Communications: radio wave antennas – Antennas – Measuring signal energy
Patent
1979-09-14
1980-11-04
Lieberman, E.
Communications: radio wave antennas
Antennas
Measuring signal energy
343826, H01Q 136, G01R 2908
Patent
active
042323193
ABSTRACT:
A broadband antenna for electromagnetic interference testing within a test chamber of limited dimensions includes a triangular array of tuned, quarter-wavelength monopole antenna elements with a common feed point in a plane parallel to elements defining a ground plane. The tuned elements transmit electromagnetic signals down to a low limiting resonant frequency determined by the longest element and further comprise, with the ground plane elements, a capacitor to transmit longer wavelength signals by a varying electric field between the triangular array and ground plane.
REFERENCES:
patent: 884071 (1908-04-01), Cabot
patent: 3179943 (1965-04-01), Buzbee
patent: 3550145 (1970-12-01), Tai
General Motors Corporation
Lieberman E.
Sigler Robert M.
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