System, method and device for power amplification of a signal in an integrated circuit

摘要

According to an aspect of present disclosure, a set of power amplifiers are used to amplify power of a signal for transmission. The signal powers from a set of power amplifiers are coupled to set of primary windings which are commonly coupled to a secondary winding such that the powers on the primary windings are additive in the secondary winding. A current path on the primary side is provided for flow of a current that is induced on at least one primary winding when a power amplifier coupled to that primary winding is in “off” state. As a result, the induced current is prevented from flowing in to the power amplifier that are in “on” state. Further, the current path isolates the power amplifiers from each other thereby enabling the power amplifiers to operate at the rated efficiency. In one embodiment, the current path is provided using a resistor network.

主权项

1. An integrated circuit comprising:
a first power amplifier and a second power amplifier; a first primary winding configured to directly receive first power solely from the first power amplifier and a second primary winding configured to directly receive second power solely from the second power amplifier wherein, both the first primary winding and the second primary winding are commonly electromagnetically coupled to a secondary winding such that the power transferred from the first primary winding and the second primary winding are additive on the secondary winding; and a current path connected between the first primary winding and the second primary winding enabling a flow of a first current induced on at least one of first primary winding and second primary winding when one of first power amplifier and second power amplifier is in “off” state.