December 1999
Intermediate to advanced
258 pages
5h 23m
English
Content preview from Essential Guide to RF and Wireless, The
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MIXERS
Block Diagram
Figure 3-16. Block diagram of a mixer.
Ah, the evil mixer. The mathematics and physics underlying the functioning of a mixer (see Figure 3-16) are so complex, a spreadsheet is required to describe it. Fortunately, it is easy to explain conceptually.
The Mixer's Function
The Mathematics
The purpose of a mixer is to change the frequency of a signal while hopefully keeping everything else about the signal the same. Visually, one signal enters the mixer at the left side at one particular frequency (f1), while another signal enters the bottom of the mixer at a second frequency (f2), and what comes out of the right side are ...
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