Dielectric waveguide slot antenna
First Claim
1. A dielectric waveguide comprising:
- a dielectric waveguide having a slot of elongate shape through which a dielectric is exposed in a part of an electrically conductive film formed on a surface of the dielectric waveguide;
a printed circuit board having a via hole of elongate shape formed therein at a position opposed to the slot; and
a conductor plate having a first through-hole of elongate shape formed therein at a position opposed to the via hole, and a pair of second through-holes of elongate shape formed in a vicinity of the first through-hole,wherein the first through-hole and the second through-holes are in the same plane;
wherein the first through-hole is fed with electric power while the second through-holes are not fed with electric power;
wherein the dielectric waveguide, the printed circuit board and the conductor plate are joined together with aligning the slot, the via hole and the first through-hole with each other;
wherein the printed circuit board has a conductor layer formed in positions facing to the second through-holes;
wherein the pair of second through-holes are arranged point-symmetrically with each other with respect to the center of the first through-hole and are not aligned symmetrically with respect to a line orthogonal to a longitudinal direction of the first through-hole, and are rotated with respect to the longitudinal direction of the first through-hole;
wherein a rotation angle of each of the pair of second through-holes is about 45°
with respect to the longitudinal direction of the first through-hole;
wherein the second through-holes have a longitudinal length of about 1.4 times as long as a longitudinal length of the first through-hole; and
wherein the dielectric waveguide radiates a circular polarized wave.
2 Assignments
0 Petitions
Accused Products
Abstract
A dielectric waveguide slot antenna which is capable of radiating a circularly-polarized wave comprises: a dielectric waveguide having a slot through which a dielectric is exposed in a part of an electrically conductive film formed on a surface of the dielectric waveguide; a printed circuit board having a via hole opposed to the slot with the same shape as that of the slot; and a conductor plate having a first through-hole opposed to and having approximately the same shape as the via hole, and a pair of second through-holes in a vicinity of the first through-hole. The dielectric waveguide, the printed circuit board and the conductor plate are joined together with aligning the slot, the via hole and the first through-hole with each other. The printed circuit board has a conductor layer formed in positions facing to the second through-holes, and the second through-holes are arranged point-symmetrically with each other.
9 Citations
3 Claims
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1. A dielectric waveguide comprising:
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a dielectric waveguide having a slot of elongate shape through which a dielectric is exposed in a part of an electrically conductive film formed on a surface of the dielectric waveguide; a printed circuit board having a via hole of elongate shape formed therein at a position opposed to the slot; and a conductor plate having a first through-hole of elongate shape formed therein at a position opposed to the via hole, and a pair of second through-holes of elongate shape formed in a vicinity of the first through-hole, wherein the first through-hole and the second through-holes are in the same plane; wherein the first through-hole is fed with electric power while the second through-holes are not fed with electric power; wherein the dielectric waveguide, the printed circuit board and the conductor plate are joined together with aligning the slot, the via hole and the first through-hole with each other; wherein the printed circuit board has a conductor layer formed in positions facing to the second through-holes; wherein the pair of second through-holes are arranged point-symmetrically with each other with respect to the center of the first through-hole and are not aligned symmetrically with respect to a line orthogonal to a longitudinal direction of the first through-hole, and are rotated with respect to the longitudinal direction of the first through-hole; wherein a rotation angle of each of the pair of second through-holes is about 45°
with respect to the longitudinal direction of the first through-hole;wherein the second through-holes have a longitudinal length of about 1.4 times as long as a longitudinal length of the first through-hole; and wherein the dielectric waveguide radiates a circular polarized wave. - View Dependent Claims (2, 3)
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Specification