Definition

Noun: - Extremely High Frequency: A band of radio frequencies in the range of 30 to 300 gigahertz (GHz). It is the highest radio frequency band, used in applications like radio astronomy, advanced radar systems, and some high-capacity wireless data links.

Usage

• As a subject: "EHF is used for secure military communications."
• As an object: "The new satellite operates within the EHF band."
• With modifiers: "The extremely high frequency (EHF) waves have very short wavelengths."

Examples

• Scientific: "Researchers are studying atmospheric absorption at EHF."
• Technical: "This device can transmit data using EHF signals."
• General: "EHF is above the SHF (Super High Frequency) band in the electromagnetic spectrum."

Advanced Usage

• "EHF spectrum": Refers to the entire range of these specific radio frequencies.
  • Allocation of the EHF spectrum is strictly regulated.
• "EHF band": Specifically denotes this frequency range as a distinct category.
  • The new protocol utilizes a wider channel in the EHF band.

Variants and Related Words

• Extremely High Frequency (EHF): The full term for the abbreviation.
• Millimeter wave: A common synonym, as EHF wavelengths are between 1 and 10 millimeters.
• SHF (Super High Frequency): The adjacent, lower frequency band (3-30 GHz).
• Radio frequency (RF): The broader category encompassing all frequencies used for radio communication.

Synonyms

• Millimeter wave band: A descriptive synonym based on wavelength.
• 30-300 GHz band: A technical synonym specifying the frequency range.

Related Phrases

• EHF communication: Communication systems that use EHF frequencies.
  • EHF communication is less susceptible to interception.
• EHF radiation: The electromagnetic waves in this frequency range.
  • The effects of EHF radiation on materials are being tested.

Noun

1. 30 to 300 gigahertz