Title :
Effects of spacer parameters on resistive Hilbert curve array absorbers
Author :
Noor, A. ; Hu, Z.
Author_Institution :
Sch. of Electr. & Electron. Eng., Univ. of Manchester, Manchester, UK
Abstract :
In this paper, effects of permittivity and loss of dielectric spacer on performance of Hilbert curve array absorbers are investigated numerically. A bi-infinite resistive Hilbert curve array separated by a dielectric spacer from PEC ground plane was simulated using HFSS. Frequency range chosen was from 6 GHz to 18 GHz. Simulation was carried out with values of spacer permittivity equal to 0.1, 1, 2, and 4. Absorbers were then analyzed numerically for effect of spacer loss. Simulation was repeated for spacer conductivities of 0.1 and 1 Sm-1. From Simulated results it was observed that best performance is achieved with vacuum as spacer.
Keywords :
Hilbert spaces; dielectric losses; electrical conductivity; electromagnetic wave absorption; metamaterials; microwave materials; permittivity; PEC ground plane; bi-infinite resistive Hilbert curve array; dielectric spacer loss; dielectric spacer permittivity; frequency 6 GHz to 18 GHz; metamaterials; resistive Hilbert curve array absorbers; spacer conductivities; Bandwidth; Conductivity; Dielectric losses; Frequency; Hilbert space; Metamaterials; Permittivity; Polarization; Radar cross section; Reflection; Metamaterials; absorbing media; frequency response; frequency selective surfaces; propagation; radar cross sections; transmission line theory;
Conference_Titel :
Microwave Conference, 2009. APMC 2009. Asia Pacific
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-2801-4
Electronic_ISBN :
978-1-4244-2802-1
DOI :
10.1109/APMC.2009.5384151
