Multi-sector antenna device

Abstract

The utility model provides a multi-sector antenna device. The multi-sector antenna device comprises a plurality of sectors; any two sectors have the same structure, any sector comprises a first area and a second area, the low-frequency antenna is arranged in the first area, and the high-frequency antenna is arranged in the second area; the sectors are arranged in a staggered mode, and in any two adjacent sectors, the first area of the first sector is adjacent to the second area of the second sector. In conclusion, according to the technical scheme provided by the invention, the overall size can be greatly reduced, the influence on the antenna radiation performance is reduced, the signal interference probability is reduced, and the signal transmission quality and efficiency are improved through more optimized spatial layout.

Description

Technical Field

[0001] This disclosure relates to the field of wireless technology, and more particularly to a multi-sector antenna device. Background Technology

[0002] Currently, in order to meet the main functions of dual-frequency and multi-sector switching, most antennas are designed as prism structures. Each side of the prism will place one or more antennas to be responsible for one sector, which will make the surrounding prism wider and the volume of the prism larger, affecting the radiation performance of the antenna, increasing the probability of signal interference, and reducing the quality and efficiency of signal transmission.

[0003] Practical content

[0004] This disclosure provides a multi-sector antenna device, which to some extent solves the problems of increased antenna prism volume, which affects antenna radiation performance, increases signal interference probability, and reduces signal transmission quality and efficiency.

[0005] According to one aspect of this disclosure, a multi-sector antenna device is provided, comprising: multiple sectors; any two sectors have the same structure, any sector includes a first region and a second region, a low-frequency antenna is disposed in the first region, and a high-frequency antenna is disposed in the second region; the multiple sectors are arranged alternately, and in any two adjacent sectors, the first region of the first sector and the second region of the second sector are arranged adjacent to each other.

[0006] According to one aspect of the present disclosure, the antenna includes: a low-frequency antenna or a high-frequency antenna; the antenna includes: a metal dipole, a dielectric substrate, a feed port, a support post, and a connecting arm; the dielectric substrate is arranged parallel to a metal ground plane; the dielectric substrate is provided with two sets of metal dipoles; either set of metal dipoles is arranged opposite to each other and connected by a connecting arm; in either set of metal dipoles, one metal dipole is connected to the metal ground plane through the feed port, and the other metal dipole is connected to the metal ground plane through the support post.

[0007] According to one aspect of the device disclosed, two sets of metal dipoles are arranged symmetrically and crosswise on a dielectric substrate.

[0008] According to one aspect of the apparatus of this disclosure, an inner conductor is provided in the power supply port, and the inner conductor is connected to a metal dipole.

[0009] According to one aspect of the apparatus of this disclosure, the metal dipoles are trapezoidal in structure; any set of metal dipoles are symmetrically arranged along the upper base of the trapezoid.

[0010] According to one aspect of the present disclosure, the sector includes: a metal ground plane and a feed port; the feed port is used to connect an antenna.

[0011] According to one aspect of the apparatus of this disclosure, when the number of multiple sectors is less than or equal to four, the sector further includes a reflector; the reflector is perpendicular to the metal floor and disposed along the periphery of the metal floor.

[0012] According to one aspect of the present disclosure, any sector includes: a low-frequency antenna and at least one high-frequency antenna.

[0013] According to one aspect of the apparatus of this disclosure, any sector has a T-shaped structure, with a first region at its horizontal end and at least one second region at its vertical end.

[0014] According to one aspect of the device disclosed, the horizontal end of the first sector is disposed adjacent to the vertical end of the second sector.

[0015] According to one aspect of the device disclosed, the first sector and the second sector are arranged perpendicularly or adjacent to each other at a preset angle.

[0016] This disclosure provides a multi-sector antenna device. The device includes: multiple sectors; any two sectors have the same structure, each sector includes a first region and a second region, a low-frequency antenna is disposed in the first region, and a high-frequency antenna is disposed in the second region; the multiple sectors are staggered, and in any two adjacent sectors, the first region of the first sector and the second region of the second sector are adjacent to each other. This unique layout design allows for a reasonable spatial distribution and isolation of the low-frequency and high-frequency antennas. The reasonable staggered sector layout enables physical spatial misalignment and complementarity, maximizing seamless sector fitting and constructing a compact, quasi-columnar antenna structure. Furthermore, compared to traditional prism-structure antennas, this structure significantly reduces the overall volume while achieving the same functionality, and greatly improves the quality and efficiency of signal transmission. In summary, the technical solution provided by this disclosure can reduce the impact on antenna radiation performance, decrease the probability of signal interference, and improve the quality and efficiency of signal transmission through a more optimized spatial layout.

[0017] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0018] The above and other objects, features, and advantages of this disclosure will become more apparent from the more detailed description of the embodiments thereof in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this disclosure and form part of the specification. They are used together with the embodiments of this disclosure to explain the disclosure and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0019] Figure 1 This is a schematic diagram of an existing multi-sector antenna structure;

[0020] Figure 2 A schematic diagram of a multi-sector device provided in an embodiment of this disclosure;

[0021] Figure 3 A schematic diagram of a single-sector antenna device provided in an embodiment of this disclosure;

[0022] Figure 4 This is a schematic diagram of the structure of a low-frequency antenna provided in an embodiment of this disclosure;

[0023] Figure 5 This is a schematic diagram of the structure of a high-frequency antenna provided in an embodiment of the present disclosure;

[0024] Figure 6 A three-dimensional multi-sector device diagram provided for embodiments of this disclosure. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this disclosure more apparent, exemplary embodiments according to this disclosure will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this disclosure, and not all embodiments of this disclosure. It should be understood that this disclosure is not limited to the exemplary embodiments described herein.

[0026] Currently, to meet the primary functions of dual-frequency and multi-sector switching, most antennas are designed with a prism structure, such as... Figure 1 As shown. Figure 1 This is a schematic diagram of an existing multi-sector antenna structure. From... Figure 1 As can be seen from the diagram, this is a four-sector layout. The four sectors are joined together by metal sheets or clips to form a prism structure. Each face of the prism houses one or more antennas to serve one sector. During maritime operations, to ensure stable communication between ships at different angles, more antennas are needed. This results in a wider prism surrounded by the antenna structure, increasing the prism's volume, affecting the antenna's radiation performance, increasing the probability of signal interference, and reducing the quality and efficiency of signal transmission.

[0027] Therefore, this disclosure provides a multi-sector antenna device. The device includes: multiple sectors;

[0028] Any two sectors have the same structure. Any sector includes a first region and a second region. The low-frequency antenna is set in the first region, and the high-frequency antenna is set in the second region.

[0029] Multiple sectors are staggered, and in any two adjacent sectors, the first region of the first sector and the second region of the second sector are set adjacent to each other.

[0030] In this embodiment, the antenna device includes multiple sectors, such as three, four, or five sectors. The specific number of sectors is not limited. Any two sectors of the antenna device have identical structures, meaning they possess the same physical framework, dimensions, etc., allowing for standardized assembly and facilitating later maintenance and component replacement. Furthermore, each sector is clearly divided into a first region and a second region. The first region is specifically for housing the low-frequency antenna, and the second region is specifically for housing the high-frequency antenna. This partitioning of low-frequency and high-frequency antennas effectively isolates signals from different frequency bands, reducing crosstalk between signals. In addition, in any two adjacent sectors, the first region of the first sector and the second region of the second sector are arranged adjacently, like assembled building blocks, with each part closely fitting in space. This achieves physical spatial misalignment and complementarity, maximizing seamless sector fitting and constructing a compact, columnar antenna structure.

[0031] Figure 2 This is a schematic diagram of a multi-sector device provided according to an embodiment of the present disclosure. Figure 2 As shown, a sector has a first region and a second region, and the sector structures are identical. Adjacent sectors in a multi-sector architecture are the first sector and the second sector. Figure 2 It can be seen that the first and second regions of the first and second sectors are set alternately, that is, the first region of the first sector is set adjacent to the second region of the second sector, and the second region of the first sector is set adjacent to the first region of the second sector.

[0032] This unique layout design allows for a rational spatial distribution and isolation of low-frequency and high-frequency antennas. The staggered sector layout enables physical spatial misalignment and complementarity, maximizing seamless sector fit and constructing a compact, quasi-columnar antenna structure. Furthermore, compared to traditional prismatic antenna structures, this structure significantly reduces the overall volume while achieving the same functionality, resulting in a substantial improvement in signal transmission quality and efficiency. In summary, the technical solution provided in this disclosure achieves a more optimized spatial layout, reducing the impact on antenna radiation performance, lowering the probability of signal interference, and improving signal transmission quality and efficiency.

[0033] For example, Figure 3 This is a schematic diagram of a single-sector antenna device provided in an embodiment of this disclosure. Figure 3 As can be seen, each sector has a low-frequency antenna placement area (i.e., the first region) and a high-frequency antenna placement area (i.e., the second region). The multi-sector antenna structure disclosed herein can be viewed as multiple... Figure 3 Single-sector assembly and synthesis. From above Figure 2As can be seen, the low-frequency antenna placement areas and high-frequency antenna placement areas of any two adjacent sectors are staggered. That is, the low-frequency antenna placement area of ​​the first sector is adjacent to the high-frequency antenna placement area of ​​the second sector, and the high-frequency antenna placement area of ​​the first sector is adjacent to the low-frequency antenna placement area of ​​the second sector.

[0034] The antenna features of this disclosure are described in detail below. The antennas disclosed herein include: low-frequency antennas or high-frequency antennas;

[0035] The antenna includes: a metal dipole, a dielectric substrate, a feed port, a support post, and a connecting arm;

[0036] The dielectric substrate is arranged parallel to the metal ground plane;

[0037] The dielectric substrate is provided with two sets of metal dipoles;

[0038] Any set of metal dipoles are arranged opposite each other and connected by a connecting arm;

[0039] In any set of metal dipoles, one metal dipole is connected to the metal ground via a feed port, and the other metal dipole is connected to the metal ground via a support column.

[0040] In this embodiment, the antenna includes a low-frequency antenna or a high-frequency antenna. The low-frequency antenna can be in the 703MHz-803MHz band, where the metal dipole is typically designed to be relatively long to accommodate the relatively long wavelengths. The specific frequency band of the low-frequency antenna is not specifically limited here. The high-frequency antenna can be in the 2515MHz-2675MHz band, where the size of the metal dipole is significantly reduced, typically on the millimeter scale, to accommodate the characteristics of high-frequency, short-wavelength frequencies. The specific frequency band of the high-frequency antenna is not specifically limited here.

[0041] Whether it is a low-frequency antenna or a high-frequency antenna, the antenna structure disclosed herein includes: a metal dipole, a dielectric substrate, a feed port, a support post, and a connecting arm.

[0042] Specifically, the metal dipole, as a key radiating element of the antenna, directly determines the antenna's operating frequency band and radiation characteristics through its length and shape, and its specific size and shape can be flexibly varied; the dielectric substrate not only provides physical support for other components but also affects the antenna's electrical performance; the feed port is the key interface for signals to enter and leave the antenna, and its performance can affect the antenna's operating efficiency; the support column plays an indispensable mechanical support role in the antenna structure; and the connecting arm is mainly responsible for adjusting the coupling relationship between the metal dipoles in the antenna.

[0043] In the antenna structure disclosed herein, the dielectric substrate and the metal ground plane can be arranged in parallel, which can form a relatively uniform electromagnetic field distribution between them, which is beneficial to improving the antenna's radiation efficiency and signal transmission stability.

[0044] The antenna structure disclosed herein features two sets of metal dipoles mounted on a dielectric substrate. For any given set of metal dipoles, they are positioned opposite each other and connected by a connecting arm. This arrangement optimizes the antenna's radiation pattern; the oppositely positioned metal dipoles generate a radiation field in a specific direction. The connecting arm not only provides a mechanical connection but also adjusts the coupling degree between the two metal dipoles electrically. Thus, through proper design, the electromagnetic interaction between the metal dipoles can be fine-tuned, enabling the antenna to achieve more efficient signal radiation and reception within a specific frequency band.

[0045] Furthermore, in a set of metal dipoles, one metal dipole can be connected to the metal ground via a feed port, while the other can be connected via a support post. This connection method provides different electrical connection paths for the metal dipoles. The metal dipole connected via the feed port directly receives the electrical signal input from the feed port and converts it into electromagnetic waves for radiation. The metal dipole connected via the support post, when working in conjunction with the one connected via the feed port, helps to adjust the current distribution and electric field strength of the antenna, further improving the antenna's radiation characteristics.

[0046] In summary, this arrangement of two sets of metal dipoles on the dielectric substrate, combined with the uniform electromagnetic field environment created by the parallel arrangement of the dielectric substrate and the metal ground plane, enables the antenna of this disclosure to possess high flexibility and adaptability in signal processing. Whether in low-frequency or high-frequency applications, antenna performance can be optimized by adjusting the size, shape, and connection method of the metal dipoles, as well as relevant parameters of the dielectric substrate and the metal ground plane, to meet the requirements of different communication systems regarding signal radiation, reception, and directivity.

[0047] In this embodiment, the two sets of metal dipoles are arranged in a cross-symmetrical manner on the dielectric substrate. This further optimizes the antenna's radiation pattern, enabling the antenna to achieve more uniform signal radiation and reception over a wider angular range. The cross-symmetrical layout helps generate orthogonal radiation field components, reduces signal fading in certain directions, and enhances the antenna's communication stability in complex environments.

[0048] In this embodiment of the disclosure, an inner conductor may be provided within the feed port of the antenna structure, and the inner conductor is connected to a metal dipole. This design enables efficient signal transmission, with the inner conductor serving as the core channel for signal transmission, accurately transmitting externally input electrical signals to the connected metal dipole.

[0049] In this embodiment, the metal dipoles of the antenna structure are trapezoidal; any set of metal dipoles is symmetrically arranged along the upper base of the trapezoid. This unique structural design helps optimize the antenna's radiation performance. Compared to traditional linear or other simple shapes, the trapezoidal metal dipoles allow for adjustment of the current distribution within a limited space, thereby altering the antenna's radiation characteristics. The symmetrical arrangement of the metal dipoles along the upper base of the trapezoid also results in a more uniform current distribution on the metal dipoles, which helps enhance the radiation intensity in a specific direction and improve the antenna's directivity.

[0050] For example, Figure 4 This is a schematic diagram of the structure of a low-frequency antenna provided in an embodiment of this disclosure. Figure 4 As shown, the low-frequency antenna structure includes: dipoles (i.e., the metal dipoles of this disclosure) 4-1 and 4-2, a dielectric substrate 4-3, two feed-supporting coaxial waveguide ports (i.e., feed ports) 4-4-1 and 4-4-2, two supporting metal pillars (i.e., support pillars) 4-4-3, a metal ground plane 4-5, and two connecting arms 4-6-1 and 4-6-2. Specifically, the connection relationship is as follows: dipoles 4-1 and 4-2 are placed on the dielectric substrate 4-3 and supported by the two feed-supporting coaxial waveguide ports 4-4-1 and 4-4-2 and the two supporting metal pillars 4-4-3. One side of the connecting arm 4-6-1 is connected to one side of the dipole 4-1, the other side of the connecting arm 4-6-1 is connected to the inner conductor of the feed-supporting coaxial waveguide port 4-4-1, and the other side of the dipole 4-1 is connected to the outer conductor of the feed-supporting coaxial waveguide port 4-4-1. One side of connecting arm 4-6-2 is connected to one side of dipole 4-2, and the other side of connecting arm 4-6-2 is connected to the inner conductor of feed support coaxial waveguide port 4-4-2. The other side of dipole 4-2 is connected to the outer conductor of feed support coaxial waveguide port 4-4-2. The outer conductors of the two feed support coaxial waveguide ports 4-4-1 and 4-4-2 are connected to the metal ground plate 4-5. Electromagnetic waves feed energy to dipole 4-1 through feed port 4-4-1 and to dipole 4-2 through feed port 4-4-2; the polarization directions of 4-1 and 4-2 are orthogonal to form polarization diversity.

[0051] For example, Figure 5 This is a schematic diagram of the structure of a high-frequency antenna provided in an embodiment of this disclosure. Figure 5As shown, the high-frequency antenna structure comprises: dipoles (i.e., the metal dipoles of this disclosure) 5-1 and 5-2, a dielectric substrate 5-3, two feed-supporting coaxial waveguide ports (i.e., feed ports) 5-4-1 and 5-4-2, two supporting metal pillars (i.e., support pillars) 5-4-3, a metal ground plane 5-5, and two connecting arms 5-5-1 and 5-5-2. The dipoles 5-1 and 5-2 are placed on the dielectric substrate 5-3 and supported by the two feed-supporting coaxial waveguide ports 5-4-1 and 5-4-2 and the two supporting metal pillars 5-4-3. One side of the connecting arm 5-5-1 is connected to one side of the dipole 5-1, and the other side of the connecting arm 5-5-1 is connected to the inner conductor of the feed-supporting coaxial waveguide port 5-4-1. The other side of the dipole 5-1 is connected to the outer conductor of the feed-supporting coaxial waveguide port 5-4-1. One side of connecting arm 5-5-2 is connected to one side of dipole 5-2, and the other side of connecting arm 5-5-2 is connected to the inner conductor of feed support coaxial waveguide port 5-4-2. The other side of dipole 5-2 is connected to the outer conductor of feed support coaxial waveguide port 5-4-2. The outer conductors of the two feed ports 5-4-1 and 5-4-2 are connected to the metal ground plane 5-5. Electromagnetic waves feed energy to dipole 5-1 through feed port 5-4-1 and to dipole 5-2 through feed port 5-4-2. The polarization directions of 5-1 and 5-2 are orthogonal to form polarization diversity.

[0052] It is important to note that Figure 4 The low-frequency antenna structure shown is similar to Figure 5 The high-frequency antenna structures shown are basically the same in terms of components and connection methods, but differ in the size of the metal dipole and related parameters such as the dielectric substrate. This design allows for better adaptation to the characteristics of low-frequency and high-frequency signals respectively.

[0053] The characteristics of the sectors disclosed herein will be described in detail below.

[0054] In this embodiment, the sector includes a metal ground plane and a feed port; the feed port is used to connect the antenna. The metal ground plane serves as the basic support structure for the entire sector, providing a mounting surface for other components and also playing a role in electromagnetic performance. The feed port is the key interface for signal transmission, ensuring a stable connection between the antenna and an external signal source or receiving device. It should be noted that the spatial location of the feed port can be adjusted according to actual conditions and is not limited here. Figure 3 As can be seen, a single sector includes a power feed port in addition to the metal ground plane (for low-frequency and high-frequency antenna placement). The specific location of the power feed port can be adjusted according to the antenna placement requirements.

[0055] In this embodiment, when the number of sectors is four or less, the sector further includes a reflector; the reflector is perpendicular to the metal floor and disposed along the periphery of the metal floor. The sector of this disclosure may also include a reflector, which can further optimize the signal radiation characteristics of the sector. That is, a reflector perpendicular to the metal floor and disposed along its periphery can effectively block and reflect interference signals from other directions, making the signal of the sector radiate more concentratedly in a specific direction. It should be noted that the reflector can be varied according to the number of sectors. When the number of sectors is four or less, the reflector can be used to separate the antennas of each sector when connecting multi-sector devices. When the number of sectors is greater than four, the reflector can be removed, and the antenna can be adjusted according to spatial requirements.

[0056] In the embodiments of this disclosure, any sector includes: a low-frequency antenna and at least one high-frequency antenna. It should be noted that the antenna structure designed in this disclosure can have one low-frequency antenna and at least one (i.e., two or more) high-frequency antennas. This combination of high and low-frequency antennas allows the sector to cover a wider frequency band range, meeting the processing needs of different frequency band signals in different communication scenarios. The specific number can be determined according to the area size and application scenario, and is not limited here.

[0057] In this embodiment, any sector has a T-shaped structure, with a first region at its horizontal end and at least one second region at its vertical end. This is because the first region is specifically designed to house a low-frequency antenna. Since low-frequency signals have longer wavelengths, they require more space to achieve good resonance. The larger space at the horizontal end of the T-shape meets this requirement, contributing to the effective radiation and reception of low-frequency signals. The second region is used to house a high-frequency antenna. High-frequency antennas are relatively small, and the space at the vertical end of the T-shape is sufficient to accommodate them. Furthermore, this layout effectively isolates the high-frequency and low-frequency antennas spatially, reducing crosstalk between different frequency bands and improving the signal quality of the entire sector. Figures 2-3 As can be seen, for any given sector, the sector is T-shaped, with the first region (i.e., low-frequency antenna) set at the horizontal end and the second region (i.e., high-frequency antenna) set at the vertical end.

[0058] In this embodiment, the horizontal end of the first sector and the vertical end of the second sector are arranged adjacent to each other. This allows for more sectors to be accommodated within a limited space, improving space utilization. Simultaneously, since the low-frequency antenna at the horizontal end of the first sector and the high-frequency antenna at the vertical end of the second sector are adjacent, signals from different frequency bands spatially complement each other, which helps to expand the signal coverage area.

[0059] In this embodiment, the first sector and the second sector are arranged perpendicularly or adjacent to each other at a preset angle. Specifically, when arranged perpendicularly, the radiation directions of the two sectors are perpendicular to each other, which can effectively cover a wider range of spatial angles. In this context, this can be understood as follows: when there are four sectors, they can be arranged evenly at 90-degree angles, with each sector responsible for covering the signal within a 90-degree range, thus achieving more comprehensive and balanced signal coverage of the surrounding environment. Arranging them adjacent to each other at a preset angle allows for flexible adjustment of the angle between sectors according to the needs of the actual application scenario, thereby optimizing the specific direction and area of ​​signal coverage. For example, when there are three sectors, they can be arranged at an angle of approximately 60 degrees. When there are any sectors exceeding four sectors, they can be arranged at an angle of π (circumference).

[0060] For example, Figure 6 A three-dimensional diagram of a multi-sector device provided for embodiments of this disclosure. Figure 6 As can be seen, this multi-sector antenna system comprises four sectors. For each sector, the horizontal end of the T-shaped structure houses one low-frequency antenna, while the vertical end houses two high-frequency antennas. When assembling the sectors, the vertical end of the T-shaped structure in the front sector is adjacent to the horizontal end of the T-shaped structure in the adjacent side sector. As shown in the diagram, the two high-frequency antennas on the front are adjacent to one low-frequency antenna on the side. This pattern continues, with the entire multi-sector antenna device staggered to form a tightly integrated columnar structure.

Claims

1. A multi-sector antenna apparatus, comprising: The antenna comprises: a plurality of sectors; any two of the sectors have the same structure, and any one of the sectors comprises a first area and a second area, a low-frequency antenna is arranged in the first area, and a high-frequency antenna is arranged in the second area; the plurality of sectors are staggered, and in any two adjacent sectors, the first area of a first sector is arranged adjacent to the second area of a second sector.

2. The apparatus of claim 1, wherein, The antenna comprises: the low-frequency antenna or the high-frequency antenna; the antenna comprises a metal dipole, a dielectric substrate, a feed port, a support column, and a connecting arm; the dielectric substrate is arranged parallel to a metal ground plate; the dielectric substrate is provided with two groups of metal dipoles; any one group of metal dipoles is arranged opposite to each other and connected by the connecting arm; in any one group of metal dipoles, one metal dipole is connected to the metal ground plate through the feed port, and the other metal dipole is connected to the metal ground plate through the support column.

3. The apparatus of claim 2, wherein, The two groups of metal dipoles are symmetrically arranged on the dielectric substrate.

4. The apparatus of claim 2, wherein, An inner conductor is arranged in the feed port, and the inner conductor is connected to one metal dipole.

5. The apparatus of claim 2, wherein, The metal dipole has a trapezoidal structure, and any one group of metal dipoles is symmetrically arranged along the upper base of the trapezoid.

6. The apparatus of claim 1, wherein, The sector comprises a metal ground plate and a feed port, and the feed port is used to connect the antenna.

7. The apparatus of claim 1, wherein, When the number of the plurality of sectors is less than or equal to four, the sector further comprises a reflecting plate, the reflecting plate is perpendicular to the metal ground plate and is arranged along the periphery of the metal ground plate.

8. The apparatus of claim 1, wherein, Any one sector comprises one low-frequency antenna and at least one high-frequency antenna.

9. The apparatus of claim 1, wherein, Any one sector has a T-shaped structure, the horizontal end of the T-shaped structure is provided with a first area, and the vertical end of the T-shaped structure is provided with at least one second area.

10. The apparatus of claim 9, wherein, The horizontal end of the first sector is arranged adjacent to the vertical end of the second sector.

11. The device of any one of claims 1-10, wherein, The first sector and the second sector are arranged perpendicular to each other or adjacent to each other at a preset angle.

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