Title :
Genetic Algorithm optimisation of dual polarised pyramidal absorbers loaded with a binary FSS
Author :
Holtby, Daniel G. ; Ford, Kenneth L. ; Chambers, Barry
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Sheffield, Sheffield, UK
Abstract :
This paper describes a new type of pyramidal absorber for use in anechoic chambers. To improve the low frequency performance of the absorber, it is loaded with impedance in the form of a frequency selective surface (FSS). A technique for optimising both the pattern and the position of the FSS is discussed which maximises the absorber´s bandwidth for use with either TE or TM incident waves.
Keywords :
anechoic chambers (electromagnetic); frequency selective surfaces; genetic algorithms; anechoic chamber; binary FSS; dual polarised pyramidal absorber; frequency selective surface; genetic algorithm; low frequency performance; Anechoic chambers; Bandwidth; Electromagnetic heating; Frequency selective surfaces; Genetic algorithms; Permittivity; Polarization; Reflectivity; Shape; Tellurium;
Conference_Titel :
Antennas & Propagation Conference, 2009. LAPC 2009. Loughborough
Conference_Location :
Loughborough
Print_ISBN :
978-1-4244-2720-8
Electronic_ISBN :
978-1-4244-2721-5
DOI :
10.1109/LAPC.2009.5352445
