- #1
jaydnul
- 558
- 15
When an RF antenna absorbs a signal, the momentum is transferred in quantized photon-electron interactions. The electrons in the metal will be given both perpendicular momentum (the actual signal information) and momentum in the direction of propagation (shown below):
The momentum in the direction of propagation is a conservation of the photon's linear momentum, but what about the perpendicular momentum? Where does that come from? The photon's angular momentum/spin?
The momentum in the direction of propagation is a conservation of the photon's linear momentum, but what about the perpendicular momentum? Where does that come from? The photon's angular momentum/spin?