A microwave antenna is like a magic wand which sends and receives signals through thin air. It's like sending a secret message to your friend who's standing far away from you, but instead of whispering, you use big gestures with your wand-like stick.
This special wand (antenna) can send and receive signals just like magic. When you want to send a message, you use a special tool to create a signal which is like a magic spell. The antenna then takes this signal and sends it out into the air like a bright light. This light travels at a very fast speed and carries your message with it. When your friend's antenna detects this signal, it can read it and understand your message.
Similarly, when someone sends you a message, their antenna sends out a signal, which travels through the air like a bright light until it reaches your antenna. Your antenna reads this signal and then converts it into a message you can understand.
So, a microwave antenna is like a magic wand that helps send and receive messages through the air without any wires. It's like having a superpower to communicate with anyone, anywhere, just by waving a wand.