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CN-224217702-U - UWB antenna module for AOA positioning

CN224217702UCN 224217702 UCN224217702 UCN 224217702UCN-224217702-U

Abstract

The UWB antenna module for AOA positioning comprises a horizontal PCB, a vertical PCB, a first antenna and a second antenna, wherein the vertical PCB is arranged on the horizontal PCB, the first antenna and the second antenna are monopole antennas and are arranged on the vertical PCB side by side along the horizontal direction, the first antenna and the second antenna are vertical polarized antennas, and the angle difference between the phase centers of the first antenna and the second antenna is smaller than 180 degrees so as to meet the phase requirement of 2D positioning. Through the layout of two monopole antennas, the omnidirectional antenna design with high isolation and high cross polarization ratio is realized, and 2D positioning can be realized within a range of 180 degrees.

Inventors

  • ZHANG QIANG
  • ZOU JIANFENG

Assignees

  • 深圳市飞睿智能有限公司

Dates

Publication Date
20260508
Application Date
20250530

Claims (8)

  1. 1. A UWB antenna module for AOA positioning, comprising: a horizontal PCB board; the vertical PCB is arranged on the horizontal PCB; the first antenna and the second antenna are monopole antennas and are arranged on the vertical PCB side by side along the horizontal direction; The first antenna and the second antenna are vertical polarized antennas, and the angle difference between the phase centers of the first antenna and the second antenna is smaller than 180 degrees so as to meet the phase requirement of 2D positioning.
  2. 2. The UWB antenna module for AOA positioning of claim 1 wherein the first and second antennas are T-antennas, L-antennas or in-line antennas.
  3. 3. UWB antenna module for AOA positioning according to claim 1 or 2, characterized in that the first antenna and the second antenna are both arranged on the surface or on the inner layer of the vertical PCB board.
  4. 4. A UWB antenna module for AOA positioning according to any of claims 1 to 3, wherein the first and second antennas are centered at a distance of less than 0.5 wavelength and have an isolation of greater than 15dB.
  5. 5. A UWB antenna module for AOA positioning according to any of the claims 1 to 4, wherein the first antenna and the second antenna are symmetrical to achieve the same phase.
  6. 6. A UWB antenna module for AOA positioning according to any of the claims 1 to 5, wherein the first antenna and the second antenna are fed on the horizontal PCB board.
  7. 7. UWB antenna module for AOA positioning according to any of the claims 1 to 6, characterized in that the feed positions of the first and the second antenna are connected to a control module by means of coaxial or microstrip lines.
  8. 8. A UWB antenna module for AOA positioning according to any of the claims 1 to 7, wherein the line lengths of the first and second antennas to the control module remain equal so that the initial phase of each antenna is the same.

Description

UWB antenna module for AOA positioning Technical Field The utility model relates to UWB (ultra wide band) positioning technology, in particular to a UWB antenna module for AOA (angle of arrival) positioning, which can realize 2D and 180-degree positioning. Background UWB positioning technology is increasingly used in consumer electronics and vehicle-mounted applications, and high-precision positioning can be achieved through AOA algorithms. However, integrating antennas on UWB antenna modules to achieve 2D, 180 degree positioning faces challenges in ensuring phase center consistency, high isolation, and miniaturized design. The prior art generally needs to compromise performance, either sacrifice phase center consistency or reduce isolation, or meet the requirements by increasing antenna size, but none of these solutions address the requirements of both miniaturization and high performance. It should be noted that the information disclosed in the above background section is only for understanding the background of the application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art. Disclosure of Invention The main object of the present utility model is to overcome the drawbacks of the prior art described above, and to provide a UWB antenna module for AOA positioning, capable of achieving 2D positioning within 180 degrees. In order to achieve the above purpose, the present utility model adopts the following technical scheme: A UWB antenna module for AOA positioning, comprising: a horizontal PCB board; the vertical PCB is arranged on the horizontal PCB; the first antenna and the second antenna are monopole antennas and are arranged on the vertical PCB side by side along the horizontal direction; The first antenna and the second antenna are vertical polarized antennas, and the angle difference between the phase centers of the first antenna and the second antenna is smaller than 180 degrees so as to meet the phase requirement of 2D positioning. Further, the first antenna and the second antenna are T-shaped antennas, L-shaped antennas or linear antennas. Further, the first antenna and the second antenna are both arranged on the surface or the inner layer of the vertical PCB. Further, the center distance between the first antenna and the second antenna is smaller than 0.5 wavelength, and the isolation is larger than 15dB. Further, the first antenna and the second antenna are symmetrical to achieve the same phase. Further, the first antenna and the second antenna realize feeding on the horizontal PCB board. Further, the feeding positions of the first antenna and the second antenna are connected to the control module through coaxial lines or microstrip lines. Further, the line lengths of the first antenna and the second antenna to the control module are kept equal, so that the initial phase of each antenna is the same. The utility model has the beneficial effects that: The utility model provides an UWB antenna module for AOA positioning, which realizes the design of an omnidirectional antenna with high isolation and high cross polarization ratio through the layout of two monopole antennas and can realize 2D positioning within a range of 180 degrees. Through the miniaturized array design of many antennas, the phase center distance between the antennas satisfies 180 degrees phase demands of location, can accurately carry out the 2D location of AOA. The two antennas are respectively arranged on the vertical PCB, and high isolation and phase consistency between the antennas are ensured through reasonable layout and feed design. The utility model has the advantages of miniaturized design and ingenious layout of the double antennas, and is suitable for the technical fields of vehicle-mounted fields, consumer electronics, internet of things and the like. Drawings Fig. 1 is a schematic structural diagram of a UWB antenna module for AOA positioning according to an embodiment of the present utility model. Fig. 2 is a schematic diagram of positioning of a UWB antenna module for AOA positioning according to an embodiment of the present utility model. Fig. 3 is a schematic diagram of S11 parameters of the antenna. Fig. 4 is a schematic diagram of isolation between antennas. Fig. 5 is a horizontal plane pattern of the T-shaped antenna. Detailed Description The following describes embodiments of the present utility model in detail. It should be emphasized that the following description is merely exemplary in nature and is in no way intended to limit the scope of the utility model or its applications. It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. In