Patent ID: 9614284
Date: 2017-04-04
CPC Classifications: H01Q

Claim:
1. A frequency characteristic adjusting jig to be attached to a loop antenna including a conductor that is formed in the shape of a loop such that a width measured in a direction perpendicular to a plane of the loop is larger than a width measured in the plane of the loop and that includes a feed point formed in a portion of the loop, the frequency characteristic adjusting jig comprising: a conductive first member which, when the frequency characteristic adjusting jig is attached to the loop antenna, is located along an outer periphery of the loop for a portion of the conductor and is electromagnetically coupled or electrically connected to the portion of the conductor; a conductive second member which, when the frequency characteristic adjusting jig is attached to the loop antenna, is located along the outer periphery of the loop for another portion of the conductor and is electromagnetically coupled or electrically connected to the other portion of the conductor; and a conductive third member which connects the first and second members together via a different path than a path formed along the loop, wherein the first and second members are chosen to have a length along the loop such that a frequency characteristic of the loop antenna is shifted according to the length.