Antenna module and terminal equipment

Abstract

The invention relates to an antenna module and terminal equipment, and the antenna module comprises a first radiator which is provided with a first upper frame point; the first antenna feed circuit and the second antenna feed circuit are electrically connected with the first upper frame point; the isolation circuit is electrically connected with the first upper frame point and the first antenna feed circuit and is configured to isolate a signal on the second antenna feed circuit when the first antenna feed circuit is in a working state; and when the second antenna feed circuit is in a working state, the signal on the first antenna feed circuit is isolated. According to the embodiment of the invention, the number of upper frames of the antenna can be reduced, the occupied space of the antenna module in the terminal equipment can be reduced, and the cost is further reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to an antenna module and a terminal device. Background Art

[0002] With the development of mobile communications, terminal devices have become basically popular in life. Moreover, as users have more and more requirements for the use of terminal devices, on the basis of pursuing signal strength, the requirements for the appearance, standby time and comprehensive functions of terminal devices have also increased.

[0003] At present, due to the popularity of the fifth generation mobile communication technology (5G), the number of antennas in terminal devices such as mobile phones has increased significantly, so the difficulty of antenna design has further increased. In response to this problem, how to integrate antennas with more frequency bands in a smaller space and realize the miniaturization of multi-band antennas is becoming increasingly important for the development of current terminal devices. Summary of the invention

[0004] In order to overcome the problems existing in the related art, the present disclosure provides an antenna module and a terminal device, which can not only reduce the number of upper frames of the antenna, but also reduce the space occupied by the antenna module in the terminal device, thereby further reducing costs.

[0005] According to a first aspect of an embodiment of the present disclosure, an antenna module is provided, comprising at least:

[0006] A first radiator having a first upper frame point;

[0007] A first antenna feeding circuit and a second antenna feeding circuit are both electrically connected to the first upper frame point;

[0008] An isolation circuit electrically connects the first upper frame point and the first antenna feed circuit, and is configured to isolate the signal on the second antenna feed circuit when the first antenna feed circuit is in an operating state; and to isolate the signal on the first antenna feed circuit when the second antenna feed circuit is in an operating state.

[0009] In some embodiments, the antenna module further includes:

[0010] An impedance tuning circuit has one end connected to a connection line between the first upper frame point and the second antenna feed circuit and the other end grounded, and is configured to tune the impedance on the connection line between the second antenna feed circuit and the first upper frame point.

[0011] In some embodiments, the impedance tuning circuit comprises:

[0012] a first impedance component connected to a connection line between the first upper frame point and the second antenna feeding circuit;

[0013] A first switch circuit, one end of which is connected to a connection line between the first impedance component and the second antenna feeding circuit, and the other end of which is grounded;

[0014] When the first switch circuit is in different working states, the impedance of the connection line between the second antenna feeding circuit and the first upper frame point is different.

[0015] In some embodiments, there are multiple first switch circuits; the multiple first switch circuits are arranged in parallel, and each of the first switch circuits includes at least one first switch component and at least one second impedance component.

[0016] In some embodiments, the first radiator has a second upper frame point spaced apart from the first upper frame point; and the antenna module further includes:

[0017] The aperture tuning circuit has one end connected to the second upper frame point and the other end grounded, and is configured to tune the radiation length of the first radiator.

[0018] In some embodiments, the aperture tuning circuit comprises:

[0019] a first capacitor component connected to the second upper frame point;

[0020] A second switch circuit, one end of which is connected to the first capacitor component and the other end of which is grounded;

[0021] When the second switch circuit is in different working states, the radiation length of the first radiator is different.

[0022] In some embodiments, there are multiple second switch circuits; the multiple second switch circuits are arranged in parallel, and each of the second switch circuits includes at least one second switch component and at least one second capacitor component.

[0023] In some embodiments, the antenna module further includes:

[0024] a second radiator, spaced apart from the first radiator and having a third upper frame point away from the first radiator;

[0025] A third antenna feeding circuit connected to the third upper frame point;

[0026] The center frequency covered by the third antenna feeding circuit is greater than the center frequency covered by the first antenna feeding circuit.

[0027] In some embodiments, the second radiator further has a fourth upper frame point close to the first radiator; and the antenna module further includes:

[0028] a fourth antenna feeding circuit, connected to the fourth upper frame point;

[0029] The center frequency covered by the fourth antenna feeding circuit is smaller than the center frequency covered by the third antenna feeding circuit.

[0030] In some embodiments, the second radiator includes a first radiating branch having the third upper frame point and a second radiating branch having a fourth upper frame point;

[0031] A fifth upper frame point is provided at an angle formed by connecting the first radiation branch node and the second radiation branch node;

[0032] The antenna module also includes:

[0033] The third impedance component has one end connected to the fifth upper frame point and the other end grounded.

[0034] In some embodiments, the second radiation branch has a sixth upper frame point between the fifth upper frame point and the third upper frame point; and the antenna module further includes:

[0035] A fourth impedance component has one end connected to the sixth upper frame point and the other end grounded.

[0036] In some embodiments, the antenna module further includes:

[0037] The circuit board is provided with a plurality of debugging capacitor positions, and different debugging capacitor positions contain different capacitor elements;

[0038] The third impedance component includes at least one capacitive element accommodated in the debugging capacitor position.

[0039] In some embodiments, the antenna module further includes a third radiator; the second radiator is arranged between the first radiator and the third radiator;

[0040] The third radiator has a seventh upper frame point;

[0041] a fifth antenna feeding circuit, connected to the seventh upper frame point;

[0042] The center frequency covered by the fifth antenna feeding circuit is smaller than the center frequency covered by the fourth antenna feeding circuit.

[0043] In some embodiments, the first antenna feed circuit transmits near-field communication signals, the second antenna feed circuit, the third antenna feed circuit and the fifth antenna feed circuit respectively transmit cellular mobile communication signals of different frequency bands, and the fourth antenna feed circuit transmits navigation and positioning signals.

[0044] In some embodiments, the shape of the first radiator, the shape of the second radiator, and the shape of the third radiator are all L-shaped.

[0045] In some embodiments, the isolation circuit comprises:

[0046] an inductor component connected to a connection line between the first upper frame point and the first antenna feeding circuit;

[0047] A third capacitor component has one end connected to the connection line between the inductor component and the first antenna feeding circuit, and the other end grounded.

[0048] According to a second aspect of the present disclosure, a terminal device is provided, comprising at least:

[0049] Conductive housing;

[0050] The antenna module as described in the first aspect;

[0051] Wherein, a portion of the first conductive edge in the conductive shell is reused as the first radiator of the antenna module.

[0052] In some embodiments, the conductive housing further includes a second conductive edge disposed adjacent to the first conductive edge;

[0053] Another part of the first conductive edge and a part of the second conductive edge are multiplexed as the second radiator of the antenna module; another part of the second conductive edge is multiplexed as the third radiator of the antenna module.

[0054] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0055] An antenna module and a terminal device are provided in an embodiment of the present disclosure, wherein the antenna module comprises: a first radiator having a first upper frame point; a first antenna feed circuit and a second antenna feed circuit, both electrically connected to the first upper frame point; an isolation circuit, electrically connecting the first upper frame point and the first antenna feed circuit, and configured to isolate a signal on the second antenna feed circuit when the first antenna feed circuit is in an operating state; and to isolate a signal on the first antenna feed circuit when the second antenna feed circuit is in an operating state. In this way, the antenna module proposed in the present disclosure electrically connects the first antenna feeding circuit and the second antenna feeding circuit at the first upper frame point of the first radiator, so that the first radiator realizes co-feeding of the first antenna and the second antenna at the first upper frame point to radiate the wireless signal of the first antenna and the wireless signal of the second antenna, thereby not only reducing the number of upper frames of the antenna, but also reducing the space occupied by the antenna module in the terminal device, further reducing the cost; and, when the first antenna feeding circuit is in a working state, the signal on the second antenna feeding circuit is isolated by an isolation circuit. Similarly, when the second antenna feeding circuit is in a working state, the signal on the first antenna feeding circuit is isolated by an isolation circuit, thereby reducing the influence of the second antenna on the antenna performance of the first antenna, thereby improving the signal receiving and transmitting performance of the antenna module.

[0056] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0058] Figure 1 is a schematic diagram of the structure of an antenna module provided according to an exemplary embodiment Figure 1 .

[0059] Figure 2 The figure is a schematic diagram of a network environment for wireless communication provided according to an exemplary embodiment.

[0060] Figure 3 is a schematic diagram of the structure of an antenna module provided according to an exemplary embodiment Figure 2 .

[0061] Figure 4 is a schematic diagram of the structure of an antenna module provided according to an exemplary embodiment Figure 3 .

[0062] Figure 5 is a schematic diagram of the structure of an antenna module provided according to an exemplary embodiment Figure 4 .

[0063] Figure 6 is a schematic structural diagram of a traditional antenna module provided according to an exemplary embodiment.

[0064] Figure 7 The diagram is a schematic structural diagram of a terminal device according to an exemplary embodiment.

[0065] Figure 8 The present invention is a structural block diagram of a terminal device according to an exemplary embodiment. DETAILED DESCRIPTION

[0066] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure. Instead, they are merely examples of structures and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0067] In related technologies, due to the popularity of 5G, the number of antennas in terminal devices such as mobile phones has increased significantly, making antenna design more difficult. In response to this problem, how to integrate antennas with more frequency bands in a smaller space and realize multi-band miniaturization of antennas is becoming increasingly important for the development of current terminal devices.

[0068] Based on this, an embodiment of the present disclosure provides an antenna module. Figure 1 is a schematic diagram of the structure of an antenna module provided according to an exemplary embodiment Figure 1 ,like Figure 1 As shown, the antenna module 10 may include:

[0069] The first radiator 11 has a first upper frame point 111;

[0070] A first antenna feeding circuit 112 and a second antenna feeding circuit 113 are both electrically connected to the first upper frame point 111;

[0071] The isolation circuit 12 is electrically connected to the first upper frame point 111 and the first antenna feed circuit 112, and is configured to isolate the signal on the second antenna feed circuit 113 when the first antenna feed circuit 112 is in an operating state; and to isolate the signal on the first antenna feed circuit 112 when the second antenna feed circuit 113 is in an operating state.

[0072] The antenna module provided in the embodiment of the present disclosure can be placed in a terminal device. The antenna module can be used for receiving and transmitting wireless signal frequencies. When the antenna module is used to transmit wireless signals, the terminal device can perform wireless signal transmission, such as wireless communication or wireless charging.

[0073] Specifically, the terminal device where the antenna module provided by the embodiment of the present disclosure is located is active in an actual wireless communication scenario.

[0074] Exemplarily, the wireless communication scenario may be a multi-device scenario. For example, in a scenario of configuring a network for a smart device, the network configuration for the smart device is completed through the interaction of multiple machines such as a router and different terminal devices.

[0075] See also Figure 2 , the wireless communication network environment 200 includes: electronic devices 201A and 201B, wireless LAN (Wireless Fidelity, WiFi) access point 202, cellular base station 203 and network 204. Here, when the electronic devices 201A and 201B use the wireless LAN or cellular network to send and receive wireless signals, the WiFi and cellular networks can be switched through the information transmission between the WiFi access point 202 and the cellular base station 203 and the network 204; according to the present disclosure, Figure 2 In the network environment shown, when an instruction is received for the cellular circuit to perform wireless transmission, the WiFi connection is stopped; when an instruction is received to stop the cellular circuit from performing wireless transmission, the WiFi connection is restored.

[0076] The antenna module provided by the present invention can improve the radiation frequency band of the wireless signal and optimize the performance of wireless communication in the field of wireless signal transmission by changing the frequency of the wireless signal received and transmitted after coupling.

[0077] In the disclosed embodiment, the first radiator can radiate both cellular mobile communication signals and near field communication (NFC) signals.

[0078] The first antenna feeding circuit may be a feeding circuit for the first radiator to radiate a first type of wireless signal; for example, the first antenna feeding circuit may be a feeding circuit for an NFC antenna. The second antenna feeding circuit may be a feeding circuit for the first radiator to radiate a second type of wireless signal, for example, the second antenna feeding circuit may be a feeding circuit for a low frequency (LB), middle high frequency (MHB) or new radio (NR) antenna.

[0079] Correspondingly, the first antenna feeding circuit can transmit near field communication signals, and the second antenna feeding circuit can transmit cellular mobile communication signals in low, medium, high and other frequency bands.

[0080] For example, the first radiator may be a LB, MHB or NR antenna; meanwhile, the first radiator may also be an NFC antenna.

[0081] Here, the center frequency covered by the first antenna feeding circuit may be smaller than the center frequency covered by the second antenna feeding circuit; for example, the center frequency covered by the first antenna feeding circuit may be 13.56 MHz, and the center frequency covered by the second antenna feeding circuit may be 700 MHz.

[0082] The first upper frame point may be a connection point between the isolation circuit and the first radiator.

[0083] It should be noted that the connection point between the first antenna feeding circuit and the first radiator is the feeding point of the first antenna, that is, the first upper frame point can be the feeding point of the first antenna; the connection point between the second antenna feeding circuit and the first radiator is the feeding point of the second antenna, that is, the first upper frame point can also be the feeding point of the second antenna. In other words, the feeding point of the first antenna and the feeding point of the second antenna are shared at the first upper frame point.

[0084] The isolation circuit may be a circuit for isolating a signal transmitted on the first antenna feeding circuit from a signal transmitted on the second antenna feeding circuit.

[0085] In one embodiment of the present disclosure, Figure 1 As shown, the isolation circuit 12 includes:

[0086] an inductor component 121 connected to a connection line between the first upper frame point 111 and the first antenna feeding circuit 112;

[0087] The third capacitor component 122 has one end connected to the connection line between the inductor component 121 and the first antenna feeding circuit 112 , and the other end grounded.

[0088] In this way, by connecting an inductor component in series on the connection line between the first upper frame point and the first antenna feeding circuit, the influence of the second antenna on the antenna performance of the first antenna can be isolated, and the aperture of the second antenna can be tuned to improve the low-frequency band performance of the second antenna; at the same time, by connecting a third capacitor component in parallel on the connection line between the first upper frame point and the first antenna feeding circuit, the low-frequency band performance of the second antenna can also be improved.

[0089] Among them, the above-mentioned inductor component may include one inductor element or multiple inductor elements, and the inductance value range of the inductor element may be 20 nanohenry (nH) to 100nH; the above-mentioned third capacitor component may include one capacitor element or multiple capacitor elements, and the capacitance value range of the capacitor element may be 5 picofarads (pF) to 50pF.

[0090] For example, the isolation circuit may include a series inductor and a parallel capacitor. The inductance value of the series inductor needs to use the large inductance value of the package 0603, which is used to isolate the signal on the second antenna feed circuit when the first antenna feed circuit is in operation; the parallel capacitor is used to improve the performance of the low-frequency signal covered by the second antenna feed circuit.

[0091] In the embodiment of the present disclosure, the above-mentioned isolation circuit can isolate the signal on the second antenna feeding circuit when the first antenna feeding circuit is in an operating state, and isolate the signal on the first antenna feeding circuit when the second antenna feeding circuit is in an operating state through the characteristics of the inductance component and the third capacitance component in the circuit, thereby reducing the impact of the second antenna on the antenna performance of the first antenna and achieving compatibility between the wireless signal of the first antenna radiated by the first radiator and the wireless signal of the second antenna.

[0092] An antenna module provided by an embodiment of the present disclosure includes: a first radiator having a first upper frame point; a first antenna feed circuit and a second antenna feed circuit, both electrically connected to the first upper frame point; an isolation circuit, electrically connecting the first upper frame point and the first antenna feed circuit, and configured to isolate a signal on the second antenna feed circuit when the first antenna feed circuit is in an operating state; and to isolate a signal on the first antenna feed circuit when the second antenna feed circuit is in an operating state. In this way, the antenna module proposed in the present disclosure electrically connects the first antenna feeding circuit and the second antenna feeding circuit at the first upper frame point of the first radiator, so that the first radiator realizes co-feeding of the first antenna and the second antenna at the first upper frame point to radiate the wireless signal of the first antenna and the wireless signal of the second antenna, thereby not only reducing the number of upper frames of the antenna, but also reducing the space occupied by the antenna module in the terminal device, further reducing the cost; and, when the first antenna feeding circuit is in a working state, the signal on the second antenna feeding circuit is isolated by an isolation circuit. Similarly, when the second antenna feeding circuit is in a working state, the signal on the first antenna feeding circuit is isolated by an isolation circuit, thereby reducing the influence of the second antenna on the antenna performance of the first antenna, thereby improving the signal receiving and transmitting performance of the antenna module.

[0093] Figure 3 is a schematic diagram of the structure of an antenna module provided according to an exemplary embodiment Figure 2 ,like Figure 3 As shown, the antenna module provided by the embodiment of the present disclosure has Figure 1 Other components are further added to the antenna module shown, for example, an impedance tuning circuit and an aperture tuning circuit.

[0094] like Figure 3 As shown, the antenna module 10 may further include:

[0095] The impedance tuning circuit 13 has one end connected to the connection line between the first upper frame point 111 and the second antenna feeding circuit 113 and the other end grounded, and is configured to tune the impedance on the connection line between the second antenna feeding circuit 113 and the first upper frame point 111.

[0096] In this way, an impedance tuning circuit can be set between the first upper frame point and the second antenna feeding circuit to tune the impedance on the connecting line between the second antenna feeding circuit and the first upper frame point, thereby achieving impedance matching between the first radiator and the second antenna feeding circuit to reduce the loss caused by impedance mismatch.

[0097] The impedance tuning circuit may be a circuit for tuning the impedance of a connection line between the second antenna feeding circuit and the first upper frame point.

[0098] It can be understood that the first electrical signal output by the second antenna feed circuit can be transmitted to the first radiator through the connection line between the second antenna feed circuit and the first upper frame point, so that the first radiator radiates the wireless signal of the second antenna under the excitation of the first electrical signal; or, the second electrical signal obtained by the first radiator converting the wireless signal of the second antenna can be transmitted to the second antenna feed circuit through the connection line between the second antenna feed circuit and the first upper frame point. At this time, during the transmission of the first electrical signal or the second electrical signal, the impedance tuning circuit can tune the impedance on the connection line between the second antenna feed circuit and the first upper frame point to reduce the loss caused by the mismatch between the impedance of the first radiator and the impedance of the second antenna feed circuit, thereby improving the transmission power of the first electrical signal or the second electrical signal.

[0099] In some embodiments, Figure 3 As shown, the impedance tuning circuit 13 includes:

[0100] A first impedance component 131 connected to a connection line between the first upper frame point 111 and the second antenna feeding circuit 113;

[0101] A first switch circuit 132, one end of which is connected to the connection line between the first impedance component 131 and the second antenna feeding circuit 113, and the other end of which is grounded;

[0102] When the first switch circuit 132 is in different working states, the impedance of the connection line between the second antenna feeding circuit 113 and the first upper frame point 111 is different.

[0103] In this way, the impedance of the connection line between the second antenna feeding circuit and the first upper frame point can be made different by putting the first switch circuit in the impedance tuning circuit in different working states, thereby achieving impedance matching between the first radiator and the second antenna feeding circuit.

[0104] The first impedance component may be a capacitor element; for example, the first impedance component may be a 2.4 pF capacitor element. The first switch circuit may be a circuit capable of switching the connection line between the second antenna feeding circuit and the first upper frame point to connect different impedance components.

[0105] Here, the first switch circuit being in different working states may include: the first switch circuit being in a closed state, or the first switch circuit being in an open state.

[0106] In one embodiment of the present disclosure, Figure 3 As shown, there are multiple first switch circuits 132; the multiple first switch circuits 132 are arranged in parallel, and each of the first switch circuits 132 includes at least one first switch component 133 and at least one second impedance component 134.

[0107] In this way, different first switch components can be used to control different first switch circuits to be turned on and switch different second impedance components, so that the impedance on the connection line between the second antenna feeding circuit and the first upper frame point is different, thereby achieving impedance matching between the first radiator and the second antenna feeding circuit.

[0108] The first switch component may be a mechanical switch or a signal control switch, which is not limited in the embodiments of the present disclosure. The second impedance component may include electronic components such as inductors and capacitors; for example, the second impedance component may include a 1.8pF capacitor, a 2.2nH inductor, a 3.3nH inductor, or a 5.1nH inductor.

[0109] It can be understood that the above-mentioned second impedance component is connected in series with the above-mentioned first switch component on each first switch circuit, and the size of the above-mentioned second impedance component connected to each above-mentioned first switch component is different, so that when different first switch components are switched to a closed state, the impedance on the connection line between the second antenna feeding circuit and the first upper frame point can be different.

[0110] It should be noted that the number of the first switch components and the second impedance components can be set according to actual application conditions, and the embodiment of the present disclosure does not limit this. For example, the number of the first switch components and the second impedance components can be 4, 5 or 6, etc.

[0111] Exemplarily, the above-mentioned first switch components have two states of "closed" and "open"; when one of the first switch components is in the closed state, the other first switch components are in the open state, the first radiator is electrically connected to the second impedance component corresponding to the first switch component in series, and the resonant frequency corresponding to the first radiator shifts to low frequency or high frequency.

[0112] In some embodiments, Figure 3 As shown, the first radiator 11 has a second upper frame point 114 spaced apart from the first upper frame point 111; the antenna module 10 may further include:

[0113] The aperture tuning circuit 14 has one end connected to the second upper frame point 114 and the other end grounded, and is configured to tune the radiation length of the first radiator 11 .

[0114] In this way, the radiation length of the first radiator can be tuned by setting an aperture tuning circuit between the second upper frame point and the ground wire, so that the effective length of the second antenna can be adjusted and the resonance point can be switched to the required supported working frequency band to improve the radiation efficiency of the first radiator.

[0115] The aperture tuning circuit may be a circuit for tuning the radiation length of the first radiator.

[0116] It can be understood that the embodiments of the present disclosure can make the radiation length of the first radiator different according to the different impedance elements connected in the above-mentioned aperture tuning circuit, so that the first radiator can radiate wireless signals of different frequency bands to achieve coverage of full-band wireless signals.

[0117] In some embodiments, Figure 3 As shown, the aperture tuning circuit 14 includes:

[0118] A first capacitor component 141 connected to the second upper frame point 114;

[0119] A second switch circuit 142, one end of which is connected to the first capacitor component 141, and the other end of which is grounded;

[0120] When the second switch circuit 142 is in different working states, the radiation length of the first radiator 11 is different.

[0121] In this way, the second switch circuit in the aperture tuning circuit can be in different working states to make the radiation length of the first radiator different, thereby enabling the first radiator to radiate full-band wireless signals.

[0122] The first capacitor component may be one capacitor element or multiple capacitor elements; for example, the first capacitor component may be a 33pF capacitor element. The second switch circuit may be a circuit capable of adjusting different radiation lengths of the first radiator.

[0123] Here, the second switch circuit being in different working states may include: the second switch circuit being in a closed state, or the second switch circuit being in an open state.

[0124] In one embodiment of the present disclosure, Figure 3 As shown, there are multiple second switch circuits 142; the multiple second switch circuits 142 are arranged in parallel, and each of the second switch circuits 142 includes at least one second switch component 143 and at least one second capacitor component 144.

[0125] In this way, different second switch components can be used to control different second switch circuits to be turned on, and different second capacitor components can be switched, so that the radiation length of the first radiator is different, thereby improving the radiation efficiency of the first radiator.

[0126] The second switch component may also be a mechanical switch or a signal control switch, which is not limited in the embodiments of the present disclosure. The second capacitor component may be a capacitor element or a plurality of capacitor elements; for example, the second capacitor component may be a 0.5pF capacitor element, a 1.5pF capacitor element or a 1.8pF capacitor element.

[0127] It can be understood that the second capacitor component and the second switch component are connected in series in each second switch circuit, and the second capacitor components connected to each second switch component are of different sizes, so that when different second switch components are switched to a closed state, the radiation length of the first radiator can be different.

[0128] It should be noted that the number of the second switch components and the second capacitor components can be set according to the actual application situation, and the embodiment of the present disclosure does not limit it. For example, the number of the second switch components can be 4, and the number of the second capacitor components can be 3; or the number of the second switch components and the second capacitor components can both be 4; and so on.

[0129] Exemplarily, the second switch component has two states of "closed" and "open"; when one of the second switch components is in the closed state, the other second switch components are in the open state, the first radiator is electrically connected to the second capacitor component corresponding to the second switch component in series, and the resonant frequency corresponding to the first radiator shifts to low frequency or high frequency.

[0130] Figure 4is a schematic diagram of the structure of an antenna module provided according to an exemplary embodiment Figure 3 ,like Figure 4 As shown, the antenna module provided by the embodiment of the present disclosure has Figure 3 Other components are further added to the antenna module shown, for example, a second radiator, a third antenna feeding circuit and a fourth antenna feeding circuit.

[0131] like Figure 4 As shown, the antenna module 10 may further include:

[0132] The second radiator 15 is spaced apart from the first radiator 11 and has a third upper frame point 151 away from the first radiator 11;

[0133] A third antenna feeding circuit 152, connected to the third upper frame point 151;

[0134] The center frequency covered by the third antenna feeding circuit 152 is greater than the center frequency covered by the first antenna feeding circuit 112 .

[0135] The second radiator can radiate both cellular mobile communication signals and navigation positioning signals; the third antenna feeding circuit can be a feeding circuit for the second radiator to radiate the first type of wireless signal. For example, the third antenna feeding circuit can be a feeding circuit for an MHB antenna; accordingly, the second radiator can be an MHB antenna. The third upper frame point can be a connection point between the third antenna feeding circuit and the second radiator, that is, a feeding point of the third antenna.

[0136] Here, the space between the second radiator and the first radiator may be filled with insulating material to provide a clearance between the first radiator and the second radiator, so that the first radiator and the second radiator can radiate different wireless signals respectively.

[0137] Exemplarily, when the first antenna feeding circuit is a feeding circuit of an NFC antenna and the third antenna feeding circuit is a feeding circuit of an MHB antenna, the center frequency covered by the third antenna feeding circuit may be 2.2 gigahertz (GHz), and the center frequency covered by the first antenna feeding circuit may be 13.56 MHz.

[0138] In some embodiments, Figure 4 As shown, the second radiator 15 further has a fourth upper frame point 153 close to the first radiator 11; the antenna module 10 may further include:

[0139] A fourth antenna feeding circuit 154 connected to the fourth upper frame point 153;

[0140] The center frequency covered by the fourth antenna feeding circuit 154 is smaller than the center frequency covered by the third antenna feeding circuit 152 .

[0141] In this way, the specific absorption rate (SAR) detection of the antenna module can be achieved by setting the fourth upper frame point of the fourth antenna feeding circuit between the third upper frame point and the first upper frame point of the third antenna feeding circuit.

[0142] Among them, the above-mentioned fourth antenna feeding circuit can be a feeding circuit for the above-mentioned second radiator to radiate the second wireless signal; for example, the above-mentioned fourth antenna feeding circuit can be a feeding circuit for the Global Positioning System (GPS) L5 antenna, and accordingly, the above-mentioned second radiator can be a GPS antenna.

[0143] Here, the fourth upper frame point may be a connection point between the fourth antenna feeding circuit and the second radiator, that is, a feeding point of the fourth antenna; the fourth upper frame point may be located between the first upper frame point and the third upper frame point.

[0144] Exemplarily, when the third antenna feeding circuit is a feeding circuit of an MHB antenna and the fourth antenna feeding circuit is a feeding circuit of a GPS L5 antenna, the center frequency covered by the third antenna feeding circuit may be 2.2 gigahertz (GHz), and the center frequency covered by the fourth antenna feeding circuit may be 1.178 GHz.

[0145] In one embodiment of the present disclosure, Figure 4 As shown, the second radiator 15 includes a first radiating branch 155 having the third upper frame point 151 and a second radiating branch 156 having a fourth upper frame point 153;

[0146] A fifth upper frame point 157 is provided at an angle formed by connecting the first radiation branch 155 and the second radiation branch 156;

[0147] The antenna module 10 may further include:

[0148] The third impedance component 16 has one end connected to the fifth upper frame point 157 and the other end grounded.

[0149] In this way, by connecting the third impedance component at the angle formed by the first radiation branch and the second radiation branch, it can not only be used as the lower point of the fourth antenna, but also improve the isolation between the third antenna and the fourth antenna.

[0150] The arrangement direction of the first radiation branch may be different from the arrangement direction of the first radiator, and the arrangement direction of the second radiation branch may be the same as the arrangement direction of the first radiator.

[0151] The third impedance component may be a capacitor element; for example, the third impedance component may be a 33 pF capacitor element.

[0152] Here, the fifth upper frame point may be a connection point between the third impedance component and the second radiator; the fifth upper frame point may be located between the third upper frame point and the fourth upper frame point.

[0153] It should be noted that the angle formed by the connection of the first radiation branch and the second radiation branch can be set according to the actual application situation, and the embodiment of the present disclosure is not limited. For example, the angle formed by the connection of the first radiation branch and the second radiation branch can be 45 degrees, 60 degrees or 90 degrees.

[0154] In one embodiment of the present disclosure, Figure 4 As shown, the second radiation branch 156 has a sixth upper frame point 158 ​​between the fifth upper frame point 157 and the third upper frame point 151; the antenna module 10 may further include:

[0155] The fourth impedance component 17 has one end connected to the sixth upper frame point 158 ​​and the other end grounded.

[0156] Thus, by connecting the fourth impedance component between the fifth upper frame point and the fourth upper frame point of the second radiation branch, it can not only be used as the lower point of the third antenna, but also further improve the isolation between the third antenna and the fourth antenna.

[0157] The fourth impedance component may also be a capacitor element; for example, the fourth impedance component may also be a 33pF capacitor element.

[0158] Here, the sixth upper frame point may be a connection point between the fourth impedance component and the second radiator; the sixth upper frame point may be located between the third upper frame point and the fifth upper frame point.

[0159] It should be noted that the specific number of the third impedance component and the fourth impedance component can be set according to the actual application situation, and the embodiment of the present disclosure is not limited. For example, the third impedance component and the fourth impedance component can both be 1, 2 or 3.

[0160] In some embodiments, the antenna module may further include:

[0161] The circuit board is provided with a plurality of debugging capacitor positions, and different debugging capacitor positions contain different capacitor elements;

[0162] The third impedance component includes at least one capacitive element accommodated in the debugging capacitor position.

[0163] In this way, multiple debugging capacitor positions can be set on the circuit board to be able to freely adjust the equivalent length of the fourth antenna at the fifth upper frame point, thereby increasing the debugging freedom of the third and fourth antennas while also increasing the freedom of background capacitance debugging for SAR detection.

[0164] The circuit board may be a printed circuit board (PCB); and the debugging capacitor position may accommodate capacitor elements of different sizes.

[0165] It can be understood that when the background capacitance of SAR detection needs to be debugged, capacitance elements of different sizes at the debugging capacitance position can be connected at the position of the third impedance component to achieve the degree of freedom of debugging the background capacitance of SAR detection.

[0166] Similarly, the fourth impedance component may also include at least one of the above-mentioned capacitance elements accommodated in the above-mentioned debugging capacitance position, so as to be able to freely adjust the equivalent length of the third antenna at the sixth upper frame point, thereby increasing the freedom of debugging the third antenna and the fourth antenna while also increasing the freedom of background capacitance debugging for SAR detection.

[0167] Figure 5 is a schematic diagram of the structure of an antenna module provided according to an exemplary embodiment Figure 4 ,like Figure 5 As shown, the antenna module provided by the embodiment of the present disclosure has Figure 4 Other components are further added to the antenna module shown, for example, a third radiator and a fifth antenna feeding circuit.

[0168] like Figure 5 As shown, the antenna module 10 may further include a third radiator 18; the second radiator 15 is arranged between the first radiator 11 and the third radiator 18;

[0169] The third radiator 18 has a seventh upper frame point 181;

[0170] a fifth antenna feeding circuit 182 connected to the seventh upper frame point 181;

[0171] The center frequency covered by the fifth antenna feeding circuit 182 is smaller than the center frequency covered by the fourth antenna feeding circuit 154 .

[0172] In this way, the radiators in the antenna module can be arranged more reasonably, reducing the space occupied by the antenna module in the terminal device.

[0173] Among them, the third radiator can radiate cellular mobile communication signals; the fifth antenna feeding circuit can be a feeding circuit for the third radiator to radiate low-frequency wireless signals. For example, the fifth antenna feeding circuit can be a feeding circuit for an LB antenna; accordingly, the third radiator can be an LB antenna. The seventh upper frame point can be a connection point between the fifth antenna feeding circuit and the third radiator, that is, a feeding point of the fifth antenna.

[0174] In the embodiment of the present disclosure, the first antenna feed circuit transmits near-field communication signals, the second antenna feed circuit, the third antenna feed circuit and the fifth antenna feed circuit respectively transmit cellular mobile communication signals of different frequency bands, and the fourth antenna feed circuit transmits navigation and positioning signals.

[0175] Here, the space between the third radiator and the second radiator may also be filled with insulating material to provide a clearance between the second radiator and the third radiator, so that the second radiator and the third radiator can radiate different wireless signals respectively.

[0176] Exemplarily, when the fourth antenna feeding circuit is the feeding circuit of the GPS L5 antenna and the fifth antenna feeding circuit is the feeding circuit of the LB antenna, the center frequency covered by the fourth antenna feeding circuit may be 1.178 GHz, and the center frequency covered by the fifth antenna feeding circuit may be 830 MHz.

[0177] In one embodiment of the present disclosure, Figure 5 As shown, the shape of the first radiator 11, the shape of the second radiator 15 and the shape of the third radiator 18 are all L-shaped. In this way, by setting the shapes of the first radiator, the second radiator and the third radiator, the layout of other functional components of the terminal device can be better matched, thereby reducing the space occupied by the antenna module in the terminal device.

[0178] Currently, if Figure 6As shown, in the conventional antenna module 100, antenna ANT1 is the GPS L1 antenna, ANT2 is the wireless network communication (WIFI) antenna, ANT3 is the GPS L5 antenna, ANT4 is the MHB antenna, and ANT5 is the N7879, i.e., 5G antenna. Among them, the conventional antenna module 100 makes the SAR detection on the top metal arm of the terminal device such as a mobile phone, and makes the low-frequency antenna on the side of the mobile phone, and the NFC antenna is made on the bracket in the form of a flexible printed circuit (FPC). This setting method will result in insufficient sensitivity of NFC use, and the low-frequency antenna will occupy the side space of the mobile phone.

[0179] Based on this, an embodiment of the present disclosure provides an antenna module, by electrically connecting the first antenna feeding circuit and the second antenna feeding circuit at the first upper frame point of the first radiator, so that the first radiator realizes co-feeding of the first antenna and the second antenna at the first upper frame point to radiate the wireless signal of the first antenna and the wireless signal of the second antenna, thereby not only reducing the number of upper frames of the antenna, but also reducing the occupied space of the antenna module in the terminal device, further reducing the cost; and, when the first antenna feeding circuit is in a working state, the signal on the second antenna feeding circuit is isolated by an isolation circuit, and similarly, when the second antenna feeding circuit is in a working state, the signal on the first antenna feeding circuit is isolated by an isolation circuit, thereby reducing the influence of the second antenna on the antenna performance of the first antenna, and improving the signal receiving and transmitting performance of the antenna module; at the same time, the second radiator is used as a SAR detection, and on the premise of meeting the SAR detection, the capacitance of the third impedance component can be flexibly changed to change the background capacitance of the proximity sensor (SAR sensor) chip, thereby increasing the degree of freedom of SAR sensor debugging.

[0180] A terminal device provided in an embodiment of the present disclosure includes: Figure 7 is a schematic diagram of the structure of a terminal device according to an exemplary embodiment; Figure 7 The terminal device 1 shown comprises at least:

[0181] Conductive housing 20;

[0182] The antenna module 10 described in the above embodiment of the present disclosure;

[0183] A portion 211 of the first conductive edge 21 in the conductive housing 20 is reused as the first radiator 11 of the antenna module 10 .

[0184] In the disclosed embodiment, the conductive shell may be a metal part having a conductive area; the conductive shell may be an outer frame of a terminal device such as a mobile phone, used to support functional components inside the mobile phone.

[0185] The antenna module proposed in the present disclosure can be set on a conductive shell, or the first conductive edge in the conductive shell can be used as an antenna in a mobile phone for sending and receiving wireless signals, that is, multiplexed as the first radiator of the antenna module of the embodiment of the present disclosure.

[0186] In one embodiment of the present disclosure, Figure 7 As shown, the conductive shell 20 also includes a second conductive edge 22 arranged adjacent to the first conductive edge 21; another part 212 of the first conductive edge 21 and a part 221 of the second conductive edge 22 are reused as the second radiator 15 of the antenna module 10; another part 222 of the second conductive edge 22 is reused as the third radiator 18 of the antenna module 10.

[0187] Exemplarily, the conductive shell may be in a rectangular shape, that is, the conductive shell may include opposite long sides and opposite short sides; in this case, the first conductive side may be a short side, such as the top of a mobile phone, and the second conductive side may be a long side. The first radiator proposed in the present disclosure may be located on a short side, the second radiator may be located on the short side and a long side connected to the short side, and the third radiator may be located on the long side.

[0188] By multiplexing different conductive edges of the conductive shell as the first radiator, the second radiator and the third radiator, the space occupied by the antenna module in the terminal device is reduced and the flexibility of the layout of other functional components of the terminal device is improved.

[0189] It should be noted that the “first” and “second” in the embodiments of the present disclosure are only for the convenience of description and distinction and have no other specific meanings.

[0190] Figure 8 1 is a block diagram of a terminal device according to an exemplary embodiment. For example, the terminal device may be a mobile phone, a computer, a digital broadcast terminal, a message transceiver device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0191] Reference Figure 8 The terminal device may include one or more of the following components: a processing component 802 , a memory 804 , a power component 806 , a multimedia component 808 , an audio component 810 , an input / output (I / O) interface 812 , a sensor component 814 , and a communication component 816 .

[0192] The processing component 802 generally controls the overall operation of the terminal device, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the above method. In addition, the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

[0193] The memory 804 is configured to store various types of data to support operations on the terminal device. Examples of such data include instructions for any application or method operating on the terminal device, contact data, phone book data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0194] The power supply component 806 provides power to various components of the terminal device. The power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the terminal device.

[0195] The multimedia component 808 includes a screen that provides an output interface between the terminal device and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and / or a rear camera. When the terminal device is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0196] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC), and when the terminal device is in an operation mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 804 or sent via the communication component 816. In some embodiments, the audio component 810 also includes a speaker for outputting audio signals.

[0197] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0198] The sensor assembly 814 includes one or more sensors for providing various aspects of status assessment for the terminal device. For example, the sensor assembly 814 can detect the open / closed state of the terminal device, the relative positioning of components, such as the display and keypad of the terminal device, and the sensor assembly 814 can also detect the position change of the terminal device or a component of the terminal device, the presence or absence of user contact with the terminal device, the orientation or acceleration / deceleration of the terminal device, and the temperature change of the terminal device. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0199] The communication component 816 is configured to facilitate wired or wireless communication between the terminal device and other devices. The terminal device can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0200] In an exemplary embodiment, the terminal device may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0201] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed in this disclosure. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0202] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. An antenna module, characterized in that: include: A first radiator having a first upper frame point; A first antenna feeding circuit and a second antenna feeding circuit are both electrically connected to the first upper frame point; an isolation circuit, electrically connected to the first upper frame point and the first antenna feeding circuit, and configured to isolate a signal on the second antenna feeding circuit when the first antenna feeding circuit is in an operating state; A signal on the first antenna feed circuit is isolated when the second antenna feed circuit is in an operational state.

2. The antenna module according to claim 1, characterized in that: The antenna module also includes: An impedance tuning circuit has one end connected to a connection line between the first upper frame point and the second antenna feed circuit and the other end grounded, and is configured to tune the impedance on the connection line between the second antenna feed circuit and the first upper frame point.

3. The antenna module according to claim 2, characterized in that: The impedance tuning circuit comprises: a first impedance component connected to a connection line between the first upper frame point and the second antenna feeding circuit; A first switch circuit, one end of which is connected to a connection line between the first impedance component and the second antenna feeding circuit, and the other end of which is grounded; When the first switch circuit is in different working states, the impedance of the connection line between the second antenna feeding circuit and the first upper frame point is different.

4. The antenna module according to claim 3, characterized in that: There are a plurality of the first switch circuits; the plurality of the first switch circuits are arranged in parallel, and each of the first switch circuits includes at least one first switch component and at least one second impedance component.

5. The antenna module according to any one of claims 1 to 4, characterized in that: The first radiator has a second upper frame point spaced apart from the first upper frame point; the antenna module further includes: The aperture tuning circuit has one end connected to the second upper frame point and the other end grounded, and is configured to tune the radiation length of the first radiator.

6. The antenna module according to claim 5, characterized in that: The aperture tuning circuit comprises: a first capacitor component connected to the second upper frame point; A second switch circuit, one end of which is connected to the first capacitor component and the other end of which is grounded; When the second switch circuit is in different working states, the radiation length of the first radiator is different.

7. The antenna module according to claim 6, characterized in that: There are a plurality of the second switch circuits; the plurality of the second switch circuits are arranged in parallel, and each of the second switch circuits includes at least one second switch component and at least one second capacitor component.

8. The antenna module according to any one of claims 1 to 4, characterized in that: The antenna module also includes: a second radiator, spaced apart from the first radiator and having a third upper frame point away from the first radiator; A third antenna feeding circuit connected to the third upper frame point; The center frequency covered by the third antenna feeding circuit is greater than the center frequency covered by the first antenna feeding circuit.

9. The antenna module according to claim 8, characterized in that: The second radiator further has a fourth upper frame point close to the first radiator; and the antenna module further includes: a fourth antenna feeding circuit, connected to the fourth upper frame point; The center frequency covered by the fourth antenna feeding circuit is smaller than the center frequency covered by the third antenna feeding circuit.

10. The antenna module according to claim 9, characterized in that: The second radiator comprises a first radiating branch having the third upper frame point and a second radiating branch having a fourth upper frame point; A fifth upper frame point is provided at an angle formed by connecting the first radiation branch node and the second radiation branch node; The antenna module also includes: The third impedance component has one end connected to the fifth upper frame point and the other end grounded.

11. The antenna module according to claim 10, characterized in that: The second radiation branch has a sixth upper frame point between the fifth upper frame point and the third upper frame point; The antenna module also includes: A fourth impedance component has one end connected to the sixth upper frame point and the other end grounded.

12. The antenna module according to claim 10, characterized in that: The antenna module also includes: The circuit board is provided with a plurality of debugging capacitor positions, and different debugging capacitor positions contain different capacitor elements; The third impedance component includes at least one capacitive element accommodated in the debugging capacitor position.

13. The antenna module according to claim 9, characterized in that: The antenna module further includes a third radiator; the second radiator is arranged between the first radiator and the third radiator; The third radiator has a seventh upper frame point; a fifth antenna feeding circuit, connected to the seventh upper frame point; The center frequency covered by the fifth antenna feeding circuit is smaller than the center frequency covered by the fourth antenna feeding circuit.

14. The antenna module according to claim 13, characterized in that: The first antenna feed circuit transmits a near field communication signal, the second antenna feed circuit, the third antenna feed circuit and the fifth antenna feed circuit respectively transmit cellular mobile communication signals of different frequency bands, and the fourth antenna feed circuit transmits a navigation positioning signal.

15. The antenna module according to claim 13, characterized in that: The first radiator, the second radiator and the third radiator are all L-shaped.

16. The antenna module according to any one of claims 1 to 4, characterized in that: The isolation circuit comprises: an inductor component connected to a connection line between the first upper frame point and the first antenna feeding circuit; A third capacitor component has one end connected to the connection line between the inductor component and the first antenna feeding circuit, and the other end grounded.

17. A terminal device, characterized in that: include: Conductive housing; The antenna module according to any one of claims 1 to 16; Wherein, a portion of the first conductive edge in the conductive shell is reused as the first radiator of the antenna module.

18. The terminal device according to claim 17, characterized in that: The conductive housing further includes a second conductive edge disposed adjacent to the first conductive edge; Another part of the first conductive edge and a part of the second conductive edge are multiplexed as the second radiator of the antenna module; another part of the second conductive edge is multiplexed as the third radiator of the antenna module.

Images