Digital quadrature transmitter with class-B I/Q cell sharing
US10200232B1 · kind B1 · utility
5Cited by
1References
17Claims
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Key dates
| Filing date | Nov 1, 2017 |
| Grant date | Feb 5, 2019 |
| Priority date | — |
| Expiry date | Nov 1, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0007
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A digital quadrature architecture is presented that employs switched current digital power amplifiers and uses a digital class-B input code profile in combination with non-overlapping LO signals to overcome the low efficiency problems of conventional quadrature architectures. By employing digital class-B signals, the number of I/Q cells is reduced to half and the need for extra processing of the sign bits is eliminated in the transmitters, thereby improving the efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.