| 摘要 |
PROBLEM TO BE SOLVED: To resonate in a plurality of bands in a wide frequency bands of 700-2800 MHz and 400-2600 MHz.SOLUTION: A first feed element 10 includes a linear section 10a and a loop section 10b of a rectangular loop shape disposed on the top end of the linear section 10a, and is erected on the ground. To the linear section 10a, one end of an L-shaped second feed element 11 is connected. A first ground element 12 is disposed adjacent to the first feed element 10 substantially in parallel thereto, and a second ground element 13 is disposed to face the first ground element. Each one end of the first ground element 12 and the second ground element 13 is connected to the ground. When letting the resonant frequency of the first feed element 10 to be a first frequency, each resonant frequency of the second feed element 11, the first ground element 12 and the second ground element 13 is set to be higher than the first frequency and mutually different. |
