Frequency Doubler Circuit Using Op Amp. The op amp mixer uses a square wave lo to flip the polarity of the rf input. This is a nice setup because i can put any number of diodes into either virtual ground and build any arbitrary superposition of exponentials.
I smell a multiplier. The lm324 is widely used in various circuits that is because the lm324 quad op amp has a wide range of power supply voltage small static power consumption can be used with a single power supply etc. The op amp mixer uses a square wave lo to flip the polarity of the rf input.
In this blog we will analyze 10 very practical and easy to understand lm324 circuits for you figure 1.
The op amp mixer uses a square wave lo to flip the polarity of the rf input. You can continually repeat this trick to obtain a frequency series of 2xf in 4xf in 8xf in and so on. The actual circuit in figure 1 uses a single supply dual op amp to help perform the rectification. The lm324 is widely used in various circuits that is because the lm324 quad op amp has a wide range of power supply voltage small static power consumption can be used with a single power supply etc.
