H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
H01Q 11/12 (2006.01) H01Q 11/08 (2006.01)
Patent
CA 2229181
An electrically small antenna is disclosed that is constructed from a generalized contrawound toroidal helix (1, 2) made from a single continuous conductor divided into two length portions each of which are substantially the same length and which have a generalized helical pattern. The helical pitch senses the two length portions are opposite to one another. The two length portions are insulated from one another and overlap one another on the surface of a generalized toroid. A signal is fed to the antenna at a port defined by the node locations (N1, N2) where the respective length portions join one another, or at a diametrically opposite point. A compact, broadband embodiment of the antenna is disclosed, as are other applications including a coaxial cavity resonator using the antenna as a feed element.
La présente invention concerne une petite antenne électrique construite de façon à former une spirale toroïdale contre-spiralée (1, 2) faite d'un unique conducteur divisé en deux segments présentant sensiblement la même longueur et une configuration générale en spirale. Les pas de spiralage des deux segments sont de sens opposés. Les deux segments, qui sont isolés l'un de l'autre, se chevauchent sur la surface de la configuration toroïdale générale. Un signal est fourni à l'antenne par un port défini par les positions nodales (N1, N2) où les différents segments se rejoignent, ou en un point diamétralement opposé. L'invention concerne également une réalisation d'antenne large bande, ainsi que d'autres applications, et notamment une cavité résonnante de coaxial utilisant l'antenne comme élément d'alimentation.
Macrae & Co.
Vortekx P.c.
West Virginia University
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