Results 251 to 260 of about 715,538 (308)

A twice curvature compensated voltage reference with double frequency compensation

Microelectronics Journal, 2020
Abstract This paper presents a voltage reference (VR) with low temperature coefficient (TC) and full frequency high power supply rejection ratio (PSRR), the VR is fabricated by 0.18 μm CMOS process. The proposed VR uses different methods to compensate for the temperature curvature of the output voltage twice.
Xifeng Liu, Shiwei Yang, Jianen Lu
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Compensated mel frequency cepstrum coefficients

1996 IEEE International Conference on Acoustics, Speech, and Signal Processing Conference Proceedings, 2002
The high concentration of energy in the low frequency range observed for most speech spectra is considered a nuisance because it makes less relevant the energy of the signal at middle and high frequencies in many speech analysis algorithms. This problem is often partially solved by filtering the input signal with a single-zero high pass filter.
R. Vergin, D. O'Shaughnessy, V. Gupta
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Thermal-Frequency-Drift Compensation

Proceedings of the IRE, 1942
The conditions necessary for minimizing frequency drift with variation of ambient temperature are examined for various types of circuits. In fixed-tuned circuits the drift can be eliminated by a comparatively simple adjustment of the temperature coefficient of capacitance.
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Self-compensating optical frequency conversion

Review of Scientific Instruments, 1983
A novel optical configuration is described for use with angle-tuned nonlinear frequency conversion crystals. By double passing the beams through the crystal, the new method suppresses wavelength-dependent beam displacements more thoroughly and conveniently than previous approaches.
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Low-Frequency Compensation of Video-Frequency Amplifiers

Proceedings of the IRE, 1945
The low-frequency response of a conventional multistage plate-compensated video amplifier is analyzed in terms of the distortion of a square wave as measured by a rounding of the wave form. Design criteria are derived to give control of the amount of rounding in the initial design of the amplifier.
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Frequency response compensation with dsp

IEEE Signal Processing Magazine, 2003
In modern telecommunication systems, there are situations when test instruments must work over hundreds of narrowband-frequency channels. It is difficult and expensive, however, to build hardware test equipment with a flat frequency response over their full operational frequency range.
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Biased Sinusoidal Disturbance Compensation With Unknown Frequency

IEEE Transactions on Automatic Control, 2013
This note combines an adaptive frequency estimation scheme with a fractional-order controller for unknown biased sinusoidal disturbance rejection. The disturbance is estimated via an adaptive orthogonal signals generator based on a third-order generalized integrator.
FEDELE, Giuseppe, Ferrise A.
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Frequency compensated A-C ammeters and voltmeters

Electrical Engineering, 1946
The increased use of a-c instruments over a frequency range of 25 to 3,000 cycles for aircraft and industrial applications has imposed new requirements on instrument design. It is recognized that the standard type of a-c ammeters and voltmeters normally calibrated for use at a given frequency are subject to errors in indication when used at other ...
J. M. Whittenton, C. A Wilkinson
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Frequency domain adaptive control: Band-wise compensation

Automatica, 1993
Abstract This paper gives a frequency domain adaptive control design based on the idea of band-wise compensation. Given an LTI unknown plant and a frequency domain specification, a frequency set where the open-loop frequency response compensation is required is first chosen.
Tang, Yu, Camacho, Eduardo F., Flores, Jose J.   +2 more
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Frequency Domain Compensation

1974
The purpose of this chapter is to present an in-depth study of certain frequency domain implications of linear state variable feedback (l.s.v.f.) from the point of view of the structure theorem in order to develop some rather general procedures for the compensation of linear multivariable systems.
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