Antenna unit and communication equipment

Abstract

The embodiment of the utility model relates to the technical field of antennas, and discloses an antenna unit and communication equipment, the antenna unit comprises a circuit main board and an antenna module, the circuit main board comprises a first surface and a second surface which are oppositely arranged, the circuit main board is provided with a feeding point, the antenna module is arranged on the first surface, and the second surface is provided with a feeding port. The antenna module comprises a ceramic piece, a first antenna, a second antenna and a third antenna, the third antenna is arranged on the first surface, the first antenna, the ceramic piece and the third antenna are arranged in a stacked mode, the second antenna is arranged on the side face of the ceramic piece, the feeding point is connected with the third antenna, and the feeding point is connected with the ceramic piece. And the first antenna, the second antenna and the third antenna respectively control different frequency bands. Through the above mode, coverage of multiple frequency bands of one antenna can be realized, and the purpose of miniaturization of the antenna is further achieved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of antenna technology, and in particular, to an antenna unit and a communication device. Background Art

[0002] With the rapid development of wireless communication technology, Ultra-Wideband (UWB) technology has been widely used in wireless communication, indoor positioning, Internet of Things and other fields due to its high bandwidth, low power consumption, high positioning accuracy and other characteristics. Especially in the field of high-precision positioning, UWB technology has become a popular technology in the market with its unique advantages, such as centimeter-level positioning accuracy and strong anti-interference ability.

[0003] During the implementation of the embodiments of the present application, the inventors found that the operating frequency band of the UWB antenna usually covers a wide range from 3.1 GHz to 10.6 GHz, and this frequency band can be further divided into multiple sub-bands, such as low frequency band (3.1 GHz to 4.8 GHz), mid-frequency band (6.0 GHz to 8.5 GHz) and high frequency band (8.5 GHz to 10.6 GHz). The frequency allocation and application scenarios in different frequency bands are different. It is difficult for current UWB antennas to integrate multiple frequency bands into one antenna. Utility Model Content

[0004] The main technical problem solved by the embodiments of the present application is to provide an antenna unit. By setting an antenna module, the antenna module includes a ceramic part, a first antenna, a second antenna and a third antenna, so as to achieve coverage of multiple frequency bands by one antenna and further achieve the purpose of miniaturization of the antenna.

[0005] In order to solve the above technical problems, a technical solution adopted in an embodiment of the present application is: providing an antenna unit, including a circuit main board and an antenna module, the circuit main board including a first surface and a second surface arranged opposite to each other, the circuit main board is provided with a feeding point, the antenna module is arranged on the first surface, the antenna module includes a ceramic part, a first antenna, a second antenna and a third antenna, the third antenna is arranged on the first surface, the first antenna, the ceramic part and the third antenna are stacked, the second antenna is arranged on the side of the ceramic part, the feeding point is connected to the third antenna, and the first antenna, the second antenna and the third antenna respectively control different frequency bands.

[0006] Optionally, the antenna unit further includes a fourth antenna, which is disposed on the second surface and encloses the third antenna.

[0007] Optionally, the third antenna includes a first slot stub, a second slot stub, and a third slot stub. The two ends of the second slot stub are respectively connected to the first slot stub and the third slot stub, and the first slot stub and the third slot stub are arranged in parallel. The feeding point is connected to the second slot stub.

[0008] Optionally, the fourth antenna includes a first L-shaped slot, a second L-shaped slot, a third L-shaped slot, and a fourth L-shaped slot. The first L-shaped slot, the second L-shaped slot, the third L-shaped slot, and the fourth L-shaped slot are respectively arranged at the four corners of the ceramic component.

[0009] Optionally, the first antenna includes a fifth slot stub, a sixth slot stub, a seventh slot stub, and an eighth slot stub. The two ends of the sixth slot stub are respectively connected to the fifth slot stub and the seventh slot stub, and the fifth slot stub, the sixth slot stub, and the seventh slot stub enclose a U-shaped groove. The eighth slot stub and the sixth slot stub are arranged in parallel.

[0010] Optionally, the third antenna is an H-shaped groove.

[0011] Optionally, the circuit board includes a first board body, a dielectric resonator board body, and a second board body. The dielectric resonator board body includes a third surface and a fourth surface arranged opposite to each other. The first board body is arranged on the third surface, the second board body is arranged on the fourth surface, and the antenna module is arranged on the first board body.

[0012] Optionally, the antenna unit includes a plurality of metal posts. The dielectric resonator board body is provided with a plurality of through holes, and one metal post passes through one through hole and abuts against the first board body and the second board body respectively.

[0013] Optionally, the dielectric constant of the dielectric resonator board body is 4.4.

[0014] To solve the above technical problems, another technical solution adopted in the embodiments of the present application is: to provide a communication device including any one of the above antenna units.

[0015] An embodiment of the present application provides an antenna unit, which includes a circuit main board and an antenna module. The circuit main board includes a first surface and a second surface arranged opposite to each other. The circuit main board is provided with a feeding point. The antenna module is arranged on the first surface. The antenna module includes a ceramic component, a first antenna, a second antenna, and a third antenna. The third antenna is arranged on the first surface. The first antenna, the ceramic component, and the third antenna are stacked. The second antenna is arranged on the side surface of the ceramic component. The feeding point is connected to the third antenna. And the first antenna, the second antenna, and the third antenna respectively control different frequency bands. Through the above settings, the first antenna and the second antenna control the signal output of the 6.5 GHz frequency band, and the third antenna controls the signal output of the high frequency of 8.5 GHz. And combined with the ceramic component, it can achieve the coverage of multiple frequency bands by one antenna module, and further achieve the purpose of antenna miniaturization. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts do not necessarily draw according to the actual ratio.

[0017] Figure 1 is a schematic diagram of the antenna unit according to the embodiment of the present application;

[0018] Figure 2 is Figure 1 the enlarged view of part A in

[0019] Figure 3 is a schematic diagram of the antenna module according to the embodiment of the present application;

[0020] Figure 4 is another schematic diagram of the antenna module according to the embodiment of the present application;

[0021] Figure 5 is yet another schematic diagram of the antenna module according to the embodiment of the present application;

[0022] Figure 6 is a schematic diagram of the frequency coverage of the antenna unit according to the embodiment of the present application.

[0023] The reference numerals in the specific embodiments are as follows: 100, antenna unit; 10, circuit main board; 101, first surface; 20, antenna module; 201, ceramic component; 202, first antenna; 203, second antenna; 204, third antenna; 30, fourth antenna; 241, first slot stub; 242, second slot stub; 243, third slot stub; 301, first L-shaped slot; 302, second L-shaped slot; 303, third L-shaped slot; 304, fourth L-shaped slot; 221, fifth slot stub; 222, sixth slot stub; 223, seventh slot stub; 224, eighth slot stub; 104, first plate body; 105, dielectric resonator plate body; 106, second plate body; 40, metal post. Specific embodiments

[0024] To facilitate the understanding of the present application, the present application will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The terms "upper", "lower", "inner", "outer", "vertical", "horizontal", etc. used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not used to limit the present application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0026] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0027] In wireless communication and positioning systems, the antenna module 20 is an indispensable component. The antenna module 20 is responsible for the transceiver of electromagnetic signals and is the basis for realizing communication functions. Especially in UWB (Ultra-Wideband) technology, the performance of the antenna module 20 directly affects the positioning accuracy and communication quality of the system.

[0028] Traditional antenna module 20 designs often have some problems, such as large volume, high cost, incomplete frequency band coverage, etc. In addition, for the integration of circuit board 10 and antenna module 20, traditional design methods usually set antenna module 20 on one side of circuit board 10, resulting in low space utilization and being unfavorable for the optimization of antenna performance.

[0029] Please refer to Figure 1 , Figure 2 and Figure 3 , in order to overcome these problems, the present technology proposes a new design scheme for circuit board 10 and antenna module 20. Please refer to Figure 1 , the antenna unit 100 includes: circuit board 10 and antenna module 20, the circuit board 10 includes a first surface 101 and a second surface (not shown in the figure) arranged opposite to each other, the circuit board 10 is provided with a feeding point, the antenna module 20 is arranged on the first surface 101, the antenna module 20 includes a ceramic part 201, a first antenna 202, a second antenna 203 and a third antenna 204, the third antenna 204 is arranged on the first surface 101, the first antenna 202, the ceramic part 201 and the third antenna 204 are stacked, which can reduce the volume of the antenna module 20 and also improve the space utilization rate. At the same time, the use of the ceramic part 201 enhances the stability and radiation efficiency of the antenna. The second antenna 203 is arranged on the side surface of the ceramic part 201, the feeding point is connected to the third antenna 204, and the first antenna 202, the second antenna 203 and the third antenna 204 respectively control different frequency bands. Specifically, please refer to Figure 6 , the first antenna 202 and the second antenna 203 control the signal output of the 6.5 GHZ frequency band, the third antenna 204 controls the signal output of the high frequency 8.5 GHZ, and the feeding point is connected to the third antenna 204 to provide electrical energy for the antenna module 20. Through the above settings, miniaturization, low cost and wide frequency band coverage of the antenna module 20 are achieved.

[0030] The second antenna 203 is arranged between the first antenna 202 and the third antenna 204. By arranging the second antenna 203, it helps to enhance the coupling effect between the first antenna 202 and the second antenna 203, thereby improving the overall efficiency of the antenna unit 100. And the second antenna 203 is arranged between the first antenna 202 and the third antenna 204, which helps to protect the second antenna 203 from external environmental interference.

[0031] Please refer to FIG. 4. The third antenna 204 includes a first slot stub 241, a second slot stub 242, and a third slot stub 243. The two ends of the second slot stub 242 are respectively connected to the first slot stub 241 and the third slot stub 243, and the first slot stub 241 and the third slot stub 243 are arranged in parallel. The feeding point is connected to the second slot stub 242, and the third antenna 204 is an H-shaped slot. Through the above settings, the signal output of high frequency 8.5 GHz can be controlled. The H-shaped slot increases the length of the slot, which helps to control the radiation characteristics in the high-frequency band, achieve good broadband matching characteristics, and the three slot stubs are interconnected, which can enhance the coupling effect between the slots and improve the overall efficiency of the antenna.

[0032] Please refer to Figure 3 and Figure 5 The antenna unit 100 further includes a fourth antenna 30. The fourth antenna 30 is disposed on the second surface (not shown in the figure), and the fourth antenna 30 encloses the third antenna 204. Through the fourth unit, not only can the third antenna 204 be protected from external interference, but also the radiation pattern and frequency band coverage of the antenna can be optimized, further realizing miniaturization and increasing the current path length of the antenna module 20. Specifically, the fourth antenna 30 includes a first L-shaped slot 301, a second L-shaped slot 302, a third L-shaped slot 303, and a fourth L-shaped slot 304. The first L-shaped slot 301, the second L-shaped slot 302, the third L-shaped slot 303, and the fourth L-shaped slot 304 are respectively disposed at the four corners of the ceramic member 201. Through the above settings, the third antenna 204 can have better radiation performance, while reducing interference between antennas and improving the stability of the system.

[0033] Please refer to Figure 4 The first antenna 202 includes a fifth slot stub 221, a sixth slot stub 222, a seventh slot stub 223, and an eighth slot stub 224. The two ends of the sixth slot stub 222 are respectively connected to the fifth slot unit and the seventh slot unit, and the fifth slot stub 221, the sixth slot stub 222, and the seventh slot stub 223 enclose to form a U-shaped slot. The eighth slot stub 224 and the sixth slot stub 222 are arranged in parallel. Through the above settings, the fifth slot stub 221, the sixth slot stub 222, the seventh slot stub 223, and the eighth slot stub 224 cooperate with each other to radiate the signal output of intermediate frequency 6.5 GHz, and the eighth slot stub 224 and the sixth slot stub 222 are arranged in parallel, which is beneficial to improving the radiation pattern of the antenna and achieving uniform radiation.

[0034] Please refer back to Figure 1, the circuit main board 10 includes a first board body 104, a dielectric resonator board body 105, and a second board body 106. The dielectric resonator board body 105 includes a relatively arranged third surface (not shown in the figure) and a fourth surface (not shown in the figure). The first board body 104 is disposed on the third surface, and the second board body 106 is disposed on the fourth surface. The antenna module 20 is disposed on the first board body 104, so that the antenna module 20 can better utilize the resonance characteristics of the dielectric resonator board body 105 to improve the signal transceiver efficiency. At the same time, due to the presence of the dielectric resonator board body 105, the radiation pattern of the antenna module 20 can also be optimized to improve its radiation performance in multiple frequency bands. In the embodiment of the present application, the dielectric constant of the dielectric resonator board body 105 is 4.4.

[0035] In the embodiment of the present application, the antenna unit 100 includes a plurality of metal posts 40. The dielectric resonator board body 105 is provided with a plurality of through holes (not shown in the figure). One metal post 40 passes through one through hole and abuts against the first board body 104 and the second board body 106 respectively. In the above manner, the metal post 40 enhances the connection stability between the antenna module 20 and the circuit main board 10, so that the antenna module 20 is not easily affected by external factors, improving the stability of the system. And as a conductor, the metal post 40 has better conductivity than the traditional welding or wire connection method. Therefore, it can reduce the signal loss during transmission and improve the signal transmission efficiency of the system. In addition, the design of the metal post 40 and the through hole also simplifies the assembly process between the antenna module 20 and the circuit main board 10, improving the production efficiency.

[0036] The embodiment of the present application provides an antenna unit 100, including a circuit main board 10 and an antenna module 20. The circuit main board 10 includes a relatively arranged first surface 101 and a second surface (not shown in the figure). The circuit main board 10 is provided with a feeding point (not shown in the figure). The antenna module 20 is disposed on the first surface 101. The antenna module 20 includes a ceramic member 201, a first antenna 202, a second antenna 203, and a third antenna 204. The third antenna 204 is disposed on the first surface 101. The first antenna 202, the ceramic member 201, and the third antenna 204 are stacked. The second antenna 203 is disposed on the side surface of the ceramic member 201. The feeding point is connected to the third antenna 204. And the first antenna 202, the second antenna 203, and the third antenna 204 respectively control different frequency bands. Through the above settings, the first antenna 202 and the second antenna 203 control the signal output of the frequency band 6.5 GHz, and the third antenna 204 controls the signal output of the high frequency 8.5 GHz. And combined with the ceramic member 201, it achieves that an antenna module 20 can cover multiple frequency bands, and further achieves the purpose of antenna miniaturization.

[0037] The present application further provides an embodiment of a communication device. The communication device includes the above-mentioned antenna unit 100. For the specific structure and functions of the communication device, reference may be made to the above embodiments, which will not be elaborated herein. The above description is only an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. An antenna unit, characterized in that: include: A circuit main board, comprising a first surface and a second surface arranged opposite to each other, wherein the circuit main board is provided with a feeding point; An antenna module is arranged on the first surface, and the antenna module includes a ceramic part, a first antenna, a second antenna and a third antenna. The third antenna is arranged on the first surface, the first antenna, the ceramic part and the third antenna are stacked, the second antenna is arranged on the side of the ceramic part, the feeding point is connected to the third antenna, and the first antenna, the second antenna and the third antenna respectively control different frequency bands.

2. The antenna unit according to claim 1, characterized in that The antenna unit further includes a fourth antenna, which is disposed on the second surface and encloses the third antenna.

3. The antenna unit according to claim 1, characterized in that The third antenna includes a first slot branch, a second slot branch and a third slot branch, the two ends of the second slot branch are respectively connected to the first slot branch and the third slot branch, and the first slot branch and the third slot branch are arranged in parallel, and the feeding point is connected to the second slot branch.

4. The antenna unit according to claim 2, characterized in that The fourth antenna includes a first L-shaped slot, a second L-shaped slot, a third L-shaped slot and a fourth L-shaped slot, and the first L-shaped slot, the second L-shaped slot, the third L-shaped slot and the fourth L-shaped slot are respectively arranged at four corners of the ceramic component.

5. The antenna unit according to claim 1, characterized in that The first antenna includes a fifth slot branch, a sixth slot branch, a seventh slot branch and an eighth slot branch, the two ends of the sixth slot branch are respectively connected to the fifth slot branch and the seventh slot branch, and the fifth slot branch, the sixth slot branch and the seventh slot branch are enclosed to form a U-shaped groove, and the eighth slot branch and the sixth slot branch are arranged in parallel.

6. The antenna unit according to claim 1, characterized in that The third antenna is an H-shaped slot.

7. The antenna unit according to claim 1, characterized in that The circuit main board includes a first plate body, a dielectric resonant plate body and a second plate body, the dielectric resonant plate body includes a third surface and a fourth surface arranged opposite to each other, the first plate body is arranged on the third surface, the second plate body is arranged on the fourth surface, and the antenna module is arranged on the first plate body.

8. The antenna unit according to claim 7, characterized in that: The antenna unit includes a plurality of metal pillars. The dielectric resonance plate is provided with a plurality of through holes. One of the metal pillars passes through one of the through holes and abuts against the first plate and the second plate respectively.

9. The antenna unit according to claim 7, characterized in that: The dielectric constant of the dielectric resonance plate is 4.

4.

10. A communication device, characterized in that: Comprising the antenna unit as described in any one of claims 1-9.

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