Antenna reflector, antenna and communication device

Abstract

The application relates to an antenna reflector plate, an antenna and a communication device. The antenna reflector plate comprises a first reflector plate and a second reflector plate connected to each other; wherein the first reflector plate has the characteristics of being able to transmit high-frequency signals and reflect low-frequency signals, and the second reflector plate has the characteristics of being able to reflect high-frequency signals and low-frequency signals. The antenna reflector plate can improve the distortion degree of the radiation pattern of the high-frequency band radiation unit and ensure the antenna radiation index.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to an antenna reflector, an antenna, and a communication device. Background Technology

[0002] Antennas are an important component of base station antenna systems, used for transmitting and receiving signals; antenna reflectors are another important component of antennas, used to improve the sensitivity of the antenna in transmitting and receiving signals. With the continuous development of communication technology, the number of frequency bands and radiating elements integrated into antennas is increasing.

[0003] When radiating elements with different operating frequencies are mounted on an antenna reflector, electromagnetic reflection and refraction between the reflector and the radome can cause distortion in the radiation pattern of the high-frequency radiating elements, resulting in a deterioration in the antenna's radiation performance. Therefore, improving the distortion of the radiation pattern of the high-frequency radiating elements and ensuring the antenna's radiation performance is an urgent problem to be solved. Summary of the Invention

[0004] Therefore, it is necessary to provide an antenna reflector, antenna, and communication equipment that can improve the distortion of the radiation pattern of the high-frequency radiating element and ensure the antenna radiation performance in order to address the above-mentioned technical problems.

[0005] In a first aspect, this application provides an antenna reflector. The antenna reflector includes a first reflector and a second reflector connected to each other; wherein the first reflector has the characteristic of transmitting high-frequency signals and reflecting low-frequency signals, and the second reflector has the characteristic of reflecting both high-frequency signals and low-frequency signals.

[0006] In one embodiment, the first reflector includes a plurality of reflector units arranged in an array; the reflector units are used to reflect low-frequency signals and transmit high-frequency signals.

[0007] In one embodiment, the reflector unit includes a dielectric substrate and a first conductor structure and a second conductor structure disposed on the dielectric substrate; the first conductor structure includes a first cutout area; the second conductor structure is located within the first cutout area and has a gap with the first conductor structure, and the first conductor structure and the second conductor structure are electrically coupled based on the gap.

[0008] In one embodiment, the reflector unit includes a dielectric substrate and a third conductor structure disposed on the dielectric substrate; the third conductor structure includes a second cutout region, the second cutout region including two first gap regions, the two first gap regions intersecting each other.

[0009] In one embodiment, the length of the first slit region is equal to a preset multiple of the target wavelength, where the target wavelength is the wavelength of the center frequency of the high-frequency band to which the antenna to which the antenna reflector operates; the intersection angle of the two first slit regions is 90 degrees.

[0010] In one embodiment, the reflector unit includes a metal reflective component; the metal reflective component includes a third cutout area, the third cutout area including two second slit areas that intersect each other.

[0011] In one embodiment, the length of the second slit region is equal to a preset multiple of the target wavelength, which is the wavelength of the center frequency of the high-frequency band to which the antenna to which the antenna reflector operates; the intersection angle of the two second slit regions is 90 degrees.

[0012] In one embodiment, the antenna reflector includes at least one first reflector and at least one second reflector.

[0013] In one embodiment, the antenna reflector includes a second reflector and two first reflectors; wherein the second reflector includes a first reflector portion and a second reflector portion, the first reflector portion and the second reflector portion forming a T shape; the two first reflectors are respectively located on both sides of the first reflector portion.

[0014] Secondly, this application also provides an antenna. The antenna includes the antenna reflector as described in any of the first aspects above; the antenna also includes a low-frequency radiator and a high-frequency radiator, the low-frequency radiator and the high-frequency radiator being located on the antenna reflector.

[0015] In one embodiment, the low-frequency radiator is located above the first reflector of the antenna reflector, and the high-frequency radiator is located above the second reflector of the antenna reflector.

[0016] In one embodiment, the low-frequency radiator is located above the first and second reflectors of the antenna reflector, and the high-frequency radiator is located above the second reflector of the antenna reflector.

[0017] In one embodiment, the low-frequency radiator includes multiple arrayed low-frequency radiating elements, and the high-frequency radiator includes multiple arrayed high-frequency radiating elements.

[0018] Thirdly, this application also provides a communication device. This communication device includes an antenna as described in any of the second aspects above.

[0019] The aforementioned antenna reflector, antenna, and communication equipment include a first reflector and a second reflector connected to each other. The first reflector is capable of transmitting high-frequency signals and reflecting low-frequency signals, while the second reflector is capable of reflecting both high-frequency and low-frequency signals. To ensure the quality of antenna signal transmission and reception, antenna reflectors typically require a larger area to reflect low-frequency signals and a smaller area to reflect high-frequency signals, while also requiring high antenna integration. Therefore, considering integration issues, if high-frequency and low-frequency radiating elements are located on the same antenna reflector, the larger area of ​​the reflector reflecting high-frequency signals will distort the radiation pattern of the high-frequency radiating elements, affecting the antenna's radiation performance. The antenna reflector provided in this application has the following advantages: the first reflector can transmit high-frequency signals and reflect low-frequency signals, while the second reflector can reflect both high-frequency and low-frequency signals. Therefore, when both the high-frequency and low-frequency radiating elements are located on the antenna reflector, the low-frequency radiating elements can be reflected using both the first and second reflectors without affecting the transmission and reception quality of the low-frequency signals. Meanwhile, for the high-frequency radiating elements, the first reflector is used for transmission of high-frequency signals, while only the second reflector is used for reflection. This reduces the reflection area of ​​high-frequency signals, effectively improves the distortion of the radiation pattern of the high-frequency radiating elements, and ensures the radiation performance of the antenna. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the antenna reflector structure in one embodiment;

[0021] Figure 2 This is a schematic diagram of the structure of the first type of reflector unit in one embodiment;

[0022] Figure 3 This is a schematic diagram of the structure of the second type of reflector unit in one embodiment;

[0023] Figure 4 This is a schematic diagram of the structure of the third type of reflector unit in one embodiment;

[0024] Figure 5 This is a schematic diagram of the structure of the second type of antenna reflector in one embodiment;

[0025] Figure 6 This is a schematic diagram of the structure of the third type of antenna reflector in one embodiment;

[0026] Figure 7 This is a schematic diagram of the structure of the fourth type of antenna reflector in one embodiment;

[0027] Figure 8 This is a schematic diagram of a partial structure of the first reflector in one embodiment;

[0028] Figure 9 This is a schematic diagram of the antenna structure in one embodiment;

[0029] Figure 10 This is a schematic diagram of the structure of another antenna in one embodiment. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. Numerous specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0036] With the continuous development of mobile communication technology and increasingly fierce market competition, base station antenna systems are facing higher requirements for miniaturization, high integration, and high performance. Currently, under the demand for miniaturization and high integration, base station antennas integrate more and more frequency bands and arrays, leading to an increasingly complex electromagnetic environment. When radiating elements with different operating frequencies are mounted on the same reflector, the radiation pattern of the high-frequency radiating element will be distorted due to electromagnetic reflection and refraction between the reflector and the radome. This can result in beam dips, excessively wide or narrow beamwidths, and increased cross-polarization, leading to a deterioration in the antenna's radiation performance after reflection and a reduction in antenna radiation efficiency.

[0037] In traditional technology, radiating elements with different operating frequencies are placed separately on reflectors of different sizes, so that the antenna reflector reflects low-frequency signals with a larger area and high-frequency signals with a smaller area. However, this approach increases the production cost of base station antennas and makes it difficult to meet today's requirements for miniaturization and integration.

[0038] In view of this, embodiments of this application provide an antenna reflector, which includes a first reflector and a second reflector connected to each other. The first reflector has the characteristic of transmitting high-frequency signals and reflecting low-frequency signals, while the second reflector has the characteristic of reflecting both high-frequency and low-frequency signals. When this antenna reflector is used in an antenna, because the first reflector has the characteristic of transmitting high-frequency signals and reflecting low-frequency signals, and the second reflector has the characteristic of reflecting both high-frequency and low-frequency signals, when both the high-frequency radiating element and the low-frequency radiating element are located on this antenna reflector, for the low-frequency radiating element… Both the first and second reflectors can be used to reflect low-frequency signals without affecting the transmission and reception quality of low-frequency signals. Meanwhile, for the high-frequency radiating element, the first reflector is used to transmit high-frequency signals, while only the second reflector is used to reflect them. This reduces the reflection area of ​​high-frequency signals. While optimizing the radiation pattern distortion of the high-frequency antenna array caused by the increased reflector area, it provides a sufficiently large reflection area for the low-frequency radiating element. This ensures the integration of the antenna while also improving the distortion of the radiation pattern of the high-frequency radiating element and guaranteeing the antenna's radiation performance.

[0039] In one embodiment, an antenna reflector is provided, such as Figure 1 As shown, it illustrates a structural schematic diagram of an antenna reflector provided in an embodiment of this application; the antenna reflector includes a first reflector 101 and a second reflector 102 connected to each other; wherein, the first reflector 101 has the characteristics of transmitting high-frequency signals and reflecting low-frequency signals, and the second reflector 102 has the characteristics of reflecting both high-frequency signals and low-frequency signals.

[0040] In communication equipment, an antenna is a converter that transforms signals into electromagnetic waves radiated into free space. It converts signals into electromagnetic waves that are radiated into free space, or receives electromagnetic waves in free space and converts them back into signals, thus enabling the transmission and reception of signals. Furthermore, the antenna operates within a specific frequency range.

[0041] With the development and increasing complexity of communication technologies, the operating frequency bands of antennas have also become more complex. Taking base station antennas used in base station systems as an example, they need to receive and transmit both high-frequency and low-frequency signals. In other words, the operating frequency bands of base station antennas include both low-frequency and high-frequency bands. Specifically, the antenna receives or transmits low-frequency or high-frequency signals through its included low-frequency and high-frequency radiating elements.

[0042] An antenna reflector is a component of an antenna. The radiating elements in the antenna can be disposed on the antenna reflector. The reflection of signals by the antenna reflector can improve the antenna's signal reception sensitivity. The antenna reflector provided in this application embodiment can be used in base station antennas or other multi-system shared antennas including multiple different operating frequency bands. This application embodiment does not specifically limit the type of antenna.

[0043] Specifically, the radiation pattern describes the radiation intensity of an antenna in any direction, and it is an important parameter of the antenna. To ensure the quality of antenna signal transmission and reception, antenna reflectors are typically required to reflect low-frequency signals with a larger area and high-frequency signals with a smaller area, while also requiring high antenna integration. Considering increasing antenna integration while improving the degree of radiation pattern distortion in the high-frequency radiating elements of the antenna, this application provides an antenna reflector. This reflector includes a first reflector 101 and a second reflector 102 connected to each other. The first reflector 101 has the characteristic of transmitting high-frequency signals and reflecting low-frequency signals, while the second reflector 102 has the characteristic of reflecting both high-frequency and low-frequency signals. Therefore, when this antenna reflector is used in an antenna, both the first reflector 101 and the second reflector 102 in the antenna reflector can reflect low-frequency signals; while for high-frequency signals, the first reflector 101 in the antenna reflector transmits high-frequency signals, and only the second reflector 102 is used to reflect high-frequency signals. Therefore, it is beneficial to optimize the radiation pattern distortion problem caused by the high-frequency radiation unit for transmitting and receiving high-frequency signals due to the increase in the reflector area. At the same time, it also provides a sufficiently large reflecting surface for the low-frequency radiation unit for transmitting and receiving low-frequency signals.

[0044] Optionally, the first reflector 101 may be composed of multiple reflector units with frequency bandpass characteristics, and the second reflector 102 may be a metal reflective surface structure.

[0045] Optionally, the first reflector 101 and the second reflector 102 can be connected by a structural connector to form the antenna reflector. Optionally, the structural connector can be a metal connector, a plastic connector, or a screw, etc., or the first reflector 101 and the second reflector 102 can be connected to each other by welding. The embodiments of this application do not specifically limit the connection method between the first reflector 101 and the second reflector 102.

[0046] Optionally, the antenna reflector may also include a plurality of interconnected first reflectors 101 and second reflectors 102. In this embodiment, the number of first reflectors 101 and second reflectors 102 constituting the antenna reflector is not specifically limited.

[0047] Optionally, for the antenna, the low-frequency radiating element in the antenna can be disposed on the first reflector 101, and the high-frequency radiating element in the antenna can be disposed on the second reflector 102.

[0048] The plane in which the antenna reflector is located is perpendicular to the axis of the antenna; and, relative to the diffraction direction facing the radiating element array in the antenna, the first reflector 101 in the antenna reflector is located on the left and the second reflector 102 is located on the right.

[0049] The aforementioned antenna reflector can be used in an antenna. The antenna reflector includes a first reflector and a second reflector connected to each other. The first reflector has the characteristic of transmitting high-frequency signals and reflecting low-frequency signals, while the second reflector has the characteristic of reflecting both high-frequency and low-frequency signals. Typically, considering improving antenna integration, if high-frequency and low-frequency radiating elements are located on the same antenna reflector, the area of ​​the antenna reflector reflecting high-frequency signals will be large, leading to distortion of the radiation pattern of the high-frequency radiating elements and affecting the antenna's radiation performance. The antenna reflector provided in this application has the following advantages: the first reflector can transmit high-frequency signals and reflect low-frequency signals, while the second reflector can reflect both high-frequency and low-frequency signals. Therefore, when both high-frequency and low-frequency radiating elements are located on the antenna reflector, for the low-frequency radiating element, both the first and second reflectors can reflect the low-frequency signal without affecting the transmission and reception quality of the low-frequency signal. Simultaneously, for the high-frequency radiating element, the first reflector is used for transmission of the high-frequency signal, while only the second reflector is used for reflection. This reduces the reflection area of ​​the high-frequency signal, effectively improving the distortion of the radiation pattern of the high-frequency radiating element and ensuring the antenna's radiation performance. Furthermore, the antenna reflector provided in this application has a simple structure, facilitating its arrangement in a multi-system shared antenna that includes multiple radiating elements of different frequency bands. This effectively reduces the size of the multi-system shared antenna and increases its integration.

[0050] In one embodiment, the first reflector 101 includes a plurality of reflector units arranged in an array; the reflector units are used to reflect low-frequency signals and transmit high-frequency signals.

[0051] The first reflector 101 in the antenna reflector can be composed of multiple reflector units. Each reflector unit has the characteristic of reflecting low-frequency signals and transmitting high-frequency signals. In other words, each reflector unit is a reflective structure with bandpass characteristics of a certain frequency, so that the first reflector 101 has the characteristic of transmitting high-frequency signals and reflecting low-frequency signals.

[0052] The first reflector 101, formed by multiple reflector units, reduces reflections on the first reflector 101 when high-frequency signals reach it, allowing the high-frequency signals to be transmitted. Conversely, when low-frequency signals reach the first reflector 101, they are reflected on each reflector unit. Thus, when both high-frequency and low-frequency radiating elements are mounted on the antenna reflector, low-frequency signals are well reflected while high-frequency signals are not reflected, thereby improving the radiation pattern of the high-frequency radiating elements.

[0053] This application provides three types of reflector unit structures. The first reflector 101 can be constructed by multiple reflector units of any type. The structures of the three reflector units will be described below.

[0054] In the first structure, the reflector unit includes a dielectric substrate and a first conductor structure and a second conductor structure disposed on the dielectric substrate; the first conductor structure includes a first hollow area; the second conductor structure is located within the first hollow area and there is a gap between it and the first conductor structure, and the first conductor structure and the second conductor structure are electrically coupled based on the gap.

[0055] Both the first and second conductor structures are made of conductive material and are integrally disposed on a dielectric substrate. A gap exists between them, and they are electrically coupled based on this gap. Electrical coupling refers to the phenomenon where the input and output of two circuit elements are closely matched and mutually influential, transferring energy from one side to the other through interaction. Optionally, the dielectric substrate can be made of a dielectric material. This application does not impose specific requirements on the size of the dielectric substrate, the first conductor structure, and the second conductor structure. While ensuring that the reflector unit transmits high-frequency signals and reflects low-frequency signals, the components of the reflector unit can be sufficiently small to increase the integration of the antenna reflector and meet the requirements of antenna miniaturization, high integration, and high performance.

[0056] Optionally, the first conductor structure can be a ring-shaped, square ring-shaped, or polygonal ring-shaped structure, and the second conductor structure is located in the gap region inside the ring-shaped structure. Thus, the first and second conductor structures can be electrically coupled based on the formed gap, enabling the reflector unit to have bandpass characteristics for the corresponding frequencies. This reduces reflections on the reflector unit when high-frequency signals reach it and allows the high-frequency signals to pass through, while reflecting low-frequency signals. Using this reflector unit as a component of the first reflector 101 in an antenna effectively improves the radiation pattern of the high-frequency radiating element.

[0057] Please refer to Figure 2The diagram shows a schematic representation of the structure of a first reflector unit provided in an embodiment of this application. The reflector unit includes a dielectric substrate 201, a first conductor structure 202, and a second conductor structure 203. The first conductor structure 202 includes a first hollow area 204, and the second conductor structure 203 is located within the first hollow area 204 and has a gap with the first conductor structure 202.

[0058] Optionally, the first conductor structure 202 can be a triangular, polygonal, circular, or irregular polygonal structure including the first hollow area 204. For example, Figure 2 Taking the first conductor structure 202 as a quadrilateral ring conductor structure as an example, that is, taking the quadrilateral structure including the first hollow area 204 as an example, the dielectric substrate 201 is a quadrilateral example, which is not used to limit the shape of the first ring conductor structure in the embodiments of this application. The dielectric substrate 201 can also be other shapes.

[0059] Optionally, the second conductor structure 203 can be a triangular, polygonal, circular, or irregular polygonal structure, for example... Figure 2 Taking the quadrilateral shape of the second conductor structure 203 as an example, it is not intended to limit the shape of the second annular conductor structure in this embodiment. Correspondingly, the first hollowed-out area 204 can also be a triangle, polygon, circle, or irregular polygon, etc. This embodiment does not specifically limit this, as long as the electrical coupling between the first conductor structure 202 and the second conductor structure 203 satisfies the requirement of having bandpass characteristics for high frequencies. For example... Figure 2 As can be seen from the example, the first conductor structure 202 is a square ring conductor structure, and the first hollow area 204 contained therein is square; after the second conductor structure 203, which is square in shape, is placed in the first hollow area 204, the gap formed is the square ring space area.

[0060] The first reflector 101 can be formed by arranging multiple reflector units, including a dielectric substrate 201 and a first conductor structure 202 and a second conductor structure 203 disposed on the dielectric substrate 201, in an array connected to each other.

[0061] In the second structure, the reflector unit includes a dielectric substrate and a third conductor structure disposed on the dielectric substrate; the third conductor structure includes a second hollow area, the second hollow area includes two first gap areas, and the two first gap areas intersect each other.

[0062] The third conductor structure is made of a conductor material, and optionally, the dielectric substrate can be made of a dielectric material. Specifically, the third conductor structure includes a second cutout area and is entirely located on the dielectric substrate.

[0063] Optionally, the third conductor structure can be a triangular, polygonal, circular, or irregular polygonal structure that includes the second hollow area. The second hollow area includes two first gap areas that intersect each other. In other words, the second hollow area is formed by opening two first gap areas that intersect at a preset angle in the third conductor structure.

[0064] By creating two intersecting first slot regions within the third conductor structure, the two first slot regions and the third conductor structure can resonate in different frequency bands. This gives the reflector unit, constructed from the dielectric substrate and the third conductor structure, a high-frequency bandpass characteristic. Consequently, when a high-frequency signal reaches the reflector unit, reflection at the reflector unit is reduced, and the high-frequency signal is transmitted. Conversely, when a low-frequency signal reaches the reflector unit, it is reflected. Using this reflector unit as a component of the first reflector 101 in an antenna effectively improves the radiation pattern of the high-frequency radiating element.

[0065] Please refer to Figure 3 The diagram illustrates the structure of a second type of reflector unit provided in this application embodiment. The reflector unit includes a dielectric substrate 301 and a third conductor structure 302 including a second hollow region 303. The lengths of the two first slit regions constituting the second hollow region 303 are equal to half the target wavelength, where the target wavelength is the wavelength of the center frequency point of the high-frequency band to which the antenna reflector operates. The intersection angle of the two first slit regions is 90 degrees.

[0066] As mentioned above, the third conductor structure 302 can be a triangular, polygonal, circular, or irregular polygonal structure that includes the second hollowed-out region 303. Therefore, exemplarily, Figure 3 The example shown is of a quadrilateral dielectric substrate 301 and a quadrilateral third conductor structure 302, and is not intended to limit this application. The dielectric substrate 301 may also be of other shapes.

[0067] Specifically, the lengths of the two first slot regions constituting the second hollow region 303 are both half the wavelength of the center frequency of the high-frequency band in which the antenna to which the antenna reflector operates, and the two first slot regions intersect at 90 degrees. In other words, the second hollow region 303 refers to two slots formed in the third conductor structure 302, intersecting at ±45°, with a length approximately half the wavelength of the center frequency of the desired transmission frequency band. Thus, the combination of the two first slot regions and the third conductor structure 302 can generate resonance in different frequency bands, giving the reflector unit bandpass characteristics, transmitting the desired high-frequency signal and reflecting the desired low-frequency signal. It should be noted that the length of the first slot region can be a preset multiple of the desired transmission target wavelength; optionally, this preset multiple is between 0.4 and 0.6. The intersection angle of the two first slot regions is approximately 90 degrees; that is, the intersection angle can differ from 90 degrees within a certain range, as long as the reflector unit can transmit high-frequency signals and reflect low-frequency signals.

[0068] In this embodiment, no specific requirements are made on the size of the dielectric substrate 301 and the third conductor structure 302. On the basis of satisfying the requirement that the reflector unit transmits high-frequency signals and reflects low-frequency signals, the components of the reflector unit can be small enough to increase the integration of the antenna reflector and meet the requirements of antenna miniaturization, high integration and high performance.

[0069] Optional, such as Figure 3 As shown, a quadrilateral spatial region may overlap at the intersection of the two first gap regions. Optionally, the quadrilateral spatial region may also be circular or other shapes. This application embodiment does not specifically limit this.

[0070] In the third structure, the reflector unit includes a metal reflector assembly; the metal reflector assembly includes a third hollow area, which includes two second slit areas that intersect each other.

[0071] Among them, the metal reflective component can be used to reflect signals. It can be made of metal materials with signal reflective properties, such as silver, copper, aluminum, etc.

[0072] Optionally, the metal reflective component can be a triangular, polygonal, circular, or irregular polygonal structure containing the third hollow area. The third hollow area includes two second slit areas that intersect each other. In other words, the third hollow area is formed by opening two second slit areas that intersect at a preset angle in the metal reflective component.

[0073] By creating two intersecting second slot regions within the metal reflector assembly, these two second slot regions can resonate with the metal reflector assembly in different frequency bands. This gives the reflector unit, constructed from the metal reflector assembly, a high-frequency bandpass characteristic. Consequently, when a high-frequency signal reaches the reflector unit, reflection at the reflector unit is reduced, and the high-frequency signal is transmitted. Conversely, when a low-frequency signal reaches the reflector unit, it is reflected. Using this reflector unit as a component of the first reflector 101 in an antenna effectively improves the radiation pattern of the high-frequency radiating element.

[0074] Please refer to Figure 4 The diagram illustrates the structure of a third type of reflector unit provided in this application embodiment. The reflector unit is a metal reflective component 401 including a third hollow region 402. The lengths of the two second slit regions constituting the third hollow region are equal to a preset multiple of the target wavelength. The target wavelength is the wavelength of the center frequency point of the high-frequency band to which the antenna to which the reflector belongs operates. The intersection angle of the two second slit regions is 90 degrees.

[0075] As mentioned above, the metal reflective component 401 can be a triangular, polygonal, circular, or irregular polygonal structure containing the third hollowed-out region 402. Therefore, exemplarily, Figure 4 The example given is of a quadrilateral metal reflective component 401, but it is not intended to limit this application.

[0076] Specifically, the lengths of the two second slit regions constituting the third hollow region 402 can each be a preset multiple of the wavelength of the center frequency point of the high-frequency band to which the antenna of the antenna reflector operates, and the two second slit regions intersect at 90 degrees. Optionally, the preset multiple is between 0.4 and 0.6. The two second slit regions intersecting at 90 degrees is also equivalent to the two second slit regions intersecting at ±45°. In other words, the third hollow region 402 refers to two slits formed in the metal reflector assembly 401, intersecting at ±45°, with a length approximately 0.4 to 0.6 times the wavelength of the center frequency point of the desired transmission frequency band. Thus, the two second slit regions and the metal reflector assembly 401 can resonate in different frequency bands, giving the reflector unit bandpass characteristics, transmitting the desired high-frequency signals and reflecting the desired low-frequency signals. The intersection angle of the two second gap regions is approximately 45 degrees. That is, the intersection angle can be within a certain range of 45 degrees, as long as the reflector unit can transmit high-frequency signals and reflect low-frequency signals.

[0077] In this application embodiment, no specific requirements are made on the size of the metal reflector component 401. On the basis of satisfying the requirement that the reflector unit transmits high-frequency signals and reflects low-frequency signals, the metal reflector component 401 can be small enough to increase the integration of the antenna reflector and meet the requirements of antenna miniaturization, high integration and high performance.

[0078] Optional, such as Figure 4 As shown, a quadrilateral space region may overlap at the intersection of the two second gap regions, and other shaped space regions may overlap at the break points of the two second gap regions, together forming the third hollow region 402. Optionally, the quadrilateral space region may also be circular or other shapes.

[0079] In one embodiment, the antenna reflector includes at least one first reflector 101 and at least one second reflector 102.

[0080] In this embodiment, the antenna reflector can be formed by connecting a first reflector 101 and a second reflector. Optionally, it can also be formed by different numbers of first reflectors 101 and second reflectors.

[0081] Please refer to Figure 5 The diagram shows a structural schematic of a second type of antenna reflector provided in an embodiment of this application. The antenna reflector includes a first reflector 501 and a second reflector 502, wherein the first reflector 501 is composed of a plurality of reflector units 503.

[0082] Please refer to Figure 6 The diagram shows a structural schematic of a third type of antenna reflector provided in the embodiments of this application. The antenna reflector includes two first reflectors 601 and one second reflector 602, wherein the first reflector 601 is composed of a plurality of reflector units 603.

[0083] Please refer to Figure 7 The diagram shows a structural schematic of a fourth type of antenna reflector provided in the embodiments of this application. The antenna reflector includes a second reflector 701 and two first reflectors 702. The second reflector 701 includes a first reflector portion 703 and a second reflector portion 704, and the first reflector portion 703 and the second reflector portion 704 form a T-shape. The two first reflectors 702 are located on both sides of the first reflector portion 703.

[0084] The second reflector 701 may be T-shaped, and the first reflector portion 703 and the second reflector portion 704 refer to the two regions in the second reflector 701 that combine to form a T-shape.

[0085] The antenna reflector provided in this application helps to optimize the radiation pattern distortion of the high-frequency antenna array caused by the increased reflector area, while providing a sufficiently large reflecting surface for the low-frequency antenna array. This antenna reflector has a simple structure, making it easy to arrange on a multi-system shared antenna, including both high-frequency and low-frequency antennas, thus reducing the size of the multi-system shared antenna and increasing its integration.

[0086] In addition, as mentioned above, for Figure 5 , Figure 6 as well as Figure 7 The three antenna reflectors illustrated all have a first reflector composed of multiple reflector units. For a clearer understanding of each first reflector, as shown... Figure 8 As shown in the illustration, this application also provides a partial structural diagram of a first reflector, which is composed of... Figure 8 The specific structure of each reflector unit included in the first reflector can be clearly seen. Of course, it should be noted that... Figure 8 The diagram only illustrates one structure of each reflector unit included in the first reflector, and the structure of each reflector unit can of course be the reflector unit structure provided in any of the embodiments above.

[0087] In one embodiment, an antenna is provided, which includes an antenna reflector as described in any of the above embodiments; the antenna also includes a low-frequency radiator and a high-frequency radiator, which are located on the antenna reflector.

[0088] The low-frequency radiator in the antenna is used to transmit and receive low-frequency signals, the high-frequency radiator is used to transmit and receive high-frequency signals, and the antenna reflector is used to improve the antenna's signal reception sensitivity.

[0089] In one embodiment, the low-frequency radiator may be located above the first reflector of the antenna reflector, and the high-frequency radiator may be located above the second reflector of the antenna reflector. The low-frequency radiator includes multiple low-frequency radiating elements arranged in an array, and the high-frequency radiator includes multiple high-frequency radiating elements arranged in an array.

[0090] In this context, a low-frequency radiator is a low-frequency antenna array composed of multiple low-frequency radiating elements arranged in an array, while a high-frequency radiator is a high-frequency antenna array composed of multiple high-frequency radiating elements arranged in an array. A radiating element is the basic structural unit of the antenna, used to effectively radiate or receive radio electromagnetic waves, enabling the antenna to transmit and receive signals.

[0091] Optionally, the antenna provided in this application embodiment can be a base station antenna used in a base station, or it can be other multi-system shared antennas used for transmitting and receiving high-frequency and low-frequency signals.

[0092] Optionally, with the axis of the low-frequency antenna array or the high-frequency antenna array as the vertical direction, the first and second reflectors of the antenna reflector are arranged in the corresponding horizontal direction.

[0093] Please refer to Figure 9 The illustration shows a schematic diagram of an antenna structure provided in an embodiment of this application. The antenna includes an antenna reflector composed of two first reflectors 901 and a second reflector 902, a low-frequency radiator composed of an array of multiple low-frequency radiating elements 903, and a high-frequency radiator composed of an array of multiple high-frequency radiating elements 904. Optionally, such as... Figure 9 As shown, the low-frequency radiating element 903 can be connected to the second reflector through a metal support structure and is located on top of the first reflector, thus stabilizing the overall antenna structure. The high-frequency radiating element 904 is connected to the second reflector through a metal support structure and is located on top of the second reflector. It should be noted that... Figure 9 Taking the example of an antenna reflector consisting of two first reflectors and one second reflector connected together, in reality, the antenna reflector may include one or more first reflectors and second reflectors, and this application does not specifically limit this.

[0094] In one embodiment, the low-frequency radiator is located above the first and second reflectors of the antenna reflector, and the high-frequency radiator is located above the second reflector of the antenna reflector.

[0095] Please refer to Figure 10 The diagram illustrates the structure of another antenna provided in this application embodiment. This antenna includes an antenna reflector composed of two first reflectors 1001 and a second reflector 1002, a low-frequency radiator composed of an array of multiple low-frequency radiating elements 1003, and a high-frequency radiator composed of an array of multiple high-frequency radiating elements 1004. Optionally, such as... Figure 10 As shown, some low-frequency radiating elements 1003 in the low-frequency radiator can be connected to the second reflector through a metal support structure and located on the first reflector to stabilize the overall antenna structure. Meanwhile, another portion of the low-frequency radiating elements 1003 can be located on the second reflector, for example, as shown in... Figure 10 The other low-frequency radiating element 1003 shown may be located above the second reflector portion of the second reflector. Each high-frequency radiating element 1004 in the high-frequency radiator is connected to the second reflector via a metal support structure and is located above the second reflector, for example... Figure 10 Each high-frequency radiating element 1004 in the high-frequency radiator shown is located above the first reflector portion of the second reflector.

[0096] The two types of antennas constructed from antenna reflectors described above can improve the distortion of the radiation pattern of high-frequency antenna arrays without affecting the radiation pattern of low-frequency antenna arrays. They also facilitate increasing the integration of antennas and reducing their size, which is beneficial for base station antennas to meet the requirements of miniaturization and high integration.

[0097] In one embodiment, a communication device is also provided, which includes an antenna as described in any of the above embodiments. For example, the communication device can be a base station, and correspondingly, the antenna can be a base station antenna. Of course, the communication device can also be other types of devices that include an antenna, and the embodiments of this application do not specifically limit it here.

[0098] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0099] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. An antenna reflector, characterized in that, The antenna reflector includes several interconnected first reflectors and second reflectors; The first reflector has the characteristic of being able to transmit high-frequency signals and reflect low-frequency signals, and the second reflector has the characteristic of being able to reflect both high-frequency signals and low-frequency signals. When both the high-frequency radiation unit and the low-frequency radiation unit are located on the antenna reflector, the low-frequency signal is reflected by both the first reflector and the second reflector for the low-frequency radiation unit. For the high-frequency radiation unit, the first reflector is used to transmit the high-frequency signal, while only the second reflector is used to reflect the high-frequency signal, so as to reduce the reflection area of ​​the high-frequency signal.

2. The antenna reflector according to claim 1, characterized in that, The first reflector includes multiple reflector units arranged in an array; The reflector unit is used to reflect low-frequency signals and transmit high-frequency signals.

3. The antenna reflector according to claim 2, characterized in that, The reflector unit includes a dielectric substrate and a first conductor structure and a second conductor structure disposed on the dielectric substrate; the first conductor structure includes a first hollow area. The second conductor structure is located within the first hollow area and has a gap between it and the first conductor structure. The first conductor structure and the second conductor structure are electrically coupled based on the gap.

4. The antenna reflector according to claim 2, characterized in that, The reflector unit includes a dielectric substrate and a third conductor structure disposed on the dielectric substrate; The third conductor structure includes a second hollow area, which includes two first gap areas that intersect each other.

5. The antenna reflector according to claim 4, characterized in that, The length of the first gap region is equal to a preset multiple of the target wavelength, where the target wavelength is the wavelength of the center frequency point of the high-frequency band to which the antenna to which the antenna reflector belongs operates; the intersection angle of the two first gap regions is 90 degrees.

6. The antenna reflector according to claim 2, characterized in that, The reflector unit includes a metal reflector assembly; The metal reflective component includes a third hollow area, which includes two second gap areas that intersect each other.

7. The antenna reflector according to claim 6, characterized in that, The length of the second gap region is equal to a preset multiple of the target wavelength, where the target wavelength is the wavelength of the center frequency point of the high-frequency band to which the antenna to which the antenna reflector belongs operates; the intersection angle of the two second gap regions is 90 degrees.

8. The antenna reflector according to any one of claims 1 to 7, characterized in that, The antenna reflector includes at least one first reflector and at least one second reflector.

9. The antenna reflector according to any one of claims 1 to 7, characterized in that, The antenna reflector includes one second reflector and two first reflectors; The second reflector includes a first reflector portion and a second reflector portion, which form a T-shape; the two first reflectors are located on both sides of the first reflector portion.

10. An antenna, characterized in that, The antenna includes an antenna reflector as described in any one of claims 1 to 9; the antenna further includes a low-frequency radiator and a high-frequency radiator, the low-frequency radiator and the high-frequency radiator being located on the antenna reflector.

11. The antenna according to claim 10, characterized in that, The low-frequency radiator is located on the first reflector of the antenna reflector, and the high-frequency radiator is located on the second reflector of the antenna reflector.

12. The antenna according to claim 10, characterized in that, The low-frequency radiator is located on the first and second reflectors of the antenna reflector, and the high-frequency radiator is located on the second reflector of the antenna reflector.

13. The antenna according to any one of claims 10 to 12, characterized in that, The low-frequency radiator includes multiple low-frequency radiating units arranged in an array, and the high-frequency radiator includes multiple high-frequency radiating units arranged in an array.

14. A communication device, characterized in that, The communication device includes the antenna as described in any one of claims 10 to 13.

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