Design of microwave hybrid couplers using inter-coupled resonators

[摘要] Design techniques for two-port coupled resonator filters are extended here to four-port coupled resonator circuits. Formulations to represent scattering parameters in terms of the general coupling matrix for four-port coupled resonator circuits are derived. The major part of this work is concerned with the synthesis of the coupled resonator hybrid couplers. Two types of hybrid couplers, 90° and 180°, are presented. The design approach is based on an analytic solution, calculating the coupling matrix from the equivalent circuit of conventional hybrids. To verify the design methodology, an X-band coupled resonator 90° hybrid coupler is implemented using waveguide cavities.

[发布机构] University:University of Birmingham;Department:School of Engineering, Department of Electronic, Electrical and Systems Engineering

[关键词] T Technology;TK Electrical engineering. Electronics Nuclear engineering