Composite antenna apparatus
AssigneeMitsumi Electric Co., Ltd.
InventorsIsao Fukae, Masaaki Miyata
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Abstract
A composite antenna apparatus includes a cylindrical member 4 formed by a flexible insulating film rolled into a cylindrical shape, a plurality of antenna patterns 3 formed in a helix pattern on a peripheral surface of the cylindrical member 4, a circuit board 2 fixed to one axial end of the cylindrical member 4 and having a circuit pattern 10 connected to the antenna patterns 3 by soldering, and a monopole antenna 1 disposed inside the cylindrical member 4 and standing up on one surface of the circuit board 2. The circuit board 2 is provided with a first metallic pattern 8 having a predetermined area and formed on the one surface of the circuit board 2 at a position inside the cylindrical member 4.
Claims2
A composite antenna apparatus comprising a cylindrical member formed by a flexible insulating member rolled into a cylindrical shape, a circuit board fixed to one axial end of the cylindrical member and provided with a first metallic pattern, and a monopole antenna disposed inside the cylindrical member and standing up on one surface of the circuit board, wherein:
- the circuit board has a second metallic pattern formed on the other surface thereof, the monopole antenna having a coil portion wound in a spiral fashion.
Dependencies are inferred from the claim text.