If radio waves were just continuous, unbroken tones, they wouldn't carry any information. It would be like a person humming a single note endlessly—it carries no meaning. To communicate, we need to change the wave. This process is called Modulation.
There are two primary ways we "shape" a wave to carry data: Wireless Communications from the Ground Up- An ...
In modern digital communications (like 5G or Wi-Fi), we use complex versions of these techniques to squeeze billions of bits of data into every second of transmission. If radio waves were just continuous, unbroken tones,
You are not alone. Ten thousand other phones, Wi-Fi routers, baby monitors, and Bluetooth earbuds are screaming in the same frequency bands. To your receiver, every other transmission sounds like random noise. In modern digital communications (like 5G or Wi-Fi),
Think of the wave as a blank canvas. You can change three things about it:
As the wave expands outward like an inflating balloon, its power spreads over a larger area. By the time it reaches your phone, the power is proportional to 1 / (distance^2). Double the distance → quarter the power. This is why cell towers are everywhere.