| 摘要 |
PROBLEM TO BE SOLVED: To narrow an interval between elements of a folded-type antenna element to contribute to miniaturization and space saving of a wireless apparatus, and to maintain impedance characteristics of an antenna. SOLUTION: An antenna apparatus 10 has a folded line from a first feeding point 11 to a first short circuit point 13 via a first folding point 12 as an antenna element. A section from the first feeding point 11 to the first folding point 12 is defined as a first partial element 15. A section from the first folding point 12 to the first short circuit part 13 is defined as a second partial element 16. The first feeding point 11 is connected to a feeding circuit 81 represented by a symbol on a circuit substrate 8 via a feeding pin 17, for example. The first short circuit point 13 is connected to a ground circuit 82 represented by a symbol on the circuit substrate 8 via a short circuit pin 18, for example. An average interval between the first partial element 15 and the second partial element 16 is narrowed to 1/1,000 of an resonance frequency. COPYRIGHT: (C)2011,JPO&INPIT
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