Method and apparatus for minimizing local oscillator leakage in a transmitter
US8718577B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 2012 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | Nov 29, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B15/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
According to techniques described herein LO leakage may be automatically minimized in a transmitter chain, even though the leakage may be varying in nature. In an embodiment a target signal for transmission is received. An offset for reducing the effects of the LO leakage is applied to the target signal. After the offset is applied, the target signal is converted to a transmission signal using the LO. A power associated with the transmission signal is determined. The offset is then adjusted based on the power associated with the transmission signal. In another embodiment, the offset signal is adjusted in a manner that minimizes the power associated with the transmission signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.