Dynamic device switching (DDS) of an in-phase RF PA stage and a quadrature-phase RF PA stage

摘要

An in-phase radio frequency (RF) power amplifier (PA) stage and a quadrature-phase RF PA stage are disclosed. The in-phase RF PA stage includes a first group of arrays of amplifying transistor elements and the quadrature-phase RF PA stage includes a second group of arrays of amplifying transistor elements. A group of array bias signals is based on a selected one of a group of DDS operating modes. Each of the group of array bias signals is a current signal. The in-phase RF PA stage biases at least one of the first group of arrays of amplifying transistor elements based on the group of array bias signals. Similarly, the quadrature-phase RF PA stage biases at least one of the second group of arrays of amplifying transistor elements based on the group of array bias signals.

主权项

1. Circuitry comprising:
an in-phase radio frequency (RF) power amplifier (PA) stage comprising a first plurality of arrays of amplifying transistor elements and adapted to bias at least one of the first plurality of arrays based on a plurality of array bias signals, such that the plurality of array bias signals is based on a selected one of a plurality of dynamic device switching (DDS) operating modes; and a quadrature-phase RF PA stage comprising a second plurality of arrays of amplifying transistor elements and adapted to bias at least one of the second plurality of arrays based on the plurality of array bias signals,wherein each of the plurality of array bias signals is a current signal provided by a split current digital-to-analog converter (IDAC).