Multi-band antenna and electronic equipment

Abstract

The utility model relates to a multi-band antenna and an electronic device. The multi-band antenna comprises a substrate, an antenna body, a ceramic patch and a feed port. The antenna body is electrically connected with the substrate, the antenna body at least comprises two working frequency bands, and the antenna body comprises a control branch knot and an antenna main body; the control branch knot is connected with the antenna main body through a ceramic patch; the feed port is connected to the antenna main body. According to the multi-band antenna in the embodiment, due to the fact that the control branch knot and the L-shaped tuning branch knot are arranged, the size of the antenna is reduced, the occupied space of the antenna is reduced, in addition, the antenna body comprises four working bands including the WIFI 2.4 G band, the WIFI 5G band, the WIFI 6E band and the 5G communication band n77 / 78 / 79, and the diversified use requirements and use scenes of users are met. Besides, the multi-band antenna can realize coverage of multiple bands by only one antenna, the installation process is simplified, the deployment cost and the maintenance difficulty are reduced, multiple antennas are integrated into one antenna, the number of the antennas is reduced, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, and in particular to a multi-band antenna and electronic equipment. Background Art

[0002] With the continuous advancement of wireless communication technology, people's demand for high-speed, stable, and seamless network connections is growing. Different communication standards and frequency bands have their own advantages in different scenarios. The WiFi 2.4G band has good penetration and coverage, suitable for basic network connections in homes and offices. The WiFi 5G band provides higher transmission speeds, meeting bandwidth-intensive applications such as HD video playback and online gaming. WiFi 6E further expands the 6GHz band based on the existing WiFi 6, reducing signal interference and improving network performance.

[0003] In the field of 5G communications, frequency bands such as n77, n78, and n79 are widely used in 5G network construction in different regions. These frequency bands each have different characteristics and advantages, meeting the communication needs of different users in different scenarios. However, for small electronic devices such as smartphones and wearables, limited space is a key design consideration. Traditional antennas often only support a single frequency band or a limited number of frequency bands. This means that when multiple frequency bands need to be used simultaneously, multiple antennas must be installed, which not only takes up space but also increases cost and complexity. Utility Model Content

[0004] The first purpose of the present invention is to provide a multi-band antenna, which aims to solve the technical problems that existing antennas cannot support the use of multiple frequency bands at the same time, occupy a large space and are complicated to install.

[0005] To solve the above technical problems, a multi-band antenna is provided, comprising:

[0006] substrate;

[0007] An antenna body electrically connected to the substrate, the antenna body including at least two operating frequency bands, and the antenna body including a control branch and an antenna body;

[0008] A ceramic patch, through which the control branch and the antenna body are connected;

[0009] The feeding port is connected to the antenna body.

[0010] Furthermore, the antenna body includes a main body portion and a tuning branch extending from a first side of the main body portion, and the tuning branch is arranged at one end close to the control branch.

[0011] Furthermore, there are two tuning branches and both are arranged on a side close to the control branch. The tuning branch includes a first extension segment and a second extension segment. The first extension segment extends in a vertical direction, and the second extension segment extends from the first extension segment in a horizontal direction.

[0012] Furthermore, the extending directions of the two second extending sections are opposite.

[0013] Furthermore, the antenna body further includes a parasitic branch extending from the first side of the main body toward a vertical direction.

[0014] Furthermore, the antenna body further includes a radiation branch extending from the main body toward a vertical direction, and the parasitic branch and the radiation branch are respectively arranged on opposite sides of the main body.

[0015] Furthermore, the operating frequency bands of the control branches include 2.4-2.5 GHZ and 5-7 GHZ; the operating frequency bands of the radiation branches include 3.3-4.2 GHZ and 5.95-7.125 GHZ; and the operating frequency bands of the parasitic branches include 5.15-5.85 GHZ.

[0016] Furthermore, the multi-band antenna further includes a ground pin extending from the second side of the main body.

[0017] Furthermore, the dielectric constant ER of the ceramic patch is 9.8.

[0018] A second object of the present invention is to provide an electronic device comprising:

[0019] Equipment body;

[0020] The multi-band antenna mentioned above is installed on the device body.

[0021] The implementation of the present invention will have the following beneficial effects:

[0022] The multi-band antenna in this embodiment, thanks to the control branch and L-shaped tuning branch, helps reduce the antenna's size and footprint. Furthermore, the antenna body includes four operating frequency bands: Wi-Fi 2.4G, Wi-Fi 5G, Wi-Fi 6E, and 5G communication bands n77 / 78 / 79, meeting diverse user needs and usage scenarios. Furthermore, the multi-band antenna only requires a single antenna to achieve coverage of multiple frequency bands, simplifying installation, reducing deployment costs and maintenance. Furthermore, by integrating multiple antennas into a single antenna, the number of antennas is reduced, which helps lower costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic structural diagram of the multi-band antenna according to an embodiment of the present utility model;

[0025] Figure 2 for Figure 1 A partial enlarged schematic diagram of point A in the middle;

[0026] Figure 3 This is a return loss diagram of the multi-band antenna according to an embodiment of the present utility model;

[0027] Figure 4 This is a radiation efficiency diagram of the multi-band antenna according to an embodiment of the present utility model;

[0028] Figure 5-Figure 8 The directional pattern of the multi-band antenna according to the embodiment of the present utility model;

[0029] Figure 9 This is a structural diagram of an electronic device according to an embodiment of the present utility model.

[0030] Wherein: 100, multi-band antenna; 110, substrate; 120, antenna body; 121, control branch; 122, antenna body; 1221, main body; 1222, tuning branch; 1222A, first extension; 1222B, second extension; 1223, parasitic branch; 1224, radiating branch; 130, ceramic patch; 140, feed port; 150, ground pin;

[0031] 200. Electronic device; 210. Device body. DETAILED DESCRIPTION

[0032] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] Please refer to Figures 1-8 The present invention provides a multi-band antenna 100, comprising a substrate 110, an antenna body 120, a ceramic patch 130, and a feed port 140. The antenna body 120 is electrically connected to the substrate 110 and includes at least two operating frequency bands. The antenna body 120 includes a control branch 121 and an antenna body 122. The control branch 121 and the antenna body 122 are connected via the ceramic patch 130. The feed port 140 is connected to the antenna body 122. For example, the substrate 110 is a circuit board, and LCP or PCB can be selected, with a dielectric constant ER of 3-4.4. Of course, other materials can also be used as the substrate 110. The functions of the control branch 121 are mainly reflected in the following aspects: First, by adjusting the length and position of the control branch 121, the input impedance of the antenna can be changed to match the characteristic impedance of the feed line, thereby achieving maximum power transmission. Second, the control branch 121 can fine-tune the resonant frequency of the antenna so that it operates within the desired frequency band. Third, control branch 121 can increase the antenna's bandwidth and improve its adaptability to frequency changes. Fourth, by precisely placing control branch 121, the antenna's radiation or reception capabilities in a specific direction can be enhanced. It should be noted that control branch 121 operates in the 2.4-2.5 GHz frequency band, with a harmonic resonant wave occurring at a high frequency of 5-7 GHz. Feed port 140 is used for antenna signal transmission.

[0036] Please refer to Figure 1 and Figure 2The multi-band antenna 100 in this embodiment, thanks to the provision of control branch 121 and L-shaped tuning branch 1222, helps reduce the antenna's size and footprint. Furthermore, antenna body 120 includes four operating frequency bands: Wi-Fi 2.4G, Wi-Fi 5G, Wi-Fi 6E, and 5G communication bands n77 / 78 / 79, meeting diverse user needs and usage scenarios. Furthermore, the multi-band antenna 100 only requires a single antenna to achieve coverage across multiple frequency bands, simplifying installation and reducing deployment costs and maintenance. Furthermore, by integrating multiple antennas into a single antenna, the number of antennas is reduced, further lowering costs.

[0037] Please refer to Figure 1 and Figure 2 In one possible embodiment, the antenna body 122 includes a main body 1221 and a tuning branch 1222 extending from a first side of the main body 1221, and the tuning branch 1222 is arranged at one end close to the control branch 121. Exemplarily, the tuning branch 1222 is used to tune the frequency deviation problem of 2.4-2.5GHZ, and tuning can be achieved by changing these two lengths. The tuning branch 1222 can significantly increase the impedance bandwidth of the antenna by changing the equivalent circuit parameters of the antenna. By using the tuning branch 1222, the antenna can cover multiple frequency bands. The tuning branch 1222 is arranged between the main body 1221 and the control branch 121.

[0038] Please refer to Figure 1 and Figure 2In one possible embodiment, two tuning branches 1222 are provided and both are provided on a side close to the control branch 121, and the tuning branch 1222 includes a first extension section 1222A and a second extension section 1222B, the first extension section 1222A extends in a vertical direction, and the second extension section 1222B extends from the first extension section 1222A in a horizontal direction. For example, that is to say, the tuning branch 1222 is L-shaped, and the application of the L-shaped tuning branch 1222 helps to achieve miniaturization of the antenna while maintaining or improving performance. The L-shaped tuning branch 1222 introduces additional inductance and capacitance through its specific geometric shape (L-shaped structure), and these elements can be regarded as inductors and capacitors in the circuit. This structure enables the antenna to achieve the necessary impedance matching without the need for additional components. Since the L-shaped branch is directly integrated into the antenna structure, the need for external matching circuits is reduced, thereby saving the overall space occupied by the antenna. This is crucial for reducing the size of the antenna, especially in portable devices with limited space. By adjusting the specific dimensions (length and width) of the L-shaped tuning branch 1222, the antenna's inductance and capacitance can be precisely altered, thereby adjusting the antenna's resonant frequency. This flexibility allows designers to adjust the antenna's operating frequency as needed, rather than relying solely on the antenna's physical dimensions. Using the L-shaped tuning branch 1222, designers can support multiple frequency bands within a relatively small antenna footprint. This means that a compact antenna can be designed that covers both lower and higher frequencies without having to design a separate antenna structure for each band. The unique structural features of the L-shaped tuning branch 1222 help increase the antenna's impedance bandwidth. This means the antenna can maintain good impedance matching across a wider frequency range, improving antenna efficiency and signal quality. This wide bandwidth performance enables the antenna to accommodate multiple wireless communication standards, such as LTE and 5G, without having to replace or redesign the antenna. This is particularly important in modern communications equipment, which often need to support multiple frequency bands and communication standards to provide comprehensive network compatibility. Using the L-shaped tuning branch 1222 reduces antenna design complexity by integrating the necessary matching components directly into the antenna structure, rather than relying on external circuitry. This not only simplifies the design process but also reduces manufacturing costs.

[0039] Please refer to Figure 1 and Figure 2In one possible implementation, the two second extension segments 1222B extend in opposite directions. For example, the two second extension segments 1222B extending in opposite directions can increase the antenna's impedance bandwidth, enabling the antenna to maintain good impedance matching and radiation efficiency over a wider frequency range. By adjusting the direction of the extension segments, the antenna's radiation pattern and directivity can be precisely controlled. The design of two oppositely extending segments helps achieve better directional radiation, thereby increasing signal transmission distance and reception sensitivity.

[0040] Please refer to Figure 1 and Figure 2 In one possible embodiment, antenna body 122 further includes a parasitic branch 1223 extending vertically from a first side of main body 1221. For example, parasitic branch 1223 can effectively broaden the antenna bandwidth by introducing an additional resonance point. Parasitic branch 1223 can also improve isolation between different antennas and reduce mutual interference. The design of parasitic branch 1223 can optimize antenna gain and improve signal transmission efficiency. Adjusting the size and position of parasitic branch 1223 can achieve better impedance matching and reduce reflection loss.

[0041] Please refer to Figure 1 and Figure 2 In one possible embodiment, the antenna body 122 further includes a radiating branch 1224 extending vertically from the main body 1221, and the parasitic branch 1223 and the radiating branch 1224 are respectively disposed on opposite sides of the main body 1221. For example, the radiating branch 1224 directly participates in the radiation process of electromagnetic waves, which helps improve the radiation efficiency of the antenna.

[0042] Please refer to Figure 1 and Figure 2 In one possible implementation, the operating frequency bands of control branch 121 include 2.4-2.5 GHz and 5-7 GHz; the operating frequency bands of radiating branch 1224 include 3.3-4.2 GHz and 5.95-7.125 GHz; and the operating frequency band of parasitic branch 1223 includes 5.15-5.85 GHz. For example, the multi-band antenna 100 of the present application integrates multiple operating frequency bands including WiFi 2.4G, WiFi 5G, WiFi 6E, and 5G bands n77, n78, and n79.

[0043] Please refer to Figure 1 and Figure 2In one possible embodiment, the multi-band antenna 100 further includes a ground pin 150 extending from the second side of the main body 1221. For example, the ground pin 150 can effectively isolate the antenna's ground loop from other parts of the device, thereby reducing electromagnetic interference (EMI) and radio frequency interference (RFI). By ensuring a good ground connection between the antenna and the device, signal integrity can be improved, signal reflection and attenuation can be avoided, and the efficiency and reliability of data transmission can be improved.

[0044] Please refer to Figure 1 and Figure 2 , in one possible embodiment, the dielectric constant ER of the ceramic patch 130 includes 9.8. Exemplarily, the ceramic patches 130 typically have a high dielectric constant (such as ER=9.8), which means that they can store more electrical energy in a smaller physical size. Therefore, by using ceramic materials with high dielectric constants, the physical size of the antenna can be significantly reduced. High dielectric constant materials not only reduce the volume of the antenna, but also improve its bandwidth and radiation efficiency. This is because these materials are able to store more energy in a smaller space, thereby enhancing the performance of the antenna. In general, the high dielectric constant of the ceramic patch 130 enables it to achieve the desired electrical performance in a smaller size.

[0045] like Figure 3-Figure 8 As shown, Figure 3 This is the return loss diagram of the multi-band antenna 100 of this application. Figure 4 is a radiation efficiency diagram of the multi-band antenna 100 of the present application, Figure 5-Figure 8 is the directional pattern of the multi-band antenna 100 of the present application. Figure 3 It can be seen that the return loss S11 of WIFI2.4G, WIFI5G, and WIFI6E is less than -10dB (generally, the return loss S11 of the antenna is less than -10dB, which is considered to be superior); the return loss S11 of WIFI2.4 is less than -7.4dB (performance <-6dB is OK, and -3dB performance efficiency in simulation can also be good in reality). At the same time, it covers the latest 5G communication frequency bands n77 (3.3GHz-3.8GHz), n78 (3.4GHz-4.2GHz), and n79 (4.4-5GHz). The return loss of the multi-band antenna 100 of this application is qualified. From Figure 4 It can be seen that the efficiency of the multi-band antenna 100 of the present application is greater than 50%, the efficiency of WIFI2.4 is greater than 80%, and the efficiency of WIFI 5G and WIFI6E is greater than 83%. Figure 5-Figure 8 The figure shows the directional performance of the multi-band antenna 100 of the present application. It can be seen that the multi-band antenna 100 of the present application has signals in every direction in the electronic device 200, and its performance is excellent.

[0046] Please refer to Figure 9 A second object of the present invention is to provide an electronic device 200, comprising a device body 210 and the multi-band antenna 100, wherein the multi-band antenna 100 is mounted on the device body 210. In this embodiment, the electronic device 200 is a tablet. However, in specific applications, the electronic device 200 may also be a smartphone, a laptop or desktop computer, an IoT device, a wearable device, or a public security or surveillance device, without further limitation.

[0047] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A multi-band antenna, characterized in that: include: substrate; An antenna body electrically connected to the substrate, the antenna body including at least two operating frequency bands, and the antenna body including a control branch and an antenna body; A ceramic patch, through which the control branch and the antenna body are connected; The feeding port is connected to the antenna body.

2. The multi-band antenna according to claim 1, wherein: The antenna body includes a main body portion and a tuning branch extending from a first side of the main body portion. The tuning branch is arranged at one end close to the control branch.

3. The multi-band antenna according to claim 2, wherein: There are two tuning branches and both are arranged on a side close to the control branch. The tuning branch includes a first extension section and a second extension section. The first extension section extends in a vertical direction, and the second extension section extends from the first extension section in a horizontal direction.

4. The multi-band antenna according to claim 3, wherein: The two second extending sections extend in opposite directions.

5. The multi-band antenna according to claim 2, wherein: The antenna body further includes a parasitic branch extending vertically from the first side of the main body.

6. The multi-band antenna according to claim 5, characterized in that: The antenna body further includes a radiation branch extending from the main body toward a vertical direction, and the parasitic branch and the radiation branch are respectively arranged on opposite sides of the main body.

7. The multi-band antenna according to claim 6, wherein: The operating frequency bands of the control branches include 2.4-2.5 GHZ and 5-7 GHZ; the operating frequency bands of the radiation branches include 3.3-4.2 GHZ and 5.95-7.125 GHZ; and the operating frequency bands of the parasitic branches include 5.15-5.85 GHZ.

8. The multi-band antenna according to claim 2, wherein: The multi-band antenna further includes a ground pin extending from the second side of the main body.

9. The multi-band antenna according to claim 1, wherein: The dielectric constant ER of the ceramic patch is 9.

8.

10. An electronic device, characterized in that: include: Equipment body; The multi-band antenna according to any one of claims 1 to 9, wherein the multi-band antenna is mounted on the device body.

Images