IP Library › Patent Application 13466222
Patent Application
App. No. 13/466,222

RFID TAG READER AND METHOD FOR READING AN RFID TAG

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Quick Facts
Patent No.
US None
App. No.
13/466,222
Abstract

An RFID reader and method for reading an RFID tag is provided herein. The RFID reader operates in a “bistatic” mode, utilizing two RF antennas, one for transmitting an RF signal, and one for receiving an RF signal. The transmit and receive antennas do not “point” in a same direction resulting in lobe patterns that will intersect at an angle.

Claims (26)

1 . An RFID reader comprising:

a transmit antenna transmitting and pointing in a first direction, and used to energize an RFID tag;

a receive antenna pointing in a second direction, and used to read transmissions from the energized RFID tag.

2 . The reader of claim 1 wherein the first direction and the second direction are orthogonal to each other.

3 . The reader of claim 1 wherein the RFID tag reflects power from the transmit antenna to the receive antenna.

4 . The reader of claim 1 wherein the transmit antenna is used exclusively to transmit signals, and the receive antenna is used exclusively to receive signals.

5 . The reader of claim 1 wherein the transmit antenna and the receive antenna are within a same housing.

6 . The reader of claim 1 wherein the RFID reader is a handheld RFID reader.

7 . The reader of claim 1 wherein the transmit antenna and the receive antenna have an angle between them that is unchanging over time.

8 . A method for operating an RFID reader, the method comprising the steps of:

the RFID reader using a transmit antenna transmitting and pointing in a first direction, and used to energize an RFID tag;

the RFID reader using an antenna pointing in a second direction to read transmissions from the energized RFID tag.

9 . The method of claim 8 wherein the first direction and the second direction are orthogonal to each other.

10 . The method of claim 8 wherein the RFID tag reflects power from the transmit antenna to the receive antenna.

11 . The method of claim 8 wherein the transmit antenna is used exclusively to transmit signals, and the receive antenna is used exclusively to receive signals.

12 . The method of claim 8 wherein the transmit antenna and the receive antenna are within a same housing.

13 . The method of claim 8 wherein the RFID reader is a handheld RFID reader.

14 . The method of claim 8 wherein the transmit antenna and the receive antenna have an angle between them that is unchanging over time.

15 . An RFID reader comprising:

a transmit antenna transmitting and pointing in a first direction, and used to energize an RFID tag;

a receive antenna pointing in a second direction, and used to read transmissions from the energized RFID tag;

wherein the RFID tag reflects power from the transmit antenna to the receive antenna;

wherein the transmit antenna is used exclusively to transmit signals, and the receive antenna is used exclusively to receive signals;

wherein the transmit antenna and the receive antenna are within a same housing;

wherein the RFID reader is a handheld RFID reader; and

wherein the transmit antenna and the receive antenna have an angle between them that is unchanging over time;

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 31, 2014
From: MOTOROLA SOLUTIONS, INC.
To: SYMBOL TECHNOLOGIES, INC.
Reel/Frame 034114/0592 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 31, 2012
From: BROER, DIRK A.
To: MOTOROLA SOLUTIONS, INC.
Reel/Frame 028297/0376 →