Ka band

From Wikipedia, the free encyclopedia

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 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 V W edit

The K_a band (Pronounced: "Kay-A Band") is a portion of the K band of the microwave band of the electromagnetic spectrum. K_a band roughly ranges from 18 to 40 GHz. This terminology refers to the "K-above" band, which is the upper 1/3 or so of the complete K band. The so-called 30/20 GHz band is used in communications satellites, downlink in either the 18.3–18.8 GHz or 19.7–20.2 GHz bands, and high-resolution, close-range targeting radars aboard military airplanes. The uplinks for the 30/20 GHz communications systems are in the neighborhood of 30 GHz. The term “K_a band” is frequently used to refer to the recommended operating frequencies of WR-28 rectangular waveguide, which is 26.5 to 40.0 GHz. This radar band is also used for vehicle speed detection by law enforcement.

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 · L band · Q band · Ka band · K band · Ku band · X band · S band · C band Radio EHF · SHF · UHF · VHF · HF · MF · LF · VLF · ULF · SLF · ELF Wavelength types Microwave · Shortwave · Mediumwave · Longwave