Low-Power Process and Temperature-Invariant Constant Slope-and-Swing Ramp-Based

Abstract

This article presents a process- and temperature- invariant high-resolution and highly linear low-power phase interpolator (PI) as an enabler for discrete-time spatial signal processors (SSPs) and for various mixed-mode RF transceiver architectures. Using current integration techniques, the pro- posed PI generates an adaptable constant slope-and-swing ramp signal to achieve significantly lower power suited for multi- ple antenna elements. Switched-capacitor-based bias generation enables tracking