Electromagnetic energy shield

Details Electromagnetic energy shield Electromagnetic energy shield

1984-08-20

1996-11-26

Issing, Gregory C.

Communications: radio wave antennas

Antennas

Antenna components

343912, H01Q 1502, H01Q 1514

Patent

active

055790240

ABSTRACT:
A "shutter" type structure for transmitting electromagnetic energy within a selected frequency range and preventing the transmission of such energy outside such range during a first open shutter mode of operation and for preventing the transmission of any electromagnetic energy during a second closed shutter mode of operation. The structure includes an insulative member having an array of symmetrical conductive elements on at least one surface, such elements being interconnected by diode elements in both vertical and horizontal directions. The diodes are placed in their conductive states during the first mode of operation and in their non-conductive states during the second mode of operation.

REFERENCES:
patent: 3276023 (1966-09-01), Dorne et al.
patent: 3708796 (1973-01-01), Gilbert
patent: 3864690 (1975-02-01), Pierrot
patent: 4017865 (1977-04-01), Woodward
patent: 4126866 (1978-11-01), Pelton
patent: 4160254 (1979-07-01), Wise
patent: 4266203 (1981-05-01), Saudreau et al.
patent: 4450449 (1984-05-01), Jewitt

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