6results about "One amplifier with multiple channels" patented technology

This application relates to a predistortion circuit for a wireless transmitter and a method for generating a predistorted baseband signal. Specifically, the invention discloses a predistortion circuit for a wireless transmitter, comprising a signal input configured to receive a baseband signal. Furthermore, the predistortion circuit includes a predistorter configured to generate a predistorted baseband signal using the baseband signal and a selection of a first predistorter configuration and a second predistorter configuration.

Provided a similar combination and cancellation power amplifier circuit including a combiner main circuit implemented by connecting an output of a main signal and branch similar input combination and cancellation parallel circuit or main signal and branch similar input combination and cancellation series circuit to a main power amplifier circuit. An output of a main signal and branch similar input combination combiner circuit in the main signal and branch similar input combination and cancellation parallel circuit or main signal and branch similar input combination and cancellation series circuit is connected to an input of the main power amplifier circuit, to implement a branch similar input combination and main signal combiner main circuit. In the present disclosure, a linear ACPR value of a Class C-like main power signal with extended linear gain of a main power signal of the branch similar input combination and main signal combiner main circuit is increased to above 30-35 dBc, and at the same time, a linear ACPR value of a Class C-like main power signal with extended linear gain of a main power signal of a branch similar input combination and input cancellation combiner main circuit is also increased to above 40-45 dBC.

A transmitter having a transmitter signal processor (TSP) is provided for processing a plurality of signals for transmission to produce an output signal of constant envelope. The TSP has a sum input c

Provided a similar combination and cancellation power amplifier circuit including a combiner main circuit implemented by connecting an output of a main signal and branch similar input combination and cancellation parallel circuit or main signal and branch similar input combination and cancellation series circuit to a main power amplifier circuit. An output of a main signal and branch similar input combination combiner circuit in the main signal and branch similar input combination and cancellation parallel circuit or main signal and branch similar input combination and cancellation series circuit is connected to an input of the main power amplifier circuit, to implement a branch similar input combination and main signal combiner main circuit.

Provided a similar combination and cancellation power amplifier circuit including a combiner main circuit implemented by connecting an output of a main signal and branch similar input combination and cancellation parallel circuit or main signal and branch similar input combination and cancellation series circuit to a main power amplifier circuit. An output of a main signal and branch similar input combination combiner circuit in the main signal and branch similar input combination and cancellation parallel circuit or main signal and branch similar input combination and cancellation series circuit is connected to an input of the main power amplifier circuit, to implement a branch similar input combination and main signal combiner main circuit. In the present disclosure, a linear ACPR value of a Class C-like main power signal with extended linear gain of a main power signal of the branch similar input combination and main signal combiner main circuit is increased to above 30-35 dBc, and at the same time, a linear ACPR value of a Class C-like main power signal with extended linear gain of a main power signal of a branch similar input combination and input cancellation combiner main circuit is also increased to above 40-45 dBC.

Provided in the present disclosure is a power amplification circuit with similar combining and cancellation. An output end of a parallel or series circuit for main-signal-branch similar input combining and input cancellation is connected to a main power amplification circuit, so as to form a power amplification circuit with similar combining and cancellation that has the function of a combined main circuit with branch similar input combining and input cancellation; and an output end of a combined-connection circuit for main-signal and branch similar input combining in the parallel or series circuit for main-signal-branch similar input combining and input cancellation is connected to an input end of the main power amplification circuit, so as to form a combined main circuit for branch similar input combining and a main signal. The present disclosure improves the linear ACPR value of a Class-C-like main power signal to 30-35 dBc or more after gain linear extension of a main power signal of a combined circuit for branch similar input combining and a main signal, and also improves the linear ACPR value of a Class-C-like main power signal to 40-45 dBc or more after gain linear extension of a main power signal of a combined main circuit with branch similar input combining and cancellation.