EHF stands for Extremely High Frequency. It is a term primarily used in the field of radio communication and telecommunications to define a range of electromagnetic frequencies.
EHF refers to a band of frequencies in the electromagnetic spectrum that spans from 30 gigahertz (GHz) to 300 gigahertz (GHz). This frequency range places EHF above the microwave frequency band and below the terahertz frequency band.
Due to the very high frequency range of EHF, it is commonly associated with various advanced communication technologies and applications. EHF signals have a shorter wavelength, which allows for higher data transmission rates and increased bandwidth. This makes EHF particularly suitable for various types of wireless communication systems, including point-to-point communication links, satellite communication, and radar applications.
In addition to communication, EHF frequencies are also used in various scientific fields such as astronomy, atmospheric research, and spectroscopy. The high resolution and sensitivity afforded by EHF frequencies enable scientists to study and analyze the properties of different materials and the composition of the Earth's atmosphere.
EHF signals experience higher levels of attenuation and are more susceptible to interference compared to lower frequency bands. This requires specialized antenna design and careful consideration of atmospheric conditions for successful communication at EHF. However, the advantages of increased bandwidth and data transmission rates make EHF a valuable resource for many modern communication technologies.