Transmitter local oscillator leakage suppression
US10033427B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2015 |
| Grant date | Jul 24, 2018 |
| Priority date | — |
| Expiry date | Jun 11, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/30
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system for reducing a local oscillator leakage component. The system includes a transmitter channel to transmit data modulated using a transmitter local oscillator frequency. A transmitted signal includes a transmitter local oscillator leakage component. The system also includes a receiver channel to receive the transmitted signal using a receiver local oscillator signal having a frequency offset from the transmitter local oscillator frequency. The received signal includes the transmitter local oscillator leakage component isolated from one or more receiver impairments. The system further includes a feedback loop from the receiver channel to the transmitter channel to identify a power of the isolated transmitter local oscillator leakage component and to generate a local oscillator leakage cancellation signal based on the identified power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.