Ultra high frequency

Definition

Ultra high frequency (UHF) refers to the portion of the electromagnetic spectrum with frequencies between 300 MHz and 3 GHz. It is commonly used for television broadcasting, mobile phones, and satellite communication.

5 Must Know Facts For Your Next Test

1. UHF ranges from 300 MHz to 3 GHz in the electromagnetic spectrum.
2. Common applications of UHF include TV broadcasts, mobile phones, Wi-Fi, and Bluetooth.
3. UHF waves are more susceptible to line-of-sight propagation but can penetrate buildings better than higher frequency waves.
4. The wavelength of UHF ranges from approximately 1 meter to 10 centimeters.
5. UHF is utilized in radar systems due to its ability to provide high resolution.

Review Questions

• What frequency range does ultra high frequency (UHF) cover?
• List three common applications that use UHF.
• Why are UHF waves generally better at penetrating buildings compared to higher frequency waves?

Related terms

Very High Frequency (VHF): Refers to the portion of the electromagnetic spectrum with frequencies from 30 MHz to 300 MHz, often used for FM radio and TV broadcasts.

Microwave: Part of the electromagnetic spectrum with frequencies ranging from about 1 GHz to over 100 GHz, used in radar, satellite communications, and microwave ovens.

$\lambda$ (Wavelength): $\lambda$ represents the distance over which a wave's shape repeats. Inversely proportional to frequency in the context of electromagnetic waves.