A Phase-Modulation Phase-Shifting Phased-Array Transmitter With Phase Self-Calib

Abstract

In this article, a digital phase-modulation (PM) phase-shifting (PS) phased-array transmitter is proposed. Both PM and PS are implemented in a PS modulator. Meanwhile, a self-calibration loop is introduced in the PS modulator for improved phase linearity and minimized phase error. The phase control voltages for the PS modulator are generated from the self-calibration loop based on the output signals and reference signals. To reduce the calibration time, a capacitor-array-based state store memory