Transcript
US 2007017 1 073Al
(19) United States (12) Patent Application Publication (10) Pub. No.: US 2007/0171073 A1 (43) Pub. Date:
Ariyoshi et al. (54)
REPEATERS FOR RFID SYSTEMS
Publication Classi?cation
(75) Inventors: Tomonori Ariyoshi,Ayabe-shi (JP);
(51)
Koyo Ozaki, Ayabe-shi (JP) Correspondence Address: BEYER WEAVER LLP PO. BOX 70250
(52)
OAKLAND, CA 94612-0250 (US)
(57)
(73) Assignee: OMRON Corporation, Kyoto-shi (JP) (21) Appl. No.:
11/643,017
(22) Filed:
Dec. 19, 2006
(30)
Jul. 26, 2007
Int. Cl. G08B 13/14 G08B 1/00 G08B 1/08
(2006.01) (2006.01) (2006.01)
US. Cl. .................. ..340/572.7;340/539.1;340/531
ABSTRACT
In one embodiment, a repeater relays an RF signal between
an RFID (radio frequency identi?cation) transponder having a transponder antenna, and an RFID reader having a reader antenna. The repeater includes a ?rst antenna con?gured to be coupled With the reader antenna; a second antenna
Foreign Application Priority Data
con?gured to be coupled With the transponder antenna; and a ?rst coaxial cable Which is coupled to the ?rst and second
Dec. 22, 2005
(JP) .................................... .. 2005-370557
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