| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna device capable of communicating with a portable machine, even in the vicinity of a noise source. SOLUTION: A plurality of main antenna elements 4a to 4c for transmitting request signals, obtaining a response to the portable machine 10 for a user, are disposed in a compartment 2. A connecting section 14 as the noise source is fitted in the compartment 2. A jointing section between a hybrid battery 12 and a power cable 13 is used as the connecting section 14. Wire harnesses 7a to 7c are connected among the main antenna elements 4a to 4c and antenna drivers 9a to 9c. A branch wire harness 18 is connected to the wire harness 7c, connected to the main antenna element 4c farthest from the noise source 14. An auxiliary antenna element 16, connected to the branch wire harness 18, is disposed near the connecting section 14, and a communication region 17 is formed in a communication difficult region 6a. COPYRIGHT: (C)2008,JPO&INPIT
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