| ITU Radio Band Numbers |
| ITU Radio Band Symbols |
| NATO Radio bands |
| IEEE Radar bands
HF VHF UHF L S C X Ku K Ka V W edit |
The W band of the microwave part of the electromagnetic spectrum and ranges from 75 to 111 GHz. Provision No 21 of the ITU Radio Regulations states 21 The Radio spectrum shall be subdivided into nine frequency bands which Very low frequency or VLF refers to radio frequencies (RF in the range of 3 KHz to 30 KHz. Low Frequency or LF refers to Radio Frequencies (RF in the range of 30 kHz&ndash300 kHz Medium frequency ( MF) refers to radio frequencies (RF in the range of 300 kHz to 3000 kHz High frequency (HF radio frequencies are between 3 and 30 MHz. Very high frequency (VHF is the Radio frequency range from 30 MHz to 300 MHz. Super high frequency (or SHF) refers to radio frequencies (RF in the range of 3 GHz and 30 GHz Extremely high frequency is the highest Radio frequency band. Provision No 21 of the ITU Radio Regulations states 21 The Radio spectrum shall be subdivided into nine frequency bands which Very low frequency or VLF refers to radio frequencies (RF in the range of 3 KHz to 30 KHz. Low Frequency or LF refers to Radio Frequencies (RF in the range of 30 kHz&ndash300 kHz Medium frequency ( MF) refers to radio frequencies (RF in the range of 300 kHz to 3000 kHz High frequency (HF radio frequencies are between 3 and 30 MHz. Very high frequency (VHF is the Radio frequency range from 30 MHz to 300 MHz. Super high frequency (or SHF) refers to radio frequencies (RF in the range of 3 GHz and 30 GHz Extremely high frequency is the highest Radio frequency band. Radio waves are electromagnetic waves occurring on the Radio frequency portion of the Electromagnetic spectrum. This is article is about the wireless term For other uses see A band (disambiguation. The B band is the range of radio frequencies from 250 MHz to 500 MHz in the Electromagnetic spectrum. C band is a name given to certain portions of the Electromagnetic spectrum, as well as a range of Wavelengths of Light, used for communications D band is the range of radio frequencies from 1 GHz to 2 GHz in the Electromagnetic spectrum. The NATO E band is the range of radio frequencies from 2 GHz to 3 GHz in the Electromagnetic spectrum. The F band is the range of radio frequencies from 3 GHz to 4 GHz in the Electromagnetic spectrum. NATO G band The G band in the modern (NATO/EU sense is the range of radio frequencies from 4 GHz to 6 GHz in the Electromagnetic The H band is the range of radio frequencies from 6 GHz to 8 GHz in the Electromagnetic spectrum. The I band is the range of radio frequencies from 8 GHz to 10 GHz in the Electromagnetic spectrum. The J band is the range of radio frequencies from 10 GHz to 20 GHz in the Electromagnetic spectrum. NATO K band The NATO K band is defined as a frequency band between 20 and 40 GHz (7 NATO L band The NATO L band is defined as the frequency band between 40 and 60 G[[Hertz Hz]] (5–7 The M band is the range of radio frequencies from 60 GHz to 100 GHz in the Electromagnetic spectrum. Radio waves are electromagnetic waves occurring on the Radio frequency portion of the Electromagnetic spectrum. High frequency (HF radio frequencies are between 3 and 30 MHz. Very high frequency (VHF is the Radio frequency range from 30 MHz to 300 MHz. NATO L band The NATO L band is defined as the frequency band between 40 and 60 G[[Hertz Hz]] (5–7 The S band ranges from 2 to 4 GHz, crossing the (artificial boundary between UHF and SHF at 3 C band is a name given to certain portions of the Electromagnetic spectrum, as well as a range of Wavelengths of Light, used for communications The X band is part of the Microwave region of the Electromagnetic spectrum. The Ku band ( pronounced "kay-yoo") is a portion of the Electromagnetic spectrum in the Microwave range of frequencies NATO K band The NATO K band is defined as a frequency band between 20 and 40 GHz (7 The Ka band (Pronounced "Kay-A Band" covers the frequencies of 26 The V band (vee-band of the Electromagnetic spectrum ranges from 40 to 75 GHz Microwaves are electromagnetic waves with Wavelengths ranging from 1 mm to 1 m or frequencies between 0 The electromagnetic (EM spectrum is the range of all possible Electromagnetic radiation frequencies The hertz (symbol Hz) is a measure of Frequency, informally defined as the number of events occurring per Second. 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 Institute of Electrical and Electronics Engineers or IEEE (read eye-triple-e) is an international Non-profit, professional organization The V band (vee-band of the Electromagnetic spectrum ranges from 40 to 75 GHz The M band is the range of radio frequencies from 60 GHz to 100 GHz in the Electromagnetic spectrum. 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 millimetre-wave cameras for concealed weapons detection operate at 94 GHz. A frequency around 77 GHz is used for automotive cruise control radar. Cruise control (sometimes known as speed control or autocruise) is a system that automatically controls the rate of motion of a Motor vehicle. The atmospheric radio window at 94 GHz is used for imaging millimetre-wave radar applications in astronomy, defense, and security applications. The radio window is the range of frequencies of Electromagnetic radiation that the Earth's atmosphere lets through Radar is a system that uses electromagnetic waves to identify the range altitude direction or speed of both moving and fixed objects such as Aircraft, ships
Less-than-lethal weaponry exists that uses millimeter waves to heat a thin layer of human skin to an intolerable temperature so as to make the targeted person move away. A two-second burst of the 95 GHz focused beam heats the skin to a temperature of 130 °F (54 °C) at a depth of 1/64th of an inch (0. 4 mm). The United States Air Force and Marines are currently using this type of Active Denial System. The Active Denial System (ADS is a Non-lethal, Directed-energy weapon developed by the U [1]
The 71 - 76 GHz / 81 - 86 GHz segment of the W-band is allocated by the International Telecommunication Union to satellite services. Because of increasing spectrum and orbit congestion at lower frequencies, W-band satellite allocations are 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
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