Attenuation apparatus for an aerial array

Details Attenuation apparatus for an aerial array Attenuation apparatus for an aerial array

1984-02-10

1986-05-27

Lieberman, Eli

Communications: radio wave antennas

Antennas

With electrical shield

343885, H01Q 152

Patent

active

045918678

ABSTRACT:
Attenuating apparatus is provided for reducing disturbance between transmitting and receiving aerials mounted vertically one above the other. Attenuation is achieved by a grounded screen (1) and a spacer, both mounted between the aerials. The screen is provided with cutouts (6) having a pitch (c) of .lambda./2, where .lambda. is the mean frequency of the pertinent frequency band and .lambda./4 is the depth (d) of the cutouts. The length of the spacer is 0.70.lambda..

REFERENCES:
patent: 2184940 (1939-12-01), Cork et al.
patent: 4329690 (1982-05-01), Parker
patent: 4359743 (1982-11-01), DeSantis

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