All-metal vivaldi antenna having band notch and operation frequency tunable characteristics and array antenna including the same
An all-metal vivaldi antenna includes a ground plate, an antenna conductor that includes two radiators positioned on the ground plate and facing each other, a resonator that is formed by removing a portion of a connection part between the antenna conductor and the ground plate and shares one side with the ground plate, a tuning post that is formed in a column structure extending from the ground plate toward an inside of the resonator, and a tuning cap in a form extending therefrom.
1. An all-metal vivaldi antenna, comprising:
a ground plate;
an antenna conductor that includes two radiators positioned on the ground plate and facing each other;
a resonator that is formed in each of the two radiators by removing a portion of a connection part between the antenna conductor and the ground plate and shares one side with the ground plate; and
a tuning post that is formed in each of the two resonators in a column structure extending from the ground plate with a free end toward an inside of the resonator.
2. The all-metal vivaldi antenna of claim 1 , wherein:
band notch and operation frequency band characteristics are adjusted by positioning the tuning post inside the resonator.
3. The all-metal vivaldi antenna of claim 1 , wherein:
a band notch and operation frequency band characteristics are adjusted by adjusting a length of the tuning post.
4. The all-metal vivaldi antenna of claim 1 , wherein:
a band notch and operation frequency band characteristics are adjusted by adjusting a width of the tuning post.
5. The all-metal vivaldi antenna of claim 1 , wherein:
a band notch and operation frequency band characteristics are adjusted by adjusting a thickness of the tuning post.
6. The all-metal vivaldi antenna of claim 1 , wherein:
a band notch and operation frequency band characteristics are adjusted by adjusting a position of the tuning post inside the resonator.
7. The all-metal vivaldi antenna of claim 1 , further comprising:
a tuning cap that is formed in a structure extending from an end of the tuning post in a direction perpendicular to an extending direction of the tuning post or in an arbitrary angular direction.
8. The all-metal vivaldi antenna of claim 7 , wherein:
a band notch and operation frequency band characteristics are adjusted by adjusting a length of the tuning cap.
9. The all-metal vivaldi antenna of claim 7 , wherein:
a band notch and operation frequency band characteristics are adjusted by adjusting a width of the tuning cap.
10. The all-metal vivaldi antenna of claim 7 , wherein:
a band notch and operation frequency band characteristics are adjusted by adjusting a thickness of the tuning cap.
11. An array antenna, comprising:
a ground plate; and
a plurality of all-metal vivaldi antennas that are arranged in one direction or at a right angle direction on the ground plate,
wherein each of the plurality of all-metal vivaldi antennas includes:
an antenna conductor that includes two radiators positioned on the ground plate and facing each other;
a resonator that is formed in each of the two radiators by removing a portion of a connection part between the antenna conductor and the ground plate and shares one side with the ground plate, and
at least one of the plurality of all-metal vivaldi antennas
includes a tuning post that is formed in each of the two resonators in a column structure extending from the ground plate with a free end toward an inside of the resonator.
12. The array antenna of claim 11 , wherein:
band notch and operation frequency band characteristics are adjusted by positioning the tuning post inside the resonator.
13. The array antenna of claim 11 , wherein:
a band notch and operation frequency band characteristics are adjusted by adjusting a length of the tuning post.
14. The array antenna of claim 11 , wherein:
the a band notch and operation frequency band characteristics are adjusted by adjusting a width of the tuning post.
15. The array antenna of claim 11 , wherein:
band notch and operation frequency band characteristics are adjusted by adjusting a thickness of the tuning post.
16. The array antenna of claim 11 , wherein:
a band notch and operation frequency band characteristics are adjusted by adjusting a position of the tuning post inside the resonator.
17. The array antenna of claim 11 , wherein:
at least one of the plurality of all-metal vivaldi antennas
further includes a tuning cap that is formed in a structure extending from an end of the tuning post in a direction perpendicular to an extending direction of the tuning post or in an arbitrary angular direction.
18. The array antenna of claim 17 , wherein:
a band notch and operation frequency band characteristics are adjusted by adjusting a length of the tuning cap.
19. The array antenna of claim 17 , wherein:
a band notch and operation frequency band characteristics are adjusted by adjusting a width of the tuning cap.
20. The array antenna of claim 17 , wherein:
a band notch and operation frequency band characteristics are adjusted by adjusting a thickness of the tuning cap.