2020-03-262020-03-262012IEEE Microwave and Wireless Components Letters; Vol. 22, Núm. 3; pp. 123-12515311309https://hdl.handle.net/20.500.12585/9101Electrically tunable evanescent mode half mode substrate integrated waveguide (HMSIW) resonators are implemented for S band applications. An HMSIW loaded with a complementary split ring resonator (CSRR) achieves forward electromagnetic wave transmission below the characteristic waveguide cutoff frequency due to evanescent wave amplification. A variable capacitor connected to one of the conductors of the CSRR changes its effective capacitance to ground, resulting in frequency tuning of the resonator. Three different configurations are investigated with a varactor diode connected between the ground and three different contact points of the CSRR. The external Q factor is slightly affected by the frequency tuning. More than 15% tunability is achieved around 3.4 GHz. Full wave structure simulation results are in good agreement with those of measurement. © 2006 IEEE.Recurso electrónicoapplication/pdfenghttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/article10.1109/LMWC.2012.2183860Complementary split ring resonator (CSRR)Half mode substrate integrated waveguide (HMSIW)Tunable resonatorVaractor diodeComplementary split-ring resonatorContact pointsEffective capacitanceElectrically tunableEvanescent modeEvanescent wave amplificationExternal Q factorFrequency-tuningFull wavesHalf-mode substrate integrated waveguidesS band applicationsTunabilitiesTunable resonatorsVaractor diodeVaractor diodesVariable capacitorWaveguide resonatorsCutoff frequencyMicrowave circuitsOptical resonatorsVaractorsVariable frequency oscillatorsSubstrate integrated waveguidesinfo:eu-repo/semantics/restrictedAccessAtribución-NoComercial 4.0 InternacionalUniversidad Tecnológica de BolívarRepositorio UTB36698427600371012272007402126778