Modified Wilkinson Power Divider 1 to 4 at S-band as the part of smart antenna for satellite tracking, telemetry, and command subsystem

Abstract

Changing the value of current amplitude, phase or distance between antenna can make different radiation pattern in antenna array system. Using those principles, a smart antenna system can be made by using butler matrix which has configuration consisting of multiple power combiner and phase shifter. The power divider can be used in order to change the input values (current input) for each port of the buttler matrix. So we didn't need many signal generator to supply input of butler matrix (example for 4×4 butler matrix we just put 1 to 4 Power Divider on input port of butler matrix). A power divider has been designed in this research to support the smart antenna system for satellite tracking, telemetry, and command (TT&C). This research designed the modified Wilkinson Power Divider 3 port to be 5 ports with 4 output ports which can work at a frequency of 2.3-2.45 GHz with the insertion of each port is <; -8 dB, the maximum value theoretically amounted to -6 dB. This is because the power divider works by dividing power into 1:4 ratio.