Wideband structural antenna operating in the HF range, particularly for naval installations
First Claim
1. Antenna system for operation in the HF frequency range, comprising a linear radiating arrangement configured to be electrically coupled with a ground conductor and at least one electrical impedance device when in use, and whereinsaid linear radiating arrangement having a predominately vertical dimension and which is electrically coupled in use to a naval structure which has a predominantly vertical extension, is electrically conducting and which forms an active radiating element of the antenna system, said linear radiating arrangement comprising at least a fed conducing branch and at least one horizontal contacting branch which electrically connects the feed conducting branch to the navel structure as a ground return conducting element.
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Accused Products
Abstract
A structural antenna system for operation in the HF frequency range, particularly for naval communications, is described, comprising at least one linear radiating arrangement (14) adapted to be operatively associated with a ground conductor (GND) and at least one electrical impedance device (Z1-Z4), in which the aforesaid linear radiating arrangement (14) is coupled to a pre-existing naval structure which has a predominantly vertical extension and is electrically conducting, such as a funnel (F). A structural antenna system with multiple feed comprises a plurality of linear radiating arrangements (114) positioned in meridian planes of the naval structure of the funnel type (F), spaced at equal angular intervals.
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Citations
20 Claims
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1. Antenna system for operation in the HF frequency range, comprising a linear radiating arrangement configured to be electrically coupled with a ground conductor and at least one electrical impedance device when in use, and wherein
said linear radiating arrangement having a predominately vertical dimension and which is electrically coupled in use to a naval structure which has a predominantly vertical extension, is electrically conducting and which forms an active radiating element of the antenna system, said linear radiating arrangement comprising at least a fed conducing branch and at least one horizontal contacting branch which electrically connects the feed conducting branch to the navel structure as a ground return conducting element.
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6. Antenna system, for operation in the HF frequency range, comprising a linear radiating arrangement configured to be electrically coupled with a ground conductor and at least one electrical impedance device when in use, and wherein said linear radiating arrangement is electrically coupled in use to a naval structure which has a predominantly vertical extension, is electrically conducting and which forms a radiating element of the antenna system, and said linear arrangement includes:
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a plurality of wire radiating elements having a predominantly vertical extension, forming a first conducting branch configured to be electrically coupled to a radio frequency signal feed circuit; and a plurality of wire radiating elements having a predominantly horizontal extension, forming at least one transverse conducting branch, for connecting the first conducting branch adapted to be coupled to the feed circuit, to the said naval structure, said radiating elements being arranged in such a way as to form at least one closed path between the feed circuit and the ground conductor through said naval structure, and a plurality of electrical impedance devices interposed along the conducting branches and adapted to create selectively, according to the operating frequency, a plurality of different current paths along said conducting branches corresponding to a plurality of different electrical and/or geometrical configurations of the aforesaid radiating arrangement. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification