Metamaterial structure antenna and metamaterial structure array
In various embodiments, a metamaterial structure antenna may comprise: a feed line for feeding a signal; a ground plane comprising a cross-shaped aperture forming circular polarization on the basis of a magnetic field induced by the fed signal; and a patch plane formed parallel to the ground plane which emits electromagnetic waves on the basis of the circular polarization.
1. A meta-structure antenna comprising:
a feed line configured to feed a signal;
a ground plane including a cross-shaped aperture, the ground plane being configured to form circularly polarized waves based on a magnetic field induced by the signal;
a patch plane formed parallel to the ground plane, the patch plane being configured to radiate electromagnetic waves based on the circularly polarized waves;
a plurality of vias formed between the ground plane and the patch plane to produce zeroth-order resonance in the meta-structure antenna; and
a superstrate a first cover and a second cover spaced apart from the first cover by a first distance,
wherein the first cover includes a first pattern, and the second cover includes a second pattern facing in a direction which is equal to a direction in which the first pattern faces.
2. The meta-structure antenna of claim 1 , wherein, when the patch plane is divided into a plurality of partial patch planes, numbers of one or more vias formed between respective partial patch planes and the ground plane are equal to each other.
3. The meta-structure antenna of claim 1 , wherein the superstrate configured to radiate electromagnetic waves improved in directional gain by adjusting a phase and an amplitude of the radiated electromagnetic waves.
4. The meta-structure antenna of claim 3 , wherein the first pattern and the second pattern, respectively, adjust the phase and the amplitude of the radiated electromagnetic waves.
5. The meta-structure antenna of claim 4 , wherein the first pattern and the second pattern have a circular shape.
6. The meta-structure antenna of claim 4 , wherein sizes of the first pattern and the second pattern are determined in consideration of a magnitude of a reflection coefficient with respect to the superstrate and a phase of reflected waves.
7. The meta-structure antenna of claim 4 , wherein sizes of the first pattern and the second pattern are determined in consideration of a magnitude of a transmission coefficient with respect to the superstrate and a phase of transmitted waves.
8. The meta-structure antenna of claim 3 , wherein the first distance between the first cover and the second cover is determined in consideration of a magnitude of a reflection coefficient with respect to the superstrate and a phase of reflected waves.
9. The meta-structure antenna of claim 3 , wherein the first distance between the first cover and the second cover is determined in consideration of a magnitude of a transmission coefficient with respect to the superstrate and a phase of transmitted waves.
10. The meta-structure antenna of claim 1 , wherein the patch plane includes a cross-shaped gap.
11. The meta-structure antenna of claim 10 , wherein the cross-shaped gap in the patch plane is positioned to correspond to the cross-shaped aperture in the ground plane.
12. The meta-structure antenna of claim 1 , wherein the cross-shaped aperture includes a plurality of slits orthogonal to each other.
13. The meta-structure antenna of claim 12 , wherein the plurality of slits have different lengths such that the circularly polarized waves are formed.