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High gain antennas in a random environment
Ninth IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (Cat. No.98TH8361), 2002The scattering environment encountered in mobile and personal communications is usually not considered as a practical background for directive antennas. However, when using adaptive antennas such as antenna arrays at each end of the link it is possible on average to achieve array gains almost as high as in free space.
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Squeezing limits at high parametric gains
Physical Review A, 1991The generation of squeezed light in a single-pass parametric amplifier pumped by Gaussian beams is analyzed. Limits to the degree of squeezing that can be obtained are found that arise from spatial distortion of the signal beam that is significant for parametric gains greater than 3 dB.
, La Porta A, , Slusher
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On distributed high-gain adaptive stabilization
2019 IEEE 58th Conference on Decision and Control (CDC), 2019In this paper we consider adaptive distributed stabilization for uncertain multivariable linear systems with a time-varying diagonal matrix gain. We show that an unknown system matrix being an M-matrix is a sufficient condition to ensure uncertain linear systems to be stabilizable by matrix high gains, and derive a threshold condition to ensure ...
Zhiyong Sun 0001 +3 more
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Robustification of high gain adaptive control
2001 European Control Conference (ECC), 2001Adaptive controllers based on high gain feedback suffer from lack of robustness with respect to bounded disturbances. Existing modifications prevent the feedback gain from drifting, but introduce solutions that, even in the absence of disturbances, do not achieve regulation.
Polderman, J.W., Mareels, I.M.Y.
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High-order Čerenkov laser gain
Physical Review E, 2003Cerenkov free-electron lasers have primarily operated on the fundamental guided mode of the dielectric waveguide. Higher-order generation would allow short wavelength emission in a relatively large scale resonator. In comparison to the fundamental mode, we find that gain on higher-order modes can be significant in a planar geometry.
I J, Owens, J H, Brownell
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High-Gain Dual-Band Transmitarray
IEEE Transactions on Antennas and Propagation, 2017zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Rui Yuan Wu +4 more
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2018
The improvement of teacher performance requires the accurate identification of a teacher's strengths and weaknesses. However, effective teachers, in addition to utilizing certain effective teaching skills, are strengthened by certain affective skills which are difficult to identify and, consequently, to measure. The research has identified a whole host
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The improvement of teacher performance requires the accurate identification of a teacher's strengths and weaknesses. However, effective teachers, in addition to utilizing certain effective teaching skills, are strengthened by certain affective skills which are difficult to identify and, consequently, to measure. The research has identified a whole host
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Theory of the high-gain optical klystron
Physical Review A, 1992We present an analytic expression of the harmonic bunching produced by the dispersive section of a free-electron laser (FEL) optical klystron operating in the high-gain exponential regime. This model allows the evaluation of the operating constraints and limits, the possible optimizations and advantages of such a device with respect to the conventional
, Bonifacio, , Corsini, , Pierini
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High-gain adaptive position control
International Journal of Control, 2011High-gain adaptive position control is proposed for a stiff one-mass system (1MS) and an elastic two-mass system (2MS). The control objective is (load-side) position reference tracking and disturbance rejection (of load torques and friction). Position and speed are available for feedback.
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A Gain Selection Scheme for High-Gain Nonlinear Observers
IFAC Proceedings Volumes, 1998Abstract In this work we consider a gain selection scheme for high-gain nonlinear observers. The method is based on the exploitation of the structure of inverse Vandermonde matrix. The optimum eigenvalues are calculated numerically for low dimensions. The proposed scheme is illustrated for the synchronization of Chua's oscillator.
Ercan Solak, Ömer Morgül
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