Antenna system

Patent metadata

Field	Value
Publication number	US-12451602-B2
Application number	US-202318319426-A
Country	US
Kind code	B2
Filing date	May 17, 2023
Priority date	Nov 24, 2020
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

This disclosure provides an antenna system to improve communication flexibility. The antenna system includes a radio frequency unit, a divider, a first modulator, a second modulator, a first antenna and a second antenna. The radio frequency unit is configured to generate a first radio frequency signal. The divider is configured to divide the first radio frequency signal into first and second radio frequency sub-signals. The first modulator is configured to adjust a first electrical downtilt of the first radio frequency sub-signal and send the adjusted first radio frequency sub-signal to the first antenna for transmission. The second modulator is configured to adjust a second electrical downtilt of the second radio frequency sub-signal and send the adjusted second readio frequency sub-signal to the second antenna for transmission. The adjustion is based on a target downtilt of the first radio frequency signal and a mechanical downtilt of the first or second antenna.

First claim

What is claimed is:

1. An antenna system, comprising:
a first antenna,
a second antenna,
a radio frequency unit configured to generate a first radio frequency signal;
a divider configured to divide the first radio frequency signal into a first radio frequency sub-signal and a second radio frequency sub-signal;
a first modulator configured to adjust a first electrical downtilt of the first radio frequency sub-signal and output the adjusted first radio frequency sub-signal to the first antenna for transmission, wherein the first electrical downtilt is adjusted based on a target downtilt and a first mechanical downtilt of the first antenna; and
a second modulator configured to adjust a second electrical downtilt of the second radio frequency sub-signal and output the adjusted second radio frequency sub-signal to the second antenna for transmission, wherein the second electrical downtilt is adjusted based on the target downtilt and a second mechanical downtilt of the second antenna, wherein the target downtilt is a same target downtilt of the first antenna and the second antenna.

2. The antenna system of claim 1 , further comprising at least one of:
a third antenna, disposed on the first antenna, wherein the third antenna is an active antenna and the first antenna is a passive antenna; or
a fourth antenna, disposed on the second antenna, wherein the fourth antenna is an active antenna and the second antenna is a passive antenna.

3. The antenna system of claim 1 , wherein the first modulator is configured to obtain the target downtilt corresponding to the first radio frequency signal and the first mechanical downtilt of the first antenna, and adjust the first electrical downtilt based on the target downtilt corresponding to the first radio frequency signal and the first mechanical downtilt of the first antenna; wherein the second modulator is configured to obtain the target downtilt corresponding to the first radio frequency signal and the second mechanical downtilt of the second antenna, and adjust the second electrical downtilt based on the target downtilt corresponding to the first radio frequency signal and the second mechanical downtilt of the second antenna.

4. The antenna system of claim 3 , further comprising one or more rotation angle sensors configured to detect at least one of the first mechanical downtilt or the second mechanical downtilt and send indication information of the at least one of the first mechanical downtilt or the second mechanical downtilt to a corresponding modulator of the first modulator and the second modulator.

5. The antenna system of claim 1 , the antenna system further comprising a first controller and a second controller, wherein
the first controller is configured to control, based on the target downtilt corresponding to the first radio frequency signal and the first mechanical downtilt, the first modulator to adjust the first radio frequency sub-signal; and
the second controller is configured to control, based on the target downtilt corresponding to the first radio frequency signal and the second mechanical downtilt, the second modulator to adjust the second radio frequency sub-signal.

6. The antenna system of claim 5 , the antenna system further comprising at least one of a first rotation angle sensor or a second rotation angle sensor, wherein
the first rotation angle sensor is communicatively connected to the first controller and configured to detect the first mechanical downtilt and send indication information of the first mechanical downtilt to the first controller; and
the second rotation angle sensor is communicatively connected to the second controller and configured to detect the second mechanical downtilt and send indication information of the second mechanical downtilt to the second controller.

7. The antenna system of claim 1 , the antenna system further comprising a third modulator coupled to the divider, the first modulator and the second modulator, wherein
the third modulator is configured to receive the first radio frequency sub-signal and the second radio frequency sub-signal, and perform processing on a target radio frequency sub-signal, to adjust a phase difference P between the first radio frequency sub-signal and the second radio frequency sub-signal, wherein the target radio frequency sub-signal is at least one of the first radio frequency sub-signal and the second radio frequency sub-signal.

8. The antenna system of claim 7 , wherein the phase difference P is determined based on first information including at least one of the following:
the target downtilt, a wavelength λ of the first radio frequency signal, the first mechanical downtilt φ1, the second mechanical downtilt φ2, the first electrical downtilt θ1, the second electrical downtilt θ2, a length M of a target antenna, a distance L between the first antenna and the second antenna in a gravity direction when both the first mechanical downtilt and the second mechanical downtilt are 0, or a distance N between the first antenna and the second antenna in a horizontal direction when both the first mechanical downtilt and the second mechanical downtilt are 0.

9. The antenna system of claim 7 , wherein the first antenna and the second antenna are arranged along the gravity direction and the second antenna is a lower antenna in the gravity direction,
the target radio frequency sub-signal is the second radio frequency sub-signal and sent by the second antenna.

10. The antenna system of claim 7 , wherein the phase difference P is determined based on at least the following:
the first mechanical downtilt φ1, the second mechanical downtilt φ2, the first electrical downtilt θ1, and the second electrical downtilt θ2.

11. An antenna system, comprising a first antenna, a second antenna, a radio frequency unit, a first modulator, and a second modulator, wherein the first antenna is capable of rotating around a first rotation axis to adjust a first mechanical downtilt of the first antenna, and the second antenna is capable of rotating around a second rotation axis to adjust a second mechanical downtilt of the second antenna, wherein
the radio frequency unit is configured to generate a first radio frequency signal and a second radio frequency signal, wherein the first radio frequency signal and the second radio frequency signal have a same wavelength, a same target downtilt and carry same data;
the first modulator is configured to adjust a first electrical downtilt of the first radio frequency signal and output the adjusted first radio frequency signal to the first antenna for transmission, wherein the first electrical downtilt is adjusted based on the same target downtilt and the first mechanical downtilt;
the second modulator is configured to adjust a second electrical downtilt of the second radio frequency signal and output the adjusted second radio frequency signal to the second antenna for transmission, wherein the second electrical downtilt is adjusted based on the target downtilt and the second mechanical downtilt.

12. The antenna system of claim 11 , further comprising at least one of:
a third antenna, disposed on the first antenna, wherein the third antenna is an active antenna and the first antenna is a passive antenna; or
a fourth antenna, disposed on the second antenna, wherein the fourth antenna is an active antenna and the second antenna is a passive antenna.

13. The antenna system of claim 11 , the antenna system further comprising at least one of a first controller or a second controller, wherein
the first controller is configured to control, based on the target downtilt corresponding to the first radio frequency signal and the fir

Assignees

• Huawei Tech Co Ltd

Inventors

• Pu Tao
• Lv Jia
• Li Jianping
• Zhang Runxiao

Classifications

• H01Q21/10

  Collinear arrangements of substantially straight elongated conductive units · CPC title

• H01Q3/02

  using mechanical movement of antenna or antenna system as a whole · CPC title

• H01Q1/1228

  on a boom · CPC title

• H01Q1/125

  Means for positioning · CPC title

• H01Q3/06

  over a restricted angle · CPC title