Multi-feed antenna

Abstract

The disclosure provides a multi-feed antenna, comprising a first conductor layer, a second conductor layer and a plurality of slit structures. The second conductor layer is spaced apart from the first conductor layer at a first interval. The second conductor layer has a center slot structure. The plurality of slit structures are all formed at the second conductor layer, and each slit structure has a first end connecting with the center slot structure and each has a second end respectively extending to different side edges of the second conductor layer. The plurality of slit structures make the second conductor layer forming a plurality of radiating conductor plate. The total number of the slit structures equals to the total number of the radiating conductor plates. Each of the radiating plates is electrically connected or coupled to at least one signal source. Each signal source respectively excites the second conductor layer to generate at least one resonant mode. The plurality of resonant modes cover at least one identical first communication band.

Claims

1. A multi-feed antenna, comprising: A first conductor layer; A second conductor layer having a first spacing between it and the first conductor layer, the second conductor layer having a central slot structure; and a plurality of slot structures, all located on the second conductor layer, each of the plurality of slot structures having a first end connected to the central slot structure and a second end extending to different edges of the second conductor layer, the plurality of slot structures causing the second conductor layer to form a plurality of radiating conductor plates, the number of slot structures being the same as the number of radiating conductor plates, and each radiating conductor plate being electrically connected or electrically coupled to at least one signal source, each of the signal sources exciting the second conductor layer to generate at least one resonant mode, the plurality of resonant modes covering at least one identical first communication frequency band, wherein the area of ​​the central slot structure is between 0.01 times and 0.39 times the area of ​​the second conductor layer.

2. The multi-feed antenna as described in claim 1, wherein, Each of these radiating conductor plates is electrically connected to two signal sources.

3. The multi-feed antenna as described in claim 1, wherein, The second end of the slotted structure is an open end.

4. The multi-feed antenna as described in claim 1, wherein, The second end of the slotted structure is a closed end.

5. The multi-feed antenna as described in claim 1, wherein, The slot structure has a slot length from the first end to the second end, the distance of which is between 0.1 wavelength and 0.49 wavelength of the lowest operating frequency of the first communication band.

6. The multi-feed antenna as described in claim 1, wherein, The central slot structure has a first grounding conductor structure that is electrically connected to the first conductor layer.

7. The multi-feed antenna as described in claim 6, wherein, The first grounding conductor structure is parallel to the second conductor layer, and the first grounding conductor structure is a square, circular, rhomboid, or rectangular conductor sheet.

8. The multi-feed antenna as described in claim 1, wherein, The slot structure has a second grounding conductor structure that is electrically connected to the first conductor layer.

9. The multi-feed antenna as described in claim 8, wherein, The second grounding conductor structure is perpendicular to the first conductor layer, and the second grounding conductor structure is a rectangular or square conductor sheet or a plurality of conductor pillars.

10. The multi-feed antenna as described in claim 1, wherein, There is a coupling gap between the signal source and the radiating conductor plate.

11. The multi-feed antenna as described in claim 10, wherein, The coupling distance is between 0.003 and 0.095 wavelengths of the lowest operating frequency of the first communication band.

12. The multi-feed antenna as described in claim 1, wherein, The distance of the first gap is between 0.01 wavelength and 0.336 wavelength of the lowest operating frequency of the first communication band.

13. The multi-feed antenna as described in claim 1, wherein, The area of ​​the second conductor layer is between 0.25 times the square of the wavelength of the lowest operating frequency of the first communication band and 0.99 times the square of the wavelength of the lowest operating frequency of the first communication band.

14. The multi-feed antenna as described in claim 1, wherein, The number of slotted structures is even, and the number of slotted structures is less than or equal to 6.

15. The multi-feed antenna as described in claim 1, wherein, The radiating conductor plate has a third grounding conductor structure.

16. The multi-feed antenna as described in claim 15, wherein, One end of the third grounding conductor structure is electrically connected to the radiating conductor plate, and the other end is electrically connected to the first conductor layer. The third grounding conductor structure may be a conductor post, a conductor sheet, or a plurality of conductor post structures, and is located between the first conductor layer and the second conductor layer.

17. The multi-feed antenna as described in claim 1, wherein, The second conductor layer is formed on a dielectric layer.

18. The multi-feed antenna as described in claim 1, wherein, The signal source can be a transmission line, impedance matching circuit, amplifier circuit, feed network, switching circuit, connector element, filter circuit, integrated circuit chip or RF front-end module.

19. The multi-feed antenna as described in claim 1, wherein, This multi-feed antenna can be configured as a single set or multiple sets for use in multi-input multi-output antenna systems, field-switching antenna systems, or beamforming antenna systems, or to improve radiation gain through transmission lines or RF feed network electrical connections.