Design of microwave hybrid couplers using inter-coupled resonators

Lu, Shani (2012). Design of microwave hybrid couplers using inter-coupled resonators. University of Birmingham. M.Phil.

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Abstract

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.

Type of Work:

Thesis (Masters by Research > M.Phil.)

Award Type:

Masters by Research > M.Phil.

Supervisor(s):