Ceramic antenna

Abstract

The utility model provides a ceramic antenna. The ceramic antenna comprises a PCB substrate assembly; the antenna convergence reference structure is arranged on the PCB substrate assembly; a ceramic body; and at least one part of the antenna radiator is wound on the circumferential side wall of the ceramic body, one end of the antenna radiator is connected with the PCB substrate assembly, and the other end of the antenna radiator is connected with the antenna convergence reference structure. According to the utility model, the problem of poor use performance of the antenna in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the field of antenna equipment, in particular to a ceramic antenna. Background Art

[0002] With the development of wireless technology and the demand for miniaturization of equipment, the size of equipment is getting smaller and smaller, and the size of components is getting smaller and smaller. Some large and bulky antennas are facing elimination. It is well known that the wireless information age is inseparable from antennas. Antennas play an important role in wireless information transmission, and wireless smart devices are frequently updated and iterated. For example, bells, cat eyes, doorbells, door locks, etc., their main working frequency bands are in WiFi2.4G or Bluetooth bands, and the adapted antennas need to be miniaturized. Therefore, the trend of antenna miniaturization is becoming more and more obvious, and the production and design of miniaturized antennas is imminent. Ceramic antennas are a good choice. They are light in weight, low in profile, low in cost, flexible in design, and strong in stability. They are easy to combine with circuits and other advantages, and have received widespread attention.

[0003] A multilayer ceramic PIFA antenna is disclosed in the prior art. The key point of its design is a multilayer ceramic PIFA that uses a multi-stage coupling method to widen the communication bandwidth of the antenna. However, the multilayer ceramic increases the cost of the antenna. In addition, the processing design of the multilayer ceramic antenna is complicated, making the processing and production inconvenient. The reliability of the multilayer ceramic is poor.

[0004] The prior art also discloses a high-gain omnidirectional WiFi antenna, the key point of its design is a PCB antenna technology field, antenna units of different sizes form 2.4G and 5.8G working frequency bands, and a number of radiation units are printed on the PCB substrate to form a high-gain effect of the antenna. In addition, the antenna adopts a flat PCB printing method, which reduces the assembly process and saves materials, thereby achieving the advantages of simple assembly, good structural consistency, and better price. However, the overall size is large and suitable for external use.

[0005] Therefore, the prior art has the problem of poor antenna performance. Utility Model Content

[0006] The main purpose of the utility model is to provide a ceramic antenna to solve the problem of poor performance of the antenna in the prior art.

[0007] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a ceramic antenna is provided, including: a PCB substrate assembly; an antenna bus reference structure, the antenna bus reference structure is arranged on the PCB substrate assembly; a ceramic body; an antenna radiator, at least a portion of the antenna radiator is wound around the circumferential side wall of the ceramic body, and one end of the antenna radiator is connected to the PCB substrate assembly, and the other end of the antenna radiator is connected to the antenna bus reference structure.

[0008] Further, the antenna radiator includes a first connection segment, a winding segment, and a second connection segment that are sequentially connected. The first connection segment and the second connection segment are respectively sleeved on both ends of the ceramic body. The winding segment is wound along the circumferential side wall of the ceramic body, and the first connection segment is connected to the antenna current collection reference structure, and the second connection segment is connected to the PCB substrate assembly.

[0009] Further, both the antenna current collection reference structure and the ceramic body are located on the same side in the thickness direction of the PCB substrate assembly.

[0010] Further, the antenna current collection reference structure has an installation notch, and the ceramic body is disposed on a portion of the PCB substrate assembly exposed in the installation notch.

[0011] Further, the installation notch of the antenna current collection reference structure is provided corresponding to one of the corners of the PCB substrate assembly, and the sum of the area of the antenna current collection reference structure and the area of the installation notch is equal to the area of the PCB substrate assembly.

[0012] Further, there is a clearance gap between the ceramic body and the edge of the installation notch.

[0013] Further, the area of the installation notch is less than or equal to 1 / 4 of the area of the PCB substrate assembly.

[0014] Further, the ceramic antenna further includes a radio frequency line, and the antenna radiator is connected to the antenna current collection reference structure through the radio frequency line.

[0015] Further, the antenna current collection reference structure is plate-shaped, and the thickness direction of the antenna current collection reference structure is the same as the thickness direction of the PCB substrate assembly.

[0016] Further, the thickness of the antenna current collection reference structure is less than the thickness of the PCB substrate assembly.

[0017] Applying the technical solution of the present utility model, the ceramic antenna in the present application includes a PCB substrate assembly, an antenna current collection reference structure, a ceramic body, and an antenna radiator. The antenna current collection reference structure is disposed on the PCB substrate assembly; at least a part of the antenna radiator is wound around the circumferential side wall of the ceramic body, and one end of the antenna radiator is connected to the PCB substrate assembly, and the other end of the antenna radiator is connected to the antenna current collection reference structure.

[0018] When using the ceramic antenna in this application, since the antenna radiator is bent and wound around the ceramic body, the overall layout of the ceramic antenna can be ensured to be more compact. At the same time, by setting it in this way, the structure composed of the antenna radiator and the ceramic body can be approximately regarded as a resistor with a larger size. Therefore, the antenna radiator can be directly welded to the PCB substrate assembly and connected to the RF module through the RF trace of the single board. On the other hand, in this application, by using the setting method of winding the antenna radiator around the ceramic body, not only can the size of the ceramic antenna be ensured to be small, but also the ceramic antenna can be ensured to have stronger hardness, so that it has the advantages of not being easily deformed, having a stable structure, being convenient for storage, and being convenient for assembly and transportation in the profile, and thus the cost of the ceramic antenna can be reduced. Therefore, the ceramic antenna in this application effectively solves the problem of poor performance of antennas in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The schematic diagrams in the specification forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0020] Figure 1 shows a schematic structural diagram of a ceramic antenna according to a specific embodiment of the present utility model;

[0021] Figure 2 shows Figure 1 a schematic diagram of the positional relationship between the ceramic body and the antenna radiator of the ceramic antenna in

[0022] Among them, the above-mentioned drawings include the following reference numerals:

[0023] 10. PCB substrate assembly; 20. Antenna bus reference structure; 21. Installation notch; 30. Ceramic body; 40. Antenna radiator; 41. First connection section; 42. Winding section; 43. Second connection section; 50. RF line. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] It should be pointed out that unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0026] In the present utility model, unless otherwise stated, the orientation terms such as "upper, lower, top, bottom" are generally in reference to the direction shown in the drawings or in the vertical, perpendicular or gravitational direction of the component itself; similarly, for the convenience of understanding and description, "inner, outer" refer to the inner and outer of the contour of each component itself, but the above orientation terms do not limit the present utility model.

[0027] In order to solve the problem of poor performance of antennas in the prior art, the present application provides a ceramic antenna.

[0028] As Figure 1 and Figure 2 shown, the ceramic antenna in the present application includes a PCB substrate assembly 10, an antenna bus reference structure 20, a ceramic body 30, and an antenna radiator 40. The antenna bus reference structure 20 is disposed on the PCB substrate assembly 10; at least a part of the antenna radiator 40 is wound around the circumferential side wall of the ceramic body 30, and one end of the antenna radiator 40 is connected to the PCB substrate assembly 10, and the other end of the antenna radiator 40 is connected to the antenna bus reference structure 20.

[0029] When using the ceramic antenna in the present application, since the antenna radiator 40 is bent and wound around the ceramic body 30, it can ensure that the overall layout of the ceramic antenna is more compact. At the same time, by such a setting, the structure composed of the antenna radiator 40 and the ceramic body 30 can be approximately regarded as a resistor with a larger size. Therefore, the antenna radiator 40 can be directly welded to the PCB substrate assembly 10 and connected to the RF module through the RF trace of the single board. On the other hand, in the present application, by using the setting method of winding the antenna radiator 40 around the ceramic body 30, it can not only ensure that the size of the ceramic antenna is small, but also ensure that the ceramic antenna has stronger hardness, thus having the advantages of not being easily deformed, stable structure, convenient storage, easy assembly and transportation of the profile, and further can reduce the cost of the ceramic antenna. Therefore, the ceramic antenna in the present application effectively solves the problem of poor performance of antennas in the prior art.

[0030] Specifically, the ceramic antenna further includes an RF line 50, and the antenna radiator 40 is connected to the antenna bus reference structure 20 through the RF line 50. And, in the present application, the lumped port feeding method is adopted.

[0031] Optionally, as Figure 1 and Figure 2As shown, the antenna radiator 40 includes a first connection segment 41, a winding segment 42, and a second connection segment 43 that are sequentially connected. The first connection segment 41 and the second connection segment 43 are respectively sleeved on both ends of the ceramic body 30. The winding segment 42 is wound along the circumferential side wall of the ceramic body 30. The first connection segment 41 is connected to the antenna bus reference structure 20, and the second connection segment 43 is connected to the PCB substrate assembly 10. Preferably, in a specific embodiment of the present application, the first connection segment 41 and the second connection segment 43 are respectively sleeved on both ends of the ceramic body 30 and wrap both ends of the ceramic body 30. At the same time, the winding segment 42 is wound around the ceramic body 30 in a circumferential spiral winding manner, and both ends of the winding segment 42 are respectively connected to the first connection segment 41 and the second connection segment 43.

[0032] Specifically, both the antenna bus reference structure 20 and the ceramic body 30 are located on the same side in the thickness direction of the PCB substrate assembly 10. Moreover, the antenna bus reference structure 20 has an installation notch 21, and the ceramic body 30 is disposed on the part of the PCB substrate assembly 10 exposed in the installation notch 21. Preferably, the installation notch 21 of the antenna bus reference structure 20 is provided corresponding to one of the corner portions of the PCB substrate assembly 10, and the sum of the area of the antenna bus reference structure 20 and the area of the installation notch 21 is equal to the area of the PCB substrate assembly 10. In a specific embodiment of the present application, except for the installation notch 21 and the part of the PCB substrate assembly 10 corresponding to the installation notch 21, the antenna bus reference structure 20 and the PCB substrate assembly 10 are completely coincident. Or rather, when setting the antenna bus reference structure 20 and the PCB substrate assembly 10, the combination of the antenna bus reference structure 20 and the PCB substrate assembly 10 can be regarded as a multi-layer structure, and the length and width of the antenna bus reference structure 20 and the PCB substrate assembly 10 are the same, but a rectangular clearance area, that is, the installation notch 21, needs to be provided at the corner portion of the antenna bus reference structure 20.

[0033] Optionally, the area of the installation notch is less than or equal to 1 / 4 of the area of the PCB substrate assembly. Of course, in the present application, for the actual size of the installation notch, it can be adaptively adjusted according to the actual size of the ceramic body 30 and the actual use design requirements.

[0034] In a specific embodiment of the present application, the length and width of the PCB substrate assembly 10 are 40*35, unit mm, and the thickness is 1 mm. The size of the installation notch 21 is 19.5*16 mm. The RF line 50 serves as the lumped port feed port of the antenna, with a length and width of 1.5*2 mm. The length and width of the ceramic body 30 are 6.9*2 mm, and the thickness is 1 mm.

[0035] Optionally, the antenna bus reference structure 20 is plate-shaped, and the thickness direction of the antenna bus reference structure 20 is the same as that of the PCB substrate assembly 10. Preferably, the thickness of the antenna bus reference structure 20 is less than that of the PCB substrate assembly 10. By setting it in this way, the space occupied by the ceramic antenna can be effectively reduced, which is beneficial to the miniaturization design of the ceramic antenna.

[0036] Optionally, there is a clearance between the ceramic body 30 and the edge of the mounting notch 21. By setting it in this way, it can be ensured that when the antenna radiator 40 is wound around the ceramic body 30, the antenna radiator 40 can only be connected to the antenna bus reference structure 20 through the RF line 50, and other parts of the antenna radiator 40 will not be connected to or in contact with the antenna bus reference structure 20.

[0037] In a specific embodiment of the present application, the operating frequency of the antenna radiator 40 is greater than or equal to 2.4 GHz and less than or equal to 2.5 GHz. By setting it in this way, it can be ensured that the ceramic antenna in the present application can cover the operating frequency bands of WiFi 2.4G and Bluetooth, so as to ensure that the ceramic antenna in the present application has a wide range of applications.

[0038] Optionally, the antenna radiator 40 is made of copper.

[0039] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

[0040] 1. Effectively solve the problem of poor antenna performance in the prior art;

[0041] 2. There is no metal interference above and below the ceramic antenna, and the radiation of the antenna approaches omnidirectional radiation;

[0042] 3. The structure is simple and the performance is stable.

[0043] Obviously, the above-described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0044] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0045] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of this application described here can be implemented in an order other than those illustrated or described here.

[0046] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A ceramic antenna, characterized in that: include: PCB substrate assembly (10); An antenna bus reference structure (20), wherein the antenna bus reference structure (20) is arranged on the PCB substrate assembly (10); Ceramic body (30); An antenna radiator (40), at least a portion of which is wound around the circumferential side wall of the ceramic body (30), one end of the antenna radiator (40) is connected to the PCB substrate assembly (10), and the other end of the antenna radiator (40) is connected to the antenna bus reference structure (20).

2. The ceramic antenna according to claim 1, characterized in that: The antenna radiator (40) comprises a first connecting section (41), a winding section (42) and a second connecting section (43) which are connected in sequence, the first connecting section (41) and the second connecting section (43) are respectively sleeved on two ends of the ceramic body (30), the winding section (42) is wound along the circumferential side wall of the ceramic body (30), and the first connecting section (41) is connected to the antenna bus reference structure (20), and the second connecting section (43) is connected to the PCB substrate assembly (10).

3. The ceramic antenna according to claim 1, characterized in that: The antenna bus reference structure (20) and the ceramic body (30) are both located on the same side in the thickness direction of the PCB substrate assembly (10).

4. The ceramic antenna according to claim 3, characterized in that: The antenna bus reference structure (20) has a mounting notch (21), and the ceramic body (30) is arranged on a portion of the PCB substrate assembly (10) exposed in the mounting notch (21).

5. The ceramic antenna according to claim 4, characterized in that: The mounting notch (21) of the antenna bus reference structure (20) is arranged corresponding to one of the corners of the PCB substrate assembly (10), and the sum of the area of ​​the antenna bus reference structure (20) and the area of ​​the mounting notch (21) is equal to the area of ​​the PCB substrate assembly (10).

6. The ceramic antenna according to claim 4, characterized in that: There is an escape gap between the ceramic body (30) and the edge of the installation notch (21).

7. The ceramic antenna according to claim 4, characterized in that: The area of ​​the installation notch (21) is less than or equal to 1 / 4 of the area of ​​the PCB substrate assembly (10).

8. The ceramic antenna according to any one of claims 1 to 7, characterized in that: The ceramic antenna also includes a radio frequency line (50), and the antenna radiator (40) is connected to the antenna bus reference structure (20) via the radio frequency line (50).

9. The ceramic antenna according to any one of claims 1 to 7, characterized in that: The antenna bus reference structure (20) is in a plate shape, and the thickness direction of the antenna bus reference structure (20) is the same as the thickness direction of the PCB substrate assembly (10).

10. The ceramic antenna according to claim 9, characterized in that: The thickness of the antenna bus reference structure (20) is smaller than the thickness of the PCB substrate assembly (10).

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