Table of Contents:
- Introduction & Review
- Radiative Decay
- Polarization and Energy Decay
- Macroscopic Polarization Decay
- Stochastic Model of Polarization Decay
INTRODUCTION & REVIEW
To begin, we will discuss the principle of operation of a radio frequency (RF) dipole antenna. RF antennae are being used all around you: at radio stations to transmit MHz sound waves so that you can listen to the latest hits in your car, for television networks, to transmit and receive messages, calls, internet, etc, on your cell phone. Most of the time this is in the form of a circuit, where the RF antennae could be on the order of microns long. RF antennae design and implementation is a very interesting field that we won’t get into here, but those interested should look further at Pozar’s “Microwave Engineering” for a better picture of how RF antennae are designed for drive circuitry.
For us, it is more interesting to see how an RF antenna works on an atomic level.