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Area Oscillations, signals and related devices / Noise and interference

IEV ref 702-08-52

Symbol
Req

en
(equivalent) noise resistance (of a one-port device)
quantity Req, having the dimensions of resistance, used to express the equivalent noise voltage En of a one port device through the relationship:

R eq = E n 2 4k T 0 Δf MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLnhiov2DGi1BTfMBaeXatLxBI9gBaerbbjxAHXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaeqabiGaciGacaqadmaadaqaaqaaaOqaaiaadkfadaWgaaWcbaGaaeyzaiaabghaaeqaaOGaeyypa0ZaaSaaaeaacaWGfbWaa0baaSqaaiaab6gaaeaacaaIYaaaaaGcbaGaaGinaiaaykW7caWGRbGaaGPaVlaadsfadaWgaaWcbaGaaGimaaqabaGccaqGuoGaaGPaVJqaciaa=zgaaaaaaa@461E@

where T0 is a reference thermodynamic temperature, fixed by convention around 290 K, Δf is the bandwidth considered and k is Boltzmann's constant

Note – A receiving antenna can be regarded as a one-port device when viewed from its output port.


fr
résistance (équivalente) de bruit (d'un monoporte) f
grandeur Req ayant les dimensions d'une résistance et servant à exprimer la force électromotrice de bruit En d'un monoporte par la relation:

R eq = E n 2 4k T 0 Δf MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLnhiov2DGi1BTfMBaeXatLxBI9gBaerbbjxAHXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaeqabiGaciGacaqadmaadaqaaqaaaOqaaiaadkfadaWgaaWcbaGaaeyzaiaabghaaeqaaOGaeyypa0ZaaSaaaeaacaWGfbWaa0baaSqaaiaab6gaaeaacaaIYaaaaaGcbaGaaGinaiaaykW7caWGRbGaaGPaVlaadsfadaWgaaWcbaGaaGimaaqabaGccaqGuoGaaGPaVJqaciaa=zgaaaaaaa@461E@

T0 est la température thermodynamique de référence fixée conventionnellement au voisinage de 290 K, Δf la largeur de bande considérée, et k la constante de Boltzmann

Note – Une antenne de réception vue de son accès de sortie peut être assimilée à un monoporte.


ar
مقاومة الضوضاء المكافئة

de
äquivalenter Rauschwiderstand, <eines Eintors> m

es
resistencia (equivalente) de ruido (de un dispositivo monopuerta)

it
resistenza (equivalente) di rumore (di un elemento a una porta)

ko
등가 잡음 저항, <1-단자쌍 장치>

ja
等価雑音抵抗, <一端子対デバイスの>
雑音電圧, <一端子対デバイスの>

pl
rezystancja równoważna szumu (dwójnika)
rezystancja szumu (dwójnika)

pt
resistência (equivalente) de ruído (de um monoporto)

sv
ekvivalent brusresistans

Publication date: 1992-03
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