A Compact Crossover Design for Butler Matrix Feeding Network in 5G Sub 6 GHz Wireless Applications

The butler matrix is one of the passive feeding networks used with array antennas to form beams. There are several advantages using this beamforming network. One them that it easy manufacture, and other low in cost. Butler structure consists three microwave components. These directional hybrid couplers, phase shifters, crossovers. A crossover a component cross between two lines high isolation them. This article presents microstrip for use designed 5G applications. has been presented was simulated. proposed operates at 4.5 GHz mostly FR-4 substrate. dielectric constant substrate 4.3 thickness 1.57 mm. size 62.8 x 27.8 mm^2. reflection coefficient level permissible order be utilized network application. return loss value 26.09 dB GHz. Same time 22.78 dB.