Title :
Thick frequency selective surfaces
Author :
Webb, D.B. ; Michielssen, E. ; Mittra, R.
Author_Institution :
Electromagn. Commun. Lab., Illinois Univ., Urbana, IL, USA
Abstract :
As an additional means of controlling bandwidth, the use of periodic screens in free space with thick metallization was investigated for single-square loop and double-concentric-square loop elements. These loops elements were chosen because the passbands of such screens, with tight lattice spacing, display a remarkable insensitivity to incident polarization and angle of incidence. The effect of thick metallization on passband width was investigated for both transmitted and reflected radiation. All results obtained are from a method of moments solution of the electric field integral equation. For FSS (frequency selective surface) screens with thick metallization, triangular patch basis functions were utilized to represent electric current on the surface of the three-dimensional unit cell structure.<>
Keywords :
antenna theory; band-pass filters; integral equations; metallisation; bandpass filter FSS; double-concentric-square loop elements; electric field integral equation; frequency selective surfaces; method of moments solution; passband width; periodic screens; single square loop elements; thick FSS; thick metallization; triangular patch basis functions; Bandwidth; Displays; Frequency selective surfaces; Integral equations; Lattices; Metallization; Moment methods; Passband; Polarization; Thickness control;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-0730-5
DOI :
10.1109/APS.1992.221501
