%0 Journal Article %A Hinojosa Jiménez, Juan %A Saura Ródenas, Adrián %A Álvarez Melcón , Alejandro %A Martínez Viviente, Félix Lorenzo %T Reconfigurable coplanar waveguide (CPW) and half-mode substrate integrated waveguide (HMSIW) band-stop filters using a varactor-loaded metamaterial-inspired open resonator %D 2017 %@ 1996-1944 %U http://hdl.handle.net/10317/9394 %X An open ring resonator (ORR) loaded with a varactor diode is designed and implemented in order to achieve high-performance tunable band-stop filters in planar technology with a compact size. This varactor-loaded ORR (VLORR) is versatile. It allows a shunt connection with different planar waveguide sections. In this paper, it has been connected to a coplanar waveguide (CPW) and a half-mode substrate integrated waveguide (HMSIW). As a reverse bias voltage is applied to the VLORR, a continuous tuning over the resulting stop-band can be achieved. To illustrate the possibilities of the VLORR, three prototypes have been designed, fabricated, and characterized. The three prototypes show an outstanding performance, with a rejection level at the resonant frequency and a tuning range greater than 12 dB and 85%, respectively. This VLORR has high potential value in microwave communication systems to eliminate unwanted signals. %K Electrónica %K Coplanar waveguide (CPW) %K Metamaterials %K Microwave filters %K Substrate integrated waveguide (SIW) %K Tunable devices %K Varactor diode %K 2202.10 Radioondas y Microondas %~ GOEDOC, SUB GOETTINGEN