Antenna adjusting structure and wireless product
By setting up an adjustable matching network between the feed point and the feeding location and the standard component antenna, the problem of signal loss in different environments is solved, and the multi-band adaptability and communication quality of the antenna are improved.
Patent Information
- Application Number
- CN202422241604.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-12
AI Technical Summary
In existing wireless products, the performance of standard antennas is affected in different environments, and the signal loss is severe, making it difficult to adapt to a variety of communication systems and frequencies.
An adjustable matching network is set up between the feed point and the feeding location and the standard piece antenna, and the impedance characteristics of the antenna are changed by adjusting the matching network to adapt to different frequencies and communication environments.
Improves the versatility and adaptability of the antenna, reduces signal loss, improves communication quality, and simplifies debugging and maintenance processes.
Smart Images
Figure CN223124212U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of antennas, and particularly relates to an antenna adjusting structure and a wireless product. Background Art
[0002] In current communication technologies, for some wireless products, antennas are often made into standard parts rather than customized parts. For example, TV antennas, router antennas, set-top box antennas, etc. The advantage of making antennas into standard parts is that it can simplify material coding, so that one type of antenna can be used in different projects. However, antennas have relatively strict environmental requirements. Different environments where the antennas are located, such as the clearance height of the antenna and the distance between the components around the antenna and the antenna being relatively close, have a great impact on the antenna standing wave ratio. Part of the antenna signal will be lost, affecting the performance of the standard part antenna. Content of the Utility Model
[0003] The main purpose of the utility model is to propose an antenna adjusting structure and a wireless product, aiming to facilitate the realization of antenna matching impedance transformation, reduce antenna signal loss, and improve antenna efficiency.
[0004] To achieve the above object, the antenna adjusting structure proposed by the utility model includes:
[0005] Standard part antenna;
[0006] Feeding point;
[0007] Feeding ground point, the feeding point and the feeding ground point are connected to both ends of the standard part antenna;
[0008] Adjustable matching network, the adjustable matching network is arranged between the feeding point / feeding ground point and the standard part antenna. The adjustable matching network includes reserved adjusting points and at least two matching networks. One end of each matching network is connected to the standard part antenna and is arranged at intervals along the length direction of the standard part antenna, and the other end is connected to a control switch and converges to connect to the reserved adjusting point. Each matching network includes a matching bit and a control switch, and the control switch is used to control the on / off of each matching network.
[0009] In one embodiment, the adjustable matching network is arranged between the feeding point and the standard part antenna.
[0010] In one embodiment, the adjustable matching network is arranged between the feeding ground point and the standard part antenna.
[0011] In one embodiment, the adjustable matching network includes two groups. One adjustable matching network is arranged between the feeding point and the standard part antenna, and the other adjustable matching network is arranged between the feeding ground point and the standard part antenna.
[0012] In one embodiment, there are two feeding points, which are respectively arranged on both sides of the feeding point along the length direction of the standard antenna. The adjustable matching network includes two groups, and one matching network is arranged between one feeding point and the standard antenna.
[0013] In one embodiment, the number of the matching networks is four.
[0014] In one embodiment, the distance between each of the matching networks is d, and 1mm ≤ d ≤ 3mm.
[0015] In one embodiment, the control switch is a single-pole multi-throw switch.
[0016] The present utility model further provides a wireless product, which includes an antenna adjustment structure, and the antenna adjustment structure includes:
[0017] A standard antenna;
[0018] A feeding point;
[0019] Feeding points, the feeding point and the feeding points are connected to both ends of the standard antenna;
[0020] An adjustable matching network, which is arranged between the feeding point / feeding points and the standard antenna. The adjustable matching network includes a reserved adjustment point and at least two matching networks. One end of each matching network is connected to the standard antenna and is arranged at intervals along the length direction of the standard antenna, and the other end is connected to a control switch and converges to connect to the reserved adjustment point. Each matching network includes a matching bit and a control switch, and the control switch is used to control the on / off of each matching network.
[0021] The technical solution of the present utility model provides an antenna adjustment structure, enabling the antenna to be optimized according to different communication requirements. By arranging an adjustable matching network between the feeding point / feeding points and the standard antenna, the impedance characteristics of the antenna are changed by adjusting the matching network, so as to achieve matching with different frequencies and communication environments. This design significantly improves the versatility and adaptability of the antenna, enabling the same antenna to be adapted to a variety of different communication systems and frequencies. The beneficial effects include improving the performance of the antenna, reducing signal loss, enhancing communication quality, and simplifying the debugging and maintenance process of the antenna. Description of the Drawings
[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.
[0023] Figure 1 Schematic diagram of a structure of an antenna adjustment structure provided by the present invention;
[0024] Figure 2 Schematic diagram of another structure of an antenna adjustment structure provided by the present invention;
[0025] Figure 3 Schematic diagram of still another structure of an antenna adjustment structure provided by the present invention;
[0026] Figure 4 Schematic diagram of yet another structure of an antenna adjustment structure provided by the present invention;
[0027] Figure 5 For Figure 1 SWR diagrams of the standard antenna before and after correction in
[0028] Explanation of the reference numerals in the drawings:
[0029] 1000. Antenna adjustment structure; 1. Standard antenna; 2. Feeding point; 3. Grounding point; 4. Reserved adjustment point; 5. Matching network.
[0030] The realization of the object, functional features and advantages of the present invention will be further described with reference to the embodiments and the drawings. Specific embodiments
[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the scope of protection of the present invention.
[0032] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0033] In addition, if the descriptions such as "first", "second", etc. are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.
[0034] In current communication technologies, for some wireless products, antennas are often made into standard components rather than customized ones. For example, TV antennas, router antennas, set-top box antennas, etc. The advantage of making antennas into standard components is that it can simplify the material coding, so that one type of antenna can be used commonly in different projects. However, antennas have relatively strict environmental requirements. The environment where the antenna is located is different. For example, the antenna clearance height, and the components around the antenna are relatively close to the antenna, which has a great impact on the antenna standing wave ratio. Part of the antenna signal will be lost, affecting the performance of the standard component antenna.
[0035] To solve the above problems, please refer to Figures 1 to 5 , the present utility model proposes an antenna adjustment structure 1000, which includes a standard component antenna 1, a feeding point 2, a grounding point 3, and an adjustable matching network. The feeding point 2 and the grounding point 3 are connected to both ends of the standard component antenna 1; the adjustable matching network is arranged between the feeding point 2 / grounding point 3 and the standard component antenna 1. The adjustable matching network includes a reserved adjustment point 4 and at least two matching networks 5. One end of each matching network 5 is connected to the standard component antenna 1 and is arranged at intervals along the length direction of the standard component antenna 1, and the other end is connected to a control switch and converges to connect to the reserved adjustment point 4. Each matching network 5 includes a matching bit and a control switch, and the control switch is used to control the on / off of each matching network 5.
[0036] The technical solution of the present utility model proposes an antenna adjustment structure 1000, enabling the antenna to be optimized according to different communication requirements. By arranging an adjustable matching network between the feeding point 2 / grounding point 3 and the standard component antenna 1, the impedance characteristics of the antenna are changed by adjusting the matching network 5, so as to achieve matching with different frequencies and communication environments. This design significantly improves the versatility and adaptability of the antenna, enabling the same type of antenna to adapt to a variety of different communication systems and frequencies. The beneficial effects include improving the performance of the antenna, reducing signal loss, enhancing communication quality, and simplifying the antenna debugging and maintenance process.
[0037] In an alternative embodiment, refer to Figure 1 , an adjustable matching network is provided between the feeding point 2 and the standard antenna 1. So as to perform precise impedance matching before the electromagnetic wave signal enters the standard antenna 1, thereby optimizing the transmission efficiency of the electromagnetic wave signal. This design structure is applicable to scenarios that require efficient communication within a specific frequency band, such as specific wireless communication bands, which is beneficial to increasing the transmission distance and communication quality of electromagnetic signals, while reducing the attenuation and reflection of electromagnetic wave signals during transmission.
[0038] In another alternative embodiment, refer to Figure 2 , an adjustable matching network is provided between the feeding point 3 and the standard antenna 1. In this way, final impedance matching is performed before the electromagnetic wave signal radiates from the standard antenna 1, which is suitable for applications that require precise control of the signal coverage range and direction, can improve the directivity and coverage accuracy of the electromagnetic wave signal, and reduce unnecessary signal interference.
[0039] In yet another alternative embodiment, refer to Figure 3 , the adjustable matching network includes two groups. One adjustable matching network is provided between the feeding point 2 and the standard antenna 1, and the other adjustable matching network is provided between the feeding point 3 and the standard antenna 1. This design of the dual matching network 5 provides higher flexibility and adjustment ability, enabling the standard antenna 1 to be optimized within a wider frequency range. Improving the multi-band adaptability and communication efficiency of the standard antenna 1.
[0040] In an alternative embodiment, refer to Figure 4 , there are two feeding points 3, and the two feeding points 3 are respectively arranged on both sides of the feeding point 2 along the length direction of the standard antenna 1. The adjustable matching network includes two groups, and one matching network 5 is provided between one feeding point 3 and the standard antenna 1. This design of the dual feeding points 3 facilitates the input and output of electromagnetic wave signals at two different feeding points of the standard antenna 1, thereby enabling the standard antenna 1 to have higher flexibility. It is applicable to applications that require communication in multiple directions or complex signal processing. Improving the directional communication ability and signal processing flexibility of the standard antenna 1.
[0041] In this embodiment, the number of the matching networks 5 is 4. By precisely controlling each matching network 5, the user can make fine adjustments to the performance of the antenna to adapt to different communication requirements. This design is particularly suitable for high-frequency communication systems that require precise impedance matching. Improving the frequency adaptability and communication quality of the antenna, and reducing signal reflection and attenuation. In other embodiments, the number of the matching networks 5 can be two, three or more, and can be specifically selected according to the actual usage of the standard antenna 1, which is not specifically limited herein.
[0042] Optionally, the spacing between each matching network 5 is d, where 1 mm ≤ d ≤ 3 mm. This precise spacing control helps ensure minimal mutual interference between the matching networks 5 while maintaining sufficient flexibility to accommodate different adjustment requirements. Also, the spacing between each matching network 5 is minimized as much as possible, thereby reducing the layout space of the structure of the standard antenna 1 and improving the compactness and integration of the antenna while ensuring high performance. In this embodiment, the spacing between two adjacent matching networks 5 is 1 mm. In other embodiments, the spacing between the matching networks 5 can be selected according to actual circumstances.
[0043] Optionally, to facilitate the control of each matching network 5, a control switch can be provided for each matching network 5 to control the on / off of the matching network 5. In this embodiment, the control switch is a single-pole multi-throw switch. By using a single-pole multi-throw switch to connect each matching network 5, the multiple fixed terminals of the single-pole multi-throw switch are respectively connected to each matching network 5. By controlling the movable terminal of the single-pole multi-throw switch to be connected to a certain fixed terminal, a certain matching network 5 is turned on to form a path, and at this time, the other matching networks 5 are in the off state. This facilitates the adjustment and switching between the antenna adjustment structures 1000. Using a single-pole multi-throw switch is convenient for controlling multiple matching networks 5, simplifies the operation process of the user, and makes the adjustment of the standard antenna 1 more intuitive and convenient.
[0044] The following takes the scheme of a single-pole 4-throw antenna in one embodiment of the present invention as an example for detailed description. As Figure 1 shown, there are four paths of matching networks 5 in the single-pole 4-throw antenna, and each path has a matching position, namely R1, R2, R3, and R4. The four matching positions are converged into one path through a single-pole 4-throw switch and then connected to a reserved debugging position L1 and then connected to the feeding point 2 (radio frequency signal access point). Since the feeding point 2 is different from the grounding point 3, a path must be formed between the feeding point 2 and the antenna. Therefore, a matching (collectively referred to as inductance, capacitance, and resistance) must be added to the reserved debugging position L1, and a matching is added to one of R1, R2, R3, and R4, that is, it is in the connected state, while the other three paths are in the off state (NC state). Only the single-pole 4-throw switch is needed to control each matching network 5. The spacing between the connection points of the four paths of matching networks 5 and the standard antenna 1 body is 1 - 3 mm (in this embodiment, it is 1 mm, and the specific spacing can be selected according to actual needs). The standard antenna 1 body is connected to the grounding point 3 and the main board ground through a ground return branch.
[0045] When the standard antenna 1 and the wireless module are set on a wireless product, the environment of the product relative to the antenna is fixed. It only needs to debug and optimize the matching values of L1, R1, R2, R3, and R4 according to the antenna in this environment (note: one of R1, R2, R3, and R4 is selected, and the other three paths are in the off state; L1 can be 0 ohm, inductor, or capacitor, and the matching values of the R series can be 0 ohm, inductor, capacitor, or NC) to make the standing wave ratio of the standard antenna 1 in this product environment optimal on the network analyzer. As Figure 5 shown, in this embodiment, the standing wave ratio of the standard antenna 1 before correction at 2.4 GHz is 3.827 (poor performance). After being corrected by the new matching network 5 (L1 and R1 are 0 ohm, and R2, R3, and R4 are NC), the standing wave ratio at 2.4 GHz is 1.821 (good performance). That is, through the new matching network 5, it is possible to quickly pull the resonance waveform of the standard antenna 1 that has already undergone frequency shift to the required optimal position without changing the body of the standard antenna 1. The signal loss of the standard antenna 1 is reduced, and the working efficiency of the antenna is improved.
[0046] The present utility model also proposes a wireless product, which includes an antenna adjustment structure 1000. The specific structure of the antenna adjustment structure 1000 refers to the above embodiment. Since this wireless product adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.
[0047] The above description is only an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.
Claims
1. An antenna adjustment structure, characterized in that, Comprising: Standard antenna; Feeding point; Grounding point, the feeding point and the grounding point are connected to both ends of the standard antenna; Adjustable matching network, the adjustable matching network is arranged between the feeding point / grounding point and the standard antenna, the adjustable matching network includes a reserved adjustment point and at least two matching networks, one end of each matching network is connected to the standard antenna and is arranged at intervals along the length direction of the standard antenna, the other end is connected to a control switch and converges to connect to the reserved adjustment point, each matching network includes a matching bit and a control switch, and the control switch is used to control the on / off of each matching network.
2. The antenna adjustment structure according to claim 1, wherein, The adjustable matching network is arranged between the feeding point and the standard antenna.
3. The antenna adjustment structure according to claim 1, wherein The adjustable matching network is arranged between the grounding point and the standard antenna.
4. The antenna adjustment structure according to claim 1, wherein The adjustable matching network includes two groups, one adjustable matching network is arranged between the feeding point and the standard antenna, and the other adjustable matching network is arranged between the grounding point and the standard antenna.
5. The antenna adjustment structure according to claim 1, wherein There are two grounding points, and the two grounding points are respectively arranged on both sides of the feeding point along the length direction of the standard antenna, the adjustable matching network includes two groups, and one matching network is arranged between one grounding point and the standard antenna.
6. The antenna adjustment structure according to any one of claims 1 to 5, characterized in that, The number of the matching networks is 4.
7. The antenna adjusting structure according to claim 6, wherein, The distance between each matching network is d, 1mm ≤ d ≤ 3mm.
8. The antenna adjustment structure according to claim 7, characterized in that, The control switch is a single-pole multi-throw switch.
9. A wireless product, characterized in that, Comprising the antenna adjustment structure according to any one of claims 1 to 8.