Antenna device
AssigneeFujikura Ltd.
InventorsShailendra Kaushal, Ning Guan
Life of this patent
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Abstract
Patch antennas include four radiation elements arrayed in a rectangular lattice pattern at four positions around a feeding point in the electrode, and wiring which electrically couples each of the radiation elements and the feeding point with an equal wiring length, and is fed by a line-shaped feeding conductor arranged at a position intersecting slots formed at a ground conductor plate, where the feeding conductor has a repetitive branch pattern in which multiple pieces of line-shaped wiring are connected in T-shapes being perpendicular to each other at a total of 2N−1 branch points from a base end to each of the tips, and each of the tips is bent in a same direction in the second direction from a terminal end of the line-shaped wiring to which the tip is connected.
Claims5
An antenna device comprising:
- a first dielectric layer;
- flat-plate-shaped 2N patch antennas where N is an integer greater than or equal to 2 arranged on a first surface of the first dielectric layer, the patch antennas each comprising an electrode for electromagnetic coupling;
- a ground conductor plate arranged on a second surface opposite to the first surface of the first dielectric layer, the ground conductor plate formed with slots, which are non-conductive portions, extending in a first direction at positions facing the electrodes;
- a second dielectric layer secured to the ground conductor plate so as to face the first dielectric layer with the ground conductor plate sandwiched therebetween;
- and
- a line-shaped feeding conductor formed on the second dielectric layer so as to face the ground conductor plate with the second dielectric layer sandwiched therebetween, the feeding conductor arranged in a positional relationship intersecting the slots when viewed from a normal direction of the patch antennas with tips extending in a second direction intersecting with the first direction when viewed from the normal direction,
- wherein the patch antennas each further comprise:
- four radiation elements arrayed in a rectangular lattice pattern at four positions centered at a feeding point in the electrode;
- and wiring which electrically couples each of the radiation elements and the feeding point with an equal wiring length,
- the feeding conductor has
- a repetitive branch pattern in which multiple pieces of line-shaped wiring are connected in T-shapes being perpendicular to each other at a total of 2N−1 branch points to enable connection from a base end to each of the tips, and
- each of the tips is bent in a same direction in the second direction from a terminal end of the line-shaped wiring to which the tip is connected.
Dependencies are inferred from the claim text.