December 1999
Intermediate to advanced
258 pages
5h 23m
English
Content preview from Essential Guide to RF and Wireless, The
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AMPLIFIERS
Block Diagram
Figure 3-8. Block diagram of an amplifier.
This next device, shown in Figure 3-8, is called an amplifier, which makes signals bigger. RF signals constantly need to be made bigger as they move from place to place. It's just like driving a car. You drive around from place to place using up gas, and when you run low, you fill up. An amplifier is a filling station for RF signals. They move around from place to place (either in the air or along a conductor) and when they need a boost, hopefully there is an amplifier around. Visually, a small signal enters the large end of the block diagram (left side) and leaves as a large ...
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