Invention Grant
- Patent Title: Far-field RF power extraction circuits and systems
- Patent Title (中): 远场RF功率提取电路和系统
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Application No.: US10944676Application Date: 2004-09-17
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Publication No.: US07167090B1Publication Date: 2007-01-23
- Inventor: Soumyajit Mandal , Rahul Sarpeshkar
- Applicant: Soumyajit Mandal , Rahul Sarpeshkar
- Applicant Address: US MA Cambridge
- Assignee: Massachusetts Institute of Technology
- Current Assignee: Massachusetts Institute of Technology
- Current Assignee Address: US MA Cambridge
- Agency: Daly, Crowley, Mofford, & Durkee, LLP
- Main IPC: G08B1/08
- IPC: G08B1/08

Abstract:
A method and apparatus for performing far-field power extraction are presented. The method includes receiving an electromagnetic radiation signal, rectifying the signal to produce a direct current (D.C.) voltage and providing the D.C. voltage to a circuit. A far-field power extraction circuit includes an antenna for receiving an electromagnetic radiation signal, a rectifier for rectifying the electromagnetic radiation signal. The circuit may further include a charge pump for amplifying the rectified voltage, an impedance matching network for coupling the antenna to the rectifier and a feedback tuning circuit for optimizing performance of the extraction circuit.
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