Bernard Barink

US Patent:

7209040, Apr 24, 2007

Filed:

Nov 19, 2004

Appl. No.:

10/993316

Inventors:

Bernard Barink - McKinney TX, US
Loek J. d'Hont - Rotonda-West FL, US

Assignee:

Sirit Technologies, Inc. - Mississauga, Ontario

International Classification:

G08B 13/14
H04Q 5/22

US Classification:

3405722, 340 101, 342 42

Abstract:

An RFID circuit comprising an RF carrier signal source, a hybrid coupled to the RF carrier signal source operable to generate first and second phase-shifted RF carrier signals, first and second mixers coupled to the hybrid each operable to multiply a respective one of the first and second carrier signals and a received backscattered modulated carrier signal and generate first and second baseband signals, respectively, and first logic coupled to the first and second mixers operable to select one of the first and second baseband signals having a larger amplitude as a demodulated RFID output signal.

US Patent:

7366465, Apr 29, 2008

Filed:

Nov 19, 2004

Appl. No.:

10/992958

Inventors:

Bernard Barink - McKinney TX, US
Loek J. d'Hont - Rotonda-West FL, US

Assignee:

Sirit Technologies Inc. - Toronto, Ontario

International Classification:

H04B 7/00
G08B 13/14

US Classification:

455 411, 455 412, 3405721

Abstract:

An RFID circuit comprises an RF carrier signal source, and a hybrid coupled thereto operable to generate first, second and third phase-shifted RF carrier signals. The circuit further comprises first, second, and third mixers coupled to the hybrid each operable to multiply one of the first, second and third respective carrier signals and a backscattered modulated carrier signal and generate first, second and third baseband signals, respectively. The circuit further comprises first, second, and third delay lines respectively coupled to the first, second, and third mixers and operable to generate first, second and third delayed baseband signals. The circuit further comprises logic coupled to the first, second, and third mixers and the first, second, and third delay lines and operable to detect substantially simultaneous data transitions in at least two of the first, second, and third baseband signals, and generating a reconstructed signal having a data transition in response thereto.

US Patent:

7535360, May 19, 2009

Filed:

Apr 24, 2007

Appl. No.:

11/739584

Inventors:

Bernard Barink - McKinney TX, US
Loek J. d'Hont - Rotonda-West FL, US

Assignee:

Sirit Technologies Inc. - Toronto, Ontario

International Classification:

G08B 13/14

US Classification:

3405722, 340 101, 342 42

Abstract:

An RFID circuit comprises an RF carrier signal source, a hybrid coupled to the RF carrier signal source operable to generate an in-phase and a quadrature phase component of the RF carrier signal, a switch coupled to the hybrid operable to pass one of the in-phase and quadrature phase components of the RF carrier signal to its output, and a mixer coupled to the output of the switch operable to multiply one of the in-phase and quadrature phase component of the carrier signal and a received modulated carrier signal and generate a baseband signal.

US Patent:

7546137, Jun 9, 2009

Filed:

Feb 27, 2006

Appl. No.:

11/362622

Inventors:

Loek J. D'Hont - Rotonda-West FL, US
Bernard Barink - McKinney TX, US

Assignee:

Sirit Technologies Inc.

International Classification:

H04B 7/00

US Classification:

455522, 4551142, 4551143, 4551151, 4551271, 375296, 375254, 370282

Abstract:

A method for use in a RFID reader, the method comprising providing an output signal from an amplifier of a transmitter, attenuating the output signal via a step attenuator, detecting and comparing the attenuated output signal to a reference value, and adjusting power to the amplifier until the attenuated output signal is substantially equal to the reference value. The attenuated output signal drives a local oscillator signal of a receiver thereby canceling noise generated by the transmitter in the receiver.

US Patent:

20060109127, May 25, 2006

Filed:

Nov 19, 2004

Appl. No.:

10/992966

Inventors:

Bernard Barink - McKinney TX, US
Gregory Havlicek - North Richland Hills TX, US
Gary Bishop - Kegworth, GB
Loek d'Hont - Rotonda-West FL, US

International Classification:

G08B 13/14

US Classification:

340572200

Abstract:

An RFID circuit comprises an RF carrier signal source, a hybrid coupled to the RF carrier signal source operable to generate an in-phase and a quadrature phase component of the RF carrier signal, a switch coupled to the hybrid operable to pass one of the in-phase and quadrature phase components of the RF carrier signal to its output, and a mixer coupled to the output of the switch operable to multiply one of the in-phase and quadrature phase component of the carrier signal and a received modulated carrier signal and generate a baseband signal.

US Patent:

20060220962, Oct 5, 2006

Filed:

Feb 27, 2006

Appl. No.:

11/362951

Inventors:

Loek d'Hont - Rotonda- West FL, US
Bernard Barink - McKinney TX, US
Dave Schneider - Flower Mound TX, US

International Classification:

H01Q 1/38

US Classification:

3437000MS

Abstract:

An antenna comprises a square patch element having first and second feed points and lying in a first plane, the first feed point being disposed near a first edge of the square patch element and substantially bisecting the first edge, and the second feed point being disposed near a second edge of the square patch element and substantially bisecting the second edge. The antenna further comprises a feed structure lying in a second plane parallel with the first plane and having a first segment coupled between a signal point and the first feed point, and a second segment coupled between the signal point and the second feed point, where the first and second segments of the feed structure have unequal lengths. The antenna further comprises a ground plane supporting the feed structure and square patch element.

US Patent:

20070066224, Mar 22, 2007

Filed:

Feb 27, 2006

Appl. No.:

11/362984

Inventors:

Loek d'Hont - Rotonda-West FL, US
Bernard Barink - McKinney TX, US

Assignee:

Sirit, Inc. - Rotonda West FL

International Classification:

H04B 7/00

US Classification:

455041200, 342042000, 340010300

Abstract:

An RFID reader, comprising a high-efficiency Class-C power amplifier having an input, an output, and a supply voltage, a modulator coupled to the supply voltage of the Class-C power amplifier, and an RF carrier signal coupled to the input of the Class-C power amplifier. The modulator changes the supply voltage of the Class-C power amplifier resulting in highly controlled amplitude modulation of the RF carrier signal at the output of the Class-C power amplifier.

US Patent:

20090201169, Aug 13, 2009

Filed:

Feb 6, 2009

Appl. No.:

12/367298

Inventors:

Loek d'Hont - Port Charlotte FL, US
Swanson Rick - Plano TX, US
Bernard Barink - McKinney TX, US
Alastair Malarky - Petersburg, CA
Japjeev Kohli - Waterloo, CA
Richard Turnock - Toronto, CA

Assignee:

MARK IV INDUSTRIES CORP. - Mississauga

International Classification:

G08B 5/22

US Classification:

34082549

Abstract:

A real-time location system for identifying and locating tagged items. The system may include an identification protocol that tracks in-network transponders and assigns dynamic in-network identification numbers to in-network transponders. The system includes a locator function that employs time-of-arrival analysis. Rather than attempt to synchronize the time base at each reader, the system and process eliminate the need to sync the readers and also eliminate the impact of differential receive delays in the respective readers. Both the transponder and a master reader transmit locate signals, which are measured at slave readers. The system relies on differences in time-of-arrival of the two signals at the respective slave readers to determine the likely location of the transponder.