Compact antenna radiating element
A radiating element for an antenna comprises at least one radiating arm having a first electrically conductive arm segment extending in a first direction and a second electrically conductive arm segment extending in a second direction and electrically connected to the first arm segment.
1. A radiating element for an antenna, comprising:
a feed stalk; and
at least one radiating arm, the radiating arm having a first electrically conductive arm segment that is supported on the feed stalk and extends in a first direction and a second electrically conductive arm segment extending in a second direction from a radially outer end region of the first electrically conductive arm segment, the second direction being different from the first direction, and the first arm segment and the second arm segment being separately constructed, wherein the second arm segment is electrically connected to the first arm segment,
wherein the second arm segment is an electrically conductive segment of the feed stalk.
2. The radiating element according to claim 1 , wherein the total length of the combination of the first arm segment and the second arm segment is equivalent to a radiating arm length of a half-wave radiating element.
3. The radiating element according to claim 2 , wherein the radiating arm length of the half-wave radiating element is between 50% to 150% of a theoretical radiating arm length of the half-wave radiating element, wherein the theoretical radiating arm length of the half-wave radiating element equals one quarter of a wavelength corresponding to a center frequency of the operating frequency band of the half-wave radiating element.
4. The radiating element according to claim 1 , wherein the first arm segment extends above and parallel to a reflector plate, and the second arm segment extends downwardly from the first arm segment toward the reflector plate.
5. The radiating element according to claim 1 , wherein the second arm segment is soldered to the first arm segment.
6. The radiating element according to claim 1 , wherein the second arm segment is electrically connected to the first arm segment by a capacitive connection.
7. The radiating element according to claim 1 , wherein the second direction intersects the first direction.
8. The radiating element according to claim 7 , wherein the second direction and the first direction form an angle between 80 degrees and 100 degrees.
9. The radiating element according to claim 1 , wherein the first electrically conductive arm segment is on a first printed circuit board and the second electrically conductive arm segment is on a second printed circuit board that extends in a different plane than the first printed circuit board.
10. The radiating element according to claim 1 , wherein the feed stalk is electrically coupled to both a base of the first electrically conductive segment and to a distal end of the first electrically conductive segment through respective first and second electrical connections.
11. A radiating element for an antenna, comprising:
at least one radiating arm, the radiating arm having a first electrically conductive arm segment extending in a first direction and a second electrically conductive arm segment extending in a second direction from a radially outer end region of the first electrically conductive arm segment, the second direction being different from the first direction, and the first arm segment and the second arm segment being separately constructed, wherein the second arm segment is electrically connected to the first arm segment,
wherein the first arm segment is implemented in a first printed circuit board;
wherein the second arm segment is implemented in a second printed circuit board;
wherein the second printed circuit board is a feed stalk of the radiating element, and
wherein the second arm segment is an electrically conductive segment on the feed stalk that is electrically separated from a feed circuit of the feed stalk.
12. The radiating element according to claim 11 , wherein the electrically conductive segment comprises first and second electrically conductive segments formed on first and second surfaces of the feed stalk, and the electrically conductive segment further comprises at least one conductive element that extends through a dielectric substrate of the feed stalk to electrically connect the first and second electrically conductive segments.
13. A radiating element, comprising:
a feed stalk that includes a feed circuit;
a first center-fed radiating arm; and
a second center-fed radiating arm, the first and second center-fed radiating arms forming a dipole,
wherein the first radiating arm includes a first electrically conductive segment that is mounted on the feed stalk and a second electrically conductive segment that is implemented on the feed stalk and is electrically connected to the feed circuit through the first electrically conductive segment.
14. The radiating element according to claim 13 , wherein the second electrically conductive segment is soldered to the first electrically conductive segment.
15. The radiating element according to claim 14 , wherein the second electrically conductive segment is physically and electrically connected soldered adjacent a distal end of the first electrically conductive segment.
16. The radiating element according to claim 15 , wherein the total length of the combination of the first electrically conductive segment and the second electrically conductive segment is equivalent to a radiating arm length of a half-wave radiating element.
17. The radiating element according to claim 13 , wherein the first electrically conductive arm segment is on a first printed circuit board and the feed stalk comprises a second printed circuit board that extends in a different plane than the first printed circuit board.
18. The radiating element according to claim 13 , wherein the feed stalk is electrically coupled to both a base of the first electrically conductive segment and to a distal end of the first electrically conductive segment through respective first and second electrical connections.