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In this paper a wideband microstrip 180° hybrid coupler is proposed. The coupler is designed using a double sided single layer substrate for Ultra-Wideband (UWB) applications. The device is constructed from Wilkinson Power Divider (WPD) employing microstrip line to slot transition for the construction of a delta (Δ) port. The input port (Σ port) of the WPD acts as the in phase power divider. The Σ...
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