Super high frequency
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| super high frequency (SHF) |
|---|
| Cycles per second: 3 GHz to 30 GHz Wavelength: 100 mm to 10 mm |
Super high frequency (or SHF) refers to radio frequencies (RF) in the range of 3 GHz and 30 GHz.
Description
The International Telecommunication Union (ITU), a international civil organization established to standardized worldwide telecommunications, have stated that the superhigh frequency is encountered between 10 cm to 1 cm. Microwaves are part of this frequency, but also include ultra-high frequency (UHF) and extremely high frequency (EHF) signals. Super high frequency electromagnetic waves are relatively short for radio waves. This frequency is used for microwave devices, mobile phones (W-CDMA), WLAN, most modern Radars. The commencing Wireless USB technology will be using aprox. 1/3 of this spectrum.
Uses
Some uses are IEEE 802.11a Wireless LANs, Satellite uplink/downlinks and terestrial high-speed data links which are sometimes referred to as "backhauls".
| Radio spectrum | ||||||||||
| ELF | SLF | ULF | VLF | LF | MF | HF | VHF | UHF | SHF | EHF |
| 3 Hz | 30 Hz | 300 Hz | 3 kHz | 30 kHz | 300 kHz | 3 MHz | 30 MHz | 300 MHz | 3 GHz | 30 GHz |
| 30 Hz | 300 Hz | 3 kHz | 30 kHz | 300 kHz | 3 MHz | 30 MHz | 300 MHz | 3 GHz | 30 GHz | 300 GHz |
| 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
|
External articles
- Tomislav Stimac, "[Definition of frequency bands (VLF, ELF... etc.)]". IK1QFK Home Page (vlf.it).
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