W band
| ITU Radio Band Numbers
4 5 6 7 8 9 10 11 12 |
| ITU Radio Band Symbols
VLF LF MF HF VHF UHF SHF EHF |
| NATO Radio bands |
| IEEE Radar bands |
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 used for millimeter wave radar research, military radar targeting and tracking applications, and some non-military applications.
A number of Passive MMW cameras are available for Concealed Weapons Detection operating at 94 GHz. A frequency around 77 GHz is used for automotive cruise control radar. The atmospheric radio window at 94 GHz is used for imaging mm-wave radar applications in astronomy, defense, and security applications.
The 71 - 76 GHz / 81 - 86 GHz segment of the W-band is allocated by the International Telecommunication Union to satellite services. Owing to increasing spectrum and orbit congestion at lower frequencies, the W-band satellite allocations are becoming of increasing interest to commercial satellite operators, although no commercial project has yet been implemented in these bands.
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
External links
See Also
| 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 • Ka band • K 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 |
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