A single-layer tuneable microwave absorber using an active FSS

Author

Tennant, A. ; Chambers, B.

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. of Sheffield, UK

Volume

14

Issue

1

fYear

2004

Firstpage

46

Lastpage

47

Abstract

An experimental single-layer active microwave absorber in described. The absorber is a planar structure based upon the topology of a Salisbury screen, but in which the conventional resistive layer is replaced by an active frequency selective surface (FSS) controlled by pin diodes. The resulting structure has superior reflectivity-bandwidth characteristics compared to conventional passive absorbers of corresponding thickness. Measured data are presented and show that the reflectivity response of the absorber can be controlled over the frequency band from 9 to 13 GHz.

Keywords

electromagnetic wave absorption; frequency selective surfaces; microwave materials; tuning; 9 to 13 GHz; Salisbury screen; active FSS; active frequency selective surface; frequency band; passive absorbers; pin diodes; reflectivity-bandwidth; resistive layer; single-layer tuneable microwave absorber; Current measurement; Diodes; Frequency dependence; Frequency measurement; Frequency selective surfaces; Impedance; Reflectivity; Resonant frequency; Topology; Tunable circuits and devices;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2003.820639

Filename

1264059