acquisition, 2007
The force sensitive characteristic of multi-resonator assembled on one crystal are studied based on analyze of the force sensitive characteristic of AT-cut quartz crystal resonators and the interior vibration wave transmission in crystal. According to the common-mode rejection theory, the resonance frequency of resonators on different places is ...
Wenjie Tian, Yuanyuan Cui, E. Ran, Yonghuai Ning, Fuxue Zhang   +4 more
openaire   +1 more source

Differential amplifiers that reject common-mode currents

IEEE Journal of Solid-State Circuits, 1971
The transistor differential pair is analyzed and it is shown that the common mode rejection ratio (CMRR) is limited both in magnitude and bandwidth by device parameters. The performance is not significantly improved by series common-mode feedback. It is shown that amplifiers with shunt common-mode feedback reject common-mode input currents and that ...
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Next Generation Measurement Systems with High Common-Mode Rejection

2018 IEEE 19th Workshop on Control and Modeling for Power Electronics (COMPEL), 2018
There is an increasing importance for floating measurements with high bandwidth in the field of power electronics, driven by the need to characterize power converters utilizing latest wide bandgap devices which offer very fast voltage transitions. In this paper, the required Common-Mode Rejection Ratio (CMRR) as the most important performance metric of
Pascal S. Niklaus, Dominik Bortis, Johann W. Kolar   +2 more
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Finite Common-Mode Rejection in Fully Differential Nonlinear Circuits

IEEE Transactions on Circuits and Systems II: Express Briefs, 2011
In this brief, it is highlighted that fully differential nonlinear circuits, even though perfectly symmetrical, can be significantly sensitive to common-mode (CM)/power-supply (PS) interference and can be affected by even-order distortion. The cross-modulation mechanism between CM and differential input components, which gives rise to such unwanted ...
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Common-mode rejection ratio in current-mode instrumentation amplifiers

Analog Integrated Circuits and Signal Processing, 1995
The current-mode instrumentation amplifier (CMIA) based on op-amp power-supply current sensing offers distinct advantages over conventional architecture designs. The CMIA is studied in detail and the CMRR expression is derived in terms of op-amp and transistor parameters.
W. J. Su, F. J. Lidgey
openaire   +1 more source

Achieving wide-band common-mode rejection in differential amplifiers

Proceedings of the IEEE, 1970
A design method is presented for achieving wide-band common-mode rejection (CMR) in discrete or integrated differential amplifiers. The method, which is supported by experiment, shows that there is an optimum (noninfinite) value for the tail impedance, and that infinite rejection can be achieved at any frequency even in the asymmetrical case.
C. Sripaipan, W.H. Holmes
openaire   +2 more sources

Differentially tunable varactor with built-in common-mode rejection

The 2002 45th Midwest Symposium on Circuits and Systems, 2002. MWSCAS-2002., 2003
A differentially tunable MOS varactor with enhanced intrinsic common-mode noise rejection is proposed and analyzed. Using a complementary topology the C-V characteristics of two MOSFETs are arranged to sum under differential excitation and to roughly cancel under common-mode excitation.
S.K. Magierowski, K. Iniewski, S. Zukotynski   +2 more
openaire   +1 more source