Author/Authors :
Y.-H.، Chun, نويسنده , , J.-Y.، Moon, نويسنده , , S.-W.، Yun, نويسنده , , J.-K.، Rhee, نويسنده ,
Abstract :
Novel uniplanar backward directional couplers are analysed and designed. Microstrip parallel coupled lines and asymmetrical delay lines enable a multi-sectioned coupler to enhance directivity as well as the coupling. Single and multisectioned couplers at 1.8 GHz have been designed and measured, providing excellent directivity.
