Design and realization of multi-section sum and diff 8 ways Wilkinson Power Divider at S-Band frequency for 3 dimensional radar application

Abstract

The Wilkinson Power Divider (WPD) is one of the most common components used in array antenna feeding networks. It is lossless if the output ports are matched, reciprocal, and largely isolated. Many designs and modifications such as multi-section, open circuited stubs, or tapered transmission were proposed to increase the bandwidth of the conventional WPD. In this paper, we will discuss the design of multi-section sum and diff Wilkinson Power Divider for 3-dimensional radar application using CST Studio Suite 2018. The WPD operates at S-Band Frequency, realized in microstrip using substrate Rogers R0-4003C (lossy) with thickness 1.524 mm and relative permittivity 3.55. The simulation and measurement results are met the desired specification, which are less than-20 dB return loss, more than-10 dB insertion loss, less than-20 dB port isolation, and 180° phase difference.