Network Protocols in Digital Communication

Network Protocols in Digital Communication: "Intelligent" (microprocessor-controlled) switching systems have become the hubs of intelligent networks. Terminal devices and line connection equipment have also been given microprocessor "brains," and thus…

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Switching Systems in Digital Communication

Switching Systems in Digital Communication: If only two sites are to be connected, switching is not required. The two facilities are interconnected on a point-to-point basis. However, switching is likely…

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Tunnel Diode Applications

Tunnel Diode Applications: In all its Tunnel Diode Applications, the tunnel diode should be loosely coupled to its tuned circuit. With lumped components, this is done by means of a…

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Parametric Amplifier Types

Parametric Amplifier Types: The basic Parametric Amplifier Types have already been discussed in detail, but several others also exist. They differ from one another in the variable reactance used, the…

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Parametric Amplifier

Parametric Amplifier: The parametric amplifier uses a device whose reactance is varied in such a manner that amplification results. It is low-noise because no resistance need be involved in the…

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Microwave Transistors

Microwave Transistors: Silicon bipolar transistors were first on the microwave scene, followed by GaAs field-effect transistors. Indeed, FETs now have noticeably lower noise figures, and in the C band and…

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High Frequency Limitations

High Frequency Limitations: As stated, transistors suffer from High Frequency Limitations. These are of a twofold nature. On the one hand, there are the same difficulties as those encountered with…

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