June 2000
Beginner
264 pages
8h 47m
English
Content preview from The Technician's EMI Handbook
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Chapter 10
Noise Cancellation Bridges
Whether you operate a radio receiver, or some piece of scientific or medical instrumentation, noise interferes with acquiring desired signals. Noise is bad. After all, radio reception and other forms of signals acquisition are essentially a game of signal-to-noise ratio (SNR). The actual values of the desired signal and noise signal are not nearly as important as their ratio. If the signal is not significantly stronger than the noise, then it will not be properly detected.
Getting rid of noise battering a signal is a major chore. Although there are a number of different techniques for overcoming noise, the method described herein can be called the “invert and obliterate” approach. This same idea was used ...
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