Split current current digital-to-analog converter (IDAC) for dynamic device switching (DDS) of an RF PA stage
US8565694B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2011 |
| Grant date | Oct 22, 2013 |
| Priority date | — |
| Expiry date | Nov 4, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/0416
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A split current current digital-to-analog converter (IDAC) and a radio frequency (RF) power amplifier (PA) stage are disclosed. The split current IDAC operates in a selected one of a group of DDS operating modes and provides a group of array bias signals based on the selected one of the group of DDS operating modes. Each of the group of array bias signals is a current signal. The RF PA stage includes a group of arrays of amplifying transistor elements. The RF PA stage biases at least one of the group of arrays of amplifying transistor elements based on the group of array bias signals. Further, the RF PA stage receives and amplifies an RF stage input signal to provide an RF stage output signal using at least one of the group of arrays of amplifying transistor elements that is biased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.