I doubt that you will find a book that covers only mixers.
But basically there are two very different methods to mix (modulate) one signal with another.
Switching mixers just use one signal to violently chop the other completely on and off, the only problem with that is a lot of harmonics and high order products are produced by the very abrupt switching process.
The other way to do it is by using true linear modulation, where there should be no harmonics generated if the multiplying process is truly linear.
After a quick search, this is the best I could find:
https://www.analog.com/library/analogdialogue/archives/47-06/multipliers_modulators.html
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I doubt that you will find a book that covers only mixers.
But basically there are two very different methods to mix (modulate) one signal with another.
Switching mixers just use one signal to violently chop the polarity of the other signal, the only problem with that is a lot of odd harmonics are produced by the very abrupt switching process.
The other way to do it is by using true linear modulation, where there should be no harmonics generated if the multiplying process is truly linear.
After a quick search, this is the best I could find:
https://www.analog.com/library/analogdialogue/archives/47-06/multipliers_modulators.html