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LEFT-HAND POLARIZATION [9 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 - external organization data 2009-07-30

English

Subject field(s)
  • Compartment - ISO/IEC JTC 1 Information Technology Vocabulary
Universal entry(ies)
06.01.92 (19762)
ISO/IEC standard entry number
DEF

polarization of a propagating wave is determined by the locus or path described by the electric field vector with respect to time

OBS

Polarization is a term that often arises in the literature and when considering radio frequency communication and RFID. If we ascribe an x, y, z co-ordinate system to a propagating wave as illustrated below, with the direction of propagation being in the z direction, the electric field vector E will be in the x, y plane. If E remains in the same orientation with respect to time, so that its locus describes a straight line, the wave is said to be linearly polarized. However, if the locus describes a circular motion with respect to time the wave is said to be circularly polarized. Where the locus describes an elliptical path, the wave is said to be elliptically polarized.

OBS

Circular polarization is often used in communication systems since the orientation of the transmitting and receiving antenna is less important than it is with linearly polarized waves. The magnetic vector, H, always remains perpendicular to the E vector. Using an IEEE convention, a clockwise circular rotating wavefront approaching a receiver is defined as being left-hand circular(LHC) polarized. The power in the wavefront is expressed in the form of the Poynting vector, P : P=(E x H)=E x H sin..., where... is the phase angle between E and H.

OBS

polarization summary: term and definition standardized by ISO/IEC [ISO/IEC 19762-4:2008].

French

Spanish

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Record 2 2008-05-23

English

Subject field(s)
  • Electrical Engineering
  • Telecommunications
CONT

The most common form of elliptical polarization is that of circular polarization, and it occurs when the tip of the rotating electric vector traces a circle in space as it travels away from the observer. Two classifications of circular polarization are right-hand circular and left-hand circular... In right-hand circular polarization, the electric vector rotates in a clockwise direction as the electric vector travels away from the observer...

Key term(s)
  • right-hand circular polarization
  • right-hand circular polarisation

French

Domaine(s)
  • Électrotechnique
  • Télécommunications
DEF

[Onde] à polarisation elliptique ou circulaire, dans laquelle le vecteur champ électrique, observé dans un plan fixe quelconque normal à la direction de propagation, tourne vers la droite (sens horaire) dans le temps quand on regarde dans la direction de propagation.

Spanish

Campo(s) temático(s)
  • Electrotecnia
  • Telecomunicaciones
CONT

Mirando a la dirección de rotación del vector campo eléctrico desde la dirección en la que el haz se propaga, si esta dirección es en el sentido de las agujas del reloj, se trata de polarización circular derecha. Si esta dirección es en sentido contrario al de las agujas del reloj, ésta es llamada polarización circular izquierda.

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Record 3 2007-01-26

English

Subject field(s)
  • Space Exploration Equipment and Tools
  • Spacecraft
CONT

The above deck equipment is usually some form of tracking dish, with a circular polarized feed arrangement. This usually takes the form of an helical antenna, wound with left-hand circular polarization. The signal from the satellite is right-hand circular polarization, but since the signal is reflected by the dish, polarization sense is reversed. This is the same principle as if you were to look in a mirror; your image is reversed.

OBS

Inmarsat satellite.

French

Domaine(s)
  • Équipement et outillage d'exploration spatiale
  • Engins spatiaux

Spanish

Save record 3

Record 4 2006-04-06

English

Subject field(s)
  • Radio Waves
DEF

Polarization such that the electric field strength vector or a specified field vector rotates in function of time in a counter-clockwise sense in any fixed plane normal to the direction of propagation or to a specified reference direction, as seen by an observer looking in this direction.

French

Domaine(s)
  • Ondes radioélectriques
DEF

Polarisation telle que, pour un observateur regardant dans la direction de propagation ou dans une direction de référence spécifiée, le vecteur champ électrique ou un vecteur de champ spécifié tourne, en fonction du temps, dans un plan fixe normal à cette direction et dans le sens contraire à celui des aiguilles d'une montre.

OBS

sénestrorsum : Cette graphie, puisée des Rectifications de l'orthographe recommandées par le Conseil supérieur de la langue française, est attestée dans le Petit Robert (2006).

Key term(s)
  • polarisation sénestrorsum

Spanish

Campo(s) temático(s)
  • Ondas radioeléctricas
DEF

Polarización tal que el vector del campo eléctrico o un vector de campo determinado rota en función del tiempo en el sentido contrario al de las agujas del reloj en cualquier plano fijo perpendicular a la dirección de propagación o a una dirección de referencia determinada, visto por un observador que mira en esta dirección.

Save record 4

Record 5 2004-05-17

English

Subject field(s)
  • Electrical Engineering
  • Telecommunications
CONT

The most common form of elliptical polarization is that of circular polarization, and it occurs when the tip of the rotating electric vector traces a circle in space as it travels away from the observer. Two classifications of circular polarization are right-hand circular and left-hand circular.. In left-hand circular polarization, the electric vector rotates in a counterclockwise direction...

Key term(s)
  • left-hand circular polarisation

French

Domaine(s)
  • Électrotechnique
  • Télécommunications
DEF

Onde à polarisation elliptique ou circulaire dans laquelle le vecteur champ électrique, observé dans un plan fixe quelconque normal à la direction de propagation, tourne vers la gauche (sens antihoraire) dans le temps quand on regarde dans la direction de propagation.

OBS

Aujourd'hui, l'expression «polarisation circulaire gauche» est la plus employée.

Spanish

Campo(s) temático(s)
  • Electrotecnia
  • Telecomunicaciones
Save record 5

Record 6 2001-09-27

English

Subject field(s)
  • Electronic Warfare
Key term(s)
  • elliptical left-hand polarisation

French

Domaine(s)
  • Guerre électronique

Spanish

Save record 6

Record 7 1996-04-15

English

Subject field(s)
  • Advanced Technology Weapons
  • Electronic Circuits Technology
  • Lasers and Masers
CONT

In a two-mode gyro one of the two possible polarization modes is deliberately suppressed, but in a multi-oscillator gyro both polarizations are used to form a left-hand circularly polarized(LCP) mode and a right-hand circularly polarized(RCP) mode.

French

Domaine(s)
  • Armes de haute technicité
  • Technologie des circuits électroniques
  • Masers et lasers
CONT

Dans un gyro bimode, I'un des modes possibles de polarisation est délibérément supprimé alors que dans un gyro multioscillateur, on polarise les deux modes.

Spanish

Save record 7

Record 8 1996-04-15

English

Subject field(s)
  • Advanced Technology Weapons
  • Electronic Circuits Technology
  • Lasers and Masers
CONT

In a two-mode gyro one of the two possible polarization modes is deliberately suppressed, but in a multi-oscillator gyro both polarizations are used to form a left-hand circularly polarized(LCP) mode and a right-hand circularly polarized(RCP) mode.

French

Domaine(s)
  • Armes de haute technicité
  • Technologie des circuits électroniques
  • Masers et lasers
CONT

On a alors un mode polarisé circulairement à gauche (PCG) et un mode polarisé circulairement à droite (PCD).

Spanish

Save record 8

Record 9 1996-03-28

English

Subject field(s)
  • Advanced Technology Weapons
  • Electronic Circuits Technology
  • Lasers and Masers
CONT

In a two-mode gyro one of the two possible polarization modes is deliberately suppressed, but in a multi-oscillator gyro both polarizations are used to form a left-hand circularly polarized(LCP) mode and a right-hand circularly polarized(RCP) mode.

French

Domaine(s)
  • Armes de haute technicité
  • Technologie des circuits électroniques
  • Masers et lasers
CONT

On a alors un mode polarisé circulairement à gauche (PCG) et un mode polarisé circulairement à droite (PCD).

Spanish

Save record 9

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