RF tag and method of manufacturing the RF tag
AssigneeFujitsu Limited
InventorsTakashi Yamagajo, Toru Maniwa, Manabu Kai
Life of this patent
Estimating the term…
Abstract
An RF tag to accompany a conductive object is disclosed that includes an antenna and an integrated circuit connected to the antenna. The antenna includes a first radiating element, a second radiating element, a feeding part connected in series between the first and second radiating elements, and an impedance control part connected parallel to the feeding part. The antenna has an effective length shorter than half of a wavelength used in communication.
Claims14
An RF tag to accompany a conductive object, comprising:
- an antenna;
- and
- an integrated circuit connected to the antenna,
- wherein the antenna includes
- a first radiating element;
- a second radiating element;
- a feeding part connected in series between the first and second radiating elements;
- and
- an impedance control part connected parallel to the feeding part, and
- wherein the antenna has an effective length shorter than a half of a wavelength used in a communication.
A method of manufacturing an RF tag to accompany a conductive object, the RF tag having an integrated circuit connected to an antenna, the method comprising:
- a first step of forming the antenna of a predetermined shape on one surface of a first insulating layer;
- and
- a second step of joining a second insulating layer to another surface of the first insulating layer,
- wherein the antenna is formed so as to have a first radiating element, a second radiating element, a feeding part connected in series between the first and second radiating elements, and an impedance control part connected parallel to the feeding part and to have an effective length shorter than a half of a wavelength used in a communication.
Dependencies are inferred from the claim text.