| 摘要 |
An antenna includes a first radiating element ( 2 a), a second radiating element ( 2 b), a third radiating element ( 2 c), a first switch element ( 7 - 1 ) for switching an electrical connection between the first radiating element ( 2 a) and the second radiating element ( 2 b), a second switch element ( 7 - 2 ) for switching an electrical connection between the second radiating element ( 2 b) and the third radiating element ( 2 c). The first radiating element ( 2 a), the second radiating element ( 2 b) and the third radiating element ( 2 c) are conductor patterns formed on a dielectric member ( 1 ) that is separate from a printed circuit board ( 4 ) and has a dielectric constant larger than that of the printed circuit board ( 4 ).
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