Aspects of this disclosure relate to an antenna array system and method of calibration using power and/or phase detectors equidistant between transmit paths of antenna array channels, and using power and/or phase detectors equidistant between receive paths of antenna array channels. In some aspects, the antenna array can calibrate the power and/or phase detectors based on a common signal transmitted from an output of a transmit path and/or an output of a receive path of a channel. In some aspects, the antenna array can calibrate receive and transmit paths across antenna array chips.