Power amplification using a direct-upconverting quadrature mixer topology
US6307894A · kind A · utility
174Cited by
9References
56Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 1999 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | May 25, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D2200/0007
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power amplifier for use in a wireless communication system operates like a quadrature mixer with conversion gain. The amplifier includes a local oscillator that generates two reference signals 90.degree. out of phase with respect to each other. Four quadrature mixer elements receive signals representing the in-phase and quadrature components of a baseband signal. Each quadrature mixer amplifies the in-phase or the quadrature component of the baseband signal while upconverting with the corresponding reference signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.