Method and antenna for providing an omnidirectional pattern

Details Method and antenna for providing an omnidirectional pattern Method and antenna for providing an omnidirectional pattern

H - Electricity

01

Q

H01Q 11/12 (2006.01) H01Q 21/00 (2006.01) H01Q 21/29 (2006.01)

Patent

CA 2198111

The present invention provides a method (400) and antenna (100) for providing an omnidirectional pattern. The antenna (100) is smaller than prior art omnidirectional antennas with the same bandwidth. The smaller size is made possible by the use of at least one capacitive element (104) at a discontinuity in the loop (102). The pattern is balanced and therefore the omnidirectionality is maintained by the current maximum (110 and 112) that are created by the capacitive element (104).

L'invention porte sur un procédé (400) et une antenne (100) produisant un diagramme de rayonnement omnidirectionnel. L'antenne (100) est plus petite que les antennes omnidirectionnelles antérieures de même largeur de bande. Cette réduction de taille est rendue possible par l'utilisation d'au moins un élément capacitif (104) placé dans une discontinuité de la boucle (102). Le diagramme étant équilibré, la capacité omnidirectionnelle est maintenue par les maxima de courant (110, 112) créés par les éléments capacitifs (104).

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