Okay kiddo, a bias tee is a special piece of equipment that helps to send electrical signals down a wire. Think of it like a toy train set, where the train needs electricity to run. The bias tee is kind of like the train station that helps get the electricity to the train so it can go.
But with an actual bias tee, instead of trains and tracks we have electrical signals and wires. One part of the bias tee is called an "RF port" and the other part is called a "DC port". The RF port is where the electrical signal goes in and out of the bias tee. The DC port is where a special kind of electricity called DC power goes in.
To help you understand DC power, imagine it like a battery that helps give electrical devices energy to work. In the bias tee, the DC power is used to power up special things called amplifiers. These amplifiers help to make the electrical signals stronger, like when you turn up the volume on your favorite song.
So when the electrical signal and the DC power travel through the bias tee, they don't mix together. It's like when you put your apple juice in one cup and your friend's orange juice in another cup. They stay separate, but they both still get to the party!
With the bias tee, the electrical signal can travel through the RF port and get amplified by the amplifiers. Then it can be sent out to other devices to do cool things like play music or make a computer work. And that, my dear five-year-old friend, is what a bias tee does!