Antenna device and mobile terminal

Abstract

An embodiment of the present application provides a mobile terminal antenna architecture and a mobile terminal. The mobile terminal antenna architecture is applied to a mobile terminal, the mobile terminal antenna architecture including a metal frame segment of the mobile terminal and a metal frame antenna designed based on the metal frame segment; the metal frame antenna including a first metal frame antenna, a second metal frame antenna, a third metal frame antenna, a fourth metal frame antenna, a fifth metal frame antenna, a sixth metal frame antenna, a seventh metal frame antenna, an eighth metal frame antenna, and a ninth metal frame antenna; the frame of the mobile terminal includes an upper frame located at the upper part of the mobile terminal and a lower frame located at the lower part of the mobile terminal, the first metal frame antenna, the second metal frame antenna, and the third metal frame antenna are located on the lower frame, and the fourth metal frame antenna, the fifth metal frame antenna, the sixth metal frame antenna, the seventh metal frame antenna, the eighth metal frame antenna, and the ninth metal frame antenna are located on the upper frame.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a mobile terminal antenna architecture and a mobile terminal. Background Art

[0002] In recent years, with the rapid development of mobile communication industry, 5G th The shipment of fifth generation wireless communication technology) mobile phones has been increasing year by year and has become more and more popular. th 5G phones use LTE (Long Term Evolution) technology, the fourth generation of wireless communication technology. 5G phones have the advantages of fast upload and download speeds, low communication latency, and large cell capacity. Designing antennas for 5G phones is more difficult than for 4G phones, mainly because the number of antennas in 5G phones has greatly increased. This can be described as: the number of medium-frequency antennas has increased from two to four, the number of high-frequency antennas has increased from two to four, the number of GPS (Global Positioning System) antennas has increased from one to two, the number of Wi-Fi antennas has increased from one to two, and four new ultra-high-frequency antennas have been added. However, the number of low-frequency antennas (two) remains unchanged.

[0003] For 5G mobile phones currently on the market, the performance of the first and second antennas of the medium frequency is better, the performance of the third and fourth antennas is average, and the performance of the high frequency and ultra-high frequency antennas is similar to that of the medium frequency. In other words, the performance of the third and fourth antennas of the medium frequency, high frequency and ultra-high frequency are sacrificed to a certain extent.

[0004] Therefore, the existing technology has defects and needs to be improved and developed. Summary of the Invention

[0005] The embodiments of the present application provide a mobile terminal antenna architecture and a mobile terminal, which can improve the free space efficiency and head-to-hand performance of the antenna.

[0006] An embodiment of the present application provides a mobile terminal antenna architecture, which is applied to a mobile terminal and includes a metal frame segment of the mobile terminal and a metal frame antenna designed based on the metal frame segment;

[0007] The metal frame antenna includes a first metal frame antenna, a second metal frame antenna, a third metal frame antenna, a fourth metal frame antenna, a fifth metal frame antenna, a sixth metal frame antenna, a seventh metal frame antenna, an eighth metal frame antenna and a ninth metal frame antenna;

[0008] The frame of the mobile terminal includes an upper frame located at the upper part of the mobile terminal and a lower frame located at the lower part of the mobile terminal, the first metal frame antenna, the second metal frame antenna and the third metal frame antenna are located on the lower frame, the first metal frame antenna has the functions of a low-frequency diversity antenna and a high-frequency MIMO diversity antenna, the second metal frame antenna has the functions of a medium-frequency MIMO main antenna and a high-frequency MIMO main antenna, and the third metal frame antenna has the functions of a medium-frequency diversity antenna, a high-frequency diversity antenna and an ultra-high-frequency diversity antenna;

[0009] The fourth metal frame antenna, the fifth metal frame antenna, the sixth metal frame antenna, the seventh metal frame antenna, the eighth metal frame antenna and the ninth metal frame antenna are located on the upper frame. The fourth metal frame antenna has the functions of a high-frequency main antenna and an ultra-high-frequency main antenna. The fifth metal frame antenna has the functions of a GPS L1 antenna, a GPSL5 antenna, a Wi-Fi 2.4G antenna and a Wi-Fi 5G antenna. The sixth metal frame antenna has the functions of a Wi-Fi 2.4G antenna and a Wi-Fi 5G antenna. The seventh metal frame antenna has the functions of a low-frequency main antenna and a medium-frequency MIMO diversity antenna. The eighth metal frame antenna has the function of an ultra-high-frequency MIMO main antenna. The ninth metal frame antenna has the functions of a medium-frequency main antenna and an ultra-high-frequency MIMO diversity antenna.

[0010] In the mobile terminal antenna architecture described in this embodiment, the lower frame includes a bottom edge, a first side edge and a second side edge, one end of the bottom edge is fixedly connected to the first end of the first side edge, and the other end of the bottom edge is fixedly connected to the first end of the second side edge, the first metal frame antenna is located on the bottom edge and the first side edge, the second metal frame antenna is located on the bottom edge, and the third metal frame antenna is located on the second side edge.

[0011] In the mobile terminal antenna architecture described in this embodiment, the upper frame includes a top edge, a third side edge and a fourth side edge, one end of the top edge is fixedly connected to the first end of the third side edge, the other end of the top edge is fixedly connected to the first end of the fourth side edge, the second end of the third side edge is fixedly connected to the second end of the first side edge, and the second end of the fourth side edge is fixedly connected to the second end of the fourth side edge. The fourth metal frame antenna is located on the third side edge, the fifth metal frame antenna is located on the third side edge and the top edge, the sixth metal frame antenna is located on the top edge, the seventh metal frame antenna is located on the top edge and the fourth side edge, the eighth metal frame antenna is located on the fourth side edge, and the ninth metal frame antenna is located on the fourth side edge, wherein the sixth metal frame antenna is located between the fifth metal frame antenna and the seventh metal frame antenna, and the eighth metal frame antenna is located between the seventh metal frame antenna and the ninth metal frame antenna.

[0012] In the mobile terminal antenna architecture described in this embodiment, the first metal frame antenna is connected to the antenna switch on the mobile terminal PCB board, and the antenna switch is used to switch the low frequency band of the first metal frame antenna.

[0013] In the mobile terminal antenna architecture described in this embodiment, the second metal frame antenna is grounded, and the distance between the grounding point on the second metal frame antenna and the feeding point on the second metal frame antenna ranges from 11 mm to 13 mm.

[0014] In the mobile terminal antenna architecture described in this embodiment, the third metal frame antenna includes a first sub-metal frame antenna, a second sub-metal frame antenna and a third sub-metal frame antenna, a second plastic frame is arranged between the first sub-metal frame antenna and the second sub-metal frame antenna, a third plastic frame is arranged between the first sub-metal frame antenna and the third sub-metal frame antenna, the first sub-metal frame antenna is a parasitic antenna, and the second sub-metal frame antenna and the third sub-metal frame antenna are grounded respectively.

[0015] In the mobile terminal antenna architecture described in this embodiment, the fourth metal frame antenna includes a fourth sub-metal frame antenna and a fifth sub-metal frame antenna, a fourth plastic frame is arranged between the fourth sub-metal frame antenna and the fifth sub-metal frame antenna, the fourth sub-metal frame antenna is a parasitic antenna, and the fourth sub-metal frame antenna and the fifth sub-metal frame antenna are grounded respectively.

[0016] In the mobile terminal antenna architecture described in this embodiment, the fifth metal frame antenna includes a sixth sub-metal frame antenna and a seventh sub-metal frame antenna, a sixth plastic frame is arranged between the sixth sub-metal frame antenna and the seventh sub-metal frame antenna, the sixth sub-metal frame antenna is a parasitic antenna, and the sixth sub-metal frame antenna and the seventh sub-metal frame antenna are grounded respectively.

[0017] In the mobile terminal antenna architecture described in this embodiment, the ninth metal frame antenna includes a tenth sub-metal frame antenna and an eleventh sub-metal frame antenna, a ninth plastic frame is arranged between the tenth sub-metal frame antenna and the eleventh sub-metal frame antenna, the tenth sub-metal frame antenna is a parasitic antenna, and the tenth sub-metal frame antenna and the eleventh sub-metal frame antenna are grounded respectively.

[0018] An embodiment of the present application further provides a mobile terminal, comprising the mobile terminal antenna architecture described in any one of the above embodiments.

[0019] The mobile terminal antenna architecture provided in the embodiment of the present application includes nine metal frame antennas. The first metal frame antenna, the second metal frame antenna, and the third metal frame antenna are located on the lower frame of the mobile terminal and integrate the functions of a low-frequency diversity antenna, a high-frequency MIMO diversity antenna, a medium-frequency MIMO main antenna, a high-frequency MIMO main antenna, a medium-frequency diversity antenna, a high-frequency diversity antenna, and an ultra-high-frequency diversity antenna. The fourth metal frame antenna, the fifth metal frame antenna, the sixth metal frame antenna, the seventh metal frame antenna, the eighth metal frame antenna, and the ninth metal frame antenna are located on the upper frame of the mobile terminal and integrate the functions of a high-frequency main antenna, an ultra-high-frequency main antenna, a GPS L1 antenna, a GPS L5 antenna, a Wi-Fi 2.4G antenna, a Wi-Fi 5G antenna, a low-frequency main antenna, a medium-frequency MIMO diversity antenna, an ultra-high-frequency MIMO main antenna, a medium-frequency main antenna, and an ultra-high-frequency MIMO diversity antenna. The layout of the metal frame antennas and the performance of each antenna greatly improve the free-space efficiency and head-to-hand performance of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0021] Figure 1 A schematic diagram of the structure of a mobile terminal provided in an embodiment of the present application.

[0022] Figure 2A schematic diagram of the structure of the mobile terminal antenna architecture provided in an embodiment of the present application.

[0023] Figure 3 A structural diagram of the mobile terminal antenna architecture located at the bottom of the mobile terminal provided in an embodiment of the present application.

[0024] Figure 4 A structural diagram of a mobile terminal antenna architecture located on top of a mobile terminal provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying 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 one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0028] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0030] The embodiment of the present application provides a mobile terminal. The mobile terminal can be a smart phone, tablet computer or other device. Figure 1 The mobile terminal 100 includes a cover plate 10, a display screen 20, a mobile terminal antenna structure 30, a battery 40, and a back cover 50. The mobile terminal antenna structure 30 and the back cover 50 constitute the housing of the mobile terminal 100.

[0031] The cover plate 10 is mounted on the display screen 20 to cover the display screen 20. The cover plate 10 may be a transparent glass cover plate. For example, the cover plate 10 may be a glass cover plate made of a material such as sapphire.

[0032] The display screen 20 is mounted on the housing to form the display surface of the mobile terminal 100. The display screen 20 may include a display area and a non-display area. The display area is used to display information such as images and text. The non-display area does not display information. Functional components such as a fingerprint module and a touch control circuit may be located at the bottom of the non-display area.

[0033] For example, the display screen 20 can also be a full screen, with only a display area and no non-display area. Among them, functional components such as the fingerprint module and touch circuit are arranged below the full screen. For example, the display screen 20 can also be a special-shaped screen.

[0034] The housing may form an outer contour of the mobile terminal 100. The cover plate 10 may be fixed to the housing, and the cover plate 10 and the housing form a sealed space to accommodate components such as the display screen 20 and the battery 40.

[0035] The battery 40 is installed in a sealed space formed by the cover 10 and the housing, and the battery 40 is electrically connected to the mobile terminal antenna structure 30 to provide power to the mobile terminal 100 .

[0036] The present application also provides a mobile terminal antenna architecture. Figures 2 to 4 The mobile terminal antenna architecture 30 includes a metal frame segment of the mobile terminal and a metal frame antenna designed based on the metal frame segment.

[0037] The metal frame antenna includes a first metal frame antenna A0, a second metal frame antenna A1, a third metal frame antenna A2, a fourth metal frame antenna A3, a fifth metal frame antenna A4, a sixth metal frame antenna A5, a seventh metal frame antenna A6, an eighth metal frame antenna A7 and a ninth metal frame antenna A8.

[0038] The frame of the mobile terminal includes an upper frame located at the upper part of the mobile terminal and a lower frame located at the lower part of the mobile terminal. The first metal frame antenna A0, the second metal frame antenna A1 and the third metal frame antenna A2 are located on the lower frame. The first metal frame antenna A0 has the functions of a low-frequency diversity antenna and a high-frequency MIMO diversity antenna, the second metal frame antenna A1 has the functions of a medium-frequency MIMO main antenna and a high-frequency MIMO main antenna, and the third metal frame antenna A2 has the functions of a medium-frequency diversity antenna, a high-frequency diversity antenna and an ultra-high-frequency diversity antenna.

[0039] The fourth metal frame antenna A3, the fifth metal frame antenna A4, the sixth metal frame antenna A5, the seventh metal frame antenna A6, the eighth metal frame antenna A7 and the ninth metal frame antenna A8 are located on the upper frame. The fourth metal frame antenna A3 has the functions of a high-frequency main antenna and an ultra-high-frequency main antenna. The fifth metal frame antenna A4 has the functions of a GPS L1 antenna, a GPS L5 antenna, a Wi-Fi 2.4G antenna and a Wi-Fi 5G antenna. The sixth metal frame antenna A5 has the functions of a Wi-Fi 2.4G antenna and a Wi-Fi 5G antenna. The seventh metal frame antenna A6 has the functions of a low-frequency main antenna and a medium-frequency MIMO diversity antenna. The eighth metal frame antenna A7 has the function of an ultra-high-frequency MIMO main antenna. The ninth metal frame antenna A8 has the functions of a medium-frequency main antenna and an ultra-high-frequency MIMO diversity antenna.

[0040] Among them, using a metal frame antenna as the antenna of the mobile terminal 100 instead of an LDS (Laser Direct Structuring) antenna and an FPC (Flexible Printed Circuit) antenna can reduce the antenna cost of the mobile terminal 100.

[0041] Among them, the frequency range of low frequency is 617MHZ~960MHZ, the frequency range of medium frequency is 1710MHZ~2200MHZ, the frequency range of high frequency is 2300MHZ~2690MHZ, the frequency range of ultra-high frequency is 3300MHZ~4200MHZ, the frequency range of Wi-Fi2.4G / Bluetooth is 2400MHZ~2500MHZ, the frequency range of Wi-Fi 5G is 5150MHZ~5850MHZ, the frequency of GPS L1 is 1575MHZ, and the frequency of GPS L5 is 1176MHZ.

[0042] As can be seen from the above, the frequency bands supported by the mobile terminal antenna architecture 30 include low-frequency 2×2 MIMO (Multiple Input Multiple Output, multiple-input multiple-output system), medium-frequency 4×4 MIMO, high-frequency 4×4 MIMO, ultra-high-frequency 4×4 MIMO, dual GPS and dual Wi-Fi, basically covering the frequency bands of mainstream operators around the world.

[0043] Among them, low-band 2×2 MIMO, that is, the low frequency has two antennas, namely the main antenna and the diversity antenna. Mid-band 4×4 MIMO, high-band 4×4 MIMO, and ultra-high frequency 4×4 MIMO, namely the mid-band, high-band, and ultra-high frequency, respectively, have four antennas: the main antenna, the diversity antenna, the MIMO main antenna, and the MIMO diversity antenna (the MIMO main antenna and MIMO diversity antenna are collectively referred to as MIMO antennas).

[0044] In some embodiments, the lower frame includes a bottom edge, a first side edge, and a second side edge, one end of the bottom edge is fixedly connected to the first end of the first side edge, and the other end of the bottom edge is fixedly connected to the first end of the second side edge, the first metal frame antenna A0 is located on the bottom edge and the first side edge, the second metal frame antenna A1 is located on the bottom edge, and the third metal frame antenna A2 is located on the second side edge.

[0045] The clearance size range of the first metal frame antenna A0 and the second metal frame antenna A1 is 1.1 mm to 1.3 mm, and the clearance size range of the third metal frame antenna A2 is 0.15 mm to 0.25 mm.

[0046] In some embodiments, the upper frame includes a top edge, a third side edge and a fourth side edge, one end of the top edge is fixedly connected to the first end of the third side edge, the other end of the top edge is fixedly connected to the first end of the fourth side edge, the second end of the third side edge is fixedly connected to the second end of the first side edge, and the second end of the fourth side edge is fixedly connected to the second end of the fourth side edge. The fourth metal frame antenna A3 is located on the third side edge, the fifth metal frame antenna A4 is located on the third side edge and the top edge, the sixth metal frame antenna A5 is located on the top edge, the seventh metal frame antenna A6 is located on the top edge and the fourth side edge, the eighth metal frame antenna A7 is located on the fourth side edge, and the ninth metal frame antenna A8 is located on the fourth side edge, wherein the sixth metal frame antenna is located between the fifth metal frame antenna and the seventh metal frame antenna, and the eighth metal frame antenna A7 is located between the seventh metal frame antenna A6 and the ninth metal frame antenna A8.

[0047] Among them, the clearance size range of the fifth metal frame antenna A4, the sixth metal frame antenna A5 and the seventh metal frame antenna A6 is 1.1mm~1.3mm, and the clearance size range of the fourth metal frame antenna A3, the eighth metal frame antenna A7 and the ninth metal frame antenna A8 is 0.15mm~0.25mm.

[0048] In some embodiments, the first metal frame antenna A0 is connected to an antenna switch on the PCB board of the mobile terminal, and the antenna switch is used to switch the low frequency band of the first metal frame antenna A0.

[0049] The first metal frame antenna A0 is a monopole antenna that uses an antenna switch to switch between different low-frequency bands. The first metal frame antenna A0 is an independently suspended structure with a horizontal length ranging from 29mm to 31mm and a vertical length ranging from 16.5mm to 18.5mm.

[0050] The distance between the antenna feed point of the first metal frame antenna A0 and the antenna switch is in a range of 4 mm to 5 mm, and the first metal frame antenna A0 is not grounded.

[0051] The first metal frame antenna A0 uses an antenna switch (connecting different inductors in parallel to the ground) to switch between different low-frequency bands, achieving full coverage from 617MHz to 960MHz. When the antenna switch is switched to the 900MHz band, the first metal frame antenna A0 achieves optimal high-frequency performance. The advantages of the first metal frame antenna A0 include high low-frequency efficiency and a wide switching range.

[0052] For the free space efficiency of the first metal frame antenna A0, the low-frequency peak is -7dB and the bandwidth is also wide; when the antenna switch is switched to the 900MHz frequency band, the high-frequency efficiency is -5dB.

[0053] In some embodiments, the second metal frame antenna A1 is grounded, and a distance between a grounding point on the second metal frame antenna A1 and a feeding point of the second metal frame antenna A1 is in a range of 11 mm to 13 mm.

[0054] The second metal frame antenna A1 is an inverted F antenna (IFA) that resonates at medium and high frequencies. The distance between the feed point on the second metal frame antenna A1 and the end of the IFA antenna (near the first metal frame antenna A0) is 10 mm to 12 mm.

[0055] The free-space efficiency of the second metal frame antenna A1 is -5dB for both mid- and high-frequency bands, with a wide bandwidth (covering both mid- and high-frequency bands). Furthermore, the antenna's head-to-hand performance is good, with the left and right head-to-hand modes only down 6dB compared to free-space.

[0056] In some embodiments, a first plastic frame 001 (shown by dotted lines in the figure) is disposed between the first metal frame antenna A0 and the second metal frame antenna A1.

[0057] The first metal frame antenna A0 and the second metal frame antenna A1 are respectively fixedly connected to the first plastic frame 001 .

[0058] Antenna isolation is also a key performance metric. Better antenna isolation means less mutual interference. The first metal frame antenna A0 and the second metal frame antenna A1 support the same high-frequency band. Therefore, the first plastic frame 001 is designed to strengthen the isolation between the first and second metal frame antennas A0 and A1 at high frequencies. The length of the first plastic frame 001 ranges from 22mm to 24mm.

[0059] In some embodiments, the third metal frame antenna A2 includes a first sub-metal frame antenna 201, a second sub-metal frame antenna 202 and a third sub-metal frame antenna 203, a second plastic frame 002 (shown as blank in the figure) is arranged between the first sub-metal frame antenna 201 and the second sub-metal frame antenna 202, a third plastic frame 003 (shown as blank in the figure) is arranged between the first sub-metal frame antenna 201 and the third sub-metal frame antenna 203, the first sub-metal frame antenna 201 is a parasitic antenna, and the second sub-metal frame antenna 202 and the third sub-metal frame antenna 203 are grounded respectively.

[0060] The feed point of the first sub-metal frame antenna 201 is directly connected to the first sub-metal frame antenna 201 via a side-bounce method. The length of the first sub-metal frame antenna 201 is in the range of 2.5mm to 3.5mm, the length of the second sub-metal frame antenna 202 is in the range of 19.5mm to 21.5mm, and the length of the third sub-metal frame antenna 203 is in the range of 9.5mm to 10.5mm. The lengths of the second plastic frame 002 and the third plastic frame 003 are in the range of 1.45mm to 1.55mm. The first sub-metal frame antenna 201 and the second sub-metal frame antenna 202 are coupled to generate an intermediate frequency resonance; the first sub-metal frame antenna 201 and the third sub-metal frame antenna 203 are coupled to generate a high frequency resonance and an ultra-high frequency resonance.

[0061] The free-space efficiency of the third metal frame antenna A2 is -6dB for both mid- and high-frequency bands, with a wide bandwidth (covering both mid- and high-frequency bands). The efficiency for ultra-high frequencies is -5dB. Because the third metal frame antenna A2 is located on the lower side of the mobile terminal 100, it is less affected by head-hand motion. Therefore, the third metal frame antenna A2 performs better in head-hand mode.

[0062] In some embodiments, the distance between the second metal frame antenna A1 and the third metal frame antenna A2 ranges from 24 mm to 26 mm.

[0063] Among them, the second metal frame antenna A1 and the third metal frame antenna A2 support the same frequency band. In order to strengthen the isolation between the second metal frame antenna A1 and the third metal frame antenna A2 at medium and high frequencies, the distance range between the second metal frame antenna A1 and the third metal frame antenna A2 is set to 24mm~26mm.

[0064] In some embodiments, the fourth metal frame antenna A3 includes a fourth sub-metal frame antenna 301 and a fifth sub-metal frame antenna 302, and a fourth plastic frame 004 (shown as blank in the figure) is arranged between the fourth sub-metal frame antenna 301 and the fifth sub-metal frame antenna 302. The fourth sub-metal frame antenna 301 is a parasitic antenna, and the fourth sub-metal frame antenna 301 and the fifth sub-metal frame antenna 302 are grounded respectively.

[0065] The fourth metal frame antenna A3 is a loop antenna plus a parasitic antenna. The length of the fourth sub-metal frame antenna 301, which functions as a loop antenna, ranges from 4.5 mm to 5.5 mm, and the length of the fifth sub-metal frame antenna 302, which functions as a parasitic coupling, ranges from 5.5 mm to 6.5 mm. The combined action of the fourth sub-metal frame antenna 301 and the fifth sub-metal frame antenna 302 generates resonance at both the high frequency and ultra-high frequency bands.

[0066] The free-space efficiency of the fourth metal frame antenna A3 is -5.5dB on average at high frequencies and -5dB at ultra-high frequencies, with a wide bandwidth. Because the fourth metal frame antenna A3 is located on the upper side of the phone, it is less affected by head-hand motion. Therefore, the fourth metal frame antenna A3 performs well in head-hand mode.

[0067] In some embodiments, a fifth plastic frame 005 is disposed between the first metal frame antenna A0 and the fourth metal frame antenna A3.

[0068] The fifth plastic frame 005 is used to isolate the signal interference between the first metal frame antenna A0 and the fourth metal frame antenna A3.

[0069] In some embodiments, the fifth metal frame antenna A4 includes a sixth sub-metal frame antenna 401 and a seventh sub-metal frame antenna 402, a sixth plastic frame 006 is arranged between the sixth sub-metal frame antenna 401 and the seventh sub-metal frame antenna 402, the sixth sub-metal frame antenna 401 is a parasitic antenna, and the sixth sub-metal frame antenna 401 and the seventh sub-metal frame antenna 402 are grounded respectively.

[0070] The fifth metal frame antenna A4 functions as a Wi-Fi 2.4G antenna, the first Wi-Fi 5G antenna, and the GPS L1 and L5 antennas. The fifth metal frame antenna A4 is an IFA antenna plus a parasitic antenna.

[0071] In some embodiments, the sixth sub-metal frame antenna 401 has a horizontal length ranging from 17 mm to 19 mm, and a vertical length ranging from 9.5 mm to 10.5 mm.

[0072] In some embodiments, the length of the seventh sub-metal frame antenna 402 is in the range of 13 mm to 15 mm.

[0073] In some embodiments, the distance between the feeding point and the grounding point of the fifth metal frame antenna A4 is in the range of 7.5 mm to 8.5 mm.

[0074] Among them, the IFA antenna composed of the sixth sub-metal frame antenna 401 mainly generates the resonance of GPS L1 and GPS L5, as well as the resonance of Wi-Fi 5G; the parasitic antenna composed of the seventh sub-metal frame antenna 402 mainly generates the resonance of Wi-Fi 2.4G. For the free space efficiency of the fifth metal frame antenna A4, the efficiency of GPS L1 is -4.5dB, the efficiency of GPS L5 is -8dB, the efficiency of Wi-Fi 2.4G is -6dB, and the efficiency of Wi-Fi 5G is -5.5dB. Since the fifth metal frame antenna A4 is located in the corner above the mobile terminal 100, it is less affected by the hand, so the performance of the fifth metal frame antenna A4 in the head-hand mode is better.

[0075] In some embodiments, the sixth metal frame antenna A5 is grounded, and the distance between the antenna feeding point and the grounding point of the sixth metal frame antenna A5 is in the range of 7.5 mm to 8.5 mm.

[0076] In some embodiments, a seventh plastic frame 007 is disposed between the sixth metal frame antenna A5 and the fifth metal frame antenna A4.

[0077] The seventh plastic frame 007 is used to isolate the signal interference between the sixth metal frame antenna A5 and the fifth metal frame antenna A4.

[0078] Among them, the function of the sixth metal frame antenna A5 is the second path of the Wi-Fi 2.4G antenna and the Wi-Fi 5G antenna. The type of the sixth metal frame antenna A5 is an IFA antenna, and the length of the sixth metal frame antenna A5 ranges from 9.5mm to 10.5mm. The distance between the antenna feed point of the sixth metal frame antenna A5 and the end of the sixth metal frame antenna A5 (close to the fifth metal frame antenna A4) ranges from 1.5mm to 2.5mm. For the free space efficiency of the sixth metal frame antenna A5, the efficiency of Wi-Fi 2.4G and Wi-Fi 5G is -5.5dB.

[0079] In some embodiments, the seventh metal frame antenna A6 includes an eighth sub-metal frame antenna 601 and a ninth sub-metal frame antenna 602 , and the eighth sub-metal frame antenna 601 and the ninth sub-metal frame antenna 602 are fixedly connected.

[0080] The seventh metal frame antenna A6 is a loop plus parasitic antenna, that is, a loop antenna with the eighth sub-metal frame antenna 601 as the main body and a parasitic antenna with the ninth sub-metal frame antenna 602 as the main body.

[0081] In some embodiments, the length of the eighth sub-metal frame antenna 601 (ie, the distance between the antenna feeding point and the grounding point of the seventh metal frame antenna A6) ranges from 37 mm to 39 mm.

[0082] In some embodiments, the distance between the antenna feed point of the seventh metal frame antenna A6 and the antenna switch ranges from 15 mm to 17 mm.

[0083] In some embodiments, the lateral distance of the ninth sub-metal frame antenna 602 ranges from 4.5 mm to 6.5 mm, and the longitudinal distance of the ninth sub-metal frame antenna 602 ranges from 9.5 mm to 10.5 mm.

[0084] In some embodiments, the seventh metal frame antenna A6 is connected to an antenna switch on the PCB board of the mobile terminal, and the antenna switch is used to switch the low frequency band of the seventh metal frame antenna A6.

[0085] Among them, the seventh metal frame antenna A6 uses an antenna switch (different inductors or capacitors are connected in parallel to the ground) to switch different low-frequency bands, thereby achieving full coverage of 617MHz to 960MHz.

[0086] The free-space efficiency of the seventh metal frame antenna A6 is -6.5dB at low frequencies, with a wide bandwidth. The mid-frequency efficiency is -7.5dB. The seventh metal frame antenna A6 is relatively less affected by the head, resulting in better performance in head-hand mode.

[0087] In some embodiments, the eighth metal frame antenna A7 is grounded, and the distance between the grounding point and the antenna feed point is in the range of 2.5 mm to 3.5 mm.

[0088] In some embodiments, an eighth plastic frame 008 is disposed between the eighth metal frame antenna A7 and the seventh metal frame antenna A6.

[0089] The eighth plastic frame 008 is used to isolate the signal interference between the eighth metal frame antenna A7 and the seventh metal frame antenna A6.

[0090] The eighth metal frame antenna A7 is a loop antenna. The free-space efficiency of the eighth metal frame antenna A7 is -6dB at the average ultrahigh frequency. Because the eighth metal frame antenna A7 is located above and to the side of the mobile terminal 100, it is less affected by head and hand movements. Therefore, the eighth metal frame antenna A7 performs better in head-to-hand mode.

[0091] In some embodiments, the ninth metal frame antenna A8 includes a tenth sub-metal frame antenna 801 and an eleventh sub-metal frame antenna 802, a ninth plastic frame 009 is arranged between the tenth sub-metal frame antenna 801 and the eleventh sub-metal frame antenna 802, the tenth sub-metal frame antenna 801 is a parasitic antenna, and the tenth sub-metal frame antenna 801 and the eleventh sub-metal frame antenna 802 are grounded respectively.

[0092] In some embodiments, the length of the tenth sub-metal frame antenna 801 ranges from 23.5 mm to 25.5 mm.

[0093] In some embodiments, the length of the eleventh sub-metal frame antenna 802 is in the range of 7.5 mm to 8.5 mm.

[0094] In some embodiments, the length of the ninth plastic frame 009 ranges from 1 mm to 2 mm.

[0095] In some embodiments, the distance between the antenna feed point of the ninth metal frame antenna A8 and the grounding point on the tenth sub-metal frame antenna 801 is in the range of 8 mm to 9 mm.

[0096] Among them, the type of the ninth metal frame antenna A8 is an IFA plus parasitic antenna, that is, the IFA antenna with the tenth sub-metal frame antenna 801 as the main body, the IFA antenna generates intermediate frequency resonance, and the parasitic antenna with the eleventh sub-metal frame antenna 802 as the main body couples an ultra-high frequency resonance.

[0097] The free-space efficiency of the ninth metal frame antenna A8 is -4.5dB on average for intermediate frequencies and -6dB on average for ultrahigh frequencies. Because the ninth metal frame antenna A8 is located above and to the side of the mobile terminal 100, it is less affected by head and hand movements. Therefore, the ninth metal frame antenna A8 performs better in head-to-hand mode.

[0098] In some embodiments, the distance between the fourth metal frame antenna A3 and the fifth metal frame antenna A4 is in the range of 16 mm to 18 mm, and the metal frame between the fourth metal frame antenna A3 and the fifth metal frame antenna A4 is paved with a common ground.

[0099] The fourth metal frame antenna A3 and the fifth metal frame antenna A4 jointly support a frequency of 2400 MHz to 2500 MHz. To enhance isolation, a common ground is laid on the metal frame between the fourth metal frame antenna A3 and the fifth metal frame antenna A4.

[0100] In summary, the present invention provides a mobile terminal antenna architecture comprising nine metal frame antennas. A first metal frame antenna A0, a second metal frame antenna A1, and a third metal frame antenna A2 are located on the lower frame of the mobile terminal and integrate the functions of a low-frequency diversity antenna, a high-frequency MIMO diversity antenna, a medium-frequency MIMO main antenna, a high-frequency MIMO main antenna, a medium-frequency diversity antenna, a high-frequency diversity antenna, and an ultra-high-frequency diversity antenna. A fourth metal frame antenna A3, a fifth metal frame antenna A4, a sixth metal frame antenna A5, a seventh metal frame antenna A6, an eighth metal frame antenna A7, and a ninth metal frame antenna A8 are located on the upper frame of the mobile terminal and integrate the functions of a high-frequency main antenna, an ultra-high-frequency main antenna, a GPS L1 antenna, a GPS L5 antenna, a Wi-Fi 2.4G antenna, a Wi-Fi 5G antenna, a low-frequency main antenna, a medium-frequency MIMO diversity antenna, an ultra-high-frequency MIMO main antenna, a medium-frequency main antenna, and an ultra-high-frequency MIMO diversity antenna. The layout of the metal frame antenna and the performance of each antenna greatly improve the free space efficiency and head-to-hand performance of the antenna.

[0101] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0102] The above is a detailed introduction to a mobile terminal antenna architecture and a mobile terminal provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A mobile terminal antenna architecture, applied to a mobile terminal, characterized in that: A metal frame segment comprising the mobile terminal and a metal frame antenna designed based on the metal frame segment; The metal frame antenna includes a first metal frame antenna, a second metal frame antenna, a third metal frame antenna, a fourth metal frame antenna, a fifth metal frame antenna, a sixth metal frame antenna, a seventh metal frame antenna, an eighth metal frame antenna and a ninth metal frame antenna; The frame of the mobile terminal includes an upper frame located at the upper part of the mobile terminal and a lower frame located at the lower part of the mobile terminal. The first metal frame antenna, the second metal frame antenna, and the third metal frame antenna are located on the lower frame. The first metal frame antenna has the functions of a low-frequency diversity antenna and a high-frequency MIMO diversity antenna. The second metal frame antenna has the functions of a medium-frequency MIMO main antenna and a high-frequency MIMO main antenna. A first plastic frame is provided between the first metal frame antenna and the second metal frame antenna. The third metal frame antenna has the functions of a medium-frequency diversity antenna, a high-frequency diversity antenna, and an ultra-high-frequency diversity antenna. The fourth metal frame antenna, the fifth metal frame antenna, the sixth metal frame antenna, the seventh metal frame antenna, the eighth metal frame antenna and the ninth metal frame antenna are located on the upper frame, the fourth metal frame antenna has the functions of a high-frequency main antenna and an ultra-high-frequency main antenna, the fifth metal frame antenna has the functions of a GPS L1 antenna, a GPS L5 antenna, a Wi-Fi 2.4G antenna and a Wi-Fi 5G antenna, and the metal frame located between the fourth metal frame antenna and the fifth metal frame antenna is paved with a common ground; the sixth metal frame antenna has the functions of a Wi-Fi 2.4G antenna and a Wi-Fi 5G antenna, the seventh metal frame antenna has the functions of a low-frequency main antenna and a medium-frequency MIMO diversity antenna, the eighth metal frame antenna has the function of an ultra-high-frequency MIMO main antenna, and the ninth metal frame antenna has the functions of a medium-frequency main antenna and an ultra-high-frequency MIMO diversity antenna.

2. The mobile terminal antenna architecture according to claim 1, wherein: The lower frame includes a bottom edge, a first side edge and a second side edge, one end of the bottom edge is fixedly connected to the first end of the first side edge, and the other end of the bottom edge is fixedly connected to the first end of the second side edge, the first metal frame antenna is located on the bottom edge and the first side edge, the second metal frame antenna is located on the bottom edge, and the third metal frame antenna is located on the second side edge.

3. The mobile terminal antenna architecture according to claim 2, wherein: The upper frame includes a top edge, a third side edge and a fourth side edge, one end of the top edge is fixedly connected to the first end of the third side edge, the other end of the top edge is fixedly connected to the first end of the fourth side edge, the second end of the third side edge is fixedly connected to the second end of the first side edge, and the second end of the fourth side edge is fixedly connected to the second end of the fourth side edge. The fourth metal frame antenna is located on the third side edge, the fifth metal frame antenna is located on the third side edge and the top edge, the sixth metal frame antenna is located on the top edge, the seventh metal frame antenna is located on the top edge and the fourth side edge, the eighth metal frame antenna is located on the fourth side, and the ninth metal frame antenna is located on the fourth side, wherein the sixth metal frame antenna is located between the fifth metal frame antenna and the seventh metal frame antenna, and the eighth metal frame antenna is located between the seventh metal frame antenna and the ninth metal frame antenna.

4. The mobile terminal antenna architecture according to claim 1, wherein: The first metal frame antenna is connected to an antenna switch on the PCB board of the mobile terminal, and the antenna switch is used to switch the low frequency band of the first metal frame antenna.

5. The mobile terminal antenna architecture according to claim 1, wherein: The second metal frame antenna is grounded, and a distance between a grounding point on the second metal frame antenna and a feeding point on the second metal frame antenna is in a range of 11 mm to 13 mm.

6. The mobile terminal antenna architecture according to claim 1, wherein: The third metal frame antenna includes a first sub-metal frame antenna, a second sub-metal frame antenna and a third sub-metal frame antenna. A second plastic frame is arranged between the first sub-metal frame antenna and the second sub-metal frame antenna, and a third plastic frame is arranged between the first sub-metal frame antenna and the third sub-metal frame antenna. The first sub-metal frame antenna is a parasitic antenna, and the second sub-metal frame antenna and the third sub-metal frame antenna are grounded respectively.

7. The mobile terminal antenna architecture according to claim 1, wherein: The fourth metal frame antenna includes a fourth sub-metal frame antenna and a fifth sub-metal frame antenna. A fourth plastic frame is arranged between the fourth sub-metal frame antenna and the fifth sub-metal frame antenna. The fourth sub-metal frame antenna is a parasitic antenna. The fourth sub-metal frame antenna and the fifth sub-metal frame antenna are grounded respectively.

8. The mobile terminal antenna architecture according to claim 1, wherein: The fifth metal frame antenna includes a sixth sub-metal frame antenna and a seventh sub-metal frame antenna. A sixth plastic frame is arranged between the sixth sub-metal frame antenna and the seventh sub-metal frame antenna. The sixth sub-metal frame antenna is a parasitic antenna. The sixth sub-metal frame antenna and the seventh sub-metal frame antenna are grounded respectively.

9. The mobile terminal antenna architecture according to claim 1, wherein: The ninth metal frame antenna includes a tenth sub-metal frame antenna and an eleventh sub-metal frame antenna. A ninth plastic frame is arranged between the tenth sub-metal frame antenna and the eleventh sub-metal frame antenna. The tenth sub-metal frame antenna is a parasitic antenna. The tenth sub-metal frame antenna and the eleventh sub-metal frame antenna are grounded respectively.

10. A mobile terminal, characterized in that: The mobile terminal antenna architecture comprises any one of claims 1-9.

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