| 摘要 |
A helical antenna element is made by stamping a helical antenna base shape from a sheet of metal and pressing a plurality of sub-elements within the helical antenna base shape to form a helical antenna element. The helical antenna base shape includes the plurality of sub-elements, a plurality of joining pieces and at least one carrier strip. The helical antenna element may be further made by molding an insulating resin around the helical antenna element. Moreover, prior to molding the insulating resin, a ceramic cylinder may be inserted within the helical antenna element to insure the integrity of the semi-circularly pressed sub-elements. The carrier strip(s) are then removed from the joint pieces, producing the helical antenna.
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