Electromagnetic anechoic chamber with an inner electromagnetic w

Details Electromagnetic anechoic chamber with an inner electromagnetic w Electromagnetic anechoic chamber with an inner electromagnetic w

1988-06-02

1990-06-05

Tarcza, Thomas H.

Communications: directive radio wave systems and devices (e.g.,

Radio wave absorber

With particular geometric configuration

342165, H01Q 1700

Patent

active

049317989

ABSTRACT:
For effectively suppressing echo of an electromagnetic wave emitted from an electromagnetic device (24) disposed in a closed space (13) which is defined by a shielding wall (10), an electromagnetic anechoic chamber comprises an absorption member (28) disposed in the space. The wall has an inner surface which reflects the electromagnetic wave into the space as a reflected wave. The reflected wave is directed to a particular position in the space. The absorption member is located at the particular position. Preferably, the inner space is formed along a substantially ellipsoidal shape having a first and a second focus point (14, 16). The electromagnetic device and the absorption member are locsated at the first and the second focus points, respectively.

REFERENCES:
patent: 2977591 (1961-03-01), Tanner
patent: 3114910 (1963-12-01), Rymes
patent: 3120641 (1964-02-01), Buckley
patent: 3165742 (1965-01-01), Taylor
patent: 3365667 (1968-01-01), Deutsch et al.
patent: 4218683 (1980-08-01), Hemming
patent: 4387467 (1983-06-01), Kirby
patent: 4521780 (1985-06-01), Preikschat
patent: 4695694 (1987-09-01), Hill et al.
patent: 4809003 (1989-02-01), Dominek et al.

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