extremely-high frequencies (ehf)
1Extremely high frequency — Frequency range 30 to 300 GHz ITU Radio Band Numbers 1 2 3 4 5 6 7 8 9 10 …
2Super high frequency — (or SHF) refers to radio frequencies (RF) in the range of 3 GHz and 30 GHz. Also known as the centimeter band or centimeter wave as the wavelengths range from ten to one centimeters.DescriptionThe International Telecommunication Union (ITU), an… …
3Ultra high frequency — (UHF) designates a range (band) of electromagnetic waves with frequencies between 300 MHz and 3 GHz (3,000 MHz). Also known as the decimeter band or decimeter wave as the wavelengths range from ten to one decimeters. Radio waves with frequencies… …
4telecommunications media — Introduction equipment and systems metal wire, terrestrial and satellite radio, and optical fibre employed in the transmission of electromagnetic signals. Transmission media and the problem of signal degradation Every… …
5Espectro electromagnético — Saltar a navegación, búsqueda Diagrama del espectro electromagnético, mostrando el tipo, longitud de onda con ejemplos, frecuencia y temperatura de emisión de cuerpo negro. Se denomina espectro electromagnético a la distribución energética del… …
6Electromagnetic spectrum — The electromagnetic (EM) spectrum is the range of all possible electromagnetic radiation frequencies. [cite web|url=http://imagine.gsfc.nasa.gov/docs/dict ei.html#em spectrum|title=Imagine the Universe! Dictionary] The electromagnetic spectrum… …
7Radiofrecuencia — Este artículo trata sobre la parte del espectro electromagnético. Para los aspectos técnicos de las comunicaciones por este medio, véase Radiocomunicación. «RF» redirige aquí. Para el elemento químico de símbolo Rf, véase Rutherfordio. El término …
8Waveguide (electromagnetism) — In electromagnetics and communications engineering, the term waveguide may refer to any linear structure that guides electromagnetic waves. However, the original and most common meaning is a hollow metal pipe used for this purpose.A dielectric… …
9Microwave transmission — The atmospheric attenuation of microwaves in dry air with a precipitable water vapor level of 0.001 mm. The downward spikes in the graph correspond to frequencies at which microwaves are absorbed more strongly, such as by oxygen molecules… …
10Electromagnetic radiation — Electromagnetism Electricity · …
