J-pole antenna
View Patent ↗A J-Pole antenna disclosed including: shunt segment extending out of the plane of the J-Pole antenna. A shunt segment extending out of the plane of the J-pole antenna aids in attaching the antenna to a connector and allowing for a reduction in the size of the antenna and connector. The shunt segment also makes the antenna shorter while preserving the same gain and impedance performance as a conventional J-Pole antenna. A connector plate and connector may be used with the antenna having the shunt segment extending out of the plane of the J-Pole antenna. A protective enclosure may be used with the J-Pole antenna and allowing a radiating antenna segment of the J-Pole antenna to extend from the protective enclosure.
1. An antenna, comprising:
a connector including a feed line and a ground line, and
an antenna segment formed from a single conductive material and securely connected to the connector, the antenna segment formed to include:
a radiating antenna segment, the radiating antenna segment electrically connected to the feed line at a feed line connection point,
a non-radiating matching segment substantially parallel to the radiating antenna segment, the non-radiating matching segment substantially shorter than the radiating segment, the non-radiating matching segment electrically connected to the ground line at a ground line connection point, and
a shunt segment electrically connected to the non-radiating matching segment, the shunt segment formed between the feed line connection point and the ground line connection point,
wherein the shunt segment, the radiating antenna segment, and the non-radiating matching segment are all positioned on a common side of the feed line connection point.
2. The antenna of claim 1 , wherein the shunt segment is formed as a bend in the conductive material.
3. The antenna of claim 1 , further comprising a connector plate, providing the ground, and that provides a secured opening for the feedline connector, but electrically isolated from the feedline.
4. The antenna of claim 3 , wherein the connector is a coaxial type connector.
5. The antenna of claim 4 , wherein the shunt segment is formed as bend in the conductive material extending away from the connector plate.
6. The antenna of claim 5 , wherein the shunt segment forms a loop which is substantially parallel to the radiating antenna segment and the matching segment.
7. The antenna of claim 3 , further comprising an antenna enclosure attached to the connector plate and formed to enclose the matching segment, the antenna enclosure including a radiating antenna segment opening positioned to allow the radiating antenna segment to extend from the antenna enclosure.
8. The antenna of claim 7 , wherein the radiating antenna segment is a removable segment.
9. The antenna of claim 1 , wherein the radiating antenna segment is a telescoping segment.
10. The antenna of claim 1 , further comprising an electronic device enclosure attached to the antenna and formed to enclose the matching segment and an electronic device, the electronic device enclosure including a radiating antenna segment opening positioned to allow the radiating antenna segment to extend from the electronic device enclosure.
11. The antenna of claim 10 , wherein the radiating antenna segment is a foldable unit and includes a pivot joint securely attached between an upper radiating segment and a lower matching antenna segment such that the upper radiating segment may be moved between a position in line with the lower matching segment and a position out of line with the lower radiating segment.
12. The antenna of claim 10 , wherein the radiating antenna segment includes a removable segment.
13. The antenna of claim 1 , wherein the antenna is for use as a radiating element in a fixed RF communication network.
14. The antenna of claim 1 , wherein the antenna is for use as a radiating element in a wireless communication network.
15. A J-Pole antenna comprising:
a radiating antenna segment;
a feed line connector for connecting the radiating antenna segment to a feed line;
a matching segment having an arm parallel to the radiating antenna segment;
a ground line connector for connecting the matching segment to a ground line; and
a shunt segment connected to the radiating antenna segment and the matching segment at the feed line connector and the ground line connector, respectively, wherein at least a portion of the shunt segment extends away from the plane formed by the radiating antenna segment and the matching segment, and forms a loop parallel to the plane formed by the radiating antenna segment and the matching segment.
16. The J-Pole antenna of claim 15 , wherein the J-Pole antenna is formed from a single piece of conductive tubing.
17. The J-Pole antenna of claim 15 , wherein the J-Pole antenna is for use as a radiating element in a fixed RF communication network.
18. The J-Pole antenna of claim 15 , wherein the J-Pole antenna is for use as a radiating element in a wireless communication network.
19. The J-Pole antenna of claim 15 , wherein the shunt segment, the radiating antenna segment, and the matching segment are all positioned on a common side of the feed line connector and the ground line connector.
20. An antenna, comprising:
a connector including a feed line and a ground line, and
an antenna segment formed from a single conductive material and securely connected to the connector, the antenna segment formed to include:
a radiating antenna segment, the radiating antenna segment electrically connected to the feed line at a feed line connection point,
a non-radiating matching segment substantially parallel to the radiating antenna segment, the non-radiating matching segment substantially shorter than the radiating segment, the non-radiating matching segment electrically connected to the ground line at a ground line connection point,
a shunt segment electrically connected to the non-radiating matching segment, the shunt segment formed between the feed line connection point and the ground line connection point, and
a connector plate, providing the ground;
wherein the shunt segment is formed as bend in the conductive material extending away from the connector plate.
21. The antenna of claim 20 , wherein the shunt segment, the radiating antenna segment, and the non-radiating matching segment are all positioned on a common side of the feed line connection point.