A METHOD OF PROVIDING INCREASED LOW-ANGLE RADIATION SENSITIVITY IN AN ANTENNA AND AN ANTENNA HAVING SUCH A SENSITIVITY
An improved low-angle radiation antenna is obtained through excitation of a tangential electric field on the high-impedance surface, as well as leaky transverse-electric surface waves. Such fields and surface waves cannot normally occur on an ordinary metal surface. The tangential electric field on...
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Main Authors | , , , |
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Format | Patent |
Language | English French |
Published |
23.01.2003
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | An improved low-angle radiation antenna is obtained through excitation of a tangential electric field on the high-impedance surface, as well as leaky transverse-electric surface waves. Such fields and surface waves cannot normally occur on an ordinary metal surface. The tangential electric field on the high-impedance region excites a transverse-magnetic surface wave on a surrounding metal surface which gives improved low-angle radiation in the E-plane of an antenna disposed on the high impedance surface. Leaky transverse-electric surface waves provide improved radiation in the H-plane of the antenna.
L'invention concerne une antenne à rayonnement à angle faible amélioré obtenue par l'excitation d'un champ électrique tangentiel sur la surface à haute impédance ainsi que des ondes de surface électriques transversales à dispersion. Normalement, ces champs et ondes de surface ne peuvent pas apparaître sur une surface métallique ordinaire. Le champ électrique tangentiel sur la région à haute impédance excite une onde de surface magnétique transversale sur une surface métallique environnante, qui fournit un rayonnement à angle faible amélioré dans le plan E d'une antenne installée sur la surface à haute impédance. Des ondes de surface électriques transversales à dispersion fournissent un rayonnement amélioré dans le plan H de l'antenne. |
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Bibliography: | Application Number: WO2002US22008 |