Inductive power and data transmission system based on class D and amplitude shift keying
First Claim
Patent Images
1. An rf (radio frequency) signal transfer link comprising:
- a signal transfer link for using amplitude shift keying (ASK) to transfer rf data pulses, the link including a receiver circuit and a transmitter circuit, the transmitter circuit having an rf ON state and an rf OFF state, the transmitter circuit reducing the resonant circuit quality factor of the transmitter circuit during said rf OFF state, relative to the resonant circuit quality factor of the transmitter circuit during said rf ON state, thereby accelerating decay of rf amplitude at the receiver circuit during said rf Off state.
1 Assignment
0 Petitions
Accused Products
Abstract
A rf signal transfer link is described which uses amplitude shift keying (ASK) to transfer rf data pulses. The link minimizes state transition time at the end of each data pulse.
-
Citations
24 Claims
-
1. An rf (radio frequency) signal transfer link comprising:
a signal transfer link for using amplitude shift keying (ASK) to transfer rf data pulses, the link including a receiver circuit and a transmitter circuit, the transmitter circuit having an rf ON state and an rf OFF state, the transmitter circuit reducing the resonant circuit quality factor of the transmitter circuit during said rf OFF state, relative to the resonant circuit quality factor of the transmitter circuit during said rf ON state, thereby accelerating decay of rf amplitude at the receiver circuit during said rf Off state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
10. A transmitter circuit for an implanted electronic system, the circuit comprising:
an external transmitter circuit for transmitting amplitude shift keyed (ASK) rf (radio frequency) data pulses to an implanted receiver, the transmitter circuit having an rf ON state and an rf OFF state, the transmitter circuit reducing the resonant circuit quality factor of the transmitter circuit during said rf OFF state, relative to the resonant circuit quality factor of the transmitter circuit during said rf ON state, thereby accelerating decay of rf amplitude at the implanted receiver during said rf Off state. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
-
18. An rf (radio frequency) transfer link comprising:
a signal transfer link for using amplitude shift keying (ASK) to transfer rf data pulses from a transmitter to a receiver, the transmitter having an rf ON state and an rf OFF state, the link reducing the resonant circuit quality factor of the transmitter during said rf OFF state, relative to the resonant circuit quality factor of the transmitter circuit during said rf ON state, such that rf waveform decay at the receiver is accelerated and independent of coupling factor.
-
19. An rf (radio frequency) signal transfer link comprising:
a signal transfer link for using amplitude shift keying (ASK) to transfer rf data pulses, the link including; a series-tuned resonant transmitting circuit for transmitting the rf data pulses, the series-tuned resonant transmitter circuit having an rf ON state and an rf OFF state, the series-tuned resonant transmitting circuit including a damping resistor RD in series with a transmitter circuit inductance during said rf Off state, wherein the damping resistor RD is an open circuit with infinite resistance to minimize state transition times.
-
20. An rf (radio frequency) signal transfer link comprising:
a signal transfer link for using amplitude shift keying (ASK) to transfer rf data pulses, the link including; a series-tuned resonant transmitting circuit for transmitting the rf data pulses, the series-tuned resonant transmitter circuit having an rf ON state and an rf OFF state, the series-tuned resonant transmitting circuit including a damping resistor RD in series with a transmitter circuit inductance during said rf Off state, wherein the damping resistor RD has an optimal resistance to minimize receiver circuit state transition times.
-
21. An rf (radio frequency) signal transfer link comprising:
a signal transfer link for using amplitude shift keying (ASK) to transfer rf data pulses, the link including; a series-tuned resonant transmitting circuit for transmitting the rf data pulses, the series-tuned resonant transmitter circuit having an rf ON state and an rf OFF state, the series-tuned resonant transmitting circuit including a damping resistor RD in series with a transmitter circuit inductance during said rf Off state, wherein the damping resistor RD has a resistance which causes the resonant receiving circuit to behave such that rf waveform decay is independent of coupling factor so as to minimize state transition times.
-
22. A transmitter circuit for an implanted electronic system, the circuit comprising:
an external transmitter circuit for transmitting amplitude shift keyed (ASK) rf (radio frequency) data pulses to an implanted receiver, the transmitter circuit having an rf ON state and an rf OFF state, the transmitter circuit including; a series-tuned resonant transmitting circuit for transmitting the rf data pulses, the series-tuned resonant transmitting circuit including a damping resistor RD in series with a transmitter circuit inductance during said rf Off state, wherein the damping resistor RD is an open circuit with infinite resistance to minimize state transition times.
-
23. A transmitter circuit for an implanted electronic system, the circuit comprising:
-
an external transmitter circuit for transmitting amplitude shift keyed (ASK) rf (radio frequency) data pulses to an implanted receiver, the transmitter circuit having an rf ON state and an rf OFF state, the transmitter circuit including; a series-tuned resonant transmitting circuit for transmitting the rf data pulses, the series-tuned resonant transmitting circuit including a damping resistor RD in series with a transmitter circuit inductance during said rf Off state, wherein the damping resistor RD has an optimal resistance to minimize receiver circuit state transition times.
-
-
24. A transmitter circuit for an implanted electronic system, the circuit comprising:
an external transmitter circuit for transmitting amplitude shift keyed (ASK) rf (radio frequency) data pulses to an implanted receiver, the transmitter circuit having an rf ON state and an rf OFF state, the transmitter circuit including; a series-tuned resonant transmitting circuit for transmitting the rf data pulses, the series-tuned resonant transmitting circuit including a damping resistor RD in series with a transmitter circuit inductance during said rf Off state, wherein the damping resistor RD has a resistance which causes the resonant receiving circuit to behave such that rf waveform decay is independent of coupling factor so as to minimize state transition times.
Specification