Antenna structure and terminal equipment

Abstract

The utility model discloses an antenna structure and terminal equipment. The antenna structure comprises a first metal frame section, a second metal frame section and a third metal frame section, the first metal frame section is provided with a first grounding point; the first metal frame section is used for radiating a first radio frequency signal, a second radio frequency signal and a third radio frequency signal; one end of the second metal frame section is spaced from the first metal frame section through the first slot, and the second metal frame section is provided with a second grounding point; the second metal frame section is used for radiating a fourth radio frequency signal; one end of the third metal frame section is spaced from the first metal frame section through a second slot, and the third metal frame section is provided with a third grounding point; the third metal frame section and the first metal frame section are used for radiating a fifth radio frequency signal and a sixth radio frequency signal; wherein the frequency ranges of the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal and the sixth radio frequency signal are different; the cost can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of communication technology, and in particular to an antenna structure and terminal equipment. Background Technology

[0002] Nowadays, 5G (the 5th Generation) mobile phones have a lot of connectivity features, such as GPS (Global Positioning System) and Wi-Fi. GPS can be divided into GPS L1 (Level 1) and GPS L5 (Level 5), and Wi-Fi is subdivided into Wi-Fi 2.4G, Wi-Fi 5G and Wi-Fi 6E, and usually appears in the form of Wi-Fi MIMO (Multiple Input Multiple Output). For mobile phone antenna design, multiple antennas need to support the five communication frequency bands for GPS L1, GPS L5, Wi-Fi 2.4G, Wi-Fi 5G, and Wi-Fi 6E, and Wi-Fi MIMO needs to be considered. In addition, Wi-Fi 2.4G is close to high-frequency frequencies (2.3GHz~2.69GHz), which can easily lead to poor antenna isolation, especially for two antennas in adjacent frequency bands. This reduces antenna efficiency, affects the active performance of the antenna, and reduces the uplink and downlink speeds of the mobile phone, thus affecting the speed of file uploads and the smoothness of online video streaming.

[0003] To address the issue of poor isolation caused by numerous connecting antennas in 5G phones, the industry's solution is to adopt a multi-band integrated antenna solution. That is, one antenna integrates the three frequency bands of Wi-Fi 2.4G, Wi-Fi 5G, and GPS L1, and another antenna integrates the three frequency bands of Wi-Fi 2.4G, Wi-Fi 5G, and GPS L5. The current antenna integration level is three frequency bands, which is still not high enough. If a single antenna integrates six frequency bands—GPS L1, GPS L5, Wi-Fi 2.4G, Wi-Fi 5G, Wi-Fi 6E, and LTE (Long Term Evolution) Band32—but cannot support all six bands simultaneously, additional antenna switch hardware is needed to dynamically switch between them. Specifically, when the antenna switch is switched to state one, a single antenna simultaneously supports four bands: GPS L1, LTE Band32, Wi-Fi 2.4G, and Wi-Fi 5G; when switched to state two, it supports three bands: GPS L5, Wi-Fi 2.4G, and Wi-Fi 5G; and when switched to state three, it supports three bands: Wi-Fi 2.4G, Wi-Fi 5G, and Wi-Fi 6E. The advantage of this approach is that it can dynamically cover six frequency bands using an antenna switch. However, it requires additional antenna switch hardware and corresponding capacitors and inductors, increasing costs.

[0004] Therefore, the current technology needs further improvement. Utility Model Content

[0005] The purpose of this invention is to provide an antenna structure and terminal device that can alleviate the problem of increased costs due to antenna design in current terminal devices.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This application provides an antenna structure, including:

[0008] A first metal frame segment, in which a first grounding point is provided; the first metal frame segment is used to radiate a first radio frequency signal, a second radio frequency signal and a third radio frequency signal.

[0009] The second metal frame segment has one end separated from one end of the first metal frame segment by the first slot, and the other end of the second metal frame segment is provided with a second grounding point; the second metal frame segment is used to radiate the fourth radio frequency signal.

[0010] The third metal frame segment has one end separated from the other end of the first metal frame segment by a second slot, and the other end of the third metal frame segment is provided with a third grounding point; the third metal frame segment and the first metal frame segment are used to radiate the fifth radio frequency signal and the sixth radio frequency signal.

[0011] The frequency ranges of the first, second, third, fourth, fifth, and sixth radio frequency signals are different.

[0012] In some embodiments of the antenna structure, a metal spring is provided at the other end of the first metal frame segment near the second slot, and the antenna feed point is connected through the metal spring.

[0013] In some embodiments of the antenna structure, the first ground point, the antenna feed point, and the first metal frame segment form an inverted F-shaped antenna.

[0014] In some embodiments of the antenna structure, the second metal frame segment and the third metal frame segment are both straight, and the second metal frame segment and the third metal frame segment are located in two different directions.

[0015] In some embodiments of the antenna structure, the antenna structure further includes a matching circuit; the feed point is connected to the first metal frame segment via the matching circuit and a metal spring.

[0016] In some embodiments of the antenna structure, the matching circuit includes a first capacitor, one end of which is electrically connected to a metal spring, and the other end of which is electrically connected to the antenna feed point.

[0017] In some embodiments of the antenna structure, the matching circuit includes a first capacitor and a first inductor. One end of the first capacitor is electrically connected to a metal spring, and the other end of the first capacitor is connected to one end of the first inductor, with the other end of the first inductor grounded.

[0018] In some embodiments of the antenna structure, the matching circuit includes a first capacitor, a first inductor, and a second capacitor. One end of the first capacitor is electrically connected to a metal spring, and the other end of the first capacitor is connected to one end of the second capacitor and one end of the first inductor. The other end of the second capacitor is electrically connected to the feed point, and the other end of the first inductor is grounded.

[0019] In some embodiments of the antenna structure, the frequency of the first radio frequency signal is 1575MHz; the frequency range of the second radio frequency signal is 1176MHz; the frequency range of the third radio frequency signal is 1452MHz to 1496MHz; the frequency range of the fourth radio frequency signal is 2400MHz to 2500MHz; the frequency range of the fifth radio frequency signal is 5150MHz to 5850MHz; and the frequency range of the sixth radio frequency signal is 5925MHz to 7125MHz.

[0020] This application also provides a terminal device including the antenna structure described above.

[0021] Compared to existing technologies, this application provides an antenna structure and terminal device. In this antenna structure, a first metal frame segment radiates a first, second, and third radio frequency (RF) signal; a second metal frame segment radiates a fourth RF signal; and the third and first metal frame segments radiate a fifth and a sixth RF signal. The frequency ranges of the first, second, third, fourth, fifth, and sixth RF signals are different. This application integrates six frequency bands in a single antenna, achieving a high degree of frequency band integration. Furthermore, it eliminates the need for antenna switches and other hardware, effectively saving costs compared to using multiple antennas to support multiple frequency bands. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the first possible antenna structure provided in this application.

[0023] Figure 2 This is a schematic diagram showing the dimensions of the antenna structure provided in this application.

[0024] Figure 3 This is a schematic diagram of a second antenna structure provided in this application.

[0025] Figure 4 The image shows the resonant waveform of the antenna structure provided in this application when no matching circuit is provided.

[0026] Figure 5 The Smith chart shows the antenna structure provided in this application without a matching circuit.

[0027] Figure 6 The first circuit structure of the matching circuit provided in the antenna structure of this application.

[0028] Figure 7 The resonance waveform diagram of the antenna structure provided in this application when the first matching circuit is set.

[0029] Figure 8 The Smith chart of the antenna structure provided in this application with the first matching circuit configured.

[0030] Figure 9 The second circuit diagram of the matching circuit in the antenna structure provided in this application.

[0031] Figure 10 The resonance waveform diagram of the antenna structure provided in this application when the second matching circuit is set.

[0032] Figure 11 Smith chart of the antenna structure provided in this application with the second matching circuit.

[0033] Figure 12 The third circuit structure diagram of the matching circuit in the antenna structure provided in this application.

[0034] Figure 13 The resonance waveform diagram of the antenna structure provided in this application when a third matching circuit is set.

[0035] Figure 14 Smith chart of the antenna structure provided in this application with a third matching circuit.

[0036] Figure 15 The fourth circuit diagram of the matching circuit in the antenna structure provided in this application.

[0037] Figure 16 The resonance waveform diagram of the antenna structure provided in this application when the fourth matching circuit is set.

[0038] Figure 17 The free-space passive efficiency test structure curve of the antenna structure provided in this application is shown.

[0039] Icon labels:

[0040] 101. First metal frame segment; 102. Second metal frame segment; 103. Third metal frame segment; 104. First slot; 105. Second slot; 106. Metal spring; 201. Matching circuit; A. First grounding point; B. Second grounding point; C. Third grounding point; N. Antenna feed point; 301. Metal middle frame. Detailed Implementation

[0041] The purpose of this invention is to provide an antenna structure and terminal device that can alleviate the problem of increased costs due to antenna design in current terminal devices.

[0042] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0043] Please see Figure 1 , Figure 1This application also provides an antenna structure comprising a first metal frame segment 101, a second metal frame segment 102, and a third metal frame segment 103; wherein, a first grounding point A is provided in the first metal frame segment 101; one end of the second metal frame segment 102 is spaced apart from one end of the first metal frame segment 101 by a first slot 104, and the other end of the second metal frame segment 102 is provided with a second grounding point B; one end of the third metal frame segment 103 is spaced apart from the other end of the first metal frame segment 101 by a second slot 105, and the other end of the third metal frame segment 103 is provided with a third grounding point C.

[0044] The first metal frame segment 101 radiates a first, second, and third radio frequency (RF) signal; the second metal frame segment 102 radiates a fourth RF signal; and the third metal frame segment 103 and the first metal frame segment 101 together radiate a fifth and a sixth RF signal. The frequency ranges of the first, second, third, fourth, fifth, and sixth RF signals are different. In this application, a single antenna formed by the metal frame integrates six frequency bands, achieving a high degree of frequency band integration. Furthermore, it eliminates the need for hardware such as antenna switches, effectively saving costs compared to using multiple antennas to support multiple frequency bands.

[0045] In one embodiment, the first radio frequency signal corresponds to the GPS L1 band, the second radio frequency signal corresponds to the GPS L5 band, the third radio frequency signal corresponds to the LTE Band32 band, the fourth radio frequency signal corresponds to the Wi-Fi 2.4G band, the fifth radio frequency signal corresponds to the Wi-Fi 5G band, and the sixth radio frequency signal corresponds to the Wi-Fi 6E band. Specifically, the frequency of the first radio frequency signal is 1575MHz; the frequency range of the second radio frequency signal is 1176MHz; the frequency range of the third radio frequency signal is 1452MHz~1496MHz; the frequency range of the fourth radio frequency signal is 2400MHz~2500MHz; the frequency range of the fifth radio frequency signal is 5150MHz~5850MHz; and the frequency range of the sixth radio frequency signal is 5925MHz~7125MHz. The antenna structure in this embodiment can simultaneously support six frequency bands: GPS L1, GPS L5, LTE Band32, Wi-Fi 2.4G, Wi-Fi 6E, and Wi-Fi 5G, achieving a high degree of frequency band integration. Furthermore, it eliminates the need for additional switches and corresponding capacitors, inductors, and other hardware, thus reducing costs.

[0046] In some embodiments, a metal spring 106 is provided at the other end of the first metal frame segment 101 near the second slot 105, and the antenna feed point N is connected through the metal spring 106. The first ground point A, the antenna feed point N, and the first metal frame segment 101 form an inverted F-shaped antenna, which can be tuned to achieve resonance of GPS L1, GPS L5, and LTE Band 32. The second metal frame segment 102 and the third metal frame segment 103 are both straight, and the second metal frame segment 102 and the third metal frame segment 103 are located in two different directions. That is, when the antenna structure of this embodiment is applied to a terminal device, the first metal frame segment 101 is located in the upper left corner area of ​​the terminal device, the second metal frame segment 102 is located below the first metal frame segment 101, and the third metal frame segment 103 is located to the right of the first metal frame segment 101, and the second metal frame segment 102 and the third metal frame segment 103 are located in two different directions.

[0047] In this embodiment, the metal spring 106 of the first metal frame segment is disposed on the side close to the third metal frame segment 103. The metal spring 106 is located on the top of the terminal device and not in the arc corner area of ​​the terminal device. This means that the metal spring 106 is not easy to fall off when the terminal device is dropped.

[0048] The second metal frame segment 102 forms a parasitic antenna relative to the antenna feed point of the first metal frame segment 101, thereby enabling the resonance of Wi-Fi 2.4G to be tuned; the third metal frame segment 103 forms a parasitic antenna relative to the antenna feed point N of the first metal frame segment 101, thereby enabling the resonance of Wi-Fi 5G and Wi-Fi 6E to be tuned.

[0049] Please see Figure 2 , Figure 2 This is a schematic diagram showing the dimensions of the antenna structure provided in this application. As one embodiment, the overall dimensions of the antenna structure in this embodiment are 29mm * 28.5mm; other dimensions of the antenna structure are shown in Table 1.

[0050] parameter Size / mm parameter Size / mm parameter Size / mm parameter Size / mm L0 37.6 L1 18.3 L2 17.8 L3 1.5 L4 2.1 L5 2.5 W0 25.7 W1 22.2 W2 11.9 W3 10.3 W4 1.5 W5 2.0 W6 2.5 W7 2.0 W8 2.9

[0051] Table 1

[0052] Please see Figure 3In some embodiments, the antenna structure further includes a matching circuit 201; the antenna feed point N is connected to the first metal frame segment 101 via the matching circuit 201 and a metal spring 106; in this embodiment, the antenna structure starts from the antenna feed point N, passes through the antenna matching circuit, and is then connected to the first metal frame segment 101 via the metal spring 106. The lower end of the first metal frame segment 101 corresponds to the first slot, and the right end of the first metal frame segment 101 corresponds to the second slot. The first metal frame segment 101 is connected to the metal middle frame 301 (the metal middle frame 301 can be understood as ground GND) via the first grounding point A. The width of the first grounding point A can be 2.5mm. The first metal frame segment 101, the antenna feed point N, and the first grounding point A constitute an inverted F-shaped antenna. The distance between the antenna feed point and ground (GND) is 10.3mm. The horizontal and vertical distances between the antenna feed point N and the end of the inverted F-shaped antenna can be 22.2mm and 18.3mm, respectively.

[0053] Please see Figure 4 and Figure 5 , Figure 4 This is the resonant waveform diagram when the matching circuit 201 is not provided in the antenna structure in this embodiment. Figure 5 This is the Smith chart for the antenna structure in this embodiment without the matching circuit 201. In the chart, M1 corresponds to the GPS L5 frequency, M2 corresponds to the starting frequency of LTE Band 32 (this band has a narrow bandwidth of 44MHz, and the starting frequency represents the entire frequency range), M3 corresponds to the GPS L1 frequency, M4 to M5 correspond to the Wi-Fi 2.4G frequency range, M6 to M7 correspond to the Wi-Fi 5G frequency range, and M8 to M9 correspond to the Wi-Fi 6E frequency range. Without the matching circuit, the resonance diagram shows that before the 2GHz frequency point, the inverted-F antenna has an initial resonance around 1.5GHz; the Smith chart shows that GPS L1, GPS L5, and LTE Band 32 are relatively clustered in the first quadrant, but none are close to the center of the Smith chart.

[0054] Please see Figure 6 In some embodiments, the antenna matching circuit 201 includes a first capacitor C1, one end of which is electrically connected to the metal spring 106, and the other end of which is electrically connected to the antenna feed point N. In this embodiment, starting from the metal spring 106, a first capacitor C1 is connected in series, and the capacitance value of the first capacitor C1 can be 1.1pF. At this time, the resonance waveform corresponding to the antenna structure is as follows. Figure 7 As shown, the Smith chart corresponding to the antenna structure is as follows: Figure 8As shown; it can be seen from the resonance diagram that the resonance of the inverted F antenna near 1.5GHz is split into two resonances; it can be seen from the Smith chart that the three frequency bands have moved from the first quadrant to the position between the third and fourth quadrants, the GPS L5 frequency point is at the edge of the Smith chart, and the GPS L1 and LTE Band32 are close to the center of the Smith chart.

[0055] Please see Figure 9 In some embodiments, the antenna matching circuit 201 includes a first capacitor C1 and a first inductor L1, which are connected in parallel. In this embodiment, starting from the metal spring 106, the first capacitor C1 is connected in series first, and then the first inductor L1 is connected in parallel to ground. The capacitance of the first capacitor C1 is 1.1 pF, and the inductance of the first inductor L1 is 5 nH. The corresponding resonance waveform of the antenna structure is shown below. Figure 10 As shown, the Smith chart corresponding to the antenna structure is as follows: Figure 11 As shown in the diagram, the two resonances below 2GHz are further separated. GPS L5 and LTE Band32 do not resonate, while GPS L1 resonates more deeply. The Smith chart shows that GPS L5 is located in the first quadrant, while GPS L1 and LTE Band32 are located between the first and second quadrants. GPS L1 is close to the center of the Smith chart, while GPS L5 and LTE Band32 are not close to the center of the Smith chart.

[0056] Please see Figure 12 In some embodiments, the matching circuit 201 includes a first capacitor C1, a first inductor L1, and a second capacitor C2. One end of the first capacitor C1 is electrically connected to the metal spring 106, and the other end of the first capacitor C1 is connected to one end of the second capacitor C2 and one end of the first inductor L1. The other end of the second capacitor C2 is electrically connected to the antenna feed point N, and the other end of the first inductor L1 is grounded. In this embodiment, starting from the metal spring 106, the first capacitor C1 is connected in series first, then the first inductor L1 is connected in parallel, and then the second capacitor C2 is connected in series, thus forming a high-pass matching circuit 201. The capacitance of the first capacitor C1 is 1.1 pF, the inductance of the first inductor L1 is 5 nH, and the capacitance of the second capacitor C2 is 1.6 pF. At this time, the resonant waveform corresponding to the antenna structure is as follows: Figure 13 As shown, the Smith chart corresponding to the antenna structure is as follows: Figure 14As shown in the diagram, the resonance of GPS L5 reaches below -5dB, while LTE Band32 and GPS L1 have similar frequencies, sharing a relatively deep resonance. The Smith chart shows that the three frequency bands—GPS L1, GPS L5, and LTE Band32—are all relatively close to the center of the Smith chart. From the perspective of antenna energy, the inverted-F type antenna formed by the first metal frame segment 101, the antenna feed point N, and the first ground point A mainly radiates the energy of GPS L1, GPS L5, and LTE Band32.

[0057] Please continue reading. Figure 13 The second metal frame segment 102 forms a parasitic antenna, thereby tuning the resonance of Wi-Fi 2.4G, such as... Figure 13 The resonance of M4 to M5 in the diagram; from the perspective of antenna energy, the parasitic antenna composed of the second metal frame segment 102 mainly radiates the energy of Wi-Fi 2.4G.

[0058] In some embodiments, the third metal frame segment 103 is connected to the metal mid-frame 301 via a third grounding point C, and one end of the third metal frame segment 103 is a second slot. Relative to the antenna feed point of the first metal frame 101, the third metal frame segment 103 constitutes a parasitic antenna (also called a coupled antenna), thereby tuning the resonance of Wi-Fi 5G and Wi-Fi 6E. Starting from the antenna feed point N, after passing through the high-pass matching circuit, the resonance of Wi-Fi 5G is... Figure 13 The resonances of M6 and M7 shown are relatively shallow; the resonance of Wi-Fi 6E is... Figure 13 The resonances marked M8 to M9 shown are quite deep. Therefore, a low-pass matching circuit is needed to tune the resonances of Wi-Fi 5G and Wi-Fi 6E to balance the resonance depth of these two frequency bands.

[0059] Please see Figure 15 The matching circuit 201 includes a first capacitor C1, a first inductor L1, a second capacitor C2, and a second inductor L2. One end of the first capacitor C1 is electrically connected to the metal spring 106. The other end of the first capacitor C1 is connected to one end of the second capacitor C2 and one end of the first inductor L1. The other end of the second capacitor C2 is connected to one end of the second inductor L2. The other end of the second inductor L2 is electrically connected to the antenna feed point N, and the other end of the second inductor is grounded. In this embodiment, the matching circuit 201 is based on a high-pass circuit with an additional low-pass circuit (i.e., the second inductor L2 is connected in series). The inductance value of the second inductor L2 is 0.3nH.

[0060] At this time, the resonant waveform diagram corresponding to the antenna structure is as follows: Figure 16As shown in the resonance waveform diagram, the resonance depth of Wi-Fi 5G is improved, all below -5dB, while the resonance of Wi-Fi 6E is relatively deep. Furthermore, the addition of the low-pass matching circuit essentially does not affect the resonances of GPS L5, GPS L1, LTE Band32, and Wi-Fi 2.4G (below 3GHz). From the perspective of antenna energy, the IFA antenna, composed of the first metal frame segment 101, the antenna feed point N, and the first ground point A, and the parasitic antenna composed of the third metal frame 103, primarily radiates the energy of Wi-Fi 5G and Wi-Fi 6E.

[0061] Antenna performance can be measured by its passive efficiency in free space. For example... Figure 17 The diagram shows the free-space passive efficiency test curves of the antenna structure provided in this application; the average passive efficiencies in free space for the six frequency bands—GPS L5, LTE Band32, GPS L1, Wi-Fi 2.4G, Wi-Fi 5G, and Wi-Fi 6E—are -5.4dB, -2.8dB, -3.7dB, -3.4dB, -2.7dB, and -2.9dB, respectively. Figure 17 As shown, the antennas cover six frequency points or ranges: 1176MHz, 1452MHz~1496MHz, 1575MHz, 2400MHz~2500MHz, 5150MHz~5850MHz, and 5925MHz~7125MHz. The passive efficiency of all six bands is better than -5.5dB, indicating good antenna performance.

[0062] This application also provides a terminal device that integrates the aforementioned antenna structure. Since the antenna structure has been described in detail above, it will not be repeated here. The terminal device can be a 5G smartphone, tablet, rugged phone, or scanning device, or other communication equipment.

[0063] The terminal device in this application integrates the aforementioned antenna structure in the upper left corner of the back panel. The antenna size is 37.6mm × 25.7mm, with corresponding top antenna clearance of 3.5mm and side antenna clearance of 2.6mm. Employing in-mold injection molding, a single antenna integrates six frequency bands: GPS L5, LTE Band32, GPS L1, Wi-Fi 2.4G, Wi-Fi 5G, and Wi-Fi 6E. The passive efficiencies in free space are -5.4dB, -2.8dB, -3.7dB, -3.4dB, -2.7dB, and -2.9dB, respectively. This high level of frequency band integration results in good antenna performance. This integrated antenna solution effectively alleviates the problem of poor isolation caused by numerous connectivity antennas in 5G mobile phones and reduces coupling between adjacent antennas in the same frequency band. This antenna solution offers several benefits to mobile phone users: faster and more accurate GPS navigation, and smooth, high-definition video streaming without buffering when watching online videos via Wi-Fi, resulting in a superior user experience. Furthermore, the metal frame design eliminates the need for LDS (Laser Direct Structuring) and FPC (Flexible Printed Circuit) antennas, further reducing the cost of the terminal.

[0064] The antenna structure provided in the embodiments of this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An antenna structure, characterized in that, include: A first metal frame segment, wherein a first grounding point is provided in the first metal frame segment; The first metal frame segment is used to radiate a first radio frequency signal, a second radio frequency signal, and a third radio frequency signal; The second metal frame segment has one end separated from one end of the first metal frame segment by a first slot, and the other end of the second metal frame segment is provided with a second grounding point; the second metal frame segment is used to radiate a fourth radio frequency signal. The third metal frame segment has one end separated from the other end of the first metal frame segment by a second slot, and the other end of the third metal frame segment is provided with a third grounding point; the third metal frame segment and the first metal frame segment are used to radiate the fifth radio frequency signal and the sixth radio frequency signal. The frequency ranges of the first radio frequency signal, the second radio frequency signal, the third radio frequency signal, the fourth radio frequency signal, the fifth radio frequency signal, and the sixth radio frequency signal are different.

2. The antenna structure according to claim 1, characterized in that, A metal spring is provided at the other end of the first metal frame segment near the second slot, and the antenna feed point is connected through the metal spring.

3. The antenna structure according to claim 2, characterized in that, The first grounding point, the antenna feed point, and the first metal frame segment form an inverted F-shaped antenna.

4. The antenna structure according to claim 2, characterized in that, Both the second metal frame segment and the third metal frame segment are straight lines, and the second metal frame segment and the third metal frame segment are located in two different directions.

5. The antenna structure according to claim 3, characterized in that, The antenna structure also includes a matching circuit; the feed point is connected to the first metal frame segment via the matching circuit and the metal spring.

6. The antenna structure according to claim 5, characterized in that, The matching circuit includes a first capacitor, one end of which is electrically connected to the metal spring, and the other end of which is electrically connected to the antenna feed point.

7. The antenna structure according to claim 5, characterized in that, The matching circuit includes a first capacitor and a first inductor. One end of the first capacitor is electrically connected to the metal spring, and the other end of the first capacitor is connected to one end of the first inductor. The other end of the first inductor is grounded.

8. The antenna structure according to claim 5, characterized in that, The matching circuit includes a first capacitor, a first inductor, and a second capacitor. One end of the first capacitor is electrically connected to the metal spring, and the other end of the first capacitor is connected to one end of the second capacitor and one end of the first inductor. The other end of the second capacitor is electrically connected to the feed point, and the other end of the first inductor is grounded.

9. The antenna structure according to claim 6, characterized in that, The first radio frequency signal has a frequency of 1575MHz; the second radio frequency signal has a frequency range of 1176MHz; the third radio frequency signal has a frequency range of 1452MHz~1496MHz; the fourth radio frequency signal has a frequency range of 2400MHz~2500MHz; the fifth radio frequency signal has a frequency range of 5150MHz~5850MHz; and the sixth radio frequency signal has a frequency range of 5925MHz~7125MHz.

10. A terminal device, characterized in that, Including the antenna structure as described in any one of claims 1-9.

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