Automotive Radar 77 GHz
Adaptive cruise control (ACC) · Automatic emergency braking (AEB) · Blind spot detection
| Frequency Range | 76–81 GHz |
| Wavelength | 3.7–3.9 mm |
| ITU / Standard | — |
Applications
- →Adaptive cruise control (ACC)
- →Automatic emergency braking (AEB)
- →Blind spot detection
- →Lane change assist
- →Parking assistance
Propagation Characteristics
Short wavelength enables very compact phased array antennas. 5 GHz bandwidth allows <3 cm range resolution. Less interference from rain than 24 GHz radar.
Regulatory Notes
EU: ECC Decision (04)03. US: FCC Part 15.253. Global harmonization underway. Replacing 24 GHz radar. Typical EIRP: 55 dBm max.
Related Calculators
Wavelength / Frequency
Convert between frequency, wavelength, and wave number in free space or medium. Calculate half-wave and quarter-wave lengths for antenna and transmission line design.
Radar Range
Calculate maximum radar detection range using the radar range equation, including RCS, antenna gain, noise figure, and bandwidth parameters
Free-Space Path Loss
Calculate free-space path loss (FSPL) using the Friis transmission equation for wireless link budget analysis