| 摘要 |
PROBLEM TO BE SOLVED: To provide a high surface impedance structure which contributes to the thickness reduction of an antenna unit and an RFID tag. SOLUTION: A capacity upper electrode 21 is formed on the top surface side of a dielectric layer 10. A ground electrode 31 in a rectangular frame shape, a center electrode 32 disposed in the center of the reverse surface, a capacity lower electrode 33 connected to the center electrode and disposed opposite the capacity upper electrode 21, an inductance portion 34 connecting the center electrode 32 and ground electrode 31 to each other, are formed on the reverse surface side of the dielectric layer 10. The inductance part 34 is in a meander shape and increased in inductance. COPYRIGHT: (C)2008,JPO&INPIT |
