Phase lag cell and antenna including same
A phase lag cell and an antenna including the same are disclosed. A phase lag cell according to one embodiment of the present invention comprises: a plane reflector; a substrate spaced apart and positioned at a predetermined distance from the reflector; and a phase lag circuit formed at one side of the substrate such that L-shaped patterns are formed to be vertically and horizontally symmetrical around a cross-shaped slot, and a stub having a predetermined length is extended from the end of each L-shaped pattern.
1. A phase lag cell comprising:
a reflecting plate having a planar shape;
a substrate positioned to be spaced apart from the reflecting plate by a predetermined distance; and
a phase lag circuit formed on a surface of the substrate, the whole phase lag circuit having a shape as a whole in which L-shaped patterns formed on the surface are formed to be vertically and horizontally symmetrical around a cross-shaped slot, and stubs having a predetermined length are formed on the surface of the substrate to extend from ends of the L-shaped patterns.
2. The phase lag cell of claim 1 , wherein the length of the stub is determined according to a degree of delayed phase of a radio wave reflected by the reflecting plate.
3. The phase lag cell of claim 1 , wherein the phase lag circuit further includes second stubs formed on the other surface of the substrate to have a predetermined length and connected to ends of the stubs through via holes of the substrate.
4. The phase lag cell of claim 1 , further comprising a separating object which separates the reflecting plate from the substrate by a predetermined distance.
5. An antenna comprising at least two of the phase lag cells according to claim 1 .
6. An antenna comprising at least two of the phase lag cells according to claim 2 .
7. An antenna comprising at least two of the phase lag cells according to claim 3 .
8. An antenna comprising at least two of the phase lag cells according to claim 4 .
9. The phase lag cell of claim 4 , wherein the separating object is air.
10. The phase lag cell of claim 9 , wherein the separating object is selected from the group consisting of a honeycomb, a foam and a Jig.
11. The phase lag cell of claim 1 , wherein, on the reflecting plate, only one substrate is formed.
12. The phase lag cell of claim 1 , wherein each of the L-shaped patterns is a continuously connected shape.
13. An antenna comprising:
a reflecting plate having a planar shape;
a substrate positioned to be spaced apart from the reflecting plate by a predetermined distance; and
a phase lag circuit formed on a surface of the substrate, the whole phase lag circuit having a shape as a whole in which L-shaped patterns formed on the surface are formed to be vertically and horizontally symmetrical around a cross-shaped slot, and stubs having a predetermined length are formed on the surface of the substrate to extend from ends of the L-shaped patterns.
14. The antenna of claim 13 , wherein the plurality of phase lag circuits are spaced apart from each other by a predetermined distance on the one surface of the substrate.
15. The antenna of claim 13 , wherein the length of the stub is determined according to a degree of delayed phase of a radio wave reflected by the reflecting plate.
16. The antenna of claim 13 , wherein at least one of the plurality of phase lag circuits further includes second stubs which are formed to have a predetermined length on the other surface of the substrate and are connected to ends of the stubs through via holes of the substrate.
17. The antenna of claim 13 , further comprising a separating object which separates the reflecting plate from the substrate by a predetermined distance.
18. The antenna of claim 17 , wherein the separating object is air.
19. The antenna of claim 17 , wherein the separating object is selected from the group consisting of a honeycomb, a foam and a Jig.
20. The antenna of claim 13 , wherein, on the reflecting plate, only one substrate is formed.