Dual polarized array antenna with central polarization control

Details Dual polarized array antenna with central polarization control Dual polarized array antenna with central polarization control

H - Electricity

01

Q

H01Q 21/24 (2006.01) H01Q 1/24 (2006.01) H01Q 9/26 (2006.01) H01Q 21/08 (2006.01) H01Q 21/20 (2006.01) H01Q 21/26 (2006.01)

Patent

CA 2240182

A planar array antenna (12) having radiating elements characterized by dual simultaneous polarization states and having substantially rotationally symmetric radiation patterns. A distribution network (16), which is connected to each dual polarized radiator, communicates the electromagnetic signals from and to each radiating element. A ground plane (14) is positioned generally parallel to and spaced apart from the radiating elements by a predetermined distance. The conductive surface of the ground plane operates to image the radiating elements over a wide coverage area, thereby enabling a radiation pattern within an azimuth plane of the antenna to be independent of any quantity of radiating elements. A central polarization control (18) network (PCN), which is connected to the distribution network (16), can control the polarization states of the received signals distributed via the distribution network by the radiating elements.

Antenne (12) réseau plan dotée d'éléments rayonnants caractérisés par des états de polarisation simultanés doubles et dotée de diagrammes de rayonnement pratiquement symétriques en rotation. Un réseau (16) de distribution qui est connecté à chaque radiateur à polarisation double communique les signaux électromagnétiques vers chaque élément rayonnant et en provenance de ce dernier. Un plan de sol (14) est placé de manière généralement parallèle aux éléments rayonnants et éloigné de ces derniers d'une distance prédéterminée. La surface conductrice du plan de sol fonctionne de manière à représenter l'image des éléments rayonnants sur une large zone de couverture, permettant ainsi à un diagramme de rayonnement dans un plan azimutal de l'antenne d'être indépendant de toute quantité d'éléments rayonnants. Un réseau (PCN) de commande (18) centrale de polarisation qui est connecté au réseau de distribution (16) peut commander les états de polarisation des signaux reçus distribués via le réseau de distribution par les éléments rayonnants.

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