PHASED ARRAY WEIGHTING FOR POWER EFFICIENCY IMPROVEMENT WITH HIGH PEAK-TO-AVERAGE POWER RATIO SIGNALS

摘要

A phased array includes a number of transmission units with an unequal array of power amplifiers for receiving or transmitting input signals at millimeter wave frequencies. The phase array transmits millimeter waves in air to reconstruct original phase-and amplitude signals by combining the signals from the unequal array of power amplifiers. The unequal array of power amplifiers comprises power amplifiers having a higher peak power than other power amplifiers of the array. The power amplifiers can also have different transmission powers from one another.

主权项

1. A phased array communication system comprising:
an array of transmission units comprising:
an unequal array of power amplifiers comprising a first power amplifier and a second power amplifier having different output powers and different saturation power levels between the first power amplifier and the second power amplifier; andan array of antenna ports, coupled to the unequal array of power amplifiers, configured to receive a plurality of input signals comprising different phases and gains among input signals of the plurality of input signals; wherein the array of transmission units is configured to generate over the air a combined signal by transmitting at least two signal outputs at a predetermined angle over the air to reconstruct an amplitude and phase modulated signal of at least one signal of the plurality of input signals.