Design and Simulation of a Wideband 3‐Bit Phase Shifter for 4.5–5.5 GHz Applications

In this article, a phase shifter circuit designed for next‐generation communication systems was presented. Operating at 4.5–5.5 GHz, the circuit in question is a 3‐bit all‐pass LC lattice, which was initially analyzed using MATLAB. Following this analysis, the circuit was set up and simulated in advanced design system (ADS) using numerical values derived from the MATLAB simulations. A switch capacitor is employed as the switching element within the circuit. For phase shifts of 45°, 90°, and 180°, the phase errors are 3°, 9°, and 0°, respectively, while the power losses are 1.5 dB, 3 dB, and 1.9 dB, respectively.