Multilayer patch antenna
Presented is a multilayer patch antenna which prevents the occurrence of parasitic resonance by having a metal layer formed on the inner wall of a thru-hole, among a plurality of thru-holes formed in a lower patch antenna, penetrated by a power feeding pin of an upper patch antenna. The multilayer patch antenna presented herein comprises: an upper patch antenna having a first thru-hole formed therein; a lower patch antenna having a second thru-hole and a third thru-hole formed therein, away from each other; a first upper power feeding pin protruding under the lower patch antenna by penetrating the first thru-hole and the second thru-hole; a lower power feeding pin protruding under the lower patch antenna by penetrating the third thru-hole; and a metal layer formed inside the second thru-hole.
1. A multilayer patch antenna, comprising:
an upper patch antenna having a first thru-hole formed therein;
a lower patch antenna having a second thru-hole and a third thru-hole formed to be spaced apart from each other;
a first upper power feeding pin protruding under the lower patch antenna by penetrating the first thru-hole and the second thru-hole;
a lower power feeding pin protruding under the lower patch antenna by penetrating the third thru-hole; and
a first metal layer formed on an inner wall surface of the second thru-hole,
wherein the upper patch antenna is further formed with a fourth thru-hole spaced apart from the first thru-hole,
wherein the lower patch antenna is further formed with a fifth thru-hole spaced apart from the second thru-hole and the third thru-hole,
wherein the second thru-hole penetrates an upper radiation patch, a base substrate, and a lower radiation patch of the lower patch antenna, thereby preventing occurrence of parasitic resonance, and
wherein the multilayer patch antenna further comprises a second upper power feeding pin penetrating the fourth thru-hole and the fifth thru-hole to be protruded downwards from the lower patch antenna.
2. The multilayer patch antenna of claim 1 ,
wherein the first metal layer is connected to the upper radiation patch and the lower radiation patch.
3. The multilayer patch antenna of claim 1 ,
wherein the first metal layer is formed on the inner wall surface of the second thru-hole formed in the base substrate, the upper radiation patch, and the lower radiation patch.
4. The multilayer patch antenna of claim 1 ,
wherein the first metal layer is disposed to be spaced apart from an outer circumference of the first upper power feeding pin penetrating the second thru-hole.
5. The multilayer patch antenna of claim 1 ,
further comprising a second metal layer formed on an inner wall surface of the fifth thru-hole.
6. The multilayer patch antenna of claim 5 ,
wherein the fifth thru-hole penetrates an upper radiation patch, a base substrate, and a lower radiation patch of the lower patch antenna, and
wherein the second metal layer is formed on the inner wall surface of the fifth thru-hole formed in the base substrate.
7. The multilayer patch antenna of claim 6 ,
wherein the second metal layer is connected to the upper radiation patch and the lower radiation patch.
8. The multilayer patch antenna of claim 5 ,
wherein the fifth thru-hole penetrates an upper radiation patch, a base substrate, and a lower radiation patch of the lower patch antenna, and
wherein the second metal layer is formed on the inner wall surface of the fifth thru-hole formed in the base substrate, the upper radiation patch, and the lower radiation patch.
9. The multilayer patch antenna of claim 5 ,
wherein the second metal layer is disposed to be spaced apart from an outer circumference of the second upper power feeding pin penetrating the fifth thru-hole.