Patent ID: 9547817
Date: 2017-01-17
CPC Classifications: G06K,H01Q

Claim:
1. An RF tag comprising: an inlay entirely sealed with an insulating member and comprising: a planar auxiliary antenna laminated on the inlay in an insulating state to the inlay; and a substrate on which the inlay and the auxiliary antenna are laminated, wherein the auxiliary antenna has a rectangular planar shape, wherein long sides of the auxiliary antenna each have a length of substantially ¼ of a wavelength of a radio wave frequency of the inlay, the auxiliary antenna has a cutout part that divides one of the long sides of the auxiliary antenna into two parts each having a length of substantially ⅛ of the wavelength of the radio wave frequency of the inlay, the cutout part has a concave shape opened in an edge portion of the one of the long sides of the auxiliary antenna and has a width side and two depth sides, wherein the IC chip of the inlay is disposed in the cutout part, the width side of the cutout part is entirely overlapped with a width side of the loop portion, and the auxiliary antenna is directly laminated on a surface of the inlay and electrically connected to the inlay by capacitor coupling.