Feed network and antenna

Abstract

The utility model discloses a feed network and an antenna, and belongs to the technical field of antennas. The feed network comprises a transmission structure, a supporting structure and a ground structure, the transmission structure is fixed through the supporting structure, the transmission structure, the supporting structure and the ground structure at least can form one or more combinations of a microstrip line structure and a strip line structure, and the supporting structure is provided with a configuration reducing part for reducing the space occupation of the supporting structure. According to the utility model, the loss of the feed network can be reduced, and the performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, and particularly to a feeding network and an antenna with the feeding network. Background Art

[0002] The feeding network is an essential part of a base station antenna. It can feed signals to radiation elements according to certain amplitudes and phases, or send received signals to the processing unit of the base station according to certain amplitudes and phases.

[0003] Loss is one of the important factors affecting the performance of the feeding network. At present, when designing a feeding network, it is necessary to minimize or reduce the loss as much as possible to improve the performance of the feeding network. Therefore, how to reduce the loss of the feeding network to improve its performance is an urgent problem to be solved.

[0004] The information disclosed in this background art section is only intended to enhance the overall understanding of the utility model and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a feeding network that can reduce its loss and improve its performance.

[0006] To achieve the above purpose, an embodiment of the utility model provides a feeding network, including a transmission structure, a support structure, and a ground structure. The transmission structure is fixed by the support structure, and the transmission structure can form at least one or a combination of a microstrip line structure and a strip line structure with the support structure and the ground structure. The support structure is configured with a reduced configuration part for reducing its space occupation.

[0007] In one or more embodiments of the utility model, the support structure forms the reduced configuration part by reducing the thickness of at least part of the area.

[0008] In one or more embodiments of the utility model, the support structure includes a bearing surface, and the transmission structure is arranged on the bearing surface.

[0009] In one or more embodiments of the utility model, the transmission structure includes N transmission units, and at least a part of the N transmission units forms at least one or a combination of a microstrip line structure and a strip line structure with the support structure and the ground structure. N is an integer greater than zero.

[0010] In one or more embodiments of the present utility model, the ground structure includes M ground units, and at least a part of the M ground units form one or more combinations of a microstrip line structure and a stripline structure with the transmission structure and the support structure, where M is an integer greater than zero.

[0011] In one or more embodiments of the present utility model, the ground structure includes a plurality of ground units, and the plurality of ground units enclose to form a cavity structure, and both the transmission structure and the support structure are located in the cavity structure.

[0012] In one or more embodiments of the present utility model, the ground structure includes a plurality of ground units, and a part of the ground units enclose to form a cavity structure, and a part of the transmission structure is located in the cavity structure.

[0013] In one or more embodiments of the present utility model, the ground structure includes a plurality of ground units, and a part of the ground units enclose to form a groove structure with an opening, and a part of the transmission structure is located in the groove structure.

[0014] In one or more embodiments of the present utility model, it further includes

[0015] a phase shift structure, where the phase shift structure is located between the ground structure and the transmission structure, or the transmission structure is between the phase shift structure and the ground structure.

[0016] An embodiment of the present utility model further provides an antenna, including the above-mentioned feed network.

[0017] Compared with the prior art, the present utility model constructs a reduced configuration part in the support structure between the transmission structure and the ground structure to reduce the space occupied by the support structure, thereby reducing the dielectric loss, ultimately reducing the loss of the feed network, and improving the performance of the feed network. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of a feed network structure according to an embodiment of the present utility model;

[0019] Figure 2 is a schematic diagram of a feed network structure according to an embodiment of the present utility model;

[0020] Figure 3 is a schematic diagram of a feed network structure according to an embodiment of the present utility model;

[0021] Figure 4 is a schematic diagram of a feed network structure according to an embodiment of the present utility model;

[0022] Figure 5 is a schematic diagram of a feed network structure according to an embodiment of the present utility model.

[0023] Description of Main Reference Numerals:

[0024] 10 - Transmission structure, 10a - First transmission unit, 10b - Second transmission unit, 10c - Third transmission unit, 20 - Support structure, 30 - Ground structure, 30a - First ground unit, 30b - Second ground unit, 30c - Third ground unit, 30d - Fourth ground unit, 30e - Fifth ground unit, 40 - Phase - shifting structure, M - Reduced - allocation part. Detailed Embodiment

[0025] The following combines with the drawings to describe in detail the specific embodiments of the present utility model. However, it should be understood that the protection scope of the present utility model is not limited by the specific embodiments.

[0026] Unless otherwise clearly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "having" etc. will be understood to include the stated elements or components, without excluding other elements or other components.

[0027] As shown in the figure, a feed network of a preferred embodiment of the present utility model improves the support structure 20 to reduce or lower the loss of the feed network and improve the performance of the feed network.

[0028] Specifically, the feed network includes a transmission structure 10, a support structure 20, and a ground structure 30. Among them, the transmission structure 10 is installed and fixed through the support structure 20, and the transmission structure 10 and the support structure 20, the ground structure 30 can form at least one or a combination of a microstrip - line structure and a stripline structure. Through the microstrip - line structure, or the stripline structure, or the combination of the microstrip - line structure and the stripline structure, signal transmission can be carried out. Here, the combination includes but is not limited to the combination between the microstrip - line structure and the stripline structure, the combination between the microstrip - line structure and the microstrip - line structure, and the combination between the stripline structure and the stripline structure, which can be set according to actual needs.

[0029] As shown in the figure, among them, as Figure 1 shown, between the transmission structure 10 and the ground structure 30 is the support structure 20, and the transmission structure 10 and the ground structure 30 finally form a microstrip - line structure. As Figure 3 shown, between the upper part (such as 30a shown in the figure) and the lower part (such as 30b shown in the figure) of the ground structure 30 is the transmission structure 10, between the transmission structure 10 and the lower part of the ground structure 30 is the support structure 20, and the transmission structure 10 and the ground structure 30 finally form a stripline structure. As Figure 4As shown, the left part of the transmission structure 10 (10a as shown in the figure) is located between the upper part (30a as shown in the figure) and the lower part (30b as shown in the figure) of the ground structure 30, forming a stripline structure, while the right part of the transmission structure 10 (10c as shown in the figure) and the ground structure 30 (30e as shown in the figure) form a microstrip line structure. Finally, the transmission structure 10 and the ground structure 30 form a combination of a microstrip line structure and a stripline structure.

[0030] Combined with Figures 1 to 5 As shown, in order to reduce or lower the loss of the feeding network and improve the performance of the feeding network, a reduced configuration part capable of reducing its space occupation is constructed on the support structure 20. By reducing the space occupation of the support structure 20, the dielectric loss between the transmission structure 10 and the ground structure 30 can be reduced, thus the loss can be lowered.

[0031] In this embodiment, combined with Figures 1 to 2 As shown, the reduced configuration part is formed by reducing the thickness of at least a part of the support structure 20. That is to say, by reducing the thickness of at least a part of the support structure 20, its space occupation can be reduced, thereby reducing the dielectric loss between the support structure 20 and the ground structure 30, and further reducing the transmission loss and improving the performance of the feeding network. Specifically, when implementing, as Figure 2 As shown, it is optimal to reduce the overall thickness of the support structure 20, thereby reducing the space occupation and the loss to a certain extent.

[0032] Of course, in other embodiments, the reduced configuration part can also be a hollowed-out part constructed on the support structure 20, such as through holes of various shapes, which can be specifically set according to actual needs.

[0033] The following will detail the feeding network described in the present utility model with four embodiments.

[0034] Embodiment 1

[0035] Combined with Figure 1 and Figure 2 As shown, the feeding network includes a transmission structure 10, a support structure 20, and a ground structure 30. The support structure 20 is located between the transmission structure 10 and the ground structure 30, and the transmission structure 10 and the ground structure 30 form a microstrip line structure. Therefore, signals can be transmitted through this microstrip line structure.

[0036] Among them, the transmission structure 10 includes N transmission units, and the N transmission units are electrically connected in sequence, where N is an integer greater than zero. As Figure 1As shown, the transmission structure 10 includes three sequentially electrically connected transmission units, denoted as the first transmission unit 10a, the second transmission unit 10b, and the third transmission unit 10c. Among them, the first transmission unit 10a and the third transmission unit 10c extend along the first direction (the horizontal direction shown in the figure), and the second transmission unit 10b extends along the second direction perpendicular to the first direction (the vertical direction shown in the figure). One end of the second transmission unit 10b is electrically connected to the first transmission unit 10a, and the opposite end is electrically connected to the third transmission unit 10c. In specific implementation, it is best to select a metal strip line for the transmission structure 10, and the specific extension directions of each transmission unit can be set according to actual needs.

[0037] Combined with Figure 1 and Figure 2 As shown, the support structure 20 is located between the transmission structure 10 and the ground structure 30, and it can support and fix the transmission structure 10. Here, the support structure 20 reduces at least a part of its thickness ( Figure 1 The case of reducing part of the thickness is shown, Figure 2 The case of reducing the overall thickness is shown), to reduce or lower its space occupation, and thus reduce or lower the loss.

[0038] The support structure 20 is constructed with a bearing surface that can carry the transmission structure 10. In specific implementation, the transmission structure 10 can be fixed on the bearing surface through structures such as buckles. Of course, in other embodiments, the support structure 20 can also use support members such as support rods to support and fix the transmission structure 10, which can be selected according to actual needs.

[0039] Combined with Figure 1 and Figure 2 As shown, the ground structure 30 is overall planar, and it can provide the ground required for the microstrip line structure. Therefore, it can finally form a microstrip line structure with the transmission structure 10 and the support structure 20. As Figure 1 shown, the first transmission unit 10a, the support structure 20, and the ground structure 30 form a microstrip line structure, and the third transmission unit 10c, the support structure 20, and the ground structure 30 form a microstrip line structure. In specific implementation, the ground structure 30 can also be divided into M ground units, and each transmission unit can correspond to a ground unit to form a microstrip line structure, where M is an integer greater than zero.

[0040] As Figure 2 shown, the feeding network can also include a phase-shifting structure 40, and this phase-shifting structure 40 can cooperate with the transmission structure 10 to achieve signal phase change. The phase-shifting structure 40 can be arranged on one side of the transmission structure 10, or can be arranged on both sides of the transmission structure 10, which can be selected according to actual needs. Here, the phase-shifting structure 40 includes but is not limited to phase-shifting media.

[0041] Embodiment Two

[0042] As Figure 3 shown, the feeding network includes a transmission structure 10, a support structure 20, and a ground structure 30. The support structure 20 is located between the transmission structure 10 and the ground structure 30. The transmission structure 10 and the ground structure 30 form a stripline structure. Therefore, signals can be transmitted through the stripline structure.

[0043] Different from the first embodiment, by changing the ground structure 30, the transmission structure 10, the support structure 20, and the ground structure 30 finally form a stripline structure. Here, the ground structure 30 includes a first ground unit 30a, a second ground unit 30b, a third ground unit 30c, and a fourth ground unit 30d. The first ground unit 30a, the second ground unit 30b, the third ground unit 30c, and the fourth ground unit 30d enclose a cavity structure. Both the transmission structure 10 and the support structure 20 are located in the cavity structure. Among them, the first transmission unit 10a and the first ground unit 30a, the second ground unit 30b form a stripline structure, the second transmission unit 10b and the third ground unit, the fourth ground unit form a stripline structure, and the third transmission unit and the first ground unit 30a, the second ground unit 30b form a stripline structure.

[0044] As Figure 3 shown, in this embodiment, two phase-shifting structures 40 are provided in the cavity enclosed by the ground structure 30, respectively located on both sides of the transmission structure 10. Of course, in other embodiments, only one phase-shifting structure 40 may be provided to reduce the proportion of non-air medium in the cavity and reduce losses.

[0045] In this embodiment, as Figure 3 shown, the thickness of the support structure 20 is less than the thickness of the phase-shifting structure 40. By reducing the thickness of the support structure 20, the space occupied by the support structure 20 is reduced, and thus losses can be reduced.

[0046] Embodiment Three

[0047] As Figure 4 shown, the feeding network includes a transmission structure 10, a support structure 20, and a ground structure 30. The support structure 20 is located between the transmission structure 10 and the ground structure 30. The transmission structure 10 and the ground structure 30 form a combination of a stripline structure and a microstrip line structure. Therefore, signals can be transmitted through the stripline structure and the microstrip line structure.

[0048] Different from Embodiment 1, by changing the ground structure 30, the transmission structure 10, the support structure 20, and the ground structure 30 form a combination of a stripline structure and a microstrip line structure. Here, the ground structure 30 includes a first ground unit 30a, a second ground unit 30b, a third ground unit 30c, a fourth ground unit 30d, and a fifth unit 30e. Among them, the first ground unit 30a, the second ground unit 30b, the third ground unit 30c, and the fourth ground unit 30 enclose a cavity structure, and the fifth ground unit 30e is connected to the cavity structure. The first transmission unit 10a extends into the cavity structure and forms a stripline structure with the first ground unit 30a and the second ground unit 30b, while the second transmission unit 10b and the third transmission unit 10c are located outside the cavity structure. The support structure 20 is located between the third transmission unit 10c and the fifth ground unit 30e. The third transmission unit 10c, the support structure 20, and the fifth ground unit 30e form a microstrip line structure. Finally, the transmission structure 10, the support structure 20, and the ground structure 30 form a combination of a stripline structure and a microstrip line structure.

[0049] As Figure 4 shown, in this embodiment, two phase-shifting structures 40 are provided in the cavity enclosed by the ground structure 30, respectively located on both sides of the first transmission unit 10a. Of course, in other embodiments, only one phase-shifting structure 40 may be provided to reduce the proportion of non-air media in the cavity and reduce losses.

[0050] In this embodiment, as Figure 4 shown, the thickness of the support structure 20 is less than the thickness of the phase-shifting structure 40. By reducing the thickness of the support structure 20, the space occupied by the support structure 20 can be reduced, and thus losses can be reduced.

[0051] Embodiment 4

[0052] As Figure 5 shown, the feeding network includes a transmission structure 10, a support structure 20, and a ground structure 30. The support structure 20 is located between the transmission structure 10 and the ground structure 30. The transmission structure 10 and the ground structure 30 form a combination of a microstrip line structure and a microstrip line structure. Therefore, signals can be transmitted through the microstrip line structure.

[0053] Different from the first embodiment, by changing the ground structure 30, the transmission structure 10, the support structure 20, and the ground structure 30 form a combination of a microstrip line structure and a microstrip line structure. Here, the ground structure 30 includes a first ground unit 30a, a second ground unit 30b, a third ground unit 30c, and a fourth ground unit 30d. Among them, the second ground unit 30b, the third ground unit 30c, and the fourth ground unit 30d enclose a groove structure with an opening, and the first ground unit 30a is connected to the groove structure. The first transmission unit 10a extends into the groove structure, the second transmission unit 10b and the third transmission unit 10c are located outside the groove structure, and the support structure 20 is located between the third transmission unit 10c and the first ground structure 30. The first transmission unit 10a and the fourth ground unit 30d form a microstrip line structure, while the third transmission unit, the support structure 20, and the first ground unit 30a form another microstrip line structure. Finally, the transmission structure 10, the support structure 20, and the ground structure 30 form a combination of a microstrip line structure and a microstrip line structure.

[0054] As Figure 5 shown, in this embodiment, a phase shift structure 40 is provided in the groove structure surrounded by the ground structure 30. And, as Figure 3 shown, the thickness of the support structure 20 is less than the thickness of the phase shift structure 40. By reducing the thickness of the support structure 20, the space occupied by the support structure 20 is reduced, and thus the loss can be reduced.

[0055] The present utility model also discloses an antenna, including the above-mentioned feeding network.

[0056] The present utility model constructs a reduced configuration part in the support structure 20 between the transmission structure 10 and the ground structure 30 to reduce the space occupied by the support structure 20, thereby reducing the dielectric loss, finally reducing the loss of the feeding network, and improving the performance of the feeding network.

[0057] The foregoing description of the specific exemplary embodiments of the present utility model is for the purposes of illustration and exemplification. These descriptions are not intended to limit the present utility model to the precise forms disclosed, and obviously, many changes and variations are possible in light of the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present utility model and its practical applications, so that those skilled in the art can implement and utilize various different exemplary embodiments of the present utility model as well as various different selections and changes. The scope of the present utility model is intended to be defined by the claims and their equivalents.

Claims

1. A feeding network, characterized in that, It includes a transmission structure, a support structure, and a ground structure. The transmission structure is fixed by the support structure, and the transmission structure can form at least one or a combination of a microstrip line structure and a stripline structure with the support structure and the ground structure. The support structure is configured with a reduced-configuration part for reducing its space occupation.

2. The feed network according to claim 1, characterized in that, The support structure forms the reduced-configuration part by reducing the thickness of at least a part of the area.

3. The feed network according to claim 1, characterized in that, The support structure includes a bearing surface, and the transmission structure is arranged on the bearing surface.

4. The feed network according to claim 1, wherein The transmission structure includes N transmission units, and at least a part of the N transmission units forms at least one or a combination of a microstrip line structure and a stripline structure with the support structure and the ground structure. N is an integer greater than zero.

5. The feeding network according to claim 1 or 4, characterized in that The ground structure includes M ground units, and at least a part of the M ground units forms at least one or a combination of a microstrip line structure and a stripline structure with the transmission structure and the support structure. M is an integer greater than zero.

6. The feed network according to claim 1, wherein The ground structure includes a plurality of ground units, and the plurality of ground units enclose to form a cavity structure, and both the transmission structure and the support structure are located in the cavity structure.

7. The feeding network according to claim 1, characterized in that The ground structure includes a plurality of ground units, and a part of the ground units enclose to form a cavity structure, and a part of the transmission structure is located in the cavity structure.

8. The feeding network according to claim 1, characterized in that, The ground structure includes a plurality of ground units, and a part of the ground units enclose to form a groove structure with an opening, and a part of the transmission structure is located in the groove structure.

9. The feed network according to claim 1, characterized in that, It further includes a phase-shifting structure, and the phase-shifting structure is located between the ground structure and the transmission structure, or the transmission structure is between the phase-shifting structure and the ground structure.

10. An antenna, characterized in that, It includes the feeding network according to any one of claims 1 to 9.

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