METHOD AND SYSTEM FOR A RFID TRANSPONDER WITH CONFIGURABLE FEED POINT FOR RFID COMMUNICATIONS
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Accused Products
Abstract
A Method and system for a RFID transponder with configurable feed point for RFID communications is provided. In this regard, an RFID transponder may receive RF signals via a leaky wave antenna and modulate an amplitude of a backscattered signal associated with the received RF signals by switching between a plurality of feed points of the leaky wave antenna to vary an input impedance of said RFID transponder. Each of the plurality of feed points may be located in a different position in the resonant cavity of the leaky wave antenna. The input impedance may be controlled by switching a load in and out of a receive path of the RFID transponder. The leaky wave antenna may be integrated within and/or on an integrated circuit, an integrated circuit package, or a combination thereof.
5 Citations
36 Claims
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1-20. -20. (canceled)
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21. A leaky wave antenna, comprising:
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a reflective surface configured to reflect electromagnetic energy corresponding to a signal; a partially reflective surface configured to reflect less than all of the electromagnetic energy corresponding to the signal, the partially reflective surface being spaced apart from the reflective surface to form a cavity therebetween; a plurality of feed points configured to inject signals into the cavity, the signal being injected into the cavity by one of the plurality of feed points based upon an input impedance of the leaky wave antenna, wherein the input impedance of the leaky wave antenna is set by a position of the one of the plurality feed points that injects the signal relative to the reflective surface and the partially reflective surface. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification