July 2013
Beginner
224 pages
5h 46m
English
Content preview from Introduction to SNG and ENG MicrowaveBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Antennas
An antenna is another name for an aerial. It is essentially a device for radiating or receiving electromagnetic waves, and is vital in radio communication systems. There is little fundamental difference between transmitting antennas and receiving antennas, since the same antenna is often used for both purposes (as we shall see later when we look at SNG). While some antennas can be as simple as a wire thrown out of a window, for the best performance the right type of antenna needs to be used!
The most important properties of an antenna are its radiation pattern and its gain (magnification of the signal), whether it is being used at the transmitter or receiver. In the case of a transmitting antenna, the radiation pattern is a plot of ...
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