Design of 0-15GHz Band 180 Degree Digital Phase Shifting Cell Topology

Abstract

In this work, ultra wide band and wide phase range phase shifter topology using lattice structures is presented. The proof of concept of the topology is exhibited for 1800 phase shifting cell using 0.18um TSMC CMOS process. The proposed architecture achieves frequency band of 0-15GHz with less than 10 phase error over entire band. This work shows superior performance over existing passive state of art architectures with having larger bandwidth and lower phase error.