Wireless tag, its manufacturing and its layout

• US 20030169204A1
• Filed: 03/14/2003
• Published: 09/11/2003
• Est. Priority Date: 05/24/1999
• Status: Active Grant

• Current Assignee: Takeshi Saito
• Original Assignee: Takeshi Saito
• Inventors: Saito, Takeshi
• Granted Patent: US 6,795,025 B2
• Time in Patent Office: Days
• US Class Current: 343/700MS
• CPC Class Codes: G01V 15/00 Tags attached to, or associated with, an object, in order to enable detection of the object record carriers for use with machines having a detectable tag or marker G06K19/00
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• CPC Class Codes: G06K 19/07786 the antenna being of the HF type, such as a dipole
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/01068 Erbium [Er]
• CPC Class Codes: H01L 2924/12032 Schottky diode
• CPC Class Codes: H01L 2924/12041 LED
• CPC Class Codes: H01L 2924/19041 being a capacitor
• CPC Class Codes: H01L 2924/30107 Inductance
• CPC Class Codes: H01L 2924/3011 Impedance

Abstract

To provide a wireless tag having a wide band, a microstrip-line of a half wavelength type is used and an IC is built in between an antenna and a ground conductor, and a middle point of the antenna and the ground conductor are connected.

Claims

1. A wireless tag comprising:

an antenna;

a transmitter and receiver including a rectenna circuit;

a CMOS logic circuit;

a memory circuit; and

an LED for emitting light by power generated by the rectenna circuit.

2. A wireless tag according to claim 1:

wherein the LED emits light by power via the CMOS logic circuit.

3. A wireless tag according to claim 1:

wherein the transmitter and receiver, the CMOS logic circuit and the memory circuit are constituted by a single chip of IC.

4. A wireless tag according to claim 1:

wherein light emission of the LED is arranged at a position capable of being confirmed on a side of the antenna.

5. A wireless tag according to claim 4:

wherein light emission of the LED can be confirmed via a hole provided through the antenna.