ANTENNA USING ANTENNA ELEMENT FORMED WITH HELICAL COIL AND FABRICATING METHOD THEREOF

摘要

PURPOSE: An antenna using an antenna element formed with a helical coil and a fabricating method thereof are provided to prevent a variation of thickness of resin coating layer by improving a fabrication method. CONSTITUTION: An antenna includes an antenna element, a first resin member, and a second resin member. The antenna element and the first resin member(12) are formed with one body. The first resin member includes a plurality of protrusions. The protrusions(12a) are formed on an outer circumference of the first resin member and arranged in a fixed interval relatively to a circumferential direction of the first resin member. The first resin member further includes a tip end part having a cross-sectional shape. The second resin member(16) is coated on the first resin member. The second resin member has a thickness which is substantially identical with height of each of the protrusions.