Multi-band compact antenna structure

Abstract

The invention relates to a multi-band compact antenna structure, a first WIFI assembly comprises a first etching antenna and a first patch antenna, the first etching antenna and the first patch antenna are respectively arranged on a PCB, the first etching antenna is provided with a first contact position, and the first patch antenna is electrically connected with the first contact position; the second WIFI assembly comprises a second etching antenna and a second patch antenna, the second etching antenna and the second patch antenna are respectively arranged on the PCB, the second etching antenna is provided with a second contact position, and the second patch antenna is electrically connected with the second contact position; the Bluetooth assembly comprises a third etching antenna and a third patch antenna, the third etching antenna and the third patch antenna are respectively arranged on the PCB, the third etching antenna is provided with a third contact position, and the third patch antenna is electrically connected with the third contact position. According to the invention, the multi-band antenna can be integrated on one circuit board, so that the space occupied by the antenna is reduced.

Description

Technical Field

[0001] The present invention relates to the field of antenna technology, and in particular to a multi-band compact antenna structure. Background Art

[0002] Currently, smart homes are generally equipped with Wi-Fi to facilitate communication with mobile devices. In related technologies, multi-band antennas for smart homes are usually designed using independent modularization, which takes up a lot of space inside the smart home. Summary of the Invention

[0003] The object of the present invention is to overcome the deficiencies in the prior art and provide a multi-band compact antenna structure capable of integrating the multi-band antenna on a circuit board, thereby reducing the overall space occupied by the antenna.

[0004] The object of the present invention is achieved through the following technical solutions:

[0005] In a first aspect, the present application provides a multi-band compact antenna structure, comprising: a PCB board; a first Wi-Fi component, comprising a first etched antenna and a first patch antenna, the first etched antenna and the first patch antenna being respectively arranged on the PCB board, the first etched antenna being provided with a first contact position, and the first patch antenna being electrically connected to the first contact position; a second Wi-Fi component, comprising a second etched antenna and a second patch antenna, the second etched antenna and the second patch antenna being respectively arranged on the PCB board, the second etched antenna being provided with a second contact position, and the second patch antenna being electrically connected to the second contact position; and a Bluetooth component, comprising a third etched antenna and a third patch antenna, the third etched antenna and the third patch antenna being respectively arranged on the PCB board, the third etched antenna being provided with a third contact position, and the third patch antenna being electrically connected to the third contact position.

[0006] The PCB board is provided with a first storage area, a second storage area, and a third storage area. The first etched antenna and the first patch antenna are respectively arranged in the first storage area, the second etched antenna and the second patch antenna are respectively arranged in the second storage area, and the first patch antenna and the second patch antenna are symmetrically arranged with respect to the midline of the third storage area.

[0007] The first contact position includes a first feeding point and a first conducting point, the first feeding point and the first conducting point are respectively arranged in the first storage area at intervals, and the first patch antenna is electrically connected to the first feeding point and the first conducting point respectively.

[0008] The second contact position includes a second feeding point and a second conducting point, the second feeding point and the second conducting point are respectively arranged at intervals in the second storage area, and the second patch antenna is electrically connected to the second feeding point and the second conducting point respectively.

[0009] The number of the first feeding points is the same as the number of the first conducting points.

[0010] The number of the second feeding points is the same as the number of the second conduction points.

[0011] The PCB board is further provided with a fourth storage area, and the third etched antenna and the third patch antenna are respectively arranged in the fourth storage area.

[0012] It also includes a third feeding point, which is arranged in the fourth storage area and is electrically connected to the third patch antenna.

[0013] It also includes a debugging point, which is arranged in the third storage area.

[0014] The first feeding point and the first conduction point are parallel to each other, and the second feeding point and the second conduction point are parallel to each other.

[0015] Compared with the prior art, the present invention has at least the following advantages:

[0016] In this application, the first etched antenna, the first patch antenna, the second etched antenna, the second patch antenna, the third etched antenna and the third patch antenna are all arranged on a PCB board, so that all multi-band antennas are integrated on a single PCB board, replacing the traditional method of using independent modular design methods for multi-band antennas. This greatly reduces the space occupied by the antennas and makes the overall structure more compact, thereby making the smart home thinner and lighter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments.

[0018] Figure 1 is a structural schematic diagram of a multi-band compact antenna structure in one embodiment of the present invention;

[0019] Figure 2 A schematic structural diagram of another implementation of a multi-band compact antenna structure according to an embodiment of the present invention;

[0020] Figure 3 is a schematic structural diagram of a first patch antenna in one embodiment of the present invention;

[0021] Figure 4is a schematic structural diagram of a second patch antenna in one embodiment of the present invention;

[0022] Figure 5 4 is a schematic structural diagram of a third patch antenna in an embodiment of the present invention. DETAILED DESCRIPTION

[0023] The following describes embodiments of the present application in more detail with reference to the accompanying drawings. Although the accompanying drawings illustrate embodiments of the present application, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0024] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. 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, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," and the like should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0026] Currently, smart homes are generally equipped with Wi-Fi to facilitate communication with mobile devices. In related technologies, multi-band antennas for smart homes are usually designed using independent modularization, which takes up a lot of space inside the smart home.

[0027] To address the above-mentioned problems, an embodiment of the present application provides a multi-band compact antenna structure, which can integrate the multi-band antenna on a circuit board, thereby reducing the overall space occupied by the antenna.

[0028] The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0029] See Figure 1A multi-band compact antenna structure includes: a PCB board 100, a first WIFI component 200, a second WIFI component 300 and a Bluetooth component 400, the first WIFI component 200 includes a first etched antenna 210 and a first patch antenna 220, the first etched antenna 210 and the first patch antenna 220 are respectively arranged on the PCB board 100, the first etched antenna 210 is provided with a first contact position 211, and the first patch antenna 220 is electrically connected to the first contact position 211; the second WIFI component 300 includes a second etched antenna 310 and a first patch antenna 220. The second patch antenna 320, the second etched antenna 310 and the second patch antenna 320 are respectively arranged on the PCB board 100, the second etched antenna 310 is provided with a second contact position 311, and the second patch antenna 320 is electrically connected to the second contact position 311; the Bluetooth component 400 includes a third etched antenna 410 and a third patch antenna 420, the third etched antenna 410 and the third patch antenna 420 are respectively arranged on the PCB board 100, the third etched antenna 410 is provided with a third contact position 411, and the third patch antenna 420 is electrically connected to the third contact position 411.

[0030] It should be noted that the first etched antenna 210 and the second etched antenna 310 are both 2.4GHz Wi-Fi antennas. They are set on the PCB board 100 by etching, and the etching pattern is not limited. The first patch antenna 220 and the second patch antenna 320 are both thin metal patch 5GHz Wi-Fi antennas, using stainless steel as the radiator, and utilizing the high conductivity of metal materials to improve the radiation efficiency of high-frequency signals. The third etched antenna 410 and the third patch antenna 420 are both Bluetooth antennas. The Bluetooth component 400 adopts the form of a combination of an etched antenna and a patch antenna, and utilizes the patch antenna to enhance Bluetooth performance. The pattern of the third etched antenna 410 can be diverse, and this application does not limit it.

[0031] In the present application, the first etched antenna 210, the first patch antenna 220, the second etched antenna 310, the second patch antenna 320, the third etched antenna 410 and the third patch antenna 420 are all arranged on the PCB board 100, so that all multi-band antennas are integrated on a single PCB board 100, replacing the traditional independent modular design method of multi-band antennas. This greatly reduces the space occupied by the antenna and makes the overall structure more compact, thereby making the smart home thinner and lighter.

[0032] See Figure 1In one embodiment, a first storage area 110, a second storage area 120, and a third storage area 130 are defined on the PCB board 100. The first etched antenna 210 and the first patch antenna 220 are respectively disposed in the first storage area 110. The second etched antenna 310 and the second patch antenna 320 are respectively disposed in the second storage area 120. The first patch antenna 210 and the second patch antenna 320 are symmetrically disposed about the center line of the third storage area 130.

[0033] It should be noted that the first storage area 110 and the second storage area 120 are located on either side of the third storage area 130. Furthermore, the present application also includes a debugging point 500, which is set in the third storage area 130. The debugging point 500 can be electrically connected to a metal device for debugging, thereby increasing the isolation between the Wi-Fi antennas.

[0034] See Figure 1 In one embodiment, the first contact position 211 includes a first feeding point 2111 and a first conducting point 2112. The first feeding point 2111 and the first conducting point 2112 are respectively spaced apart within the first storage area 110, and the first patch antenna 220 is electrically connected to the first feeding point 2111 and the first conducting point 2112, respectively. Specifically, the second contact position 311 includes a second feeding point 3111 and a second conducting point 3112. The second feeding point 3111 and the second conducting point 3112 are respectively spaced apart within the second storage area 120, and the second patch antenna 320 is electrically connected to the second feeding point 3111 and the second conducting point 3112, respectively. Specifically, the number of first feeding points 2111 is the same as the number of first conducting points 2112. Specifically, the number of second feeding points 3111 is the same as the number of second conducting points 3112. Specifically, the first feeding point 2111 and the first conducting point 2112 are parallel to each other, and the second feeding point 3111 and the second conducting point 3112 are parallel to each other.

[0035] It should be noted that there are two first conducting points 2112, two first feeding points 2111, two second feeding points 3111, and two second conducting points 3112. The first feeding points 2111 and the second feeding points 3111 are ground connection points.

[0036] See Figure 1 In one embodiment, the PCB 100 further defines a fourth storage area 140, wherein the third etched antenna 410 and the third patch antenna 420 are respectively disposed within the fourth storage area 140. Specifically, the PCB 100 further includes a third feeding point 600 disposed within the fourth storage area 140 and electrically connected to the third patch antenna 420.

[0037] It should be noted that the fourth storage area 140 is a space for placing the Bluetooth component 400, and is located on one side of the first storage area 110. The third feeding point 600 is a ground connection point.

[0038] Further, in another embodiment, the first patch antenna 220 includes a first transmission block 221, a first bending block 222, a second transmission block 223, a third transmission block 224, a fourth transmission block 225, a first support foot 226 and a second support foot 227, the first transmission block 221 is connected to the first bending block 222, the second transmission block 223 is connected to the first transmission block 221, the third transmission block 224 is arranged at one end of the second transmission block 223, the fourth transmission block 225 is arranged at the other end of the second transmission block 223, the first support foot 226 is arranged on the third transmission block 224, the second support foot 227 is arranged on the fourth transmission block 225, the first support foot 226 is electrically connected to the first feeding point 2111, the second support foot 227 is electrically connected to the first conduction point 2112, the vertical distance from the second transmission block 223 to the PCB board 100 is 2 mm, and the first transmission block 221 is not flush with the first etched antenna 210.

[0039] It should be noted that the thickness of the first transmission block 221, the first bending block 222, the second transmission block 223, the third transmission block 224, and the fourth transmission block 225 are all 0.3 mm. The first bending block 222, the second transmission block 223, the third transmission block 224, the fourth transmission block 225, the first support leg 226, and the second support leg 227 are all located within the first etched antenna 210, thereby reducing the space occupied by the antenna. The antenna's arched design conforms to the edge of the PCB 100, leveraging the high conductivity of metal materials to improve the radiation efficiency of high-frequency signals while avoiding the height limitations of conventional antennas due to their large size. Specifically, the second transmission block 223, the third transmission block 224, and the fourth transmission block 225 form a structure with an arched cross-section. This arched structure achieves a more three-dimensionally symmetrical current distribution, forming a nearly omnidirectional radiation pattern in the horizontal direction, reducing signal blind spots. The varying curvature of the arched edges smoothes the current distribution, avoiding current concentration and electromagnetic scattering caused by right or sharp angles. In addition, the vertical distance between the second transmission block and the PCB board 100 is 2 mm, which can reduce the edge effect of the ground plane and the coupling interference of metal components.

[0040] It should also be noted that the surface area of the third transmission block 224 is larger than that of the fourth transmission block 225. This is to provide support and increase the area of the third transmission block 224 within a limited space. Antennas generate radiation fields through the distribution of surface currents, and a larger surface area provides more current distribution paths, thereby enhancing radiation capability. Preferably, the first bending block 222 enhances the overall pressure-bearing capacity of the antenna, creating a balance with the third transmission block 224.

[0041] Preferably, a straight-line distance from an end of the first transmission block 221 away from the fourth transmission block 225 to an end of the fourth transmission block 225 away from the first transmission block 221 is 9.3 mm.

[0042] Furthermore, in another embodiment, the second patch antenna 320 includes a fifth transmission block 321, a second bending block 322, a sixth transmission block 323, a seventh transmission block 324, an eighth transmission block 325, a third support leg 326 and a fourth support leg 327, wherein the fifth transmission block 321 is connected to the second bending block 322, the sixth transmission block 323 is connected to the fifth transmission block 321, the seventh transmission block 324 is arranged at one end of the sixth transmission block 323, and the eighth transmission block 325 is arranged at one end of the sixth transmission block 323. Placed at the other end of the sixth transmission block 323, the third supporting foot 326 is set on the seventh transmission block 324, and the fourth supporting foot 327 is set on the eighth transmission block 325. The third supporting foot 326 is electrically connected to the second feeding point 3111, and the fourth supporting foot 327 is electrically connected to the second conduction point 3112. The vertical distance from the sixth transmission block 323 to the PCB board 100 is 2 mm, and the fifth transmission block 321 is not flush with the second etched antenna 310.

[0043] It should be noted that the fifth transmission block 321, the second bending block 322, the sixth transmission block 323, the seventh transmission block 324, and the eighth transmission block 325 all have a thickness of 0.3 mm. Furthermore, the fifth transmission block 321, the second bending block 322, the sixth transmission block 323, the seventh transmission block 324, the eighth transmission block 325, the third support leg 326, and the fourth support leg 327 are all located within the second etched antenna 310, thereby reducing the space occupied by the antenna. The antenna's arched design conforms to the edge of the PCB 100, leveraging the high conductivity of metal materials to improve the radiation efficiency of high-frequency signals while avoiding the height limitations of conventional antennas due to their large size. Specifically, the sixth transmission block 323, the seventh transmission block 324, and the eighth transmission block 325 form a structure with an arched cross-section. This arched structure achieves a more three-dimensionally symmetrical current distribution, forming a nearly omnidirectional radiation pattern in the horizontal direction, reducing signal blind spots. The varying curvature of the arched edges smoothes the current distribution, avoiding current concentration and electromagnetic scattering caused by right or sharp angles. In addition, the vertical distance between the sixth transmission block and the PCB board 100 is 2 mm, which can reduce the edge effect of the ground plane and the coupling interference of metal components.

[0044] It should also be noted that the surface area of the eighth transmission block 325 is larger than that of the seventh transmission block. This is to provide support and increase the area of the eighth transmission block 325 within a limited space. Antennas generate radiation fields through the distribution of surface currents, and a larger surface area provides more current distribution paths, thereby enhancing radiation capability. Preferably, the second bending block 322 enhances the overall pressure-bearing capacity of the antenna, creating a balance with the eighth transmission block 325.

[0045] Preferably, a straight-line distance from an end of the fifth transmission block 321 away from the seventh transmission block 324 to an end of the seventh transmission block 324 away from the fifth transmission block 321 is 10.3 mm.

[0046] In another embodiment, the third patch antenna 420 includes a first metal block 421, a second metal block 422, a third bending block 423 and a fourth bending block 424, the first metal block 421 is connected to the second metal block 422, the third bending block 423 is arranged on the first metal block 421, the fourth bending block 424 is arranged on the second metal block 422, the fourth bending block 424 is electrically connected to the third feeding point 600, and the third bending block 423 is electrically connected to the third contact position 411.

[0047] It should be noted that the first metal block 421 and the second metal block 422 are connected to form a large "L"-shaped cross-section structure, thereby increasing the area of the Bluetooth antenna and thus improving its radiation capability. Secondly, the provision of the third and fourth bent blocks 423 and 424 enhances the overall mechanical strength of the Bluetooth antenna, preventing deformation under pressure.

[0048] In another embodiment, a multi-band compact antenna structure further includes a first inductor 700 and a second inductor 800 . The first inductor 700 is electrically connected to the first etched antenna 210 , and the second inductor 800 is electrically connected to the second etched antenna 310 .

[0049] It should be noted that the setting of the first inductor 700 and the second inductor 800 can facilitate the adjustment of the standing wave of the antenna. On the other hand, the impedance matching can be optimized. Specifically, the input impedance of the etched antenna needs to match the characteristic impedance of the transmission line, which is usually 50Ω. The inductor can be used as a key component of the L-type / π-type matching network, which can offset the capacitive or inductive reactance of the antenna. Secondly, the introduction of the inductor can increase the inductive reactance of the antenna, which effectively increases the electrical length, thereby operating at a lower frequency at the same physical length, or reducing the antenna size at the same frequency. For example, a 2.4GHz half-wave dipole without an inductor requires about 31mm. After loading a 5nH inductor, the physical length can be shortened to 22mm while keeping the resonant frequency unchanged. Finally, the inductor presents high impedance to high-frequency signals, which can suppress the second harmonic of the antenna and avoid interference with other frequency bands.

[0050] The scheme of the present application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have their own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the description are not necessarily required for this application. In addition, it is understood that the steps in the method of the embodiment of the present application can be adjusted in sequence, merged and deleted according to actual needs, and the modules in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0051] The embodiments of the present application have been described above. The above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to the technology in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. A multi-band compact antenna structure, characterized in that: include: PCB board; A first Wi-Fi component includes a first etched antenna and a first patch antenna, wherein the first etched antenna and the first patch antenna are respectively disposed on the PCB board, the first etched antenna is provided with a first contact position, and the first patch antenna is electrically connected to the first contact position; A second Wi-Fi component includes a second etched antenna and a second patch antenna, wherein the second etched antenna and the second patch antenna are respectively disposed on the PCB board, the second etched antenna is provided with a second contact position, and the second patch antenna is electrically connected to the second contact position; and The Bluetooth component includes a third etched antenna and a third patch antenna, wherein the third etched antenna and the third patch antenna are respectively arranged on the PCB board, the third etched antenna is provided with a third contact position, and the third patch antenna is electrically connected to the third contact position.

2. The multi-band compact antenna structure according to claim 1, characterized in that: The PCB board is provided with a first storage area, a second storage area, and a third storage area. The first etched antenna and the first patch antenna are respectively arranged in the first storage area, the second etched antenna and the second patch antenna are respectively arranged in the second storage area, and the first patch antenna and the second patch antenna are symmetrically arranged with respect to the midline of the third storage area.

3. The multi-band compact antenna structure according to claim 2, characterized in that: The first contact position includes a first feeding point and a first conducting point, the first feeding point and the first conducting point are respectively arranged in the first storage area at intervals, and the first patch antenna is electrically connected to the first feeding point and the first conducting point respectively.

4. The multi-band compact antenna structure according to claim 3, characterized in that: The second contact position includes a second feeding point and a second conducting point, the second feeding point and the second conducting point are respectively arranged at intervals in the second storage area, and the second patch antenna is electrically connected to the second feeding point and the second conducting point respectively.

5. The multi-band compact antenna structure according to claim 3, characterized in that: The number of the first feeding points is the same as the number of the first conducting points.

6. The multi-band compact antenna structure according to claim 4, characterized in that: The number of the second feeding points is the same as the number of the second conduction points.

7. The multi-band compact antenna structure according to claim 1, characterized in that: The PCB board is further provided with a fourth storage area, and the third etched antenna and the third patch antenna are respectively arranged in the fourth storage area.

8. The multi-band compact antenna structure according to claim 7, characterized in that: It also includes a third feeding point, which is arranged in the fourth storage area and is electrically connected to the third patch antenna.

9. The multi-band compact antenna structure according to claim 2, characterized in that: It also includes a debugging point, which is arranged in the third storage area.

10. The multi-band compact antenna structure according to claim 4, characterized in that: The first feeding point and the first conduction point are parallel to each other, and the second feeding point and the second conduction point are parallel to each other.

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