Wideband gridded square frequency selective surface

Details Wideband gridded square frequency selective surface Wideband gridded square frequency selective surface

1988-01-25

1989-03-21

LaRoche, Eugene R.

Communications: radio wave antennas

Antennas

Antenna components

333202, H01Q 1502, H01Q 1510

Patent

active

048147850

ABSTRACT:
A wideband frequency selective surface 10 is disclosed which includes a square grid 12 having a first plurality of parallel conductive lines perpendicularly intersecting a second plurality of parallel conductive lines to provide a plurality of squares. The distance between the parallel conductive lines is p. A plurality of conductive square loops 20-23 are included within the plurality of squares. The distance between each line segment of each square loop and the corresponding adjacent parallel conductive line segment of the square grid is g. The distance g is greater than one quarter times the distance p for wideband performance.

REFERENCES:
patent: 3148370 (1964-09-01), Bowman
patent: 4656487 (1987-04-01), Sureau et al.
patent: 4743919 (1988-05-01), Chang et al.
Arnaud, J. A. and Ruscio, J. T.; "Resonant-Grid Quasioptical Diplexer"; Electronic Letters; Dec. 13, 1973, vol. 9, No. 25; pp. 589-590.
Lee, C. K. and Langley, R. K.; "Equivalent Circuit Models for Frequency Selective Surfaces at Oblique Angles of Incidence"; IEE Proceedings; vol. 132, part H, No. 6, Oct. 85; pp. 395-398.
Langley and Parker; "Equivalent Circuit Model for Arrays of Square Loops"; Electronics Letters; Apr. 1, 1982, vol. 18, No. 7; pp. 294-296.
Marcuvitz, N.; Waveguide Handbook; McGraw Hill, 1951, pp. 280-284.

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