Signal transceiving apparatus and method having echo-canceling mechanism
US11711111B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 2021 |
| Grant date | Jul 25, 2023 |
| Priority date | — |
| Expiry date | Sep 2, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B3/23
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a signal transceiving apparatus having echo-canceling mechanism. A mixer circuit includes a Wheatstone bridge and a transformer winding circuit. The Wheatstone bridge includes another transformer winding circuit and a variable load and includes a first input terminal, a first output terminal, a second input terminal and a second output terminal located at each two neighboring arms in an order. A transmission circuit is coupled to the first input terminal and the second input terminal to perform signal transmission through the mixer circuit. A receiving circuit is coupled to the first output terminal and the second output terminal to perform signal receiving through the mixer circuit. A control circuit adjusts the impedance of the variable load when a residual echo noise amount does not satisfy a minimum echo noise amount condition, and stops to adjust the impedance when the residual echo noise amount satisfies the condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.