Integrated circuit with electromagnetic communication
First Claim
1. A system comprising:
- a first transducer configured to convert electromagnetic signals into electrical signals; and
a first integrated circuit (IC) operatively coupled to the first transducer, the IC including;
a receiver circuit for receiving from the first transducer a first radio-frequency electrical signal and transforming the first radio-frequency electrical signal into a first baseband signal, and outputting the first baseband signal when a control signal has a first state and not when the control signal has a second state different than the first state; and
a signal-detector circuit generating a monitor signal representative of a strength of the received first radio-frequency electrical signal based on the first baseband signal, the signal-detector circuit further generating the control signal with the first state when the monitor signal indicates the received first radio-frequency electrical signal is an acceptable signal and with the second state when the monitor signal indicates the received first radio-frequency electrical signal is not an acceptable signal,wherein the signal-detector circuit includes a comparator for comparing the monitor signal representative of the strength of the received radio-frequency electrical signal to a reference corresponding to a predetermined threshold level, the signal-detector circuit generating the control signal in response to an output of the comparator.
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Accused Products
Abstract
A system for transmitting or receiving signals may include an integrated circuit (IC), a transducer operatively coupled to the IC for converting between electrical signals and electromagnetic signals; and insulating material that fixes the locations of the transducer and IC in spaced relationship relative to each other. The system may further include a lead frame providing external connections to conductors on the IC. An electromagnetic-energy directing assembly may be mounted relative to the transducer for directing electromagnetic energy in a region including the transducer and in a direction away from the IC. The directing assembly may include the lead frame, a printed circuit board ground plane, or external conductive elements spaced from the transducer. In a receiver, a signal-detector circuit may be responsive to a monitor signal representative of a received first radio-frequency electrical signal for generating a control signal that enables or disables an output from the receiver.
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Citations
14 Claims
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1. A system comprising:
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a first transducer configured to convert electromagnetic signals into electrical signals; and a first integrated circuit (IC) operatively coupled to the first transducer, the IC including; a receiver circuit for receiving from the first transducer a first radio-frequency electrical signal and transforming the first radio-frequency electrical signal into a first baseband signal, and outputting the first baseband signal when a control signal has a first state and not when the control signal has a second state different than the first state; and a signal-detector circuit generating a monitor signal representative of a strength of the received first radio-frequency electrical signal based on the first baseband signal, the signal-detector circuit further generating the control signal with the first state when the monitor signal indicates the received first radio-frequency electrical signal is an acceptable signal and with the second state when the monitor signal indicates the received first radio-frequency electrical signal is not an acceptable signal, wherein the signal-detector circuit includes a comparator for comparing the monitor signal representative of the strength of the received radio-frequency electrical signal to a reference corresponding to a predetermined threshold level, the signal-detector circuit generating the control signal in response to an output of the comparator. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
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receiving by a first transducer a first radio-frequency electromagnetic signal; converting by the first transducer the first radio-frequency electromagnetic signal into a first radio-frequency electrical signal; receiving from the transducer by a receiver circuit of an integrated circuit (IC) the first radio-frequency electrical signal; transforming, by the receiver circuit, the first radio-frequency electrical signal into a first baseband signal; generating a monitor signal representative of a strength of the received first radio-frequency electrical signal based on the first baseband signal; monitoring by a signal-detector circuit the monitor signal; determining whether the monitor signal indicates the received first radio frequency electrical signal is an acceptable signal, wherein determining whether the monitor signal indicates the received first radio-frequency electrical signal is an acceptable signal includes comparing the monitor signal to a reference corresponding to a predetermined threshold level; generating a control signal with a first state when the monitor signal indicates the received first radio-frequency electrical signal is an acceptable signal and with a second state different than the first state when the monitor signal indicates the received first radio-frequency electrical signal is not an acceptable signal, the control signal generated based on a result of the comparing the monitor signal to the reference; outputting by the receiver circuit the first baseband signal when the control signal has the first state; and preventing by the receiver circuit the first baseband signal from being output when the control signal has the second state. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification