METHOD AND MONOPOLE ANTENNA FOR MAKING UNIFORM THE RADIATION OF SAID ANTENNA, WHEN DISPOSED INSIDE A RADOME
First Claim
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1. A method for ensuring a uniform radiation pattern of an assembly comprising:
- a monopole antenna, anda radome with an aerodynamic profile, inside which said monopole antenna is positioned,wherein the method comprises;
determining the radiation pattern of said antenna/radome assembly;
determining the directions, about the axis of said monopole antenna positioned inside said radome, in which said radiation pattern of the antenna/radome assembly has areas in which the gain values are reduced in comparison with the radiation pattern of said monopole antenna; and
modifying the surface of said monopole antenna, to form on it a protruding longitudinal ridge that is at least approximately facing at least one of said areas of reduced gain thus determined.
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Abstract
Method and monopole antenna for making uniform the radiation of the antenna, when disposed inside a radome. According to the invention, on the surface of the monopole antenna is formed a protruding longitudinal ridge which is disposed at least approximately opposite an area of the radiating pattern of the assembly radome (1)-monopole antenna having a reduced gain in comparison with the radiating pattern of said monopole antenna alone.
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Citations
12 Claims
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1. A method for ensuring a uniform radiation pattern of an assembly comprising:
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a monopole antenna, and a radome with an aerodynamic profile, inside which said monopole antenna is positioned, wherein the method comprises; determining the radiation pattern of said antenna/radome assembly; determining the directions, about the axis of said monopole antenna positioned inside said radome, in which said radiation pattern of the antenna/radome assembly has areas in which the gain values are reduced in comparison with the radiation pattern of said monopole antenna; and modifying the surface of said monopole antenna, to form on it a protruding longitudinal ridge that is at least approximately facing at least one of said areas of reduced gain thus determined.
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2. An assembly comprising:
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a monopole antenna having a surface of revolution, and a radome with an aerodynamic profile, inside which said monopole antenna is positioned, wherein said monopole antenna comprises, on its surface of revolution, at least one protruding longitudinal ridge positioned at least approximately facing at least one of said areas of reduced gain. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A monopole antenna having a surface of revolution and intended to be positioned inside a radome with an aerodynamic profile, so as to form an antenna/radome assembly, the radiation pattern of said assembly having areas in which the gain values are reduced in comparison with the radiation pattern of said monopole antenna, characterised in that said monopole antenna comprises, on its surface of revolution, at least one protruding longitudinal ridge intended to face at least approximately at least one of said areas of reduced gain of said antenna is positioned inside said radome.
Specification