Design of 0/π Switch Phase Shifter for S-Band Telemetry Ground Station System

This paper presents the design of a 0/π switch phase shifter for S-band telemetry ground station system. According to the principle of switched-line phase shifter, the low delay RF switch and reverse logic device(74HC04) are selected, and the 0/π phase shifter circuit is designed and simulated. Combined with practical application, the Wilkinson power divider, parallel coupled line directional coupler and 0/π phase shifter are designed on the same circuit board to form a 0/π switching phase shifter circuit module.