IEEE Microwave and Wireless Components Letters · 2016 · 37 citations · 7 references
EngineeringElectrical EngineeringAntennasMicrowave EngineeringWireless CommunicationsAntenna ArraysBeamformingMicrowave AmplifiersMillimeter-wave CommunicationsRadio-frequency Integrated CircuitsWaveguidesBeam SplittersCombinersInsertion LossInsertion Loss MeasurementMicrowave CombinersReturn LossRidge WaveguidesWaveguide Splitters
A single-layer spatial power splitter-combiner structure is packaged in gap waveguide technology. The measured metal-only back-to-back structure features an average insertion loss less than 2.3 dB and a return loss larger than 10 to 20 dB over the entire 75-110 GHz W-band. The design procedure is outlined and the measured and simulated results are shown to be in good agreement. The structure can be used as a stand-alone power splitter and/or combiner (single-mode, all-excited in-phase channels), a quasi-optical beamformer to excite an array of slot antennas in the top ground plane by ridge gap waveguides, or as a back-to-back RF component in grid amplifier designs.
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Eva Rajo‐Iglesias, P.-S. Kildal · IET Microwaves Antennas & Propagation · 2011 · 282 citations · Full text