An Integratable Planar Waveguide Power Divider With Anti-Phases and Full Bandwidth

A novel integratable planar T-junction waveguide power divider, a so-called TEH(E-plane input and H-plane output) junction waveguide power divider, with anti-phase outputs and full bandwidth is proposed in this letter. It is basically a E-plane waveguide T-junction with its input port rotated around the axis of the two output ports by 90 degrees to form a planar structure. In order to expand its operation bandwidth, several stages of matching sections are added between the coupling cavity and each port. In order to verify the concept, a standard waveguide port TEH junction divider is designed and tested as an example. From the tested results, the reflection coefficient is lower than -20 dB and phase difference between the two output ports is within 177 +/-3 degrees in the full bandwidth from 26.3 to 40 GHz.