US-20260128531-A1 - ANTENNA SYSTEM

Abstract

An antenna system includes a first radiation source, a second radiation source, a reflection apparatus, and a first transmission apparatus. A direction of an emitting port of the first radiation source and a direction of an emitting port of the second radiation source are arranged back to back along a same axis. A reflective surface of the reflection apparatus and the first transmission apparatus are arranged opposite to each other. The reflection apparatus is configured to reflect the first signal emitted by the first radiation source to a ring-shaped transmission area of the first transmission apparatus by using the reflective surface. The first transmission apparatus is configured to radiate, through the ring-shaped transmission area, the first signal reflected by the reflective surface. The second radiation source is configured to emit a second signal through an area formed based on an inner diameter of the ring-shaped transmission area.

Inventors

• Ning Yang
• CHUANHUI MA
• Bo Yang
• Meng Cai

Assignees

• HUAWEI TECHNOLOGIES CO., LTD.

Dates

Publication Date

20260507

Application Date

20251219

Priority Date

20230621

Claims (20)

1. 1 . An antenna system, comprising: a first radiation source, a second radiation source, a reflection apparatus, and a first transmission apparatus, wherein a direction of an emitting port of the first radiation source and a direction of an emitting port of the second radiation source are arranged back to back along a same axis, a reflective surface of the reflection apparatus and the first transmission apparatus are arranged opposite to each other, the emitting port of the first radiation source points to the reflective surface of the reflection apparatus, and the first transmission apparatus has a ring-shaped transmission area, wherein the first radiation source is configured to emit a first signal to the reflective surface of the reflection apparatus; the reflection apparatus is configured to reflect the first signal to the ring-shaped transmission area of the first transmission apparatus by using the reflective surface; the first transmission apparatus is configured to radiate, out of the antenna system through the ring-shaped transmission area, the first signal reflected by the reflective surface; and the second radiation source is configured to emit a second signal, wherein the second signal is radiated out of the antenna system through an area formed based on an inner diameter of the ring-shaped transmission area.
2. 2 . The antenna system according to claim 1 , wherein the first radiation source is a microwave radiation source, the first signal is a microwave, the second radiation source is a free space optical radiation source, and the second signal is wireless light.
3. 3 . The antenna system according to claim 1 , wherein the reflective surface is a surface of a solid of revolution formed by rotating a first curve with the axis as a rotation center, and the emitting port of the first radiation source is located at a focus of the first curve.
4. 4 . The antenna system according to claim 3 , wherein the first curve is a part of an elliptic curve.
5. 5 . The antenna system according to claim 4 , wherein the emitting port of the first radiation source is located at a first focus of the elliptic curve, and the first signal emitted by the first radiation source passes through a second focus of the elliptic curve after being reflected by the reflective surface.
6. 6 . The antenna system according to claim 5 , wherein the first transmission apparatus is configured to project the first signal reflected by the reflective surface into a collimated signal, and a focus of the first transmission apparatus coincides with the second focus of the elliptic curve.
7. 7 . The antenna system according to claim 1 , wherein the antenna system further comprises a second transmission apparatus, the second transmission apparatus is located in the area formed based on the inner diameter of the first transmission apparatus, the emitting port of the second radiation source is located at a focus of the second transmission apparatus, and the second transmission apparatus is configured to project the second signal emitted by the second radiation source into a collimated signal.
8. 8 . The antenna system according to claim 1 , wherein the antenna system further comprises a first support apparatus, the first support apparatus is configured to support the reflection apparatus and the first transmission apparatus respectively by using two end surfaces that are arranged opposite to each other, the reflection apparatus is located on a first end surface in the two end surfaces that are arranged opposite to each other, the first transmission apparatus is located on a second end surface in the two end surfaces that are arranged opposite to each other, and a periphery of the first transmission apparatus is connected to a periphery of the second end surface.
9. 9 . The antenna system according to claim 8 , wherein the antenna system further comprises a second support apparatus, and the second support apparatus is configured to support the first radiation source and the second radiation source to be coaxial.
10. 10 . The antenna system according to claim 8 , wherein the first support apparatus is a cylindrical housing, a bowl-shaped housing, or a disc-shaped housing.
11. 11 . The antenna system according to claim 1 , wherein the first transmission apparatus comprises any one of a dielectric lens, a planar lens, or a metamaterial lens.
12. 12 . The antenna system according to claim 7 , wherein the second transmission apparatus comprises any one of a plano-convex lens, a Cassegrain lens, or a Gregorian lens.
13. 13 . The antenna system according to claim 1 , wherein both the first radiation source and the second radiation source are microwave radiation sources, and both the first signal and the second signal are microwaves.
14. 14 . The antenna system according to claim 13 , wherein a wavelength of the first signal is different from a wavelength of the second signal.
15. 15 . The antenna system according to claim 14 , wherein the first signal and the second signal belong to different frequency bands.
16. 16 . The antenna system according to claim 14 , wherein the wavelength of the first signal is greater than the wavelength of the second signal.
17. 17 . The antenna system according to claim 1 , wherein the first signal and the second signal are radiated in a same aperture.
18. 18 . The antenna system according to claim 17 , wherein the first signal and the second signal have different radiation paths.
19. 19 . The antenna system according to claim 1 , wherein the first radiation source, the second radiation source, the reflection apparatus, and the first transmission apparatus are coaxial.
20. 20 . The antenna system according to claim 1 , wherein the first signal emitted by the first radiation source entirely arrives in the ring-shaped transmission area of the first transmission apparatus.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Application No. PCT/CN2024/092140, filed on May 10, 2024, which claims priority to Chinese Patent Application No. 202310743396.8, filed on June 21, 2023. The disclosures of the aforementioned applications are hereby incorporated by reference in their entireties. TECHNICAL FIELD Embodiments of this application relate to the communication field, and in particular, to an antenna system. BACKGROUND With rapid development of wireless communication technologies, data traffic at an access network side is increasing. Wireless transfer channels between an access network and an aggregation network need further capacity expansion to meet continuous growth of data services, and advantages of large bandwidths of high frequency bands are increasingly recognized. Therefore, high frequency bands represented by millimeter waves are gradually becoming used for microwave backhaul. However, although millimeter waves have the advantage of large bandwidths, millimeter waves also face greater atmospheric attenuation, which may affect communication distances of backhaul links. Therefore, dual-emitting-port antennas may be used to transfer different signals, improving communication efficiency or capacity, thereby improving communication performance of long-range wireless backhaul. However, in conventional technologies, signals emitted from two emitting ports of a dual-emitting-port antenna may be coupled, and poorly isolated. This may affect radiation efficiency of the signals generated by the emitting ports, and may further affect radiation efficiency of the antenna system. SUMMARY This application provides an antenna system, to radiate, in a same aperture and with mutually independent radiation paths, signals from different emitting ports, thereby improving radiation efficiency of the antenna system. According to a first aspect, this application provides an antenna system. The antenna system includes a first radiation source, a second radiation source, a reflection apparatus, and a first transmission apparatus. A direction of an emitting port of the first radiation source and a direction of an emitting port of the second radiation source are arranged back to back along a same axis, a reflective surface of the reflection apparatus and the first transmission apparatus are arranged opposite to each other, the emitting port of the first radiation source points to the reflective surface of the reflection apparatus, and the first transmission apparatus has a ring-shaped transmission area. During use, the first radiation source is configured to emit a first signal to the reflective surface of the reflection apparatus. The reflection apparatus is configured to reflect the first signal to the ring-shaped transmission area of the first transmission apparatus by using the reflective surface. The first transmission apparatus is configured to radiate, out of the antenna system through the ring-shaped transmission area, the first signal reflected by the reflective surface. The second radiation source is configured to emit a second signal, where the second signal is radiated out of the antenna system through an area formed based on an inner diameter of the ring-shaped transmission area. In this application, the direction of the emitting port of the first radiation source and the direction of the emitting port of the second radiation source are arranged back to back along the same axis, and the two radiation sources perform emission in directions away from each other along the same axis. After being reflected by the reflection apparatus, the first signal emitted by the first radiation source is transmitted out of the antenna system through the ring-shaped transmission area of the first transmission apparatus. In addition, the second radiation source emits the second signal in a direction opposite to the direction of the emitting port of the first radiation source, and radiates the second signal out of the antenna system through the area formed based on the inner diameter of the ring-shaped transmission area. Therefore, the first signal and the second signal that are finally radiated from the antenna system are radiated in a same aperture and with mutually independent radiation paths. This helps avoid strong coupling between the signals (the first signal and the second signal) emitted from different radiation ports, achieves high isolation, and helps improve radiation efficiency of the signals (the first signal and the second signal) generated by different radiation sources. In some embodiments, that a wavelength of the first signal is different from a wavelength of the second signal may be that the first signal and the second signal respectively belong to different frequency bands. When the wavelength of the first signal is different from the wavelength of the second signal or the first signal and the second signal respectively belong to different frequen