Design and Implementation of Intermediate Frequency Dual Band 2-Way Wilkinson Power Divider for Radar System

摘要

In this paper, design and implementation of dual band 2-Way Wilkinson Power Divider (WPD) is presented. This WPD can used for frequency of 456 MHz (X-Band Radar) and frequency 600 MHz (S-Band Radar). The Dual Band WPD used a two-section broadband method which consists only of cascaded sections of branch-lines (Z_A and Z_B) and Resistors (R_1 and R_2). The Dual Band WPD was implemented on a FR4 Substrate with ε_r = 4.6 and thickness of 1.575 mm. From the simulation results, a good agreement about return loss, insertion loss and isolation were obtained. But in the measurement results, the WPD behaves like a wideband power divider. The simulation and measurement results show that the dual band design with the two-section broadband method is not suitable for dual band design with narrow bandwidth (about 144 MHz).