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- Extremely_high_frequency abstract "Extremely high frequency is part of the radio frequency in the electromagnetic spectrum. EHF runs the range of frequencies from 30 to 300 gigahertz, above which electromagnetic radiation is considered to be low (or far) infrared light, also referred to as terahertz radiation. Radio waves in this band have wavelengths from ten to one millimetre, giving it the name millimetre band or millimetre wave, sometimes abbreviated MMW or mmW.Compared to lower bands, radio waves in this band have high atmospheric attenuation; they are absorbed by the gases in the atmosphere. Therefore they have a short range and can only be used for terrestrial communication over about a kilometer. In particular, signals in the 57–64 GHz region are subject to a resonance of the oxygen molecule and are severely attenuated. Even over relatively short distances, rain fade is a serious problem, caused when absorption by rain reduces signal strength. In climates other than deserts absorption due to humidity also has an impact on propagation. While this absorption limits potential communications range, it also allows for smaller frequency reuse distances than lower frequencies. The small wavelength allows modest size antennas to have a small beam width, further increasing frequency reuse potential.".
- Extremely_high_frequency thumbnail Micrwavattrp.png?width=300.
- Extremely_high_frequency wikiPageExternalLink 47cfr15.255.htm.
- Extremely_high_frequency wikiPageExternalLink millimeterwave.
- Extremely_high_frequency wikiPageExternalLink oet70a.pdf.
- Extremely_high_frequency wikiPageExternalLink description.html.
- Extremely_high_frequency wikiPageExternalLink bands.html.
- Extremely_high_frequency wikiPageID "683672".
- Extremely_high_frequency wikiPageRevisionID "606374943".
- Extremely_high_frequency bands "IEEE: Ka bandV bandW bandmm band".
- Extremely_high_frequency bands "ITU: EHF".
- Extremely_high_frequency bands "NATO: K bandL bandM band".
- Extremely_high_frequency freq "110".
- Extremely_high_frequency freq "30".
- Extremely_high_frequency hasPhotoCollection Extremely_high_frequency.
- Extremely_high_frequency name "Extremely high frequency".
- Extremely_high_frequency name "millimetre band".
- Extremely_high_frequency wave "1".
- Extremely_high_frequency wave "2.73".
- Extremely_high_frequency subject Category:Radio_spectrum.
- Extremely_high_frequency comment "Extremely high frequency is part of the radio frequency in the electromagnetic spectrum. EHF runs the range of frequencies from 30 to 300 gigahertz, above which electromagnetic radiation is considered to be low (or far) infrared light, also referred to as terahertz radiation.".
- Extremely_high_frequency label "Extremely high frequency".
- Extremely_high_frequency label "Extremely high frequency".
- Extremely_high_frequency label "Extremely high frequency".
- Extremely_high_frequency label "Extremely high frequency".
- Extremely_high_frequency label "Extrêmement haute fréquence".
- Extremely_high_frequency label "Fale milimetrowe".
- Extremely_high_frequency label "Frecuencia extremadamente alta".
- Extremely_high_frequency label "Millimeterwelle".
- Extremely_high_frequency label "تردد فائق العلو".
- Extremely_high_frequency label "ミリ波".
- Extremely_high_frequency label "極高頻".
- Extremely_high_frequency sameAs Millimeterwelle.
- Extremely_high_frequency sameAs Frecuencia_extremadamente_alta.
- Extremely_high_frequency sameAs Extrêmement_haute_fréquence.
- Extremely_high_frequency sameAs Frekuensi_amat_tinggi.
- Extremely_high_frequency sameAs Extremely_high_frequency.
- Extremely_high_frequency sameAs ミリ波.
- Extremely_high_frequency sameAs Extremely_high_frequency.
- Extremely_high_frequency sameAs Fale_milimetrowe.
- Extremely_high_frequency sameAs Extremely_high_frequency.
- Extremely_high_frequency sameAs m.032q35.
- Extremely_high_frequency sameAs Q570342.
- Extremely_high_frequency sameAs Q570342.
- Extremely_high_frequency wasDerivedFrom Extremely_high_frequency?oldid=606374943.
- Extremely_high_frequency depiction Micrwavattrp.png.
- Extremely_high_frequency isPrimaryTopicOf Extremely_high_frequency.
