Wireless IC device
First Claim
1. A wireless IC device comprising:
- a high-frequency device defined by an electromagnetically coupled module or a wireless IC chip, the electromagnetically coupled module including the wireless IC chip and a feed circuit board coupled to an external circuit and electrically connected to or electromagnetically coupled to the wireless IC chip;
a loop electrode coupled to the high-frequency device;
an insulation sheet on which the high-frequency device and the loop electrode are arranged; and
a radiation electrode coupled to the loop electrode, said radiation electrode defining a radiator;
whereinthe insulation sheet has a plane bonded to a plane of the radiation electrode by being separated into different directions at one end such that a loop plane of the loop electrode is perpendicular or inclined relative to the plane of the radiation electrode by being bonded to the plane of the radiation electrode; and
the loop electrode is provided near inside an area of the radiation electrode.
1 Assignment
0 Petitions
Accused Products
Abstract
A wireless-IC-device main component is disposed on a surface opposite to a surface for receiving signals from a reader/writer. The wireless-IC-device main component includes an insulating substrate, which is provided with a loop electrode and an electromagnetically coupled module coupled to the loop electrode. A signal from the reader/writer causes an eddy current to flow across a conductor principal plane of a metal article. The eddy current causes a magnetic field to be generated in a direction perpendicular or substantially perpendicular to the conductor principal plane of the metal article. Then, the loop electrode is coupled to the magnetic field. Thus, the wireless-IC-device main component functions as an RFID tag even for signals from the principal plane opposite to the wireless-IC-device main component. Thus, it is possible to reduce the cost of manufacturing a metal article, and to provide a wireless IC device using the metal article as a radiator.
140 Citations
13 Claims
-
1. A wireless IC device comprising:
-
a high-frequency device defined by an electromagnetically coupled module or a wireless IC chip, the electromagnetically coupled module including the wireless IC chip and a feed circuit board coupled to an external circuit and electrically connected to or electromagnetically coupled to the wireless IC chip; a loop electrode coupled to the high-frequency device; an insulation sheet on which the high-frequency device and the loop electrode are arranged; and a radiation electrode coupled to the loop electrode, said radiation electrode defining a radiator;
whereinthe insulation sheet has a plane bonded to a plane of the radiation electrode by being separated into different directions at one end such that a loop plane of the loop electrode is perpendicular or inclined relative to the plane of the radiation electrode by being bonded to the plane of the radiation electrode; and the loop electrode is provided near inside an area of the radiation electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
Specification