Antenna module of mobile communication terminal and mobile communication terminal

Antenna module of mobile communication terminal and mobile communication terminal technical field

[0001] The present invention relates to the field of antenna technology, and more specifically, to an antenna module of a mobile communication terminal and a mobile communication terminal.

Background technique

[0002] With the rapid development of the mobile Internet and the Internet of Things, communication technology has gradually entered the 5G (fifth generation mobile communication) era. Peoples demand for high-speed transmission of communication data is constantly increasing, and mobile phones need to have greater data throughput. This poses a challenge to the current structural design of antennas on mobile phones.

[0003] Multi-input and multi-output (MIMO) means that multiple channels are used for communication at the same time, which is regarded as an effective solution to increase communication capacity. In this case, multiple antennas work in the same frequency band at the same time, so design on mobile phones More antennas. Limited by the space layout of mobile phones, mobile phones in the 4G (fourth generation mobile communication) era use a 4X4 MIMO design (4 receiving antennas, 4 transmitting antennas) at most. 5G (fifth generation mobile communication) is expected to adopt a multi-antenna design of 8 X 8 (8 receiving antennas, 8 transmitting antennas).

[0004] A metal frame mobile phone (for example, a full-screen mobile phone) is easy to achieve a higher screen-to-body ratio, has a good appearance, and has gradually been favored by more and more users. Metal frame mobile phones also have good structural stability, but the antenna design of metal frame mobile phones in the 5G era has brought new challenges.

[0005] The metal frame mobile phone generally includes the uppermost screen of the mobile phone, the mobile phone metal bracket in the middle layer, and the lowermost mobile phone shell. Electronic devices such as batteries, motherboards (PCBs), cameras, etc. will be mounted on the mobile phone holder.

[0006] FIG. 1 is a front view of an existing metal frame mobile phone.

[0007] As shown in FIG. 1, the metal frame of the existing mobile phone metal frame selects the upper and lower ends of the mobile phone frame to lay out the antenna, and the metal frame is used as the antenna or the FPCB.LDS support antenna is arranged in the clearance area D. Clearance area means that the electronic devices near the antenna area of the mobile phone have a greater impact on the antenna radiation. Usually, a certain clearance area is left near the antenna area and no electronic devices are placed.

[0008] This design usually divides the upper and lower metal frame of the mobile phone into several segments. For example, the upper metal frame 10 and the lower metal frame 20 are used as antenna radiators to realize a multi-antenna design without using the side metal frame 30 ( For example, side border).

[0009] The radiation area of such an antenna is mainly concentrated on the upper and lower ends of the mobile phone, and it is required to reserve a clear space area on the upper and lower borders to ensure higher radiation efficiency.

[0010] With the improvement of communication technology, more antennas are needed to realize MIMO, and new communication frequency bands will be added in the future 5G, which is difficult to lay out in the existing space.

[0011] In addition, the upper and lower frames of the mobile phone are used as radiators, and the electronic devices near the frame have a greater impact on the antenna radiation, and a certain clearance area D needs to be left near the area. This design affects the components of the mobile phone. The layout and antenna debugging bring great difficulties.

Summary of the invention

[0012] The object of the present invention is to provide an antenna module of a mobile communication terminal and a mobile communication terminal including the antenna module, so as to realize MIMO and expand the antenna area of the mobile communication terminal.

[0013] According to one aspect of the present invention, an antenna module for a mobile communication terminal includes: a metal body, the metal body including at least one metal frame of the mobile communication terminal; a gap formed in the metal body and used as a radiator; The part is arranged in the gap and is not in contact with the metal frame; the electrical connection part electrically connects the power feeding part with the main board of the mobile communication terminal; wherein, the power feeding part is coupled to the gap to feed power.

[0014] According to an embodiment of the present invention, the at least one metal frame may include at least one of an upper metal frame, a lower metal frame, a left metal frame, and a right metal frame of the mobile communication terminal.

[0015] According to an embodiment of the present invention, the slit may be opened in the metal body along a direction parallel to the screen of the mobile communication terminal, or the slit may be opened in the metal body along a direction perpendicular to the screen of the mobile communication terminal; and/or , The power feeding part may be a metal component.

[0016] According to an embodiment of the present invention, the metal component may be sheet-like and/or "1"-shaped, H-shaped or "I"-shaped; and/or when the gap is in a direction parallel to the screen of the mobile communication terminal When opened in the metal body, the gap can be covered by the screen and/or back cover of the mobile communication terminal.

[0017] According to an embodiment of the present invention, the antenna module may further include a dielectric part filled in the gap, and the power feeding part is provided in the dielectric part.

[0018] According to an embodiment of the present invention, the power feeding part may be parallel to the slot; and/or, the antenna module may further include a carrying plate, and the feeding part may be arranged on the carrying plate and arranged on the dielectric part together with the carrying plate in.

[0019] According to an embodiment of the present invention, the power feeder and the carrying plate may be detachably inserted in the gap.

[0020] According to an embodiment of the present invention, the electrical connection portion may include a metal wire, one end of the metal wire is connected to the feeding point of the power feeding portion, and the other end of the metal wire is electrically connected to the radio frequency circuit on the main board, or the electrical connection portion It includes a thimble, one end of the thimble is in contact with the feeding point of the power feeding part, and the other end of the thimble is electrically connected with the radio frequency circuit on the main board.

[0021] According to an embodiment of the present invention, the opening of the slot may be rectangular; and/or the length of the slot may be at least half of the wavelength of the radio frequency signal transmitted by the antenna module; and/or the width of the slot may not be less than 0.4mm .

[0022] According to another aspect of the present invention, a mobile communication terminal may include the above-mentioned antenna module.

[0023] According to an embodiment of the present invention, a gap is opened in the metal body of the mobile terminal, and the power feeder is coupled with the gap, and energy transmission is realized through the resonance of the radio frequency signal at the gap.

[0024] According to the embodiment of the present invention, a gap can be formed in the metal frame of the mobile communication terminal, so that a new antenna area can be opened up.

[0025] Additional aspects and/or advantages of the present invention will be partially explained in the following description, and some parts will be clear through the description, or can be learned through the implementation of the present invention.

Description of the drawings

[0026] Through the following detailed description in conjunction with the accompanying drawings, the above and other objectives, features and advantages of the present invention will become clearer, among which:

[0027] FIG. 1 is a front view of an existing metal frame mobile phone;

[0028] FIG. 2 is a front view schematically showing the antenna module of the mobile communication terminal according to the first embodiment of the present invention;

[0029] FIG. 3 is a side view schematically showing the antenna module of the mobile communication terminal according to the first embodiment of the present invention;

[0030] FIG. 4 is a diagram showing the radiation direction of the XZ section of the antenna module of the mobile communication terminal according to the first embodiment of the present invention

Figure;

[0031] FIG. 5 is a radiation pattern of the XY section of the antenna module of the mobile communication terminal according to the first embodiment of the present invention;

[0032] FIG. 6 is a front view schematically showing a second slot of the antenna module of the mobile communication terminal according to the second embodiment of the present invention;

[0033] FIG. 7 is a front view schematically showing an antenna module of a mobile communication terminal according to a second embodiment of the present invention;

[0034] FIG. 8 is a radiation pattern of the XZ cut plane of the antenna module of the mobile communication terminal according to the second embodiment of the present invention;

[0035] FIG. 9 is a radiation pattern of the XY section of the antenna module of the mobile communication terminal according to the second embodiment of the present invention.

Detailed ways

[0036] According to an embodiment of the present invention, a slot opened in the metal frame of a mobile communication terminal (for example, a smart phone) is used as an antenna radiator to transmit or receive radio frequency signals.

[0037] The embodiments of the present invention are described below with reference to the accompanying drawings, in which the same reference numerals always indicate the same components.

[0038] FIG. 2 is a front view schematically showing the antenna module of the mobile communication terminal according to the first embodiment of the present invention, and FIG. 3 is schematically showing the mobile communication terminal according to the first embodiment of the present invention Side view of the antenna module.

[0039] As shown in FIG. 2, at least one metal frame of the mobile communication terminal may include an upper metal frame 10, a lower metal frame 20, and a side metal frame 30 (for example, a left metal frame and a right metal frame), and the upper metal frame 10 And the lower metal frame 20 may respectively extend in the X direction (for example, the lateral direction or the width direction of the mobile communication terminal), and the side metal frame 30 may extend in the Y direction (for example, the height direction or the longitudinal direction of the mobile communication terminal), and The thickness of the side metal frame 30 may correspond to the thickness of the mobile communication terminal. Here, the thickness direction of the mobile communication terminal may be defined as the Z direction.

[0040] The upper metal frame 10, the lower metal frame 20, and the side metal frame 30 can be cut from the entire upper frame, the entire lower frame, and a part of the entire side frame, respectively, and a part of the side metal frame 30 can extend to the upper frame or the lower frame. frame.

[0041] The upper metal frame 10, the lower metal frame 20, and the side metal frame 30 may be separated from each other by a segmented portion (for example, a gap), and the gap may be filled with a non-conductive material (for example, resin) to realize the upper metal frame 10, the lower metal frame 10, and the lower metal frame. The electrical isolation between the metal frame 20 and the side metal frame 30. In addition, the upper metal frame 10 and the lower metal frame 20 may be respectively connected to a radio frequency (RF) module in a mobile communication terminal to be used as an antenna radiator alone.

[0042] However, according to the embodiment of the present invention, the slit formed on the metal frame is used as an antenna radiator to radiate energy outward or receive energy.

[0043] As shown in FIGS. 2 and 3, the antenna module according to the first embodiment of the present invention may include a metal body (the metal body may include at least one metal frame of a mobile communication terminal), a first slot 50, a first The power feeding portion 42 and the first electrical connection portion 43, the first slit 50 may be formed in a metal body (for example, a metal frame of a mobile communication terminal) and used as a radiator, and the first power feeding portion 42 may be disposed in the first slit 50 It can be separated from the metal frame, in other words, the first power feeding portion 42 does not contact the metal frame (for example, the side metal frame 30). The first power feeder 42 may be installed in the first slit 50, for example, the first power feeder 42 may pass through the first slit 50 and be fixed on the main board of the mobile communication terminal.

[0044] As shown in FIGS. 2 and 3, the size of the first power feeder 42 may be smaller than the size of the first slit 50. For example, the length of the first power feeding part 42 may be smaller than the length of the first slit 50, and the thickness of the first power feeding part 42 may be smaller than the width of the first slit 50.

[0045] The first slot 50 may have any shape, preferably a rectangular cross-section, that is, the opening of the first slot 50 may be rectangular, and the length of the first slot 50 may be at least half of the wavelength of the radio frequency signal transmitted by the antenna module, that is, The length of the first slot 50 may be greater than or equal to In/2 (in may be the waveguide wavelength corresponding to the operating frequency of the antenna), so that the RF current resonates at the first slot 50 to generate a radiated electromagnetic field or receive radio frequency signals.

[0046] The width of the first slit 50 may be greater than or equal to 0.4 mm, and may be less than the thickness of the metal frame of the mobile communication terminal (for example, 8 mm). The first slot 50 may be opened in a metal body including at least one metal frame of the mobile communication terminal, and the at least one metal frame may include at least one of the upper metal frame 10, the lower metal frame 20, and the left metal frame and the right metal frame.

[0047] The first electrical connection part 43 may electrically connect the first power feeding part 42 with the main board (for example, a printed circuit board not shown) of the mobile communication terminal, so that the first power feeding part 42 may be connected to the first gap 50. Coupled feed. The first power feeder 42 may be provided in the first slit 50. In this application, the provision of the power feeder in the gap may mean that from a certain viewing angle (for example, front view or side view) of the mobile communication terminal, the entire outline of the power feeder is located in the gap.

[0048] As shown in FIG. 2, the first electrical connection portion 43 may be formed of the same material as the first power feeding portion 42, and may be formed integrally with the first power feeding portion 42. For example, the first electrical connection portion 43 may be perpendicular to the first power feeding portion 42, and may form a T-shape with the first power feeding portion 42, and the first electrical connection portion 43 may be connected to the middle position of the first power feeding portion 42, In this way, the first power feeder 42 is divided into two symmetrical parts to transmit radio frequency signals.

[0049] The T-shaped feed is convenient to adjust the antenna impedance. For example, the length of the T-shaped structure can be adjusted to adjust the impedance. Of course, the feed part of the present invention can have any shape with the electrical connection part.

[0050] However, the first power feeding portion 42 may have a sheet shape (for example, a metal sheet), for example, the first power feeding portion 42 may be a metal member, for example, may be a conductive pattern formed by screen printing (for example, a metal sheet). pattern). In addition, when viewed from the Z direction, the shape of the first power feeding portion 42 may be a "1" shape, an H shape, an I shape, or the like as shown in FIG. 7. The first power feeding portion 42 in a sheet shape may be parallel to the first slit 50.

[0051] Specifically, the first electrical connection part 43 may include a metal wire, and one end of the metal wire may be connected to a feeding point of the first power feeding part (the feeding point may preferably equally divide the first power feeding part 42 into two. Part) connection, the other end of the metal wire can be electrically connected to the radio frequency circuit on the motherboard. Specifically, for example, the other end of the metal wire may be electrically connected to the main board through other electrical connectors.

[0052] The first power feeding part 42 may have a certain thickness, and may have a shape corresponding to the first slit 50. For example, the first power feeder 42 may have a rectangular parallelepiped shape, and may have a rectangular cross section.

[0053] The first slit 50 formed in the metal body may be opened vertically to the screen of the mobile communication terminal. As shown in FIG. 3, when viewing the side of the mobile communication terminal from the X direction, the first slit 50 may be perpendicular to the screen of the mobile communication terminal, and the first power feeder 42 may preferably be connected to the screen, battery, and rear of the mobile communication terminal. Covers and the like (not shown) are arranged in parallel. However, the present invention is not limited to this, and the first power feeder 42 may not be arranged in parallel with the screen, battery, back cover, etc. (not shown) of the mobile communication terminal, but only when the side of the mobile communication terminal is viewed from the X direction. Just set it in the first gap 50.

[0054] As shown in FIG. 3, the first power feeder 42 can be inserted into the side metal frame 30 of the mobile communication terminal through the first gap 50. The installation method of the first power feeder 42 in the metal frame is the same as The status can be similar to the installation mode and status of the SIM card on the side of the mobile communication terminal.

[0055] Preferably, the antenna module may further include a carrier board 41 (for example, a printed circuit board), and the carrier board 41 may be made of non-gold

It is a non-metal plate made of materials, however, the present invention is not limited to this. The carrying plate 41 can be made of any material, as long as the carrying plate 41 does not have conductivity and electromagnetic shielding properties.

[0056] The first power feeder 42 may be arranged on the carrier plate 41 and in the first gap 50 together with the carrier plate 41. The length of the supporting plate 41 may be less than the length of the first slit 50, and the thickness of the supporting plate 41 may be less than the width of the first slit 50.

[0057] The carrier board 41 may be a board independent of the main board of the mobile communication terminal, that is, the carrier board 41 may be integrated with the first power feeding portion 42 and the first electrical connection portion 43 in advance, and may be It is detachably installed in the first gap 50.

[0058] In addition, the first power feeding portion 42 may be detachably installed in the first slit 50 and not in contact with the metal frame. In addition, the first power feeding portion 42 may be installed in the first gap 50 through a corresponding bracket (for example, a plastic bracket), or may be directly attached to the main board to be kept fixed. The plastic bracket here can also be regarded as the carrying plate 41.

[0059] Preferably, the antenna module according to the first embodiment of the present invention may further include a dielectric part 60 (for example, resin) filled in the first slit 50, and the first power feeding part 42 may be provided in the dielectric part. In addition, the first power feeding part 42 may be arranged in the dielectric part 60 together with the carrier plate 41.

[0060] The dielectric part 60 may be formed in the first gap 50 by injection molding, and the dielectric part 60 may be used as a supporting part. For example, the dielectric part 60 may be used as a supporting part of the carrier plate 41, and the carrier plate 41 is not provided. In this case, the dielectric part 60 can also be used as a support part of the first power feeding part 42 or the first electrical connection part 43.

[0061] In addition, the dielectric part 60 may have a predetermined dielectric constant, and thus may affect the resonance frequency of the radio frequency signal. Different gap sizes can be designed by adjusting the dielectric constant of the dielectric part 60. That is, the resonance signal can be transmitted by setting the dielectric constant of the dielectric part 60 and the size of the slit (for example, the length of the slit).

[0062] According to an embodiment of the present invention, the antenna module may further include an impedance matching circuit that can match the impedance of the transmission line with the impedance of the antenna to prevent signal reflection, for example, the impedance of the feeder in a slot environment. Keep matching with the impedance of the transmission line of the radio frequency signal. Although not shown in the drawings, the impedance matching circuit can be connected between the power feeder and the transmission line, and can be realized by an LC circuit.

[0063] When the antenna module is used as a transmitting antenna module, the current flow is as follows: the current flows from the radio frequency circuit on the main board to the impedance matching circuit via the transmission line, and then is transmitted to the first power feeding portion 42 through the first electrical connection portion 43, and then passes through the first electrical connection portion 43. A power feeder 42 couples energy into the first slot 50 and resonates at the first slot 50 to form an electromagnetic field and radiate out. When the antenna module is used as a receiving antenna module, the direction of current flow is opposite to that of transmitting.

[0064] When installing the antenna module, the first power feeding portion 42 (or the first power feeding portion 42 and the dielectric portion 60 as a whole) can be inserted into at least one metal frame (for example, upper metal frame, lower metal frame, In the first gap 50 of at least one of the left metal frame and the right metal frame), one end of the first electrical connection portion 43 may be located inside the first gap 50, and the other end of the first electrical connection portion 43 may be electrically connected to the impedance matching circuit. connection. Although not shown, the first electrical connection part 43 may be electrically connected to the main board through a metal spring, a buckle, a flat cable, or the like.

[0065] FIG. 4 is a diagram showing the radiation pattern of the XZ section of the antenna module of the mobile communication terminal according to the first embodiment of the present invention, and FIG. 5 is a diagram showing the antenna module of the mobile communication terminal according to the first embodiment of the present invention. Radiation pattern of the XY section.

[0066] It can be seen from FIGS. 4 and 5 that the main energy of the antenna module radiates to both sides of the mobile communication terminal (near the XZ plane).

[0067] The opening of the first slot 50 is on the side of the mobile communication terminal. The maximum radiation intensity of the antenna module is located near the XZ plane, while the maximum radiation intensity of the traditional upper metal frame antenna and lower metal frame antenna is located near the XY plane. hair

The antenna of the first embodiment described can be complementary to the conventional antenna module to form a radiation coverage area.

[0068] FIG. 6 is a diagram schematically showing a second slot of the antenna module of the mobile communication terminal according to the second embodiment of the present invention. Fig. 7 is a front view schematically showing an antenna module of a mobile communication terminal according to a second embodiment of the present invention.

[0069] As shown in FIGS. 6 and 7, the antenna module according to the second embodiment of the present invention may include a metal body (the metal body may at least include at least one metal frame of the mobile communication terminal), a second slot 80, and a second The power feeding part 73 and the second electrical connection part 72, the second slit 80 may be formed in the metal body of the mobile communication terminal and used as a radiator, and the second power feeding part 73 may be disposed in the second slit 80 and may be connected to the metal frame Separately, that is, the second power feeding portion 73 may not be in contact with the metal frame.

[0070] The second slot 80 can also have any shape, and preferably has a rectangular cross-section, that is, the opening of the second slot 80 can be rectangular, and the length of the second slot 80 can be at least half of the wavelength of the radio frequency signal transmitted by the antenna module. For example, the length of the second slot 80 may be greater than or equal to λ/2 (waveguide wavelength corresponding to the operating frequency of the antenna), so that the RF current resonates at the second slot 80 to generate a radiated electromagnetic field or receive radio frequency signals.

[0071] The width of the second slit 80 may be greater than or equal to 0.4 mm, and may be less than the thickness of the portion of the side metal frame of the mobile communication terminal extending toward the front and rear sides of the mobile communication terminal (for example, 4 mm).

[0072] The second gap 80 may be opened in at least one of the upper metal frame 10, the lower metal frame 20, and the side metal frame 30 (including the left metal frame and the right metal frame) of the mobile communication terminal.

[0073] Preferably, the second slit 80 can be opened in the metal body, for example, can be opened in the side metal frame 30 of the mobile communication terminal, when viewed from the Z direction, the side metal frame 30 can have a certain width . In other words, in addition to the side metal frame viewed from the X direction, a part of the metal frame 30 may extend inward. For example, the side metal frame 30 may be integrated with the back cover of the entire mobile communication terminal. form.

[0074] The metal body in the present application may include at least one metal frame and a part extending from the at least one metal frame.

[0075] As shown in FIG. 7, the second slit 80 may be opened in the metal body along a direction parallel to the screen of the mobile communication terminal. The second power feeder 73 may have a similar structure to the first power feeder 42.

[0076] For example, as shown in FIG. 7, the second power feeding portion 73 may be in a sheet shape, and the second power feeding portion 73 may preferably be arranged perpendicular to the screen of the mobile communication terminal. The second power feeder 73 may be coupled with the second slot 80 to feed power. The second power feeding portion 73 in a sheet shape may be parallel to the second slit 80.

[0077] The antenna module according to the second embodiment of the present invention may further include a second electrical connection part 72 formed of the same material as the second power feeding part 73, and the second electrical connection part 72 may be connected to the second power feeding part 73. The part 73 is formed as one body. For example, the second electrical connection portion 72 may be perpendicular to the second power feeding portion 73, and may form a T shape with the second power feeding portion 73, and the second electrical connection portion 72 may be connected to the middle position of the second power feeding portion 73, In this way, the second feeder 73 is divided into two symmetrical parts to transmit radio frequency signals.

[0078] Specifically, the second electrical connection portion 72 may include a metal wire, and one end of the metal wire may be connected to the feeding point of the second feeding portion 72 (the feeding point may preferably divide the second feeding portion 73 into two). Part) connection, and the other end of the metal wire is electrically connected to the radio frequency circuit on the main board.

[0079] In addition, as shown in FIG. 7, the second electrical connection portion 72 may include a thimble, one end of the thimble may be in contact with the feeding point of the second power feeding portion 73, and the other end of the thimble may be electrically connected to the radio frequency circuit on the main board. connection.

[0080] In the case where the second power feeder is electrically connected to the main board through the thimble, the redundant metal wire can be omitted, that is,

The power feeding part 72 may be a thimble. Direct contact with the feed point via the thimble, the connection method is simple and reliable. In addition, when the metal wire is additionally provided, the antenna impedance can be adjusted by adjusting the length of the metal wire, thereby facilitating impedance matching.

[0081] The second power feeding part 73 may be a metal member, for example, a conductive pattern (for example, a metal pattern) formed by screen printing, and the second power feeding part 73 may have a certain thickness, and may have the same thickness as the first The corresponding shape of the two slits 80.

[0082] For example, the second power feeder 73 may have a sheet shape, and may have a rectangular cross section. In addition, as shown in FIG. 7, when viewed from the X direction, the shape of the first power feeding portion 42 may be a shape such as a "1" type, an H type, or an I type as shown in FIG. 7. The H-type and I-type second feeder 73 can improve the radiation performance of the antenna. The second power feeder 73 may preferably form a coupling surface with two metal surfaces on the X-Z surface in the second slot 80. That is, the second power feeder 73 may preferably be arranged vertically to the screen of the mobile communication terminal.

[0083] As shown in FIG. 6, the second slit 80 of the second embodiment has a different opening manner from the first slit 50 of the first embodiment. The second slit 80 of the second embodiment opens in a direction parallel to the screen.

[0084] As described above, when viewed from the Z direction, the side metal frame 30 may have a certain width, and a part of the side metal frame 30 may extend inwardly, that is, the side metal frame 30 may include surfaces that respectively extend For the extended metal frames on the front and rear sides of the mobile communication terminal, the second slit 80 may be symmetrically formed in the extended metal frame, and the second power feeder 73 may be installed in the second slit 80, and the second power feeder 73 It may preferably be arranged vertically to the screen of the mobile communication terminal.

[0085] The extended metal frame may be covered by the screen of the mobile communication terminal or the back cover of the mobile communication terminal. In this case, the extended metal frame may also be regarded as a part of the metal bracket or the metal body mentioned above. In other words, the two slits symmetrically formed in the extended metal frame are respectively covered by the screen and the back cover of the mobile communication terminal, so the appearance can be improved. At this time, the back cover is preferably made of a non-metallic material (for example, plastic or ceramic).

[0086] The second power feeder 73 may be inserted into the metal body through the second slit 80. For example, the second power feeder 73 may be inserted into the metal frame of the mobile communication terminal through the second gap 80 in a direction perpendicular to the screen.

[0087] For example, the second power feeder 73 may be detachably installed in the second slit 80. In addition, the second power feeder 73 may be installed in the second gap 80 through a corresponding bracket (for example, a plastic bracket), or may be directly attached to the main board to be kept fixed.

[0088] Preferably, the antenna module according to the second embodiment of the present invention may further include a carrier board (for example, a printed circuit board not shown), and the second power feeder 73 may be arranged on the carrier board and be connected to the carrier board. The plates are arranged in the second gap 80 together. As mentioned above, the carrying plate can be a non-metallic plate made of non-metallic materials. However, the present invention is not limited to this. The carrying plate can be made of any material, as long as the carrying plate does not have conductivity and electromagnetic shielding properties. .

[0089] The carrier board may be a board independent of the main board of the mobile communication terminal, that is, the carrier board may be pre-formed with the second power feeding part and the second electrical connection part, etc., and can be detachably installed in the second In the gap 80.

[0090] Preferably, the antenna module according to the second embodiment of the present invention may further include a dielectric part 60 (for example, resin) filled in the second slit 80, and the second power feeding part 73 may be provided in the dielectric part. 60, as shown in Figure 7.

[0091] The dielectric portion 60 may be formed in the second gap 80 by injection molding, and the dielectric portion 60 may be used as a supporting portion. For example, the dielectric portion 60 may be used as a supporting portion of a carrier board, in the absence of a carrier board. Next, the dielectric part 60 can also be used as a support part of a power feeding part or an electrical connection part.

[0092] In addition, the dielectric part 60 may have a predetermined dielectric constant, and thus may affect the resonance frequency of the radio frequency signal. Different gap sizes can be designed by adjusting the dielectric constant of the dielectric part 60. That is, the resonance signal can be transmitted by setting the dielectric constant of the dielectric part 60 and the size of the slit (for example, the length of the slit).

[0093] Similar to the first embodiment, the antenna module according to the second embodiment of the present invention may also include an impedance matching circuit,

The impedance matching circuit can keep the impedance of the transmission line matched with the impedance of the antenna to prevent signal reflection, for example, keep the impedance of the feeder in the slot environment matched with the impedance of the transmission line of the radio frequency signal. Although not shown in the drawings, the impedance matching circuit may be connected between the electrical connection part (for example, a thimble) and the transmission line, and may be realized by an LC circuit.

[0094] Therefore, when the antenna module is working, the current flows as follows: when the antenna module is used as a transmitting antenna module, the current flows from the RF circuit on the main board through the transmission line through the impedance matching circuit, and then through the thimble to the second feeder, via The second power feeder couples energy into the second slot 80 and resonates at the second slot 80 to form an electromagnetic field and radiate out. When the antenna module is used as a receiving antenna module, the direction of current flow is opposite to that of transmitting.

[0095] In addition, when installing, the second power feeding portion 73 (or the second power feeding portion 73 and the dielectric portion 60 as one body) can be inserted into the first extending metal frame from the front or rear side of the mobile communication terminal. In the two slots 80, one end of the thimble can be located inside the second slot 80 and electrically connected to the second power feeder 73, and the other end can be electrically connected to the impedance matching circuit.

[0096] FIG. 8 is a diagram showing the radiation pattern of the XZ section of the antenna module of the mobile communication terminal according to the second embodiment of the present invention, and FIG. 9 is a diagram showing the antenna module of the mobile communication terminal according to the second embodiment of the present invention. Radiation pattern of the XY section.

[0097] The opening of the second slot 80 is along the Z-axis direction, so the electromagnetic wave main lobe direction is along the +Z and -Z directions.

[0098] As can be seen from the radiation pattern diagrams in Figures 8 and 9, the main energy of the antenna module radiates to the screen and the back cover in two directions (+Z and -Z directions), and the energy on the XY plane is very small, so The main board and metal bracket on the XY plane have little effect on the antenna radiation performance, and there is no need to reserve a specific headroom area in this area.

[0099] According to an embodiment of the present invention, a gap is opened in the metal frame, and the coupling between the power feeding portion and the gap realizes energy transmission through the resonance of the radio frequency signal at the gap.

[0100] According to an embodiment of the present invention, a slot can be formed in at least one metal frame of the mobile communication terminal, so that a new antenna area can be opened up.

[0101] The antenna module according to the embodiment of the present invention is convenient for mass production and quick and convenient installation.

[0102] The above are only the preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.