Digital polar transmitter
US8009765B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2008 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | May 12, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/389
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A digital polar transmitter includes a baseband processor configured to receive an input signal and to convert the input signal into a baseband amplitude component and a baseband phase component. The transmitter also includes a phase modulator in communication with the baseband processor. The phase modulator is configured to modulate an RF carrier signal based on the phase component and to generate a phase-modulated RF carrier signal. A power amplifier is provided in communication with the baseband processor and the phase modulator. The power amplifier is configured to amplify the phase-modulated RF carrier signal based on the baseband amplitude component and to generate an amplified RF signal. The transmitter also includes a digital feedback loop in communication with the power amplifier and the baseband processor. The digital feedback loop is configured to detect the amplified RF signal and to provide a digital amplitude feedback signal and a detected phase feedback signal to the baseband processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.