A Microstrip Coupler Design of Power Divider

This paper describes a microstrip power divider coupler,which is the send and receive(T / R) component of the important part played the role of monitoring and calibration.Project design work required frequency band 9.3GHz ~ 9.8GHz,port VSWR should be less than 1.2,isolation between the arms is greater than 25dB,the two directional couplers coupling C = 30dB,directivity D = 15dB ~ 20dB.Conventional microstrip directional coupler than stripline directional coupler poor,there are several ways to improve the microstrip directional coupler.This power divider coupler design using a common Wilkinson power divider and two arms coupled microstrip line consists of 1 / 4 wavelength microstrip coupler connected compensation capacitor presents a high-directivity coupler power divider design method is verified by simulation to meet the project requirements.