Design of broadband reconfigurable phase shifters

Abstract

In this article, a reconfigurable phase shifter loaded two PIN diodes is presented. Compared with the traditional phase shifters, the proposed phase shifter can achieve two phase shifts in one single phase shifter by controlling the PIN diodes, which make it more superior in the feeding network's application of array antennas. Moreover, this phase shifter can widen the bandwidth, decrease the size and realize a wider phase shift range in a simple structure.For simplifying the process of this design, this article introduces a simply method to design the configurable phase shifter. To confirm the presented design, the proposed phase shifter is fabricated and measured. A good agreement between the measured and simulated results can be observed.

Generalized Concept and MATLAB Code for Modeling and Analyzing Wideband 90° Stub-Loaded Phase Shifters with Simulation and Experimental Verifications

“…Slot lines were used in [ 16 ] to design a quasi-Schiffman phase shifter. A reconfigurable phase shifter was designed in [ 17 ] with the aid of two PIN diodes. Some phase shifters were attached directly to the antenna to provide a radiation with inherent phase shifting [ 18 ].…”