W band
From Wikipedia, the free encyclopedia
The W band of the microwave part of the electromagnetic spectrum and ranges from 75 to 111 GHz. It sits above the U.S. IEEE designated V band (50–75 GHz) in frequency, yet overlaps the NATO designated M band (60–100 GHz). The W band is not heavily used, except for millimeter wave radar research and other kinds of scientific research.
A frequency around 77 GHz is used for automotive cruise control radar. The atmospheric window at 94 GHz is used for imaging mm-wave radar applications in astronomy, defense and security applications.
| The Electromagnetic Spectrum (Sorted by wavelength, short to long) | |
| Gamma ray | X-ray | Ultraviolet | Visible spectrum | Infrared | Terahertz radiation | Microwave | Radio waves | |
| Visible (optical) spectrum: | Violet | Blue | Green | Yellow | Orange | Red |
|---|---|
| Microwave spectrum: | W band | V band | K band: Ka band, Ku band | X band | C band | S band | L band |
| Radio spectrum: | EHF | SHF | UHF | VHF | HF | MF | LF | VLF | ULF | SLF | ELF |
| Wavelength designations: | Microwave | Shortwave | Mediumwave | Longwave |
[edit] References
- 5th Framework Programme Information Societies Technologies (IST) - Multifunctional Automotive Radar Network (RadarNet) [1]
- The design of a real-time 94- GHz passive millimetre-wave imager for helicopter operations, R. Appleby, R. Anderton, N. Thomson, J. Jack, Proc. SPIE, 5619, pp. 38 (2004). DOI:10.1117/12.581336
