Graphite 发表于 2025-3-26 21:12:20

Propagationd with a current there is a magnetic field (e.g. consider an inductor) and associated with a voltage there is an electric field (as in a capacitor). It is therefore equally appropriate to consider a signal as consisting of magnetic and electric fields.

荧光 发表于 2025-3-27 01:10:41

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寡头政治 发表于 2025-3-27 06:00:27

978-0-333-64689-2The Editor(s) (if applicable) and The Author(s), under exclusive license to Macmillan Education Limi

acrimony 发表于 2025-3-27 12:46:34

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considerable 发表于 2025-3-27 14:44:39

https://doi.org/10.1007/978-3-319-56681-8nel can be considered in two parts: from the computers to the modems, and between the modems. In both cases we need a transmission path and some means of coding the data to ensure that it can be transmitted over the link.

Pander 发表于 2025-3-27 20:01:41

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小卒 发表于 2025-3-27 23:30:32

Basic Conceptsk is to help the reader achieve that aim. However, it is not just change that makes the subject difficult but also the extensive use of jargon, e.g. the liberal use of TLAs — or Three Letter Acronyms! Jargon helps an expert to be precise and avoid misunderstanding, but it also enables fellow practit

Confess 发表于 2025-3-28 05:22:00

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instructive 发表于 2025-3-28 08:36:34

Transmission Lines medium. Three different classes of media are covered in this and the following two chapters: copper cables, free space (or wireless) links, and fibre optic cables. Although treated as three different cases it is important to grasp the similarity between them: in all cases signals are being sent as

鞭子 发表于 2025-3-28 10:55:45

Propagationd with a current there is a magnetic field (e.g. consider an inductor) and associated with a voltage there is an electric field (as in a capacitor). It is therefore equally appropriate to consider a signal as consisting of magnetic and electric fields.
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查看完整版本: Titlebook: Data Communications and Transmission Principles; An Introduction Andrew Simmonds Textbook 1997Latest edition The Editor(s) (if applicable)