Base station antenna with high pilot frequency isolation capability

Abstract

The invention relates to the technical field of communication, in particular to a base station antenna with high pilot frequency isolation capability. The base station antenna with the high pilot frequency isolation capability comprises a dielectric component, a metal layer, a first patch, two feed networks and four first feed components, wherein the dielectric component comprises a first dielectric substrate, a second dielectric substrate and a third dielectric substrate which are arranged in sequence. The two feed networks are used for jointly feeding in a pair of differential signals; each feed network is provided with two feed branches, and the feed branches are used for converting a pair of differential signals into two pairs of differential signals together. The first feed assembly comprises a first disc and a first connecting piece, and the first connecting piece correspondingly connects the feed branches with the first disc through the first dielectric substrate, the metal layer and the second dielectric substrate in sequence so as to feed each differential signal into the first disc. According to the base station antenna with the high pilot frequency isolation capability, the pilot frequency isolation capability of the base station antenna is improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a base station antenna with high heterodyne frequency isolation capability. Background Art

[0002] The base station antenna of this application is a key component for sending and receiving radio signals in a wireless communication system, and can transmit wireless signals between the base station and mobile devices. Different mobile communication technologies use different frequency bands. By covering multiple frequency bands, backward compatibility of the network can be achieved. In order to achieve multi-frequency coverage, multiple base station antennas with different frequency bands are generally installed on the same base station.

[0003] In the prior art, a base station antenna includes a feeding network and a radiating unit. The RF device of the base station generates a RF signal, which is transmitted to the radiating unit through the feeding network. The radiating unit then converts the RF signal into an electromagnetic wave and propagates it through the air to the mobile terminal.

[0004] However, multiple base station antennas will generate unnecessary harmonics during operation, thereby interfering with the signals of adjacent antenna channels. Summary of the invention

[0005] The present application provides a base station antenna with high frequency isolation capability, thereby improving the frequency isolation capability of the base station antenna.

[0006] The base station antenna with high frequency isolation capability provided in the present application includes: a dielectric component, a metal layer, a first patch, two feeding networks and four first feeding components, and the dielectric component includes a first dielectric substrate, a second dielectric substrate and a third dielectric substrate arranged in sequence.

[0007] The metal layer is arranged between the first dielectric substrate and the second dielectric substrate; the first patch is arranged on a side of the third dielectric substrate away from the second dielectric substrate.

[0008] Two feeding networks are arranged on the side of the first dielectric substrate away from the metal layer, and the two feeding networks are used to feed a pair of differential signals together; each feeding network has two feeding branches, and each feeding branch is used to convert a pair of differential signals into two pairs of differential signals.

[0009] The first feeding component includes a first disk and a first connecting member. The first disk is arranged between the second dielectric substrate and the third dielectric substrate. The first disk is coupled to the first patch via the third dielectric substrate. The first connecting member connects the feeding branch to the first disk correspondingly via the first dielectric substrate, the metal layer and the second dielectric substrate in sequence, so as to feed each differential signal into the first disk.

[0010] In a possible implementation, in the base station antenna with high frequency isolation capability provided by the present application, each feeding branch is symmetrically arranged along the center of the first dielectric substrate.

[0011] In a possible implementation, the base station antenna with high frequency isolation capability provided in the present application further includes a second patch and four second feeding components, and the dielectric component further includes a fourth dielectric substrate, which is arranged on a side of the first patch away from the third dielectric substrate.

[0012] The second patch is arranged on a side of the fourth dielectric substrate away from the first patch, and each second feeding assembly connects the first patch to the second patch via the fourth dielectric substrate.

[0013] In a possible implementation, in the base station antenna with high frequency isolation capability provided by the present application, the second feeding component and the first connecting component are arranged in a one-to-one correspondence.

[0014] In one possible implementation, the base station antenna with high frequency isolation capability provided by the present application, the second feeding component includes at least one second disk and at least one second connecting member, the second disk and the second connecting member are both arranged in a fourth dielectric substrate, the second connecting member is inserted into the second disk, and the first patch is coupled to the second patch through the second connecting member.

[0015] In a possible implementation, the base station antenna with high frequency isolation capability provided by the present application has a second patch with a plurality of open loops, and the second connector is coupled to the second patch through the open loops.

[0016] In a possible implementation, in the base station antenna with high frequency isolation capability provided by the present application, the first patch and the second patch are both ring-shaped.

[0017] In a possible implementation, in the base station antenna with high heterodyne frequency isolation capability provided by the present application, the first patch and the second patch are coaxially arranged.

[0018] In a possible implementation, in the base station antenna with high frequency isolation capability provided by the present application, the edges corresponding to the first patch and the second patch are flush.

[0019] In a possible implementation, in the base station antenna with high frequency isolation capability provided by the present application, the metal layer is a copper plate or an aluminum plate.

[0020] The base station antenna with high frequency isolation capability provided by the present application is provided with a dielectric component, a metal layer, a first patch, two feeding networks and four first feeding components, wherein the dielectric component includes a first dielectric substrate, a second dielectric substrate and a third dielectric substrate which are arranged in sequence. The metal layer is arranged between the first dielectric substrate and the second dielectric substrate; the first patch is arranged on the side of the third dielectric substrate away from the second dielectric substrate. Both feeding networks are arranged on the first dielectric substrate, and the two feeding networks are used to feed a pair of differential signals together; two feeding branches are provided on the feeding network to convert a pair of differential signals into two pairs of differential signals. The first feeding component includes a first disk and a first connecting member, and the first disk is arranged between the second dielectric substrate and the third dielectric substrate. The first connecting member connects the feeding branch to the first disk correspondingly to feed each differential signal into the first disk, and each first disk is coupled with the first patch, thereby realizing multi-point feeding, which can be used in the basic working mode TM required to stimulate the base station antenna. 11 At the same time, it can effectively suppress the harmonic mode, thereby improving the inter-frequency isolation capability of the base station antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the structure of a base station antenna with high frequency isolation capability provided in an embodiment of the present application;

[0023] Figure 2 for Figure 1 A schematic diagram of the structure from another angle;

[0024] Figure 3 for Figure 1 Schematic diagram of the internal structure;

[0025] Figure 4 A schematic diagram of scattering parameters and actual gain of a base station antenna with high frequency isolation capability provided in an embodiment of the present application;

[0026] Figure 5 The radiation pattern of the base station antenna with high frequency isolation capability at 2.24 GHz provided in the embodiment of the present application;

[0027] Figure 6 The radiation pattern of the base station antenna with high frequency isolation capability at 2.32 GHz provided in an embodiment of the present application.

[0028] Description of reference numerals:

[0029] 100 - dielectric component; 110 - first dielectric substrate; 120 - second dielectric substrate; 130 - third dielectric substrate; 140 - fourth dielectric substrate;

[0030] 200-metal layer;

[0031] 300-first patch;

[0032] 400-feeding network; 410-feeding branch;

[0033] 500 - first feeding assembly; 510 - first disk; 520 - first connecting member;

[0034] 600-second patch; 610-open circuit small ring;

[0035] 700 - second feeding assembly; 710 - second disc; 720 - second connecting member.

[0036] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0037] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0038] Secondly, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] Then, it should be noted that, in the description of the present application, the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0041] As shown in the background technology, in the prior art, the base station antenna includes a feeding network and a radiation unit. The RF equipment of the base station generates a RF signal, which is transmitted to the radiation unit through the feeding network. The radiation unit then converts the RF signal into an electromagnetic wave and propagates it through the air to the mobile terminal.

[0042] However, multiple base station antennas will generate unnecessary harmonics during operation, thereby interfering with the signals of adjacent antenna channels.

[0043] Based on this, the base station antenna with high frequency isolation capability provided by the present application is provided, by setting a dielectric component, a metal layer, a first patch, two feeding networks and four first feeding components, the dielectric component includes a first dielectric substrate, a second dielectric substrate and a third dielectric substrate arranged in sequence. The metal layer is arranged between the first dielectric substrate and the second dielectric substrate; the first patch is arranged on the side of the third dielectric substrate away from the second dielectric substrate. Both feeding networks are arranged on the first dielectric substrate, and the two feeding networks are used to feed a pair of differential signals together; two feeding branches are provided on the feeding network to convert a pair of differential signals into two pairs of differential signals. The first feeding component includes a first disk and a first connecting member, and the first disk is arranged between the second dielectric substrate and the third dielectric substrate. The first connecting member connects the feeding branch to the first disk accordingly to feed each differential signal into the first disk, and each first disk is coupled with the first patch, thereby realizing multi-point feeding, which can be used in the basic working mode TM required to stimulate the base station antenna. 11 At the same time, it can effectively suppress the harmonic mode, thereby improving the inter-frequency isolation capability of the base station antenna.

[0044] It should be noted that a pair of differential signals refers to a signal transmission method used in circuit design and communication systems. A pair of differential signals consists of two wires, one of which transmits the positive polarity of the signal (usually called a positive signal or a non-inverting signal), and the other wire transmits the negative polarity of the signal (usually called a negative signal or an inverting signal). The voltage difference between the two signal lines is the actual transmitted signal.

[0045] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0046] The base station antenna with high frequency isolation capability provided by the present application is referred to Figures 1 to 3 As shown, it includes: a dielectric component 100, a metal layer 200, a first patch 300, two feeding networks 400 and four first feeding components 500. The dielectric component 100 includes a first dielectric substrate 110, a second dielectric substrate 120 and a third dielectric substrate 130 which are arranged in sequence.

[0047] The metal layer 200 is disposed between the first dielectric substrate 110 and the second dielectric substrate 120 ; the first patch 300 is disposed on a side of the third dielectric substrate 130 away from the second dielectric substrate 120 .

[0048] Two feeding networks 400 are both arranged on a side of the first dielectric substrate 110 away from the metal layer 200, and the two feeding networks 400 are used to feed a pair of differential signals together; each feeding network 400 has two feeding branches 410, and each feeding branch 410 is used to convert a pair of differential signals into two pairs of differential signals.

[0049] The first feeding assembly 500 includes a first disk 510 and a first connector 520. The first disk 510 is disposed between the second dielectric substrate 120 and the third dielectric substrate 130. The first disk 510 is coupled to the first patch 300 via the third dielectric substrate 130. The first connector 520 connects the feeding branch 410 to the first disk 510 via the first dielectric substrate 110, the metal layer 200, and the second dielectric substrate 120 in sequence, so as to feed each differential signal into the first disk 510.

[0050] It should be noted that the feed network 400 of the base station antenna is fed by a pair of differential signals. By setting two feed branches 410 on the feed network 400, after impedance matching transformation of the power division structure, the pair of differential signals can be divided into two pairs of differential signals. Due to the symmetry of the feed network 400, the two signals located on the same feed network 400 (i.e., on the same side of the first dielectric substrate 110) are equal-amplitude in-phase signals, and the two signals located on different feed networks 400 (i.e., on different sides of the first dielectric substrate 110) are equal-amplitude anti-phase signals.

[0051] Next, four first feeding components 500 are provided, the first feeding components 500 include a first disk 510 and a first connector 520, each first connector 520 feeds the differential signal on the feeding branch 410 into the first disk 510 via the metal layer 200, and each first disk 510 is coupled with the first patch 300, that is, four feeding points are provided on the first patch 300, and multi-point feeding can be realized, which can be used in the basic working mode TM required for exciting the base station antenna. 11 (a specific electromagnetic wave mode), while achieving effective suppression of harmonic modes without introducing any additional components, thereby improving the inter-frequency isolation capability of the base station antenna.

[0052] It should also be noted that by providing the metal layer 200 between the first dielectric substrate 110 and the second dielectric substrate 120, the metal layer 200 can act as a shielding layer to reduce coupling and interference between signals of different frequencies. It can not only block the interference of external electromagnetic fields on internal signals, but also prevent internal signals from radiating outward, thereby improving the signal integrity and stability of the antenna. The metal layer 200 can also act as a reflective surface to help guide and enhance signal radiation in a specific direction, thereby improving the gain and directivity of the antenna.

[0053] In a specific implementation, the first connector 520 passes through the metal layer 200 to connect the feed branch 410 and the first disk 510. The metal layer 200 and the feed branch 410 may be provided with an annular opening so that the first connector 520 does not directly contact them. For example, the first connector 520 may be a pin.

[0054] The feed network 400, the first dielectric substrate 110, the metal layer 200, the second dielectric substrate 120, the first disk 510, the third dielectric substrate 130 and the first patch 300 can all be connected by bonding. On the one hand, the impedance discontinuity at the connection can be reduced, and the radiation efficiency and gain of the antenna can be improved. On the other hand, the bonding is relatively firm and is not easy to loosen or fall off.

[0055] The material of the first dielectric substrate 110, the second dielectric substrate 120 and the third dielectric substrate 130 can be a flame retardant copper clad laminate, which has good mechanical strength, can withstand large external forces, and is not easily deformed. The flame retardant copper clad laminate also has good flame retardancy and high safety. In addition, the dielectric constant and loss factor of the flame retardant copper clad laminate are relatively stable, thereby reducing the attenuation and distortion of the signal during transmission and improving the transmission quality of the signal.

[0056] It can be understood that compared with the prior art, multiple base station antennas will generate unnecessary harmonics during operation. The base station antenna with high frequency isolation capability provided by the present application is provided with a dielectric component 100, a metal layer 200, a first patch 300, two feeding networks 400 and four first feeding components 500, and the dielectric component 100 includes a first dielectric substrate 110, a second dielectric substrate 120 and a third dielectric substrate 130 arranged in sequence. The metal layer 200 is arranged between the first dielectric substrate 110 and the second dielectric substrate 120; the first patch 300 is arranged on the side of the third dielectric substrate 130 away from the second dielectric substrate 120. Both feeding networks 400 are arranged on the first dielectric substrate 110, and the two feeding networks 400 are used to feed a pair of differential signals together; two feeding branches 410 are provided on the feeding network 400 to convert a pair of differential signals into two pairs of differential signals. The first feeding assembly 500 includes a first disk 510 and a first connector 520. The first disk 510 is disposed between the second dielectric substrate 120 and the third dielectric substrate 130. The first connector 520 connects the feeding branch 410 to the first disk 510 to feed each differential signal into the first disk 510. Each first disk 510 is coupled to the first patch 300, thereby realizing multi-point feeding, which can be used in the basic working mode TM required for exciting the base station antenna. 11 At the same time, it can effectively suppress the harmonic mode, thereby improving the inter-frequency isolation capability of the base station antenna.

[0057] In some embodiments, reference Figure 2 As shown, the feeding branches 410 are symmetrically arranged along the center of the first dielectric substrate 110 .

[0058] It should be noted that a symmetrical feeding structure helps to achieve good impedance matching, reduce reflection loss, and improve the bandwidth and gain of the base station antenna, so that it can work effectively in a wider frequency range.

[0059] The centrally symmetrical feeding branch 410 can also realize balanced feeding, which helps to reduce the common mode current of the base station antenna, thereby reducing the radiation loss and interference of the antenna and improving the efficiency and performance of the antenna. It should also be noted that in a multi-antenna system, a symmetrical feeding design can reduce the mutual coupling between the antennas.

[0060] In some embodiments, reference Figure 1 and Figure 3 As shown, the base station antenna with high frequency isolation capability further includes a second patch 600 and four second feeding components 700 . The dielectric component 100 further includes a fourth dielectric substrate 140 . The fourth dielectric substrate 140 is arranged on a side of the first patch 300 away from the third dielectric substrate 130 .

[0061] The second patch 600 is disposed on a side of the fourth dielectric substrate 140 away from the first patch 300 , and each second feeding assembly 700 connects the first patch 300 to the second patch 600 via the fourth dielectric substrate 140 .

[0062] It should be noted that the structure of the first patch 300 and the second patch 600 stacked in upper and lower layers can improve the impedance matching characteristics of the base station antenna, reduce reflection loss, and reduce the influence of surface waves, thereby improving the radiation efficiency of the base station antenna and broadening the bandwidth of the base station antenna.

[0063] It should also be noted that by providing four second feeding components 700 to connect the first patch 300 with the second patch 600, the coupling strength between the first patch 300 and the second patch 600 can be enhanced. Multiple feeding points can also help achieve good impedance matching in a wider frequency range, reduce reflection loss, and improve the efficiency of the base station antenna.

[0064] In some embodiments, reference Figure 3 As shown, the second feeding assembly 700 and the first connecting member 520 are arranged in a one-to-one correspondence.

[0065] It should be noted that the second feeding components 700 are arranged in a one-to-one correspondence with the first connecting member 520, that is, each second feeding component 700 is located on the same vertical line as the first connecting member 520, which can optimize the impedance matching so that the base station antenna mainly excites the basic working mode TM required 11 mode while suppressing other unwanted modes, thus achieving better inter-frequency isolation.

[0066] In some embodiments, reference Figure 3 As shown, the second feeding assembly 700 includes at least one second disk 710 and at least one second connector 720. The second disk 710 and the second connector 720 are both arranged in the fourth dielectric substrate 140. The second connector 720 is inserted on the second disk 710. The first patch 300 and the second patch 600 are coupled through the second connector 720.

[0067] It can be understood that by providing the second disk 710 and the second connector 720, a stable coupling can be achieved between the first patch 300 and the second patch 600, thereby improving the performance of the base station antenna. It should be noted that by adjusting the size and position of the second disk 710 and the second connector 720, the coupling strength can be accurately controlled, thereby optimizing the frequency response and bandwidth of the base station antenna.

[0068] In a specific implementation, by changing the number of the second disks 710 and the second connectors 720, better impedance matching can be achieved, reflection loss can be reduced, and the efficiency of the antenna can be improved. Exemplarily, each second feeding assembly 700 may include a second disk 710 and a second connector 720; each second feeding assembly 700 may also include two second disks 710 and two second connectors 720; each second feeding assembly 700 may also include four second disks 710 and four second connectors 720; the second disks 710 and the second connectors 720 may also be more than four, and the embodiment of the present application does not impose too many restrictions on this. It should be noted that the second connector 720 may be a pin.

[0069] In some embodiments, reference Figure 3 As shown, a plurality of open small rings 610 are provided on the second patch 600 , and the second connecting member 720 is coupled to the second patch 600 through the open small rings 610 .

[0070] It should be noted that the open loop 610 acts as a capacitive element in the circuit, and its capacitance value can be precisely adjusted by changing the size, shape and position of the open loop 610 .

[0071] Specifically, by connecting an open-circuit small loop 610 to the terminal of each second connector 720 , the capacitive coupling strength between the second connector 720 and the second patch 600 can be adjusted.

[0072] It should also be noted that the first connector 520, the first disk 510, the second connector 720, the second disk 710 and the open circuit ring 610 are arranged in the high-order resonance mode TM of the first patch 300 and the second patch 600. 31 The virtual electric wall.

[0073] In some embodiments, reference Figure 1 and Figure 3 As shown, the first patch 300 and the second patch 600 are both ring-shaped.

[0074] It should be noted that the ring structure can provide better impedance matching characteristics, reduce reflection loss, and improve the efficiency of the base station antenna.

[0075] By changing the geometric parameters (such as radius) of the first ring-shaped patch 300 and the second ring-shaped patch 600, the impedance characteristics of the base station antenna can be conveniently adjusted to achieve better matching.

[0076] In some embodiments, reference Figure 3 As shown, the first patch 300 and the second patch 600 are coaxially arranged.

[0077] Specifically, the coaxial setup reduces unnecessary reflections and losses, helps achieve more uniform current distribution and better impedance matching, and can also effectively reduce parasitic capacitance and inductance effects, reducing unnecessary mode excitation and frequency interference.

[0078] In some embodiments, reference Figure 3 As shown, the corresponding edges of the first patch 300 and the second patch 600 are flush.

[0079] It can be understood that the corresponding edges of the first patch 300 and the second patch 600 are flush, that is, the first patch 300 and the second patch 600 have the same size, which can form a stable working frequency band, which is conducive to adjusting impedance matching.

[0080] In some embodiments, reference Figure 1 As shown, the metal layer 200 is a copper plate or an aluminum plate.

[0081] It should be noted that copper plates have good electrical conductivity, thermal conductivity and high mechanical strength, and can withstand greater tension and pressure. Aluminum plates are lighter, cheaper and have a smooth surface, which can reduce the reflection and scattering of electromagnetic waves and improve the gain and directivity of the antenna.

[0082] In specific implementation, the first patch 300, the first disk 510, the second patch 600, the second disk 710 and the feeding network 400 can all be made of copper plates or aluminum plates, or other plates, and the embodiment of the present application does not impose too many restrictions on this.

[0083] Reference Figure 4 As shown, the base station antenna with high frequency isolation capability provided in the embodiment of the present application is S 11 The frequency coverage range under the ≤-10dB standard is 2.23-2.37GHz, and the relative bandwidth at the center frequency of 2.3GHz is about 6.1%. Specifically, the base station antenna with high frequency isolation capability broadens its working bandwidth by introducing an extra radiation pole, providing the antenna with a wider frequency coverage range in practical applications, making it more environmentally adaptable and practical. In addition, the antenna is excited in the basic working mode TM by multi-point feeding. 11 At the same time, it inhibits a series of 11 ,TM 21 and TM31 The high-order resonant modes form an upper stopband extending to 2.83 times the center operating frequency (2.3GHz). The actual gain curve further confirms this point. The maximum radiation direction of the antenna in the operating frequency band (θ=0°, φ=0°) presents a smooth curve, and the actual gain in the band remains at 6.5dBi.

[0084] Reference Figure 5 and Figure 6 As shown, the base station antenna with high frequency isolation capability provided by the embodiment of the present application has consistent radiation directivity within the working frequency band, and provides directional radiation in the direction perpendicular to the XY plane on the E plane and the H plane. The cross-polarization suppression level of the base station antenna is about 30dB, showing good low cross-polarization characteristics.

[0085] It can be understood by those skilled in the art that the base station antenna with high frequency isolation capability provided by the present application is provided with a dielectric component 100, a metal layer 200, a first patch 300, two feeding networks 400 and four first feeding components 500, and the dielectric component 100 includes a first dielectric substrate 110, a second dielectric substrate 120 and a third dielectric substrate 130 arranged in sequence. The metal layer 200 is arranged between the first dielectric substrate 110 and the second dielectric substrate 120; the first patch 300 is arranged on the side of the third dielectric substrate 130 away from the second dielectric substrate 120. Both feeding networks 400 are arranged on the first dielectric substrate 110, and the two feeding networks 400 are used to feed a pair of differential signals together; two feeding branches 410 are provided on the feeding network 400 to convert a pair of differential signals into two pairs of differential signals. The first feeding component 500 includes a first disk 510 and a first connector 520, and the first disk 510 is arranged between the second dielectric substrate 120 and the third dielectric substrate 130. The first connector 520 connects the feeding branch 410 to the first disk 510 to feed each differential signal into the first disk 510. Each first disk 510 is coupled to the first patch 300, thereby realizing multi-point feeding, which can be used in the basic working mode TM required for exciting the base station antenna. 11 At the same time, it can effectively suppress the harmonic mode, thereby improving the inter-frequency isolation capability of the base station antenna.

[0086] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0087] It should be understood that the various numerical numbers involved in the embodiments of the present application are only used for the convenience of description and are not used to limit the scope of the embodiments of the present application.

[0088] So far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present application.

Claims

1. A base station antenna with high frequency isolation capability, characterized in that: include: A dielectric component (100), the dielectric component (100) comprising a first dielectric substrate (110), a second dielectric substrate (120), and a third dielectric substrate (130) which are arranged in sequence; A metal layer (200) is provided between the first dielectric substrate (110) and the second dielectric substrate (120); A first patch (300) is arranged on a side of the third dielectric substrate (130) facing away from the second dielectric substrate (120); Two feeding networks (400) are both arranged on a side of the first dielectric substrate (110) away from the metal layer (200), and the two feeding networks (400) are used to feed a pair of differential signals together; each feeding network (400) has two feeding branches (410), and each feeding branch (410) is used to convert a pair of differential signals into two pairs of differential signals together; Four first feeding assemblies (500), wherein the first feeding assemblies (500) comprise: A first circular disk (510) is arranged between the second dielectric substrate (120) and the third dielectric substrate (130), wherein the first circular disk (510) is coupled to the first patch (300) via the third dielectric substrate (130); The first connecting member (520) connects the feeding branch (410) and the first disk (510) correspondingly via the first dielectric substrate (110), the metal layer (200) and the second dielectric substrate (120) in sequence, so as to feed each differential signal into the first disk (510).

2. The base station antenna with high frequency isolation capability according to claim 1, characterized in that: The feeding branches (410) are symmetrically arranged along the center of the first dielectric substrate (110).

3. The base station antenna with high frequency isolation capability according to claim 1, characterized in that: It also includes a second patch (600) and four second feeding components (700), and the dielectric component (100) further includes a fourth dielectric substrate (140), and the fourth dielectric substrate (140) is arranged on a side of the first patch (300) facing away from the third dielectric substrate (130); The second patch (600) is arranged on a side of the fourth dielectric substrate (140) facing away from the first patch (300), and each second feeding component (700) connects the first patch (300) to the second patch (600) via the fourth dielectric substrate (140).

4. The base station antenna with high frequency isolation capability according to claim 3, characterized in that: The second feeding assembly (700) and the first connecting member (520) are arranged in a one-to-one correspondence.

5. The base station antenna with high frequency isolation capability according to claim 3, characterized in that: The second feeding component (700) comprises at least one second disk (710) and at least one second connecting member (720); the second disk (710) and the second connecting member (720) are both arranged in the fourth dielectric substrate (140); the second connecting member (720) is inserted into the second disk (710); and the first patch (300) and the second patch (600) are coupled via the second connecting member (720).

6. The base station antenna with high frequency isolation capability according to claim 5, characterized in that: The second patch (600) is provided with a plurality of open small rings (610), and the second connecting member (720) is coupled to the second patch (600) via the open small rings (610).

7. The base station antenna with high frequency isolation capability according to any one of claims 3 to 6, characterized in that: The first patch (300) and the second patch (600) are both ring-shaped.

8. The base station antenna with high frequency isolation capability according to claim 7, characterized in that: The first patch (300) and the second patch (600) are coaxially arranged.

9. The base station antenna with high frequency isolation capability according to claim 8, characterized in that: The corresponding edges of the first patch (300) and the second patch (600) are flush.

10. The base station antenna with high frequency isolation capability according to any one of claims 1 to 6, characterized in that: The metal layer (200) is a copper plate or an aluminum plate.

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