December 1999
Intermediate to advanced
258 pages
5h 23m
English
Content preview from Essential Guide to RF and Wireless, The
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SOURCES
Block Diagram
Figure 3-19. Block diagram of an oscillator.
The last of the major building blocks is called a source or an oscillator (see Figure 3-19). An oscillator which provides one of the inputs to a mixer is referred to as a local oscillator or LO. (I guess this is to distinguish it from a remote oscillator, which is located on Venus.) Now you know what the LO port in a mixer does: it gets connected to an oscillator.
How Oscillators Work
While the actual workings of an oscillator is somewhat involved, it is very simple to understand conceptually. A power supply is connected and, in an ideal world, out comes a perfect sine wave ...
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