Antenna assembly and electronic equipment

Abstract

The utility model provides an antenna assembly and electronic equipment, the antenna assembly comprises a first radiator and a second radiator, and a first groove is arranged between the first radiator and the second radiator; the first radiator and the second radiator are grounded; the antenna matching circuit comprises an antenna port, a first capacitor, a first inductor, a second inductor, a second capacitor and a radio frequency port; the antenna port is connected in series with the first capacitor, and the first capacitor is connected in parallel with the first inductor; the first capacitor, the second inductor and the radio frequency port are connected in series, and the second capacitor and the second inductor are connected in parallel; the antenna port is connected with the first radiator; and a feed structure, wherein the feed structure is connected with the radio frequency port. The utility model aims to solve the technical problem of complex structure of a multi-frequency integrated antenna in the prior art.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to antenna components and electronic equipment. Background Art

[0002] To address the pain point of poor isolation caused by the numerous connected antennas in 5G mobile phones, existing technologies have adopted multi-band integrated antenna solutions. In existing technologies, a single antenna integrates multiple frequency bands, but switches are required to switch between frequency bands, resulting in a complex structure and difficult control. Utility Model Content

[0003] The main purpose of this application is to provide an antenna assembly and electronic equipment, aiming to solve the technical problem of complex multi-frequency integrated antenna structure in the prior art.

[0004] The present application proposes an antenna assembly, comprising:

[0005] a first radiator and a second radiator, wherein a first slot is provided between the first radiator and the second radiator; and the first radiator and the second radiator are grounded;

[0006] An antenna matching circuit, the antenna matching circuit comprising an antenna port, a first capacitor, a first inductor, a second inductor, a second capacitor, and a radio frequency port; the antenna port is connected in series with the first capacitor, and the first capacitor is connected in parallel with the first inductor; the first capacitor, the second inductor, and the radio frequency port are connected in series, and the second capacitor is connected in parallel with the second inductor; the antenna port is connected to the first radiator; and

[0007] A feeding structure is connected to the radio frequency port.

[0008] Optionally, the first capacitance is 1.6-2.0 pF, the first inductance is 3.3-3.7 nH, the second inductance is 0.8-1.2 nH, and the second capacitance is 0.2-0.4 pF.

[0009] Optionally, the first capacitance is 1.8 pF, the first inductance is 3.5 nH, the second inductance is 1 nH, and the second capacitance is 0.3 pF.

[0010] Optionally, the first inductor and the second capacitor are grounded.

[0011] Optionally, the first radiator has a first end away from the second radiator and an electrical connection structure connected to the antenna port;

[0012] The horizontal distance between the electrical connection structure and the first end is L1; the value of L1 is 20-25mm;

[0013] The vertical distance between the electrical connection structure and the first end is L2; ​​the value of L2 is 18-22 mm;

[0014] The distance between the electrical connection structure and the first grounding point of the first radiator is L3; the value of L3 is 5-7 mm.

[0015] Optionally, the value of L1 is 22.5 mm, the value of L2 is 20.5 mm, and the value of L3 is 6 mm.

[0016] Optionally, the first radiator has a horizontal section and a vertical section; the horizontal section is connected to an end of the vertical section away from the second radiator;

[0017] The distance between the first grounding point and the horizontal section is L4; the value of L4 is 10-15 mm.

[0018] Optionally, the width of the first groove is L5; the value of L5 is 1.2-1.6 mm.

[0019] Optionally, the first grounding point of the first radiator and the second grounding point of the second radiator are distributed on both sides of the first slot, and a vertical distance therebetween is 18-21 mm.

[0020] In a second aspect, the present application further proposes an electronic device comprising the antenna assembly as described above.

[0021] In the technical solution of the embodiment of the present application, the second radiator is coupled to form a parasitic antenna of the first radiator, and is used to radiate energy in a certain frequency band; the first radiator is connected through the antenna port of the antenna matching circuit, and the RF port of the antenna matching circuit is connected to the RF port. Under the action of the first capacitor, the first inductor, the second inductor, and the first capacitor of the antenna matching circuit, the first radiator can radiate energy in several other frequency bands; under the coupling action of the second radiator and the first radiator, and under the action of the antenna matching circuit, the integrated antenna does not need to switch, and radiates energy in multiple frequency bands only under the action of capacitance and inductance, thereby reducing the structural complexity of the integrated antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application 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 application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the structure of the antenna assembly provided in an embodiment of the present application;

[0024] Figure 2 A schematic structural diagram of an antenna matching circuit of an antenna assembly provided in an embodiment of the present application;

[0025] Figure 3 A schematic diagram of the dimensions of the antenna assembly provided in an embodiment of the present application;

[0026] Figure 4 A resonance diagram of the antenna assembly provided in an embodiment of the present application;

[0027] Figure 5 A resonance diagram of the antenna assembly provided in an embodiment of the present application (without a low-pass matching circuit);

[0028] Figure 6 A Smith chart of the antenna assembly provided in an embodiment of the present application (without a low-pass matching circuit);

[0029] Figure 7 is a resonance diagram of an antenna assembly in the prior art;

[0030] Figure 8 It is the Smith chart of the antenna assembly in the prior art.

[0031] Reference Signs List

[0032] 110 The first radiator 131 Antenna port 120 Second radiator 132 First capacitor 130 Antenna matching circuit 133 First Inductor 140 Feed structure 134 Second inductor 150 The third radiator 135 Second capacitor 111 Electrical connection structure 136 RF port 112 First grounding point O First slot 121 Second grounding point DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0034] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0037] In the existing technology, one antenna integrates six frequency bands: GPS L1, GPS L5, Wi-Fi 2.4G, Wi-Fi 5G, Wi-Fi 6E, and LTE (Long Term Evolution) Band 32. However, it is not possible to support all six frequency bands simultaneously. Antenna switch hardware needs to be added to dynamically switch among the six frequency bands. That is, when the antenna switch is switched to state one, a single antenna supports GPS L1, LTE Band 32, Wi-Fi 2.4G, and Wi-Fi 5G simultaneously; when the antenna switch is switched to state two, a single antenna supports GPS L5, Wi-Fi 2.4G, and Wi-Fi 5G simultaneously; when the antenna switch is switched to state three, a single antenna supports Wi-Fi 2.4G, Wi-Fi 5G, and Wi-Fi 6E simultaneously. The advantage of this solution is that the antenna switch can dynamically cover six frequency bands. However, it requires the addition of components such as the antenna switch, which makes control difficult and the structure complex. Therefore, the existing technology needs further improvement.

[0038] Reference Figure 1 As shown, an embodiment of the present application provides an antenna assembly, comprising:

[0039] A first radiator 110 and a second radiator 120, wherein a first slot O is provided between the first radiator 110 and the second radiator 120; the first radiator 110 and the second radiator 120 are grounded;

[0040] An antenna matching circuit 130 includes an antenna port 131, a first capacitor 132, a first inductor 133, a second inductor 134, a second capacitor 135, and a radio frequency port 136; the antenna port 131 is connected in series with the first capacitor 132, and the first capacitor 132 is connected in parallel with the first inductor 133; the first capacitor 132, the second inductor 134, and the radio frequency port 136 are connected in series, and the second capacitor 135 is connected in parallel with the second inductor 134; the antenna port 131 is connected to the first radiator 110; and

[0041] A feeding structure 140 is connected to the RF port 136 .

[0042] In the technical solution of the embodiment of the present application, the second radiator 120 is coupled to form a parasitic antenna of the first radiator 110, which is used to radiate energy in a certain frequency band; the first radiator 110 is connected through the antenna port 131 of the antenna matching circuit 130, and the RF port 136 of the antenna matching circuit 130 is connected to the RF port 136. Under the action of the first capacitor 132, the first inductor 133, the second inductor 134, and the first capacitor 132 of the antenna matching circuit 130, the first radiator 110 can radiate energy in several other frequency bands; under the coupling action of the second radiator 120 and the first radiator 110, and under the action of the antenna matching circuit 130, the integrated antenna does not need to switch, and radiates energy in multiple frequency bands only under the action of capacitance and inductance, thereby reducing the structural complexity of the integrated antenna.

[0043] In some embodiments, the antenna assembly integrates the integrated antenna described in this patent, which integrates six frequency bands: Wi-Fi 2.4G, Wi-Fi 5G, Wi-Fi 6E, GPS L1, GPS L5, and LTE Band 32, with a high degree of frequency band integration. Among them, the frequency of GPS L5 is 1176MHz, the frequency of GPS L1 is 1575MHz, the frequency range of Wi-Fi 2.4G is 2400MHz to 2500MHz, the frequency range of Wi-Fi 5G is 5150MHz to 5850MHz, the frequency range of Wi-Fi 6E is 5925MHz to 7125MHz, and the frequency range of LTE Band 32 is 1452MHz to 1496MHz.

[0044] In an embodiment, the second radiator 120 can support Wi-Fi 2.4G under the coupling effect of the first radiator 110. In an embodiment, the first radiator 110 can support five frequency bands, namely Wi-Fi 5G, Wi-Fi 6E, GPS L1, GPS L5 and LTE Band 32, under the action of the antenna matching circuit 130. Specifically,

[0045] As an optional embodiment of the above embodiment, the first capacitor 132 has a value of 1.6-2.0 pF, the first inductor 133 has a value of 3.3-3.7 nH, the second inductor 134 has a value of 0.8-1.2 nH, and the second capacitor 135 has a value of 0.2-0.4 pF. Figure 2 As shown, starting from antenna port 131, a 1.6-2.0pF capacitor is first connected in series, followed by a 3.3-3.7nH inductor in parallel, followed by a 0.2-0.4pF capacitor, followed by a 0.8-1.2nH inductor, and finally to RF port 136. The "1.6-2.0pF capacitor connected in series first, followed by a 3.3-3.7nH inductor connected in parallel" is called a high-pass matching circuit, and the "3.3-3.7nH inductor connected in parallel, followed by a 0.2-0.4pF capacitor connected in parallel" is called a low-pass matching circuit. With the help of the high-pass matching circuit, the first radiator 110 can radiate energy from GPS L1, GPS L5, and LTE Band 32. Under the action of the low-pass matching circuit and the high-pass circuit, the second radiator 120 can radiate the energy of Wi-Fi 5G and Wi-Fi 6E, and basically will not affect the resonance of GPS L5, GPS L1, LTE Band32 and Wi-Fi2.4G.

[0046] As an optional method of the above embodiment, the first capacitor 132 has a value of 1.8pF, the first inductor 133 has a value of 3.5nH, the second inductor 134 has a value of 1nH, and the second capacitor 135 has a value of 0.3pF. Through further research by the inventors, it is found that the passive efficiencies of the six frequency bands of GPS L5, LTE Band32, GPS L1, Wi-Fi2.4G, Wi-Fi 5G and Wi-Fi 6E in free space are -5.1dB, -2.6dB, -2.5dB, -2.5dB, -3.3dB and -2.9dB respectively. The frequency band integration is high and the antenna performance is good. This integrated antenna solution effectively alleviates the pain point of poor isolation caused by the numerous connectivity antennas of 5G mobile phones and reduces the coupling between adjacent antennas in the same frequency band.

[0047] As an optional embodiment of the above embodiment, the first inductor 133 and the second capacitor 135 are grounded. In an embodiment, the antenna assembly further includes a metal middle frame, and the "grounding" in the above embodiment can be a ground terminal connected to the metal middle frame.

[0048] As an optional embodiment of the above embodiment, the first radiator 110 has a first end away from the second radiator 120 and an electrical connection structure 111 connected to the antenna port 131. In an embodiment, the electrical connection structure 111 can be constructed as a spring structure and connected to the antenna port 131. In an embodiment, the horizontal distance between the electrical connection structure 111 and the first end is L1; the value of L1 is 20-25mm; the vertical distance between the electrical connection structure 111 and the first end is L2; ​​the value of L2 is 18-22mm; the distance between the electrical connection structure 111 and the first grounding point 112 of the first radiator 110 is L3; the value of L3 is 5-7mm. This configuration allows the antenna assembly to radiate six frequency bands: GPS L5, LTE Band 32, GPS L1, Wi-Fi 2.4G, Wi-Fi 5G, and Wi-Fi 6E.

[0049] In an embodiment, the electrical connection structure 111 can be disposed at the second end of the first radiator 110, adjacent to the second radiator 120, with the second end and the first end being opposite each other. In this embodiment, when the antenna assembly is installed in an electronic device, the electrical connection structure 111 is located inside the first radiator 110. For structural reliability, the electrical connection structure 111 is located at the side, not in the corners of the electronic device's metal frame. This structure prevents the electrical connection structure 111 from falling if the electronic device is dropped.

[0050] In an embodiment, the width of the first ground point 112 may be set to 2-3 mm, such as 2.5 mm.

[0051] like Figure 1 As shown, the first radiator 110 is substantially L-shaped; the first radiator 110 , the feeding structure 140 , and the grounding point constitute an IFA (Inverted F Antenna) antenna.

[0052] In an embodiment, the antenna assembly further includes a third radiator 150, which is disposed near the first end and grounded. A second slot is formed between the third radiator 150 and the first radiator 110, and the width of the second slot is 1.5 mm.

[0053] As an alternative to the above embodiment, L1 is set to 22.5mm, L2 is set to 20.5mm, and L3 is set to 6mm. Further research by the inventors has shown that this configuration improves isolation for the six frequency bands of GPS L5, LTE Band 32, GPS L1, Wi-Fi 2.4G, Wi-Fi 5G, and Wi-Fi 6E, reducing coupling between adjacent antennas in the same frequency band.

[0054] As an alternative to the above embodiment, the first radiator 110 has a horizontal segment and a vertical segment; the horizontal segment is connected to an end of the vertical segment away from the second radiator 120; the distance between the first grounding point 112 and the horizontal segment is L4; and L4 is 10-15 mm. In an embodiment, L4 can be 12 mm.

[0055] As an alternative to the above embodiment, the width of the first slot O is L5; the value of L5 is 1.2-1.6 mm. In an embodiment, the value of L5 can be 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, or 1.6 mm. In some embodiments, the value of L5 can be 1.5 mm. Setting L5 to this range helps the antenna assembly to effectively radiate WiFi-2.4G energy.

[0056] As an alternative to the above embodiment, the first grounding point 112 of the first radiator 110 and the second grounding point 121 of the second radiator 120 are located on either side of the first slot O, with a vertical spacing of L6 between them. L6 is 18-21 mm. In some embodiments, L6 can be 18.5 mm. This arrangement effectively isolates the frequency bands radiated by the first radiator 110 and the second radiator 120, reducing mutual interference.

[0057] In the technical solution of the embodiment of the present application, the distance between the second grounding point 121 and the horizontal section can be 32-35 mm, for example, 30 mm. The width of the first radiator 110 and the second radiator 120 can be 2.0 mm. The distance between the metal middle frame and the horizontal section of the first radiator 110 is 2.5 mm, and the distance between the metal middle frame and the vertical section and the second radiator 120 is 3.0 mm. The distance between the second grounding point 121 and the first slot O is 11 mm.

[0058] Combine Figures 4 to 8 ; Figure 7 and Figure 8As shown, when there is no antenna matching circuit 130, the resonance (S11 figure) and Smith chart (Sith Chart) of the antenna. In the figure, label 1 corresponds to the frequency of GPS L5, label 2 corresponds to the starting frequency of LTE Band32 (the bandwidth of this frequency band is narrow, 44Hz, and the starting frequency is used to represent the entire frequency range), label 3 corresponds to the frequency of GPS L1, labels 4 to 5 correspond to the frequency range of Wi-Fi 2.4G, labels 6 to 7 correspond to the frequency range of Wi-Fi 5G, and labels 8 to 9 correspond to the frequency range of Wi-Fi 6E. When there is no matching circuit, it can be seen from the resonance diagram of the antenna that the IFA antenna only has an original resonance at 1.452GHz; it can be seen from the Smith chart that GPS L1, GPS L5 and LTE Band32 are relatively concentrated and located between the first and second quadrants, but not close to the center of the Smith chart. Therefore, it is necessary to use a set of high-pass matching circuits to simultaneously debug the resonance of these three frequency bands.

[0059] like Figure 5 and Figure 6 As shown in the figure, the resonance diagram shows that GPS L5 has a deeper resonance, while GPS L1 and LTE Band 32 share a resonance (they have similar frequencies). The Smith chart shows that all three frequency bands are relatively close to the center of the Smith chart. From the perspective of antenna energy, the first radiator 110, feed structure 140, and first ground point 112 form the IFA antenna, which primarily radiates energy from GPS L1, GPS L5, and LTE Band 32.

[0060] like Figure 5 and Figure 6 As shown, starting from the feeding structure 140, after passing through the high-pass matching circuit, the resonance of Wi-Fi 5G is Figure 3 The resonances from 6 to 7 shown in .4 are relatively shallow; the resonance of Wi-Fi 6E is Figure 3 The resonances between 8 and 9 shown in Figure 4 are quite deep. Therefore, a low-pass matching circuit is required to tune the resonances of Wi-Fi 5G and Wi-Fi 6E to balance the resonance depths of the two frequency bands.

[0061] like Figure 4 and Figure 5As shown, starting from the antenna port 131, a set of high-pass circuits are first added (first a 1.8pF capacitor is connected in series, and then a 3.5nH inductor is connected in parallel), and then a set of low-pass circuits are added (then a 0.3pF capacitor is connected in parallel, and then a 1nH inductor is connected in series), and the corresponding resonance diagram is shown. As can be seen from the resonance diagram, the resonance depth of Wi-Fi 5G has been improved, all below -4dB, and the resonance of Wi-Fi 6E is deeper. In addition, after adding the low-pass matching circuit, the four resonances below 3GHz, namely GPS L5, GPS L1, LTE Band32 and Wi-Fi 2.4G, are basically not affected. From the perspective of antenna energy, the first radiator 110, the feed structure 140, and the first ground point 112 constitute an IFA antenna, which can also radiate the energy of Wi-Fi 5G and Wi-Fi 6E.

[0062] The embodiment of the present application also proposes an electronic device, including an antenna assembly. The antenna assembly adopts part or all of the technical solutions of the aforementioned embodiment, and thus has part or all of the technical advantages of the aforementioned embodiment. In the embodiment, the first radiator and the second radiator can be used as metal frames of the electronic device. The clearance of the first radiator is 3.5 mm, and the clearance of the second radiator is 2.6 mm. This antenna solution uses metal frame radiation, which can eliminate the need for LDS (Laser Direct Structuring) antennas and FPC (Flexible Printed Circuit) antennas, thereby reducing the overall cost of the electronic device.

[0063] The electronic device proposed in the embodiment of the present application can be an electronic device with communication functions, such as mobile phones, IPADs and other devices. The electronic device can debug the six frequency bands of GPS L5, LTE Band32, GPS L1, Wi-Fi 2.4G, Wi-Fi 5G and Wi-Fi 6E; for example, the electronic device is a 5G mobile phone, and the 5G mobile phone can overcome the isolation problem caused by many connected antennas. Among the beneficial effects brought to the end user, after the mobile phone is connected to the Wi-Fi access network, the file upload rate is faster, and the online viewing of high-definition videos is smooth and not stuck. At the same time, the mobile phone can quickly and accurately locate, and has a better user experience.

[0064] The above description is merely an optional embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the contents of the present application specification and drawings under the application concept of the present application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. An antenna assembly, characterized in that: include: a first radiator and a second radiator, wherein a first slot is provided between the first radiator and the second radiator; and the first radiator and the second radiator are grounded; An antenna matching circuit, the antenna matching circuit comprising an antenna port, a first capacitor, a first inductor, a second inductor, a second capacitor, and a radio frequency port; the antenna port is connected in series with the first capacitor, and the first capacitor is connected in parallel with the first inductor; the first capacitor, the second inductor, and the radio frequency port are connected in series, and the second capacitor is connected in parallel with the second inductor; the antenna port is connected to the first radiator; as well as A feeding structure is connected to the radio frequency port.

2. The antenna assembly according to claim 1, wherein: The first capacitance is 1.6-2.0 pF, the first inductance is 3.3-3.7 nH, the second inductance is 0.8-1.2 nH, and the second capacitance is 0.2-0.4 pF.

3. The antenna assembly according to claim 2, wherein: The first capacitance is 1.8 pF, the first inductance is 3.5 nH, the second inductance is 1 nH, and the second capacitance is 0.3 pF.

4. The antenna assembly according to any one of claims 1 to 3, wherein: The first inductor and the second capacitor are grounded.

5. The antenna assembly according to claim 1, wherein: The first radiator has a first end away from the second radiator and an electrical connection structure connected to the antenna port; The horizontal distance between the electrical connection structure and the first end is L1; the value of L1 is 20-25mm; The vertical distance between the electrical connection structure and the first end is L2; ​​the value of L2 is 18-22 mm; The distance between the electrical connection structure and the first grounding point of the first radiator is L3; The value of L3 is 5-7mm.

6. The antenna assembly according to claim 5, wherein: The value of L1 is 22.5mm, the value of L2 is 20.5mm, and the value of L3 is 6mm.

7. The antenna assembly according to claim 5, wherein: The first radiator has a horizontal section and a vertical section; the horizontal section is connected to an end of the vertical section away from the second radiator; The distance between the first grounding point and the horizontal section is L4; the value of L4 is 10-15 mm.

8. The antenna assembly according to claim 1, wherein: The width of the first groove is L5; the value of L5 is 1.2-1.6 mm.

9. The antenna assembly according to claim 1, wherein: The first grounding point of the first radiator and the second grounding point of the second radiator are distributed on both sides of the first slot, and the vertical distance between them is L6; the value of L6 is 18-21 mm.

10. An electronic device, characterized in that: An antenna assembly comprising the antenna assembly according to any one of claims 1 to 9.

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