Planar array antenna

Details Planar array antenna Planar array antenna

1988-12-15

1990-01-09

Clawson, Jr., Joseph E.

Communications: radio wave antennas

Antennas

Microstrip

343717, H01Q 138

Patent

active

048931292

ABSTRACT:
In a planar array antenna in which radio frequency power fed by a feeder line is radiated from a plurality of radiation elements disposed in a planar state on one surface of a dielectric substrate on the other surface of which the feeder line is disposed, the feeder line has a first feeder part and a second feeder part. The first feeder part is spaced apart by a predetermined distance from the marginal contour of one of the radiation elements in the planar direction of the dielectric substrate, while the second feeder part is located within the width of the marginal contour of another one of the radiation elements and directly beneath the latter radiation element, and the second feeder part is divided into two parts with respective ends thereof confronting each other, the power coupling coefficient between the second feeder part and said another one radiation element is selected to be larger than that between the first feeder part and said one of the radiation elements, thereby making the planar array antenna operate with high radiation efficiency and small side lobes.

REFERENCES:
patent: 4603332 (1986-07-01), Mead et al.
"On the Modeling of Electromagnetically Coupled Microstrip Antennas--The Printed Strip Dipole", Katehi et al., IEEE Transaction on Antennas and Propagation, vol. AP-32, No. 11, Nov. 1984, pp. 1178-1186.

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