RFID interrogator
First Claim
Patent Images
1. A RFID tag interrogator comprising a transmitter, the transmitter comprising:
- a resonant circuit; and
a driver coupled to drive said resonant circuit, wherein said resonant circuit includes a resonance regeneration system such that during amplitude modulation of a resonant signal in said resonant circuit, (a) when an amplitude of said resonant signal is reduced, energy from said reduction is stored, and (b) when said amplitude is increased, said stored energy is used to regenerate said resonant signal.
1 Assignment
0 Petitions
Accused Products
Abstract
Embodiments of the invention relate to the field of RFID interrogators, particularly RFID interrogators that combine low loss with high rates of communication from the interrogator to a tag. We describe a transmitter comprising a resonant circuit and a driver coupled to drive said resonant circuit, wherein said resonant circuit includes a resonance regeneration system such that during amplitude modulation of a resonant signal in said resonant circuit when an amplitude of said resonant signal is reduced energy from said reduction is stored and when said amplitude is increased said stored energy is used to regenerate said resonance signal.
28 Citations
12 Claims
-
1. A RFID tag interrogator comprising a transmitter, the transmitter comprising:
-
a resonant circuit; and a driver coupled to drive said resonant circuit, wherein said resonant circuit includes a resonance regeneration system such that during amplitude modulation of a resonant signal in said resonant circuit, (a) when an amplitude of said resonant signal is reduced, energy from said reduction is stored, and (b) when said amplitude is increased, said stored energy is used to regenerate said resonant signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
Specification