New PDF release: Systeme mit Nichtlinearen oder Gesteuerten Elementen /

By W. Bader (auth.), Dipl.-Ing. J. Wosnik (eds.)

ISBN-10: 3663031705

ISBN-13: 9783663031703

ISBN-10: 3663043592

ISBN-13: 9783663043591

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Extra resources for Systeme mit Nichtlinearen oder Gesteuerten Elementen / Systems with Non-Linear or Controllable Elements

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Here. C (V) represents the variable part of the capacitance just described and C the fixed capacitance. It is the terminal capacitance we measure with no applied drive. C is a function Another factor which makes the noise performance of this diode so attractive is that the variation of capacitance does not involve the flow across the junction of charge carriers. Hence, we would expect shot noise to be negligible. This has indeed been confirmed theoretically by U h 1 i r . Fig. 002m m DIA C Rs fMAX.

The circulator serves to separate input from output and also to prevent noise originating in the output load from feeding back to the amplifier and being amplified tuned pump rejection filter which may be inserted between the amplifier and terminal 2 of the circulator. Variable-Capacitance Effect in Semiconductor Junction Diodes The variable-capacitance diode constitutes the real heart of the parametric amplifier. In practical amplifiers it plays the role of the mechanically-pumped capacitor discussed before in connection with the low-frequency analog.

7. The active part consists of a P-type silicon base with a small cylindrical projection (mesa) of N -type material having a diameter of approximately . 02 mm. The wafer is solde red to a metal base and pressure contact is made to the mesa by a metallic post. The entire arrangement is enclosed in an evacuated metal-ceramic cartridge. Another type of diode which has aroused a great deal of interest during the very recent past is a point contact diode made of Gallium Arsenide. This diode was originally developed by S ha r p I es s at Bell Telephone Laboratories as a millimeter wave detector but recent tests by U e no h ara have shown it to possess excellent noise properties both at room temperature and at lower temperatures.

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Systeme mit Nichtlinearen oder Gesteuerten Elementen / Systems with Non-Linear or Controllable Elements by W. Bader (auth.), Dipl.-Ing. J. Wosnik (eds.)


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