I would like to ask if it is possible to apply Maxwell's law in the design of a variable-frequency electromagnetic wave emitter. Put simply, I would like to know if it is possible to design, using the concept I am about to put forward, a machine that can emit radio waves, micro waves, or any frequency of wave you want within the limits of the components of the circuit.
First of all, I am sure that someone has already done this, but I just couldn't google it up. Secondly, microwave generation is usually performed using an electron beam fired into a magnetic field, not using this.
Imagine a pair of electric plates with opposite charges facing each other. Imagine also a pair of wire coils which will serve as sources of a changing magnetic field at right angles to the pair or electric plates. Maxwell showed that electromagnetic waves (Light, radio waves, etc)
are composed of oscillating magnetic and electric components that are self sustaining and can move through a vacuum. Now, we run an alternating current through the plates and wire coils such that the space between them will have changing electric and magnetic fields at right angles to each other. The current flows such that the polarity of the electric fields and the magnetic poles are reversed at the same instant, thus ensuring that the generated electromagnetic wave will move in one direction only. Theoretically, this should produce an electromagnetic wave. If we increase the frequency of the alternating current, the frequency of the generated wave should increase too.
I'm not too sure if this will work. I wonder if I'm interpreting Maxwell's law wrongly, because after all, microwaves are generated by passing electrons, through a magnetic field, and not using the method I proposed, which does not make use of an electron beam. Any feedback, correction, or critique of my proposal is much appreciated.
(By the way, I'm just doing my first year in electronic and computer engineering, in university, so try to keep any technicalities to a minimum. Thanks.)