Carrier leakage correction method for quadrature modulator
US10644913B2 · kind B2 · utility
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4References
11Claims
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Key dates
| Filing date | Jan 23, 2019 |
| Grant date | May 5, 2020 |
| Priority date | — |
| Expiry date | Jan 23, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0018
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A carrier leakage correction method for a quadrature modulator according to an embodiment includes inputting a test signal with a frequency fBB to a transmitter and up-converting the test signal with a frequency fL0 and down-converting with the frequency fL0. A frequency 2fBB component is detected in the down-converted test signal. One or a plurality of parameters of the transmitter is/are adjusted so as to reduce a magnitude of the detected frequency 2fBB component in the test signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.