Patent ID: 11870473
Assignee: APPLE INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A transmitter comprising:
a power amplifier; and
a digital-to-analog converter (DAC) coupled to the power amplifier, the DAC comprising
a clock signal line,
an in-phase digital code line,
a quadrature digital code line,
a plurality of cells arranged in a plurality of columns and a plurality of lines,
a first column decoder coupled to the clock signal line, the in-phase digital code line, and a first portion of the plurality of cells, the first portion of the plurality of cells configured to output a first output signal,
a second column decoder coupled to the clock signal line, the quadrature digital code line, and a second portion of the plurality of cells, the second portion of the plurality of cells configured to output a second output signal,
a line decoder coupled to the clock signal line, the quadrature digital code line, the first portion of the plurality of cells, and the second portion of the plurality of cells, and
a hybrid coupler configured to
receive the first output signal and the second output signal, and
output a quadrature analog signal to the power amplifier based on the first output signal and the second output signal.