Definition

1. Noun:
   • The angle of arrival or departure of a radio wave relative to the axis of an antenna array: This is a technical term in telecommunications and antenna theory. It describes the direction from which a radio signal arrives at an antenna system or the direction in which it is transmitted, measured relative to a central reference line (the axis) of the antenna array.

Usage Examples

• Noun:
  • The system calculates the signal's wave angle to determine its point of origin.
  • Adjusting the wave angle of transmission can improve the signal strength in the target area.
  • A key parameter in beamforming is the accurate estimation of the wave angle.

Advanced Usage

• "Angle of arrival (AoA)": A common synonym in positioning systems, referring specifically to the wave angle of an incoming signal.

  • The device uses the wave angle, or angle of arrival, to triangulate the transmitter's location.

• "Angle of departure (AoD)": Refers to the wave angle of an outgoing signal.

  • The base station controls the wave angle of departure to steer the beam toward the user.

Variants and Related Words

• Beam angle: Often related, but typically refers to the width of the transmitted signal pattern rather than its specific directional axis.
• Azimuth angle: In a horizontal plane, the wave angle is often given as an azimuth.
• Elevation angle: The vertical component of a wave angle in a three-dimensional coordinate system.

Synonyms

• Angle of arrival (AoA)
• Angle of departure (AoD)
• Direction of arrival (DoA): A very close synonym, though it can be a more general vector description.

Related Technical Phrases

• Wave angle estimation: The process of determining the wave angle.

  • Wave angle estimation is crucial for the functionality of smart antenna systems.

• Wave angle spectrum: A representation of the distribution of signal power across different wave angles.

  • The analysis of the wave angle spectrum revealed multiple signal paths.

Noun

1. the angle of arrival (or departure) of a radio wave with respect to the axis of an antenna array