Since radio waves are electromagnetic waves propagating by way of both an electrical component and a magnetic component, I‘m wondering if the modulating information exists in both the electric field and in the magnetic field simultaneously, or just in the electric field alone?
The modulation is done by changing the waveform's frequency or amplitude. It doesn't change the character of the EM wave at all. There's no way to change only one component without changing the other. Any modifications must be on both.
you're puzzling time-area with frequency-area. whilst a 'provider' is modulated via (prolonged via) yet another sine wave, there'll be 4 words in the ensuing expression. the two unique frequencies, their sum, and their distinction. it extremely is the sum and distinction words that comprise all the modulation advice. Doug
Must be both. AFAIK the magnetic and electric components are proportional to each other at all times in classical mechanics. Quantum-mechanically, in some weird anistropic magnetic material, I'm out of my depth. For normal AM/FM radio transmissions, I'm fairly certain.
