ITU Radio Band Numbers 4 5 6 7 8 9 10 11 ITU Radio Band Symbols ELF SLF ULF VLF LF MF HF VHF UHF SHF EHF NATO Radio bands A B C D E F G H I J K L M IEEE Radar bands HF VHF UHF L S C X Ku K Ka Q V W edit

The NATO E band is the range of radio frequencies from 2 GHz to 3 GHz in the electromagnetic spectrum. This is equal to wave lengths between 15 cm and 10 cm. The E band is in the upper UHF range of the radio spectrum. The NATO E band lies in the S band (2—4 GHz) of the older IEEE classification system.

The newer designation of "E-Band" lies in the extremely high frequency bands from 71 to 76 gigahertz (GHz), 81 to 86 GHz and 92 to 95 GHz. It is being used for short range, high bandwidth communications. ^[1]

Contents 1 Atmospheric Effects 2 Other Microwave bands 3 References 4 See also

[edit] Atmospheric Effects

At these high frequencies the short wavelengths give the radiation a very directional quality, similar to visible light. Many molecules possess rotational and vibrational states excited by very specific wavelengths in this band, thus the atmospheric gasses such as Oxygen, Water Vapor, Carbon Dioxide and Nitrogen can absorb, and be excited causing variable beam attenuation effects dependent on meteorological and atmospheric conditions.

[edit] Other Microwave bands

The microwave spectrum is usually defined as electromagnetic energy ranging from approximately 1 GHz to 100 GHz in frequency, but older usage includes lower frequencies. Most common applications are within the 1 to 40 GHz range. Microwave frequency bands, as defined by the Radio Society of Great Britain (RSGB), are shown in the table below:

L band	1 to 2 GHz
S band	2 to 4 GHz
C band	4 to 8 GHz
X band	8 to 12 GHz
Ku band	12 to 18 GHz
K band	18 to 26.5 GHz
Ka band	26.5 to 40 GHz
Q band	30 to 50 GHz
U band	40 to 60 GHz
V band	50 to 75 GHz
E band	60 to 90 GHz
W band	75 to 110 GHz
F band	90 to 140 GHz
D band	110 to 170 GHz

Footnote: P band is sometimes incorrectly used for Ku Band. "P" for "previous" was a radar band used in the UK ranging from 250 to 500 MHz and now obsolete per IEEE Std 521, see[2] and [3]. For other definitions see Letter Designations of Microwave Bands

[edit] References

[edit] See also

v • d • e Radio spectrum ELF 3 Hz 30 Hz SLF 30 Hz 300 Hz ULF 300 Hz 3 kHz VLF 3 kHz 30 kHz LF 30 kHz 300 kHz MF 300 kHz 3 MHz HF 3 MHz 30 MHz VHF 30 MHz 300 MHz UHF 300 MHz 3 GHz SHF 3 GHz 30 GHz EHF 30 GHz 300 GHz

v • d • e Electromagnetic spectrum ← shorter wavelengths       longer wavelengths → Gamma rays · X-rays · Ultraviolet · Visible · Infrared · Terahertz radiation · Microwave · Radio Visible (optical) Violet · Blue · Green · Yellow · Orange · Red Microwaves W band · V band · Q band · Ka band · K band · Ku band · X band · S band · C band · L band Radio EHF · SHF · UHF · VHF · HF · MF · LF · VLF · ULF · SLF · ELF Wavelength types Microwave · Shortwave · Medium wave · Longwave

This article about wireless technology is a stub. You can help Wikipedia by expanding it. v • d • e