IEEE Microwave and Guided Wave Letters · 1997 · 21 citations · 1 references
EngineeringElectrical EngineeringAntennasElectromagneticsMicrowave EngineeringCoupled CircuitsElectric CircuitsMicrostrip AntennasMicrostrip CircuitsMicrowave Transmission LinesTransmission LinesAperture-coupled Microstrip AntennasMicrostrip Circuit DesignMicrostrip CouplersMicrostrip Integrated CircuitsMicrostrip LinesMicrostrip T-junctionsMicrostrip Transmission LinesPlanar Microwave Circuits
The operating principles of a compact planar magic-T junction are described and experimentally validated. The distinguishing feature of this component is the placement of the difference port on a layer separated from the other three ports by a ground plane. Moreover, the two parts of the component are electromagnetically coupled through a slot-aperture in the ground plane. The component is inherently multilayer, i.e., the transition between the circuit layers is a functional part of the device. The tested microstrip prototype performs well over a frequency range of about 40%.
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