Output stage for a digital RF transmitter, method for providing an RF output signal in a digital RF transmitter, and digital RF transmitter
US8237503B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2009 |
| Grant date | Aug 7, 2012 |
| Priority date | — |
| Expiry date | Mar 16, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/0483
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An output stage (1) for a digital RF transmitter is provided. The output stage comprises: an input adapted to receive an input signal (RFin, b7-b0) to be transmitted; a plurality N of power amplification sections (S1, S2, S3, S4); and an output (A, B) providing an output voltage signal. Each of the N power amplification sections (S1, S2, S3, S4) is arranged to receive the input signal (RFin, b7-b0) and comprises a transformer (T1, T2, T3, T4) adapted to provide a respective output signal. Each transformer comprises a primary stage and a secondary stage; the secondary stages of the transformers (T1, T2, T3, T4) of the N power amplification sections (S1, S2, S3, S4) are combined such that a combined output voltage signal of the output stage is provided. The N power amplification sections (S1, S2, S3, S4) are adapted such that the input signal (RFin, b7-b0) is latched by clock signals (clock1, clock2, clock3, clock4) comprising different phases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.