Design of a Ku Band Six Bit Phase Shifter Using Periodically Loaded-Line and Switched-Line With Loaded-Line

A Ku band six-bit phase shifter is presented in this work. The developed phase shifter consists of four bits realized as periodically loaded-line and two bits based on novel switched-line with loaded-line. A 71 line impedance is chosen for the main transmission line in order to reduce the diode loss. Every bit has special tuning elements for the fine tuning of the required phase shift. The phase error for the 64 phase states is not greater than 3.4 degrees at the designed center frequency of 15 GHz, and the insertion loss for the 64 phase states is 5.2 dB1.1 dB over the operating bandwidth of 14.9-15.1 GHz.