Calibration of active electronically steered antennas using trim bits and non-volatile memory

A method comprising:

• providing, by a plurality of antennas, a plurality of radio signals to a point in space where the plurality of radio signals constructively interfere with each other to form a directionally controlled beam, wherein the plurality of antennas include a first antenna and a second antenna;
• amplifying, by a power amplifier, an output signal of the first antenna, the power amplifier comprising a plurality of stages;
• adjusting, by a trim control circuit, a bias of a current of one of the plurality of stages of the power amplifier using a first plurality of trim bits from a non-volatile memory;
• scaling, by the trim control circuit, the bias of the current of one of the plurality of stages of the power amplifier by an integer between 0 and 2n−1 corresponding to a binary number formed by the first plurality of trim bits, wherein n corresponds to the number of trim bits;
• amplifying, by another power amplifier, another output signal of the second antenna, the other power amplifier comprising a plurality of stages;
• adjusting, by the trim control circuit, another bias of another current of one of the plurality of stages of the other power amplifier using a second plurality of trim bits from the non-volatile memory, wherein the bias is adjusted, and the other bias is adjusted, such that an error vector magnitude is minimized for an output power of the output signal from the first antenna and another output power of the other output signal from the second antenna, wherein the output power equals the other output power;
• and
• adjusting, by the trim control circuit, a current of a phase controller circuit using a third plurality of trim bits from the non-volatile memory.

An apparatus, comprising:

• means for providing, by a plurality of antennas, a plurality of radio signals to a point in space where the plurality of radio signals constructively interfere with each other to form a directionally controlled beam, the plurality of antennas including a first antenna and a second antenna;
• means for amplifying an output signal of the first antenna, the means for amplifying comprising a plurality of stages;
• means for adjusting a bias of a current of one of the plurality of stages of the means for amplifying using a first plurality of trim bits from a non-volatile memory;
• means for scaling, by the means for adjusting the bias, the bias of the current of one of the plurality of stages of the means for amplifying the output signal, by an integer between 0 and 2n−1 corresponding to a binary number formed by the first plurality of trim bits, wherein n corresponds to the number of trim bits;
• another means for amplifying another output signal of the second antenna, the other means for amplifying comprising a plurality of stages;
• means for adjusting another bias of another current of one of the plurality of stages of the other means for amplifying using a second plurality of trim bits from the non-volatile memory, wherein the bias is adjusted, and the other bias is adjusted, such that an error vector magnitude is minimized for an output power of the output signal from the first antenna and another output power of the other output signal from the second antenna, wherein the output power equals the other output power;
• and
• means for adjusting a current of a means for controlling a phase using a third plurality of trim bits from the non-volatile memory.

A non-transitory computer-readable medium storing instructions, which when executed by at least one data processor, result in operations comprising:

• providing, by a plurality of antennas, a plurality of radio signals to a point in space where the plurality of radio signals constructively interfere with each other to form a directionally controlled beam, the plurality of antennas including a first antenna and a second antenna;
• amplifying, by a power amplifier, an output signal of the first antenna, the power amplifier comprising a plurality of stages;
• adjusting, by a trim control circuit, a bias of a current of one of the plurality of stages of the power amplifier using a first plurality of trim bits from a non-volatile memory;
• scaling, by the trim control circuit, the bias of the current of one of the plurality of stages of the power amplifier by an integer between 0 and 2n−1 corresponding to a binary number formed by the first plurality of trim bits, wherein n corresponds to the number of trim bits;
• amplifying, by another power amplifier, another output signal of the second antenna, the other power amplifier comprising a plurality of stages;
• adjusting, by the trim control circuit, another bias of another current of one of the plurality of stages of the other power amplifier using a second plurality of trim bits from the non-volatile memory, wherein the bias is adjusted, and the other bias is adjusted, such that an error vector magnitude is minimized for an output power of the output signal from the first antenna and another output power of the other output signal from the second antenna, wherein the output power equals the other output power;
• and
• adjusting, by the trim control circuit, a current of a phase controller circuit using a third plurality of trim bits from the non-volatile memory.