High-gain radiating element structure using multilayered metallic disk array
View Patent ↗Provided are a microstrip stack patch antenna using multilayered metallic disk array and a planar array antenna using the same. The microstrip stack patch antenna of the present research concentrates beam patterns and acquires a high gain characteristic by finitely depositing metallic disks in a bore-sight on a conventional microstrip stack patch radiator. The microstrip stack patch antenna includes: a microstrip stack patch directly connected to the feed line; and a mask conductor layer for improving side lobe and gain characteristics, the mask conductor being formed on the microstrip stack patch.
1. A microstrip stack patch antenna, comprising:
a microstrip stack patch including a feed line and a patch connected to the feed line electrically;
a mask conductor layer for improving side lobe and gain characteristics, the mask conductor layer being formed on the microstrip stack patch and including a mask conductor having an opening in the center;
a stack conductor layer including a dielectric layer formed on the mask conductor layer and a plurality of conductors formed on the dielectric layer; and
wherein the opening has a diameter of approximately one operating wavelength (λ 0 ), and the plurality of conductors are metallic disks, which are directional radiators.
2. The microstrip stack patch antenna as recited in claim 1 , wherein the mask conductor layer includes a dielectric film layer formed on the microstrip stack patch; and the mask conductor formed on the dielectric film layer.
3. The microstrip stack patch antenna as recited in claim 1 , wherein the metallic disks have space between the metallic disks and a diameter of between 0.25λ 0 and 0.35λ 0 , which is a value of a non-resonance structure.
4. The microstrip stack patch antenna as recited in claim 1 , wherein metallic disks are partially and periodically omitted.
5. The microstrip stack patch antenna as recited in claim 1 , wherein the conductors of the stack conductor layer have the same central position as the microstrip stack patch.
6. The microstrip stack patch antenna as recited in claim 1 , wherein the dielectric layer includes:
a gap layer formed on the mask conductor layer; and
a dielectric film formed on the gap layer.
7. The microstrip stack patch antenna as recited in claim 6 , wherein the gap layer is a dielectric foam layer.
8. The microstrip stack patch antenna as recited in claim 1 , wherein the patch of the microstrip stack patch, the mask conductor of the mask conductor layer, and the metallic disks of the stack conductor layer have the same center.
9. A planar array antenna, comprising:
microstrip stack patch radiators,
wherein, when the microstrip stack patch radiators are used to extend the planar array antenna, a distance d between the microstrip stack patch radiators in a direction orthogonal to an excitement or feeding direction is 0.9L e ≦d≦1.1L e , where
L
e
=
λ
0
2
π
10
D
20
and D(dBi) is directivity.
10. The planar array antenna as recited in claim 9 , wherein each of the microstrip stack patch radiators includes:
a microstrip stack patch radiator having a feed line and a patch connected to the feed line electrically;
a mask conductor layer for improving side lobe and gain characteristics, the mask conductor layer being formed on the microstrip stack patch; and
a stack conductor layer including a dielectric layer formed on the mask conductor layer and a conductor formed on the dielectric layer.