Broadband folded Wilkinson power combiner/splitter

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Abstract
A new folded Wilkinson power combiner/splitter has been realized at millimeter-wave frequency with an area that is one half that of the standard two-stage Wilkinson power combiner. The new splitter has an insertion loss of 5dB, an isolation of 15dB and a return loss 15dB from 15 to 45GHz.