Observer design for differential difference systems

Chhotaray, R.K.; Mohanty, A.K.

doi:10.1049/el:19810015

Electron. Lett. (UK)

1981

DOI: 10.1049/el:19810015

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Observer design for differential difference systems

R.K. Chhotaray

A.K. Mohanty

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1983

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Cited by 2 publications

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A Novel Schmitt-Trigger Circuit with GaAs MESFETs

Enning¹

1990

Frequenz

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A Schmitt trigger (S.T.) circuit with steplike transition has been realized built with three GaAs MESFETs. The circuit uses the properties of negative output resistance of a MESFET. Threshold and/or hysteresis width arc adjustable. A circuit description and first experimental results are presented.Übersicht: Eine neuartige, realisierte Schmitt-Trigger-Schaltung wird vorgestellt, deren Übergangskennlinie nahezu ideales Sprungverhalten aufweist. Ausgenutzt werden die Eigenschaften eines MESFETs mit negativem Ausgangswidcrstand. Schwelle und Breite der Hysterese sind einstellbar. Das Schaltungsprinzip wird beschrieben, erste experimentelle Ergebnisse werden angegeben.Für die Dokumentation: GaAs MESFET / negativer Widerstand / Schmitt-Trigger / aktive Last

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A Novel Schmitt-Trigger Circuit with GaAs MESFETs

Enning¹

1990

Frequenz

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Sum-Frequency Wave Generation in Optical Fibers

Sasaki¹,

Ohmori²

1983

Journal of Optical Communications

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The generation of two-wave sum-frequency waves in optical fibers is presented. A mode-locked and/or Q-switched Nd: YAG laser operating at 1.064 μπι wavelength is used as a pump laser. The sum-frequency waves are generated from the pump and the Raman Stokes lines. Phase matching is achieved by using the dispersion of the waveguide modes or the cladding modes in the optical fibers. When utilizing waveguide modes, 10 ~ 3 conversion efficiency from the pump into the sumfrequency wave, whose peak wavelength is 0.54 μιη, is obtained with a 0.8 kW peak pump power. The observed coherence length for the sum-frequency wave generation is found to be about 200 meters. The experimental results indicate that the origin for the sum-frequency wave generation in the optical fibers is quadrupole nonlinearity.

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Observer design for differential difference systems

Cited by 2 publications

References 4 publications

A Novel Schmitt-Trigger Circuit with GaAs MESFETs

A Novel Schmitt-Trigger Circuit with GaAs MESFETs

Sum-Frequency Wave Generation in Optical Fibers

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