Mixers

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  • Author: Microwaves 101

What's a mixer? It's a device that performs the task of frequency conversion, by multiplying two signals (why do you think that the schematic symbol for a mixer is an "X"?) Mixers are needed in most microwave systems because the RF signal is way too high to process its information (for example, looking for a Doppler shift in an X-band radar application, you won't find many A/D converters than can handle 10 GHz!)