Apparatus and method for adaptive polar transmitter linearization and wireless transmitter employing the same
US8150336B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2008 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Jun 22, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/0425
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A polar transmitter and a method of linearizing a polar transmitter. In one embodiment, the transmitter includes: (1) a transmit chain having a predistorter configured to employ first amplitude and phase compensation lookup tables to carry out predistortion in the transmit chain, (2) a receiver coupled to the transmit chain and (3) predistortion compensation circuitry associated with the receiver and configured to update second amplitude and phase compensation lookup tables associated therewith based on at least one signal from the transmit chain, the values in the updated second amplitude and phase compensation lookup tables thereby available for subsequent predistortion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.