| 摘要 |
PROBLEM TO BE SOLVED: To provide a jig for frequency characteristic adjustment capable of adjusting frequency characteristics of a loop antenna having a three-dimensional shape.SOLUTION: The jig for frequency characteristic adjustment includes: first conductive members (3b and 4b) which are disposed in a part of a conductor that forms a loop antenna (1), along an outer circumference of a loop and coupled in an electromagnetic manner or connected electrically with the part of the conductor in the state where the jig for frequency characteristic adjustment is mounted in the loop antenna (1); second conductive members (3c and 4c) which are disposed in another part of the conductor along the outer circumference of the loop and coupled in an electromagnetic manner or connected electrically with the other part of the conductor; and third conductive members (3d, 3e, and 4g) which connect the first members and the second members via a path that is different from a path along the loop. A length of the first members and the second members along the loop becomes a length corresponding to frequency shift of the frequency characteristics of the loop antenna.SELECTED DRAWING: Figure 3 |
