In one embodiment, an integrated circuit antenna array is provided that includes: a low-voltage substrate; a high-voltage substrate; a digital-to-analog converter (DAC) integrated with the low-voltage substrate, the DAC being operable to receive a digital command and convert it into an analog voltage; a voltage-controlled oscillator (VCO) integrated with the low-voltage substrate, the VCO providing an RF signal having an output frequency responsive to the analog voltage; a plurality of switching power amplifiers integrated with the high-voltage substrate, each switching power amplifier receiving an RF signal from the low-voltage substrate and providing an amplified RF output signal; and a plurality of antennas adjacent the high-power substrate, each antenna associating with a corresponding one of the switching power amplifier so as to transmit the amplified RF output signal from the corresponding switching power amplifier.