Transmit and receive combining using circulator with distortion cancellation
US10554245B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2015 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | Feb 23, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/52
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A telecommunications system may include a distortion cancellation subsystem for use with a circulator device coupling an antenna to a transmit path and a receive path. The distortion cancellation subsystem may include a correction circuit and a cancellation circuit. In some aspects, the correction circuit may include a processing device or adaptive filter to correct imperfections in transmit signal samples generated by directional couplers. The correction circuit may also include a summing device to remove receive signal components from the transmit signal samples. The cancellation circuit may receive the output signal of the correction circuit via an adaptive filter. The output of the adaptive filter may be summed with a receive signal to minimize distortion of the receive signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.