en

characteristic impedance

1

Terminological databases

Metroloogia terminibaas

ID 1185918 Last modified 19.07.2026
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Domain Standardisation - Metrology
  • suurus, mis saadakse suunava laine iseloomuliku takistuse korrutamisel sobiva teguriga
  • quantity obtained by multiplying the guide characteristic wave impedance by a suitable factor
antud režiimi kadudeta ülekandeliini takistus preferred
Usage examples
  • Põikielektromagnetrežiimis töötava ülekandeliini puhul saab pinget ja voolu üheselt määratleda ning selleks on kolm võrrandit. Lainejuhi korral aga tuleb tavapäraselt kasutada pinge ja voolu erimääratlusi ning seejärel saab tõdeda, et antud režiimi kadudeta ülekandeliini takistuse/iseloomuliku imedantsi arvutamiseks kolme erineva takistuse jaoks on kasutusel kolm võrrandit kujul Z = P/I2, Z = U2/P ja Z= U/I, kus Z - iseloomulik impedants, P - liikuva laine poolt kantav võimsus, U - pinge, I - voolutugevus.
characteristic impedance of a lossless transmission line for a given mode
Usage examples
  • For a transmission line operating in the transverse elctromagnetic mode, the voltage and current can be uniquely defined, and three equations are consistent. For a waveguide, special definitions for voltage and current must be conventionally adopted, and it is then found that the three equitions to three different values of characteristic impedance of a lossless transmission line for a given mode in the form Z = P/I2, Z = U2/P and Z = U/I, where Z - characteristic impedance, P - power carried by a travelling wave, U - voltage, I - current.
characteristic impedance

Metroloogia terminibaas

ID 1185919 Last modified 16.07.2026
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Domain Standardisation - Metrology
  • antud sagedusega liikuva elektromagnetlaine korral põikelektrivektori ja põikmagnetvektori kompleksne suhe punktis, kusjuures selle suhte märk on valitud nii, et reaalosa oleks positiivne
  • for a travelling electromagnetic wave of a given frequency, the ratio at a point of the complex magnitude of the transverse electric vector to that of the transverse magnetic vector, with the sign chosen so that real part is positive
lainetakistus preferred
Usage examples
  • Lainetakistus on vastava lainejuhi režiimifunktsioon ja on antud lainefrondi, st lainejuhi tasapinnalise ristlõike, kõigis punktides konstantne.
characteristic wave impedance
Usage examples
  • The characteristic wave impedance is a function of the waveguide mode concerned, and is constant at all points a given wavefront (usually a plane cross-section of the waveguide).

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