In this paper, an isolation enhanced multiway power divider for wideband beamforming array is proposed. This method is based on the concept which converts the divider into multi-section stepped impedance transformer. In addition to this scheme, lumped inductors and capacitors are incorporated in isolation networks to enhance the isolation bandwidth of the divider. In/Output reflection and isolation characteristic of the divider can be analyzed with the superposition of divider's excitation modes and its equivalent circuit characteristics. Due to additional inductors and capacitors, divider's isolation bandwidth has increased about 30% compared to resistor only divider.
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