title: A novel tunable frequency selective surface absorber with dual-DOF for broadband applications.
abstract: A novel tunable frequency selective surface (FSS) with dual-degrees of freedom (DOF) is presented, and firstly applied to broadband absorber. Based on a simple prototype unit cell resonator, an approach for achieving multi-resonances is studied. A unit cell pattern with gradient edges is discussed, and variable resistor and variable capacitor are introduced to fully utilize its characteristic of multi-resonances. Bias line is designed to provide bias voltage respectively for two variable devices and provide two operational DOF for FSS. Simulation and measurement results both show that the tunable FSS absorber with dual-DOF has wideband absorption with the reflectivity below -10 dB in 1-5 GHz and with a total thickness of about 10 mm.
authors.forename: Peng
authors.initials: P
authors.lastname: Kong
authors.forename: XiaoWei
authors.initials: X
authors.lastname: Yu
authors.forename: ZhengYang
authors.initials: Z
authors.lastname: Liu
authors.forename: Kai
authors.initials: K
authors.lastname: Zhou
authors.forename: Yun
authors.initials: Y
authors.lastname: He
authors.forename: Ling
authors.initials: L
authors.lastname: Miao
authors.forename: JianJun
authors.initials: J
authors.lastname: Jiang
mesh_terms: D065638:Absorption, Radiation; D055620:Optical Phenomena; D055095:Optics and Photonics / Q000295:instrumentation*