07397364 is referenced by 310 patents and cites 23 patents.

A method is provided for tracking an object, including positioning a radio frequency (RF) driver to radiate an RF driving field toward the object, and fixing to the object a wireless transponder that includes a power coil and at least one sensor coil. The method also includes receiving the RF driving field using the power coil and storing electrical energy derived therefrom. A plurality of field generators are driven to generate electromagnetic fields at respective frequencies in a vicinity of the object that induce a voltage drop across the at least one sensor coil. A digital output signal is generated at the wireless transponder indicative of the voltage drop across the sensor coil, and the generation of the digital output signal is powered using the stored electrical energy. The digital output signal is transmitted from the wireless transponder using the power coil, and the transmission of the digital output signal is powered using the stored electrical energy. The digital output signal is received and processed to determine coordinates of the object.

Title
Digital wireless position sensor
Application Number
10/706298
Publication Number
7397364 (B2)
Application Date
November 11, 2003
Publication Date
July 8, 2008
Inventor
Assaf Govari
Haifa
IL
Agent
Ladas and Parry
Assignee
Biosense Webster
CA, US
IPC
G08B 21/00
A61B 6/00
A61B 5/05
A61B 19/00
H04Q 7/00
G08B 1/08
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