Antenna arrangement

Details Antenna arrangement Antenna arrangement

1998-08-11

2000-09-12

Ho, Tan

Communications: radio wave antennas

Antennas

Microstrip

343841, H01Q 138

Patent

active

061184055

ABSTRACT:
A radio frequency antenna arrangement comprising an array of radiating elements, such as radiating antenna patches, which are co-located in a circuit, such as a microstrip circuit, with feeder elements which couple electromagnetic radiation to the radiating elements. The antenna arrangement has an electrically conductive backplate located behind the circuit, which acts as a groundplane and which is separated from the circuit by a dielectric layer. To reduce electromagnetic interference from the feeder elements which could disrupt the antenna pattern an electrically conductive screen is located directly in front of the feeder elements of the circuit but selectively exposes the array of radiating elements. The screen is spaced from the feeder elements and is not electrically connected to the backplate so that the screen, feeder elements and backplate do not form a triplate structure.

REFERENCES:
patent: 4131894 (1978-12-01), Schiavone
patent: 4486758 (1984-12-01), De Ronde
patent: 4933679 (1990-06-01), Khronopulo et al.
patent: 5001492 (1991-03-01), Shapiro et al.
patent: 5005019 (1991-04-01), Zaghloul et al.
patent: 5598168 (1997-01-01), Evans et al.

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