Mi-Wave’s 640 Series E-plane Tees consist of a length of standard flanged waveguide with a perpendicular E-plane coupling arm symmetrically located on the broad waveguide wall. Input power is divided equally and in the opposite phase between the two outputs.
Similarly, the 650 Series H-plane Tees feature an H-plane coupling arm located on the narrow waveguide wall. Power at the coupling arm input is divided into equal signals in phase at the main outputs. These devices are available in standard waveguide sizes from 12.4 to 110 GHz. Neither the 640 Series or the 650 Series Tees have matched junctions and therefore are not recommended for low VSWR applications.