Gysel High Power Divider/Combiner

Gysel Dividers/Combiners are an attractive high power strip line topology for narrow band, in-phase applications.  Similar to Wilkinson and Branch Line topologies, the Gysel topology is constructed using a single layer strip line circuit, which is easier to manufacture than the two-layer strip line hybrid coupler topology.  Another advantage of the Gysel topology is that its internal loads are grounded to the housing, making it suitable for high power applications.

In a Gysel Divider/Combiner, there are five ports in the circuit: one input port, two output ports, and two unused ports terminated with loads. In the divider mode, the input signal is divided equally in phase and amplitude between the outputs.  The loads provide the isolation between the outputs.  In the combiner mode, two inputs are combined in the output. When two inputs are balanced, both in amplitude and phase, there is no power dissipated in the loads. When the two inputs are not balanced, either in amplitude or phase, a portion of the input power is absorbed by the loads.

MEC’s Gysel Dividers/Combiners are specially designed for high power applications using proprietary technologies. Input ports are coaxial connectors, and the output port can be either a coaxial connector or waveguide. The loads can be integrated into the housing with fins for heat dissipation, or alternatively, the user can choose to terminate two unused ports externally for flexible placement of high-power loads.

MEC’s C630-132 is a newly designed 5.4-5.9 GHz 4-way high power combiner implementing three 2-way Gysel combiners in a single package. It offers low amplitude and phase balance, low insertion loss, high isolation.