| 摘要 |
<p>This antenna device comprises: a first wireless circuit (2) for operating at a first frequency (f1); a first power feed unit (3) connected to the first wireless circuit (2); a first matching circuit section (4) connected to the first power feed unit (3); a first antenna element (5) having power fed from the first power feed unit (3), and having a first element (51) with an electrical length of lambda/4 at a second frequency (f2) and a second element (52) with an electrical length of 3lambda/4 at a third frequency (f3); a second wireless circuit (6) for operating at the first frequency (f1); a second power feed unit (7) connected to the second wireless circuit (6); a second matching circuit section (8) connected to the second power feed unit (7); and a second antenna element (9) having power fed from the second power feed unit (7), and having a third element (91) with an electrical length of lambda/4 at a fourth frequency (f4) and a fourth element (92) with an electrical length of 3lambda/4 at a fifth frequency (f5), wherein f3 < f1 < f2, and f5 < f1 < f4.</p> |
