Electronic equipment and middle frame assembly

Abstract

The invention relates to electronic equipment and a middle frame assembly. The electronic equipment comprises a floor, a radiator with two free ends and a feed source, the feed source is electrically connected with a feeding point in the radiator, the feeding point is located between the two free ends, and the radiator and the floor are arranged at an interval; the radiator is used for exciting the floor to generate excitation current of a target characteristic mode based on a feed signal output by the feed source so as to support a first working frequency band of the electronic equipment; and the radiator is also used for resonating in at least one wavelength mode under the excitation of a feed signal output by the feed source so as to support at least one second working frequency band of the electronic equipment. By adopting the scheme, the electronic equipment can support a plurality of working frequency bands at the same time, and the communication flexibility of the electronic equipment can be improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an electronic device and a middle frame assembly. Background Art

[0002] With the development of MIMO (Multiple Input Multiple Output) communication technology, the number of antennas in electronic devices has increased, making the layout space of antennas very tight, so it is necessary to miniaturize the antenna to save space. At present, miniaturized antennas can generally only work in a single frequency band, resulting in low flexibility in communication of electronic devices. Summary of the invention

[0003] Based on this, it is necessary to provide an electronic device and a middle frame assembly that can operate in multiple frequency bands in response to the above technical problems.

[0004] In a first aspect, the present application provides an electronic device, which includes a floor, a radiator having two free ends, and a feed source, wherein the feed source is electrically connected to a feeding point in the radiator, the feeding point is located between the two free ends, and the radiator is spaced apart from the floor; the radiator is used to excite the floor to generate an excitation current of a target characteristic mode based on a feeding signal output by the feed source to support a first operating frequency band of the electronic device; the radiator is also used to resonate in at least one wavelength mode under the excitation of the feeding signal output by the feed source to support at least one second operating frequency band of the electronic device.

[0005] In a second aspect, the present application further provides a middle frame assembly, which is arranged in the electronic device as described in the first aspect above, and the middle frame assembly further comprises: a substrate, including the feed source and a floor in the electronic device; a frame, which is arranged around the substrate, and the radiator in the electronic device is arranged on the frame. .

[0006] The above-mentioned electronic device and middle frame assembly include a floor, a radiator with two free ends and a feed source, the feed source is electrically connected to a feeding point in the radiator, the feeding point is located between the two free ends, and the radiator is spaced apart from the floor; the radiator can excite the floor to generate an excitation current of a target characteristic mode based on a feeding signal output by the feed source, thereby supporting the electronic device to operate in a first operating frequency band; the radiator can also resonate in at least one wavelength mode under the excitation of the feeding signal output by the feed source, thereby supporting the electronic device to operate in at least one second operating frequency band, so that the electronic device can operate in the first operating frequency band and at least one second operating frequency band under the excitation of the feeding signal output by the feed source, that is, the electronic device can support at least two operating frequency bands at the same time, thereby improving the flexibility of communication of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is a schematic diagram of an electronic device in one embodiment;

[0008] Figure 2 A schematic diagram of characteristic current distribution of a floor in one embodiment;

[0009] Figure 3 A schematic diagram of optimal placement of ICE and CCE in one embodiment;

[0010] Figure 4 is a schematic diagram of CCE placement in another embodiment;

[0011] Figure 5 is a structural block diagram of a tuning circuit of an electronic device in one embodiment;

[0012] Figure 6 is a schematic structural diagram of a first tuning circuit of an electronic device in one embodiment;

[0013] Figure 7 is a schematic structural diagram of a second tuning circuit of an electronic device in one embodiment;

[0014] Figure 8 is a schematic structural diagram of a third tuning circuit of an electronic device in one embodiment;

[0015] Fig. 9 is a simulation schematic diagram of an electronic device in one embodiment;

[0016] Fig.10 is a schematic diagram of an S parameter curve of an electronic device in one embodiment;

[0017] Fig.11 is a schematic diagram of antenna radiation efficiency of an electronic device in one embodiment;

[0018] Fig.12 A simulated current distribution diagram of an electronic device in the GPS L5 frequency band in one embodiment;

[0019] Fig.13 A schematic diagram of current distribution in the N78 frequency band of an electronic device in one embodiment;

[0020] Fig.14 A schematic diagram of current distribution in the WiFi5G frequency band of an electronic device in one embodiment;

[0021] Fig.15 FIG. 1 is a schematic diagram of the structure of a middle frame assembly in an embodiment.

[0022] Description of main component numbers:

[0023] Electronic device 100; floor 101; radiator 102; feed source 103;

[0024] A first inductor 601; a second inductor 602; a first capacitor 701;

[0025] A second capacitor 801; a third inductor 802;

[0026] Middle frame assembly 60. DETAILED DESCRIPTION

[0027] In order to make the purpose, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0028] 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", "axial", "radial", "circumferential" 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not 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 at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0033] As the number of antennas in electronic devices increases, the layout space of the antennas is very tight, so the antennas need to be miniaturized to save space. At present, miniaturized antennas can generally only work in a single frequency band, resulting in low flexibility in communication of electronic devices.

[0034] An embodiment of the present application provides an electronic device, which includes a radiator, which can operate in a first working frequency band and at least one second working frequency band under the excitation of a feeding signal output by a feed source, that is, the electronic device can support at least two working frequency bands at the same time, thereby improving the communication flexibility of the electronic device.

[0035] The "electronic device" (also referred to as "terminal" or "mobile terminal" or "electronic device") mentioned above includes a device for receiving / sending communication signals. It may also be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular phones; personal communication system (PCS) terminals that can combine cellular radiotelephones with data processing, fax and data communication capabilities; PDAs that can include radiotelephones, pagers, Internet / Intranet access, Web browsers, notepads, calendars and / or global positioning system (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers.

[0036] Please refer to Figure 1 , which shows a schematic diagram of an electronic device 100 provided in an embodiment of the present application. Figure 1As shown, the electronic device 100 includes a floor 101, a radiator 102 with two free ends, and a feed source 103, the feed source 103 is electrically connected to a feeding point a on the radiator, the feeding point a is located between the two free ends, and the radiator 102 is spaced apart from the floor 101.

[0037] The radiator 102 is used to excite the floor 101 to generate an excitation current of a target characteristic mode based on a feeding signal output by the feed source 103 , so as to support a first working frequency band of the electronic device 100 .

[0038] The radiator 102 is further configured to resonate in at least one wavelength mode under the excitation of the feeding signal output by the feed source 103 , so as to support at least one second operating frequency band of the electronic device 100 .

[0039] Optionally, the antenna module composed of the radiator 102 and the feed source 103 can be a mixture of one or more of a flexible printed circuit (FPC) antenna, a laser direct structuring (LDS) antenna, a print direct structuring (PDS) antenna, and a metal branch antenna. It can also be a mechanical design antenna (MDA) antenna designed using the metal insert of the electronic device 100 itself. Of course, the antenna module can also be other types of antennas, which will not be described in detail in the embodiments of the present application.

[0040] Among them, the radiator 102 is arranged at a distance from the floor 101, and the radiator 102 can be electrically connected to the feed source 103 through an antenna spring or other conductive elements. The radiator 102 excites the floor 101 to generate an excitation current according to the feeding signal output by the feed source 103. When the radiator 102 excites the floor 101 to generate an excitation current of a target characteristic mode, the electronic device 100 can obtain a higher radiation efficiency, so that the electronic device 100 operates in a first working frequency band. Optionally, the first working frequency band can be a low frequency band.

[0041] Optionally, at least one wavelength mode may include a half wavelength mode of the entire branch section of the radiator 102 or a three-quarter wavelength mode of the entire branch section of the radiator 102. The radiator 102 resonates in the above wavelength mode under the excitation of the feeding signal output by the feed source 103, thereby being able to support at least one second operating frequency band corresponding to the above wavelength mode. Optionally, the second operating frequency band may be a low frequency band or a high frequency band.

[0042] In the above embodiment, the electronic device includes a floor, a radiator with two free ends and a feed source, the feed source is electrically connected to a feeding point in the radiator, the feeding point is located between the two free ends, and the radiator is spaced apart from the floor; the radiator can excite the floor to generate an excitation current of a target characteristic mode based on a feeding signal output by the feed source, thereby supporting the electronic device to operate in a first operating frequency band; the radiator can also resonate in at least one wavelength mode under the excitation of the feeding signal output by the feed source, thereby supporting the electronic device to operate in at least one second operating frequency band, so that the electronic device can operate in the first operating frequency band and at least one second operating frequency band under the excitation of the feeding signal output by the feed source, that is, the electronic device can support at least two operating frequency bands at the same time, thereby improving the flexibility of communication of the electronic device.

[0043] In an optional embodiment of the present application, the target characteristic mode is a mode in which the proportion of the longitudinal current mode is greater than a preset threshold.

[0044] Among them, the characteristic mode is the inherent mode that characterizes the motherboard. By analyzing the characteristic mode of the motherboard, the feeding method and feeding position of the electronic device can be determined according to the boundary conditions. If the electronic device wants to obtain higher radiation efficiency, it needs to better stimulate the longitudinal current of the floor. Preferably, the target characteristic mode is the mode with the maximum longitudinal current mode ratio, that is, the longitudinal current mode corresponding to the target characteristic mode has the largest ratio. At this time, the electronic device can obtain higher radiation efficiency. The characteristic current of the target characteristic mode is as follows: Figure 2 shown.

[0045] In one embodiment, the radiator 102 is disposed at a position corresponding to a weak point area of ​​the excitation current of the floor in the target characteristic mode.

[0046] The weak area of ​​the excitation current is the area with the smallest excitation current in the target characteristic mode. Figure 2 The target feature pattern shown is Figure 3 As shown, the inductive coupling element (ICE) can be placed as shown in FIG. Figure 2 The target characteristic mode is excited at the maximum position of the current distribution shown, as Figure 2 As shown in the figure, the maximum current distribution is in the middle of the floor. Alternatively, a capacitive coupling element (CCE) can be placed at Figure 2 The target characteristic mode is excited at the minimum position of the current distribution shown in FIG. Figure 2As shown, the minimum position of the current distribution is the position of the four corners of the floor. Due to the large size of the ICE, the embodiment of the present application adopts CCE for feeding, that is, the radiator 102 is used as a CCE to excite the floor to generate an excitation current to support the target characteristic mode. Optionally, an inductor can be connected in series between the feed source 103 and the radiator 102, which can further reduce the size of the radiator 102 and make up for the lack of inductance caused by miniaturization.

[0047] In the embodiment of the present application, the floor is in a rectangular shape, and the radiator 102 is disposed in a surrounding area of ​​one of the four corners of the floor 101 .

[0048] When the floor is rectangular, the radiator 102 can be placed at any of the four corners of the floor 101. The shape of the radiator 102 can be a straight bar or a bent shape. The placement position between the radiator 102 and the floor 101 is as follows: Figure 4 At this time, in the electronic device 100, the floor 101 can be used as the main radiator of the electronic device 100 working in the first working frequency band, providing most of the radiation of the entire electronic device 100. The radiator 102 is equivalent to the radiation driving device of the electronic device 100, which is used to stimulate the floor 101 to work in the first working frequency band. The radiation energy of the radiator 102 accounts for a small proportion. At this time, reducing the size of the radiator 102 has little effect on the overall radiation performance of the electronic device 100, so it can achieve miniaturization of the electronic device 100 when working in the first working frequency band.

[0049] Optionally, the first operating frequency band is the GPS L5 frequency band. The GPS L5 frequency band has a lower frequency, and antennas of lower frequency bands are often larger in size. By setting the radiator and the floor, the electronic device can operate in the first operating frequency band, while reducing the size of the radiator.

[0050] In the above embodiment, the radiator excites the target characteristic mode of the floor to radiate, so that the size of the radiator can be reduced without changing the radiation intensity, thereby realizing the miniaturization of the radiator supporting the low frequency band.

[0051] In an optional embodiment of the present application, the second operating frequency band includes a first target operating frequency band and a second target operating frequency band; at least one wavelength mode includes a half wavelength mode and a three-quarter wavelength mode, wherein the half wavelength mode corresponds to supporting the first target operating frequency band, and the three-quarter wavelength mode corresponds to supporting the second target operating frequency band.

[0052] Optionally, the radiator 102 and the floor 101 can form a T-shaped antenna, and by exciting the half-wavelength mode of the entire branch section of the radiator 102 and the three-quarter wavelength mode of the entire branch section of the radiator 102, the electronic device 100 can be supported to operate in the first target operating frequency band and the second target operating frequency band. Optionally, the first target operating frequency band can be the N78 frequency band, and the second target operating frequency band can be the WiFi 5G frequency band. It should be pointed out that the electronic device 100 can also be made to operate in other operating frequency bands by matching the tuning circuit, adjusting the length of the radiator 102 or the position of the feeding point a. This application is illustrated by taking the N78 and WiFi 5G frequency bands as examples.

[0053] In one embodiment, Figure 5 As shown, the electronic device 100 also includes a tuning circuit, one end of the tuning circuit is electrically connected to the feed source 103, and the other end of the tuning circuit is electrically connected to the radiator 102. The tuning circuit includes a first tuning circuit 501, a second tuning circuit 502 and a third tuning circuit 503 that are electrically connected in sequence. The first tuning circuit 501 is used to tune the first working frequency band, the second tuning circuit 502 is used to tune the first target working frequency band, and the third tuning circuit 503 is used to tune the second target working frequency band.

[0054] like Figure 5 As shown, the first tuning circuit 501 is electrically connected to the radiator 102 through the feeding point a, the second tuning circuit 502 is electrically connected to the first tuning circuit 501 and the third tuning circuit 503 , and the third tuning circuit 503 is electrically connected to the feed source 103 .

[0055] Among them, please refer to Figure 6 The first tuning circuit 501 may include a first inductor 601 and a second inductor 602, wherein a first end of the first inductor 601 is electrically connected to a feeding point a, a second end of the first inductor 601 is connected to a first end of the second inductor 602, and a second end of the second inductor 602 is grounded.

[0056] Optionally, the first inductor 601 and the second inductor 602 can be fixed inductors or variable inductors, which is not limited in the embodiments of the present application. The radiator 102 tunes the first working frequency band by connecting the first inductor 601 in series and then connecting the second inductor 602 in parallel. The first working frequency band is the GPS L5 band as described above. At this time, the size of the first inductor 601 can be 1.5nH, and the size of the second inductor 602 can be 2.7nH. Optionally, when the first working frequency band is other frequency bands, the first inductor 601 and the second inductor 602 can use variable inductors. By adjusting the size of the first inductor 601 and the second inductor 602, the first tuning circuit 501 can tune the first working frequency band. At the same time, the first inductor 601 is connected in series between the feed source 103 and the radiator 102, which can further reduce the size of the radiator 102.

[0057] In the examples of this application, please refer to Figure 7 The second tuning circuit 502 includes a first capacitor 701 , and a first end of the first capacitor 701 is connected to a second end of the first inductor 601 .

[0058] Optionally, the first capacitor 701 can be a fixed capacitor or a variable capacitor, the second tuning circuit 502 is connected to the first tuning circuit 501, and the first capacitor 701 is connected in series with the first inductor 601 to tune the first target operating frequency band. As described above, the first target operating frequency band can be the N78 frequency band, and at this time, the size of the first capacitor 701 can be 2pF. Optionally, when the first target operating frequency band is other frequency bands, the first capacitor 701 can be a variable capacitor, and by adjusting the size of the first capacitor 701, the second tuning circuit 502 can tune the first target operating frequency band.

[0059] In the optional embodiment of this application, please refer to Figure 8 The third tuning circuit 503 includes a second capacitor 801 and a third inductor 802, the first end of the second capacitor 801 is connected to the second end of the first capacitor 701, the second end of the second capacitor 801 is grounded, the first end of the third inductor 802 is connected to the first end of the second capacitor 801, and the second end of the third inductor 802 is connected to the feed source 103.

[0060] Optionally, the second capacitor 801 can be a fixed capacitor or a variable capacitor, and the third inductor 802 can be a fixed inductor or a variable inductor, which is not limited in the embodiment of the present application. The third tuning circuit 503 is connected to the second tuning circuit 502, the second capacitor 801 is connected in parallel with the first capacitor 701, and then the third inductor 802 is connected in series, and the third inductor 802 is connected to the feed source 103. The third tuning circuit 503 is used to tune the second target operating frequency band. As described above, the second target operating frequency band can be a WiFi 5G band. At this time, the size of the second capacitor 801 can be 1pF, and the size of the third inductor 802 can be 2.7nH.

[0061] like Figure 8 , which is a schematic diagram of the structure of the tuning circuit included in the embodiment of the present application.

[0062] Optionally, the second target operating frequency band may also be other frequency bands. When the second target operating frequency band is other frequency bands, the second capacitor 801 and the third inductor 802 may adopt variable capacitors and variable inductors. By adjusting the size of the second capacitor 801 and the third inductor 802, the third tuning circuit can tune the second target operating frequency band.

[0063] In the above embodiment, without increasing the length of the original electronic device 100, the electronic device 100 can operate in the second working frequency band through the tuning circuit, so that the electronic device can cover multiple frequency bands, save the layout space of the antenna in the electronic device, and make the communication of the electronic device more flexible.

[0064] In one embodiment, the simulation model diagram of the electronic device 100 in the embodiment of the present application is as follows: Fig. 9 As shown above, the S parameter curve diagram of the electronic device 100 is as shown in Fig.10 As shown, Fig.10 Point 1 corresponds to the GPS L5 frequency band, point 2 corresponds to the N78 frequency band, and point 3 corresponds to the WiFi 5G frequency band. The antenna radiation efficiency of the electronic device 100 is as follows: Fig.11 As shown by Fig.11 It can be seen that the radiation efficiency of the electronic device 100 in the first working frequency band, the first target working frequency band and the second target working frequency band is relatively high.

[0065] In the embodiment of the present application, the electronic device 100 can operate in three frequency bands of GPS L5, N78 and WiFi5G through the above tuning circuit. Fig.12 This is a current distribution diagram of the simulated electronic device 100 when the electronic device 100 works in the GPS L5 frequency band. It can be seen from the diagram that the GPS L5 frequency band is mainly radiated by the excitation current on the floor 101 stimulated by the radiator 102. At this time, the current distribution on the floor 101 is relatively strong.

[0066] When the radiator 102 resonates in the half-wavelength mode, the radiator 102 includes a current reverse point and a current zero point. Fig.13 This is a current distribution diagram of an electronic device operating in the N78 frequency band. The current in the N78 frequency band is reversed once on the radiator 102, so there is a current zero point. At this time, the radiator 102 operates in a half-wavelength mode to support the above-mentioned N78 frequency band.

[0067] When the radiator 102 resonates in the three-quarter wavelength mode, the radiator 102 includes two current reverse points and two current zero points. Fig.14 This is a current distribution diagram of an electronic device operating in the WiFi5G frequency band. The current in the WiFi5G frequency band reverses twice on the radiator 102, so there are two current zero points. At this time, the radiator 102 operates in a three-quarter wavelength mode to support the above WiFi5G frequency band.

[0068] In one embodiment, the electronic device 100 may include a display screen for displaying information, a middle frame assembly for mounting the display screen on one side, a circuit board mounted on the middle frame assembly, a battery mounted on the middle frame assembly, and a back cover snap-fitted to the other side of the middle frame assembly.

[0069] The display screen may be a liquid crystal display (LCD) or an organic light emitting diode (OLED) display screen for displaying information and images.

[0070] The material of the middle frame assembly can be a metal such as magnesium alloy, aluminum alloy, stainless steel, etc. Of course, the material is not limited thereto, and can also be other materials. The middle frame assembly can be placed between the display screen and the back cover. The middle frame assembly can be used to carry the display screen. The middle frame assembly is buckled and connected with the back cover to form the outer contour of the electronic device 100, and a receiving cavity is formed inside. The receiving cavity can be used to accommodate electronic components such as cameras, circuit boards, circuits, processors, and various types of sensors in the electronic device.

[0071] The circuit main board is installed in the accommodating cavity and can be installed at any position in the accommodating cavity. The processor of the electronic device 100 can be set on the circuit main board. The circuit main board can also integrate one, two or more functional components such as a motor, a microphone, a speaker, a receiver, an earphone interface, a universal serial bus interface (USB interface), a camera, a distance sensor, an ambient light sensor, a gyroscope, etc. At the same time, the display screen can be electrically connected to the circuit main board.

[0072] The battery is installed in the accommodating cavity and can be installed at any position in the accommodating cavity. The battery can be electrically connected to the circuit mainboard so that the battery can power the electronic device 100. A power management circuit can be provided on the circuit mainboard. The power management circuit is used to distribute the voltage provided by the battery to various electronic components in the electronic device 100, such as a display screen.

[0073] The back cover can be made of the same material as the middle frame assembly, or other materials. The back cover can be integrally formed with the middle frame assembly. In some embodiments, the back cover can wrap the middle frame assembly and carry the display screen. The back cover can be formed with a rear camera hole, a fingerprint recognition module installation hole, and other structures.

[0074] Please refer to Fig.15 , Fig.15: is a schematic diagram of the structure of the middle frame assembly 60 in the electronic device 100 of the above embodiment. The middle frame assembly 60 may include a substrate 61 for carrying a display screen and a frame 62 arranged around the substrate 61. The substrate 61 is arranged opposite to the back cover. The frame 62 can be used to be snap-fitted with the back cover. That is, the substrate 61, the frame 62 and the back cover are arranged to form the above-mentioned accommodating cavity.

[0075] The substrate 61 may be a conductive metal, or other materials. A feed source and a floor in an electronic device may be disposed on the substrate 61. In some embodiments, the feed source may not be disposed on the substrate 61, but may be directly disposed on the circuit board.

[0076] The frame 62 may be a conductive metal, so the frame 62 may also be referred to as a "metal frame". Of course, the frame 62 may also be other materials. The middle frame assembly 60 and the back cover may form a housing assembly. The housing assembly may not be limited to the middle frame assembly 60 and the back cover. The housing assembly may be provided with a radiator by laminating, bonding, snapping, buckling, welding, or the like.

[0077] In some embodiments, the frame is disposed around the substrate, and the radiator in the electronic device is disposed on the frame. For example, the radiator 102 in the electronic device 100 can be disposed on the frame 62, that is, can be processed by the frame 62.

[0078] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0079] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An electronic device, characterized in that: The electronic device comprises a floor, a radiator having two free ends, and a feed source, wherein the feed source is electrically connected to a feeding point on the radiator, the feeding point is located between the two free ends, and the radiator is spaced apart from the floor; The radiator is used to excite the floor to generate an excitation current of a target characteristic mode based on the feeding signal output by the feed source, so as to support a first working frequency band of the electronic device; The radiator is also used to resonate in at least one wavelength mode under the excitation of the feeding signal output by the feed source to support at least one second working frequency band of the electronic device.

2. The electronic device according to claim 1, characterized in that: The second working frequency band includes a first target working frequency band and a second target working frequency band; The at least one wavelength mode includes a half wavelength mode and a three-quarter wavelength mode, wherein the half wavelength mode corresponds to supporting the first target operating frequency band, and the three-quarter wavelength mode corresponds to supporting the second target operating frequency band.

3. The electronic device according to claim 2, characterized in that: When the radiator resonates in the half-wavelength mode, the radiator includes a current reverse point and a current zero point.

4. The electronic device according to claim 2, characterized in that: When the radiator resonates in the three-quarter wavelength mode, the radiator includes two current reverse points and two current zero points.

5. The electronic device according to claim 2, characterized in that: The electronic device also includes a tuning circuit, one end of the tuning circuit is electrically connected to the feed source, and the other end of the tuning circuit is electrically connected to the radiator. The tuning circuit includes a first tuning circuit, a second tuning circuit and a third tuning circuit that are electrically connected in sequence. The first tuning circuit is used to tune the first working frequency band, the second tuning circuit is used to tune the first target working frequency band, and the third tuning circuit is used to tune the second target working frequency band.

6. The electronic device according to claim 5, characterized in that: The first tuning circuit includes a first inductor and a second inductor, a first end of the first inductor is electrically connected to the feeding point, a second end of the first inductor is connected to a first end of the second inductor, and a second end of the second inductor is grounded.

7. The electronic device according to claim 6, characterized in that: The second tuning circuit includes a first capacitor, wherein a first end of the first capacitor is connected to a second end of the first inductor.

8. The electronic device according to claim 7, characterized in that: The third tuning circuit includes a second capacitor and a third inductor, the first end of the second capacitor is connected to the second end of the first capacitor, the second end of the second capacitor is grounded, the first end of the third inductor is connected to the first end of the second capacitor, and the second end of the third inductor is connected to the feed source.

9. The electronic device according to claim 1, characterized in that: The target characteristic mode is a mode in which the proportion of the longitudinal current mode is greater than a preset threshold.

10. The electronic device according to claim 9, characterized in that: The radiator is disposed at a position corresponding to a weak point area of ​​the excitation current of the floor in the target characteristic mode.

11. The electronic device according to claim 9, characterized in that: The floor is rectangular in shape, and the radiator is disposed in a surrounding area of ​​one of the four corners of the floor.

12. The electronic device according to any one of claims 1 to 11, characterized in that: The first operating frequency band is the GPSL5 frequency band.

13. The electronic device according to any one of claims 2 to 8, characterized in that: The first target operating frequency band is the N78 frequency band, and the second target operating frequency band is the WiFi 5G frequency band.

14. A middle frame assembly, characterized in that: The middle frame assembly is applied to the electronic device according to any one of claims 1 to 13, and the middle frame assembly further includes: a substrate, including the feed and the floor in the electronic device; A frame is arranged around the substrate, and a radiator in the electronic device is arranged on the frame.

Images