Why high frequency is used in communication?

Digital communication systems such as Bluetooth and some of the 802.11 protocols operate in the low-gigahertz range, more specifically, at frequencies near 2.4 GHz . These are generally short-range systems, but they offer reliable communication and the high carrier frequency enables high data rates.

ITU Band nameAbbreviationFrequency and WavelengthMedium frequencyMF300–3,000 kHz 1,000–100 mHigh frequencyHF3–30 MHz 100–10 mVery high frequencyVHF30–300 MHz 10–1 mUltra high frequencyUHF300–3,000 MHz 100–10 cmRadio spectrum – Wikipedia en.wikipedia.org › wiki › Radio_spectrum

Nowadays, radio communication or radio frequency communication refers to wireless communication through the air with electromagnetic wave frequencies ranging from 3 kHz to 300 GHz . Wireless communication is now classified by the medium electromagnetic waves propagate through.

Originally Answered: Why do we use high frequency waves as carrier waves? HF (2 – 30 MHz) is used for long distance communications because the atmosphere acts to bend these rays and bounce them back towards earth, so that they can travel all over the world, using very modest power to do so .