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US 11,683,046 B2Granted
System for and method of cancelling a transmit signal echo in full duplex transceivers
AssigneeAvago Technologies International Sales Pte. Limited
InventorsJingguang Wang, Jing Wang, Robert Roze, Kambiz Vakilian
Life of this patent
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Abstract
The systems and methods discussed herein utilized a wireless or wired transceiver having a transmitter and a receiver. The transceiver is configured to reduce distortion contributions associated with echo cancelling. The transmitter provides a replica signal and a transmit signal. The replica signal and the transmit signal can be provided using a common switch.
Claims20
A transmitter, comprising:
- a first circuit disposed on substrate and configured to provide a first analog signal;
- a second circuit disposed on the substrate and configured to provide a second analog signal;
- and
- a third circuit disposed on the substrate for the first circuit and the second circuit, the third circuit having a first switch for the first circuit and the second circuit configured to apply a reference voltage to the first circuit and the second circuit in response to a digital signal, wherein the second circuit is configured to provide a first signal for echo cancelling.
1 more element
A method, comprising:
- providing a digital input to a first circuit disposed on substrate and a second circuit disposed on the substrate;
- switching an active circuit disposed on the substrate for the first circuit and the second circuit using the digital input to provide a first analog signal and a second analog signal, wherein the first circuit and the second circuit share a switch in the active circuit;
- and
- providing the second analog signal to a summer for echo cancelling.
1 more element
A transceiver, comprising:
- a transmitter, comprising:
- a first passive circuit comprised of first passive elements;
- a second passive circuit comprised of second passive elements;
- and
- switches for the first passive circuit and the second passive circuit, the switches comprises a shared switch for a first passive element of the first passive elements and a second element of the second passive elements, wherein the second passive circuit is configured to provide a second analog signal and the first passive circuit is configured to provide a first analog signal for transmission;
- a summer coupled to the transmitter;
- and
- a receiver.
5 more elements
Dependencies are inferred from the claim text.