Traditionally, tuning RF oscillator circuits has been a function of an adjustable capacitor. But capacitance is only part of the circuit, with inductance being the other important portion.

One area of research pursued the realization of a microwave oscillator based on RF photonics. Oscillators are devices that produce periodic waves whose amplitude, phase and frequency can be ...

In this case, the job at hand is creating an RF oscillator in the broadcast AM band and modulating some audio onto it. From his previous experience using an ESP32 to watch video on an oscilloscope ...