URSI 2010, XXV Simposium Nacional de la Unión Científica Internacional de Radio, Bilbao
This document presents the design, simulation and
characterization of a hybrid-ring coupler using uniplanar
technology, developed at millimetre-wave frequencies. The
hybrid-ring coupler is designed using a combination of coplanar
waveguide (CPW) and slotline transmission lines in order to
achieve the phase difference response between the transmitted
and coupled ports. The use of uniplanar technology makes a
straightforward and fast implementation, and also offers an
easy integration with other MIC or MMIC applications. The
circuit is optimized to get the best phase results by tuning the
slotline branch of the ring. Circuit characterization shows a
wideband frequency response, around 17 GHz, in terms of
phase difference (180º±5º) working up to 40 GHz.
