Flexible multi-channel amplifiers via wavefront muxing techniques

A power amplification (PA) module comprising:

• a pre-processing unit having a first input, a second input, a first output containing information from said first and second inputs and a second output containing information from said first and second inputs;
• a first power amplification unit downstream of said pre-processing unit;
• a second power amplification unit downstream of said pre-processing unit, wherein said first and second power amplification units are arranged in parallel;
• a post-processing unit downstream of said first and second power amplification units, wherein said post-processing unit has a third input, a fourth input, a third output containing information from said third and fourth inputs and a fourth output containing information from said third and fourth inputs, wherein said third output is associated with an amplification of said first input, wherein said fourth output is associated with an amplification of said second input;
• and
• a finite-impulse-response (FIR) filter in a signal path between said pre-processing unit and said post-processing unit, wherein said finite-impulse-response (FIR) filter is configured to modulate said first input.

A power amplification module comprising:

• a baseband digital pre-processing unit having a first input, a second input, a first output containing information from said first and second inputs and a second output containing information from said first and second inputs;
• a phase-and-amplitude compensation circuit downstream of said baseband digital pre-processing unit;
• a first power amplification unit downstream of said phase-and-amplitude compensation circuit;
• a second power amplification unit downstream of said phase-and-amplitude compensation circuit, wherein said first and second power amplification units are arranged in parallel;
• an RF post-processing unit downstream of said first and second power amplification units, wherein said RF post-processing unit has a third input, a fourth input, a third output containing information from said third and fourth inputs and a fourth output containing information from said third and fourth inputs, wherein said third output is associated with an amplification of said first input, wherein said fourth output is associated with an amplification of said second input;
• and
• an optimizer in a signal path between said phase-and-amplitude compensation circuit and said RF post-processing unit, wherein said optimizer is configured to generate a parameter for said phase-and-amplitude compensation circuit.