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US 2006/0077104 A1Published application
Film antenna
AssigneeHitachi Cable, Ltd.
InventorsMakoto Usui, Yuuki Yamamoto, Ryo Sato
Life of this patent
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Abstract
A film antenna whose antenna characteristics are unaffected by chassis is provided. A recessed groove portion 26 is formed in a ground portion 13 which is attached to a chassis 18. A first radiating element portion 14 is formed from a wall 26a on one side of the groove portion 26 to a wall 26b on the other side. A capacitive coupling piece portion 27 which is capacitively coupled via a specified gap g to the first radiating element portion 14 is formed on the wall 26b on the other side to thereby allow antenna characteristics to be unaffected by the chassis 18.
Claims12
A film antenna, comprising:
- a radiating element portion for constituting a monopole antenna;
- a ground portion for being formed to cover a part or whole of said radiating element portion and attached to a chassis;
- and
- a capacitive coupling piece portion for being formed in said ground portion to be capacitively coupled to said radiating element portion.
1 more element
Dependencies are inferred from the claim text.