Abstract: This article presents a sensor based on branch line couplers for detection of dielectric samples. The two $50 \Omega $ branches of the coupler are used as sensing elements, where one of them ...

Abstract: A 60 GHz reduced-size branch-line coupler has been developed using elevated-center coplanar waveguide (EC-CPW) transmission lines. The coupler is fabricated in a 90 nm CMOS technology and ...