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US 2026/0246490 A1Published application
Replica signal generator for simultaneous bidirectional data communication link
AssigneeQUALCOMM Incorporated
InventorsJeffrey Mark HINRICHS, Ashwin SETHURAM
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Abstract
An apparatus, comprising: a first input/output (I/O) circuit comprising: a first transmit driver; a first continuous-time (CT) finite impulse response (FIR) replica signal generator including an input directly or indirectly coupled to an input of the first transmit driver; a first signal combiner including a first input coupled to an output of the first transmit driver, and a second input coupled to an output of the first CT FIR replica signal generator; and a first receiver including a first input coupled to an output of the first signal combiner.
Claims20
An apparatus, comprising:
- a first input/output (I/O) circuit comprising:
- a first transmit driver;
- a first continuous-time (CT) finite impulse response (FIR) replica signal generator including an input directly or indirectly coupled to an input of the first transmit driver;
- a first signal combiner including a first input coupled to an output of the first transmit driver, and a second input coupled to an output of the first CT FIR replica signal generator;
- and
- a first receiver including a first input coupled to an output of the first signal combiner.
3 more elements
A method, comprising:
- providing a first transmit signal to a first end of a communication channel, wherein the first transmit signal includes a set of one or more signal reflection artifacts;
- receiving a first receive signal at the first end of the communication channel, the first receiving signal being sent from a second end of the communication channel;
- generating a first replica transmit signal including a set of one or more replica signal reflection artifacts;
- combining the first transmit signal, the first receive signal, and the first replica transmit signal such that the first replica transmit signal and the first transmit signal substantially cancels out, while outputting substantially the first receive signal;
- and
- detecting data in the outputted first receive signal.
3 more elements
Dependencies are inferred from the claim text.