Switch modules and electronic devices

Abstract

The present application discloses a switch module and an electronic device, belonging to the technical field of electronic devices. The switch module includes: four path selection units and four ports; each of the path selection units is connected to two different ports of the four ports, each of the path selection units includes: a control end, a first one-way conduction component and a second one-way conduction component, the first one-way conduction component is connected to the first port, the first one-way conduction component is also connected to the second port through the second one-way conduction component, the control end is respectively connected to the first one-way conduction component and the second one-way conduction component, wherein the first one-way conduction component and the second one-way conduction component are used to synchronously conduct or cut off under the control of the control signal connected to the control end, and the forward conduction directions of the first one-way conduction component and the second one-way conduction component are opposite.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic equipment, and specifically relates to a switch module and an electronic equipment. Background Art

[0002] A double pole double throw (DPDT) switch has four independent contacts that can switch between two paths to achieve connection or disconnection at different positions. Currently, DPDT switches are widely used in various terminal devices, especially in radio frequency circuits to meet the switching requirements of radio frequency paths.

[0003] The circuit structure of the current DPDT switch is usually a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) structure, referred to as MOS tube structure.

[0004] However, the DPDT switch under the MOS tube structure has the problem of low port isolation. This means that when the DPDT switch is used in the RF circuit of the medium and high frequency band, there will be a small amount of signal transmission between the two unconnected ports, causing interference between the signals on the two paths. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a switch module and an electronic device that can solve the problem of low port isolation in current DPDT switches.

[0006] In a first aspect, an embodiment of the present application provides a switch module, the switch module comprising: four path selection units and four ports;

[0007] Each of the path selection units is connected to two different ports among the four ports, and each of the path selection units includes: a control end, a first one-way conducting component and a second one-way conducting component, wherein the first one-way conducting component is connected to the first port, and the first one-way conducting component is also connected to the second port through the second one-way conducting component, and the control end is connected to the first one-way conducting component and the second one-way conducting component respectively.

[0008] Among them, the first unidirectional conducting component and the second unidirectional conducting component are used to be synchronously turned on or off under the control of the control signal connected to the control end, and the forward conduction directions of the first unidirectional conducting component and the second unidirectional conducting component are opposite, and the first port and the second port are two different ports among the four ports.

[0009] In a second aspect, an embodiment of the present application provides an electronic device, which includes the switch module described in the first aspect.

[0010] In an embodiment of the present application, the switch module includes: four path selection units and four ports. Each path selection unit includes: a control end, a first one-way conducting component and a second one-way conducting component. The first one-way conducting component is connected to the first port, and the first one-way conducting component is also connected to the second port through the second one-way conducting component. In this technical solution, the first one-way conducting component and the second one-way conducting component are used to be synchronously turned on or off under the control of the control signal connected to the control end, and the forward conduction directions of the first one-way conducting component and the second one-way conducting component are opposite. Therefore, in the case where the first one-way conducting component and the second one-way conducting component are synchronously cut off, even if one of the first one-way conducting component and the second one-way conducting component is turned on due to receiving a stronger signal, so as to transmit a signal to the other one-way conducting component. However, the other one-way conducting component can also effectively cut off the transmitted signal due to being in a cut-off state. Therefore, the structure of the path selection unit can effectively enhance the isolation between the two ports connected thereto, so as to enhance the port isolation performance of the switch module. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is one of the circuit diagrams of the DPDT switch of the related art;

[0012] Figure 2 This is the second circuit diagram of the DPDT switch of the related art;

[0013] Figure 3 This is the third circuit diagram of the DPDT switch of the related art;

[0014] Figure 4 This is one of the structural schematic diagrams of the switch module provided in the embodiment of the present application;

[0015] Figure 5 This is the second structural diagram of the switch module provided in the embodiment of the present application;

[0016] Figure 6 This is the third structural diagram of the switch module provided in the embodiment of the present application;

[0017] Figure 7 This is the fourth structural diagram of the switch module provided in the embodiment of the present application;

[0018] Figure 8 This is the fifth structural diagram of the switch module provided in the embodiment of the present application;

[0019] Fig. 9 This is one of the isolation simulation schematic diagrams of the switch module provided in the embodiment of the present application;

[0020] Fig.10 This is the second schematic diagram of the isolation simulation of the switch module provided in the embodiment of the present application;

[0021] Fig.11 This is one of the insertion loss simulation schematic diagrams of the switch module provided in the embodiment of the present application;

[0022] Fig.12 This is the second insertion loss simulation schematic diagram of the switch module provided in the embodiment of the present application;

[0023] Fig.13 This is the sixth structural diagram of the switch module provided in the embodiment of the present application;

[0024] Fig.14 This is the third schematic diagram of the isolation simulation of the switch module provided in the embodiment of the present application;

[0025] Fig.15 This is the fourth schematic diagram of the isolation simulation of the switch module provided in the embodiment of the present application;

[0026] Fig.16 This is the third insertion loss simulation diagram of the switch module provided in the embodiment of the present application;

[0027] Fig.17 This is the fourth insertion loss simulation diagram of the switch module provided in the embodiment of the present application. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0029] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0030] The switch module and the electronic device provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0031] The DPDT switch has four independent contacts that can switch between two paths to achieve connection or disconnection at different positions. Currently, the DPDT switch is widely used in various terminal devices, especially in radio frequency circuits to meet the switching requirements of radio frequency paths. For example, Figure 1 As shown, the DPDT switch 1 has a first signal port P1, a second signal port P2, a third signal port P3 and a fourth signal port P4, a total of 4 ports and two conduction states. In the first conduction state, the first signal port P1 of the DPDT switch 1 is connected to the fourth signal port P4, and the second signal port P2 is connected to the third signal port P3. In the second conduction state, the first signal port P1 of the DPDT switch 1 is connected to the third signal port P3, and the second signal port P2 is connected to the fourth signal port P4.

[0032] The circuit structure of the current DPDT switch is usually a metal-oxide-semiconductor field-effect transistor (MOSFET) structure, referred to as a MOS tube structure. Figure 2 As shown, among the four ports of the DPDT switch 1, every two ports are connected through a MOS tube Q. The MOS tube Q is used to control the conduction or disconnection between the two ports connected thereto. Therefore, by controlling the conduction or disconnection of the MOS tube Q in the DPDT switch, the switching of the two paths in the DPDT switch can be realized. Figure 2 Take the MOS tube Q between the first signal port P1 and the second signal port P2 in the DPDT switch 1 as an example.

[0033] For example, Figure 3 As shown, the DPDT switch 1 has a first signal port P1, a second signal port P2, a third signal port P3 and a fourth signal port P4. The first signal port P1 is connected to the second signal port P2 through a first MOS transistor Q1, the second signal port P2 is connected to the third signal port P3 through a second MOS transistor Q2, the third signal port P3 is connected to the fourth signal port P4 through a third MOS transistor Q3, and the fourth signal port P4 is connected to the first signal port P1 through a fourth MOS transistor Q4. In addition, the first signal port P1 of the DPDT switch 1 is also connected to the first signal line L1, the second signal port P2 is also connected to the second signal line L2, the third signal port P3 is also connected to the third signal line L3, and the fourth signal port P4 is also connected to the fourth signal line L4.

[0034] In the first conduction state of the DPDT switch 1, the first MOS transistor Q1 and the third MOS transistor Q3 are turned on, and the second MOS transistor Q2 and the fourth MOS transistor Q4 are turned off. At this time, the first signal port P1 is connected to the second signal port P2 to connect the first signal line L1 and the second signal line L2; the third signal port P3 is connected to the fourth signal port P4 to connect the third signal line L3 and the fourth signal line L4.

[0035] In the second conduction state of the DPDT switch 1, the first MOS transistor Q1 and the third MOS transistor Q3 are turned off, and the second MOS transistor Q2 and the fourth MOS transistor Q4 are turned on. At this time, the second signal port P2 and the third signal port P3 are connected to connect the second signal line L2 and the third signal line L3; the first signal port P1 and the fourth signal port P4 are connected to connect the first signal line L1 and the fourth signal line L4.

[0036] However, due to the internal parasitic capacitance characteristics of the MOS tube. Even if the MOS tube is in the off state, its parasitic capacitance can still conduct part of the signal when a strong signal is applied. Therefore, the DPDT switch under the MOS tube structure has the problem of low port isolation, and the port isolation range under normal circumstances may be 19db~50db. This means that when the DPDT switch is used in RF circuits in the medium and high frequency bands, there may be a small amount of signal transmission between the two unconnected ports due to insufficient port isolation, causing interference between the signals on the two paths, resulting in input and output interference and level deviation of the DPDT switch.

[0037] For example, when the DPDT switch 1 is in the first on-state, a small amount of signal transmission may occur between the second signal port P2 and the third signal port P3, and between the first signal port P1 and the fourth signal port P4 due to insufficient port isolation, thereby causing interference between the signal transmitted between the first signal port P1 and the second signal port P2, and between the signal transmitted between the third signal port P3 and the fourth signal port P4. Similarly, when the DPDT switch 1 is in the second on-state, insufficient port isolation may also cause interference between the signal transmitted between the second signal port P2 and the third signal port P3, and between the first signal port P1 and the fourth signal port P4.

[0038] Please refer to Figure 4 , which shows a schematic diagram of the structure of a switch module provided in an embodiment of the present application. The switch module may be a DPDT switch, so as to solve the interference problem between the signals on the two paths in the DPDT switch to a certain extent. Figure 4 As shown, the switch module 1 includes: four path selection units 10 and four ports P.

[0039] Each path selection unit 10 is connected to two different ports P among the four ports P. Each path selection unit 10 includes: a control terminal Cv, a first one-way conducting component 101, and a second one-way conducting component 102. The first one-way conducting component 101 is connected to the first port P, and the first one-way conducting component 101 is also connected to the second port P through the second one-way conducting component 102. The control terminal Cv is connected to the first one-way conducting component 101 and the second one-way conducting component 102, respectively. The first port P and the second port P are two different ports P among the four ports P.

[0040] The first one-way conducting component 101 and the second one-way conducting component 102 are used to be synchronously turned on or off under the control of the control signal connected to the control terminal Cv. In addition, the forward conducting directions of the first one-way conducting component 101 and the second one-way conducting component 102 are opposite. The forward conducting direction of the first one-way conducting component 101 is the direction from the first port to the second port. The forward conducting direction of the second one-way conducting component 102 is the direction from the second port to the first port.

[0041] In the embodiment of the present application, for each path selection unit 10, when the first one-way conducting component 101 and the second one-way conducting component 102 are conducting, the two ports P connected to the path selection unit 10 can be connected. At this time, a signal received by one port P can be transmitted to another port P.

[0042] In the case where the first one-way conducting component 101 and the second one-way conducting component 102 are cut off, the two ports P connected to the path selection unit 10 can be disconnected. Moreover, even if a very strong signal is connected to the first port to make the first one-way conducting component 101 conduct. However, since the first one-way conducting component 101 and the second one-way conducting component 102 are one-way conducting devices, and the forward conducting directions of the first one-way conducting component 101 and the second one-way conducting component 102 are opposite, the signal transmitted by the first one-way conducting component 101 cannot conduct the second one-way conducting component 102, and the second one-way conducting component 102 is still in a cut-off state, so the signal flowing through the first one-way conducting component 101 cannot be transmitted to the second port through the second one-way conducting component 102.

[0043] Similarly, even if a very strong signal is connected to the second port to make the second unidirectional conduction component 102 conduct. However, the signal transmitted by the second unidirectional conduction component 102 cannot conduct the first unidirectional conduction component 101, and the first unidirectional conduction component 101 is still in a cut-off state, so the signal flowing through the second unidirectional conduction component 102 cannot be transmitted to the first port through the first unidirectional conduction component 101, thereby effectively enhancing the isolation between the first port and the second port. It can be seen that the structure of each path selection unit 10 can effectively enhance the isolation between the two ports connected to it, and effectively enhance the port isolation of the switch module.

[0044] For example, Figure 5 As shown, it is taken as an example that the four ports P include a first signal port P1, a second signal port P2, a third signal port P3 and a fourth signal port P4, and the four path selection units 10 include a first path selection unit 10A, a second path selection unit 10B, a third path selection unit 10C and a fourth path selection unit 10D.

[0045] exist Figure 5 In the embodiment, the first path selection unit 10A is connected to the first signal port P1 and the second signal port P2 respectively. The second path selection unit 10B is connected to the second signal port P2 and the third signal port P3 respectively. The third path selection unit 10C is connected to the third signal port P3 and the fourth signal port P4 respectively. The fourth path selection unit 10D is connected to the fourth signal port P4 and the first signal port P1 respectively.

[0046] The switch module 1 has a first conduction state and a second conduction state, a total of two conduction states. In the first conduction state, the first unidirectional conduction component 101 and the second unidirectional conduction component 102 in the first path selection unit 10A are used to be synchronously conducted under the control of the control signal connected to the control terminal Cv, so as to connect the first signal port P1 and the second signal port P2. The first unidirectional conduction component 101 and the second unidirectional conduction component 102 in the third path selection unit 10C are used to be synchronously conducted under the control of the control signal connected to the control terminal Cv, so as to connect the third signal port P3 and the fourth signal port P4.

[0047] The first unidirectional conduction component 101 and the second unidirectional conduction component 102 in the second path selection unit 10B are used to be synchronously cut off under the control of the control signal connected to the control terminal Cv, so as to disconnect the second signal port P2 and the third signal port P3. The first unidirectional conduction component 101 and the second unidirectional conduction component 102 in the fourth path selection unit 10D are used to be synchronously cut off under the control of the control signal connected to the control terminal Cv, so as to disconnect the fourth signal port P4 and the first signal port P1.

[0048] In the second conduction state of the switch module 1, the first unidirectional conduction component 101 and the second unidirectional conduction component 102 in the second path selection unit 10B are used to be synchronously conducted under the control of the control signal connected to the control terminal Cv, so as to connect the second signal port P2 and the third signal port P3. The first unidirectional conduction component 101 and the second unidirectional conduction component 102 in the fourth path selection unit 10D are used to be synchronously conducted under the control of the control signal connected to the control terminal Cv, so as to connect the fourth signal port P4 and the first signal port P1.

[0049] The first unidirectional conduction component 101 and the second unidirectional conduction component 102 in the first path selection unit 10A are used to be synchronously cut off under the control of the control signal connected to the control terminal Cv, so as to disconnect the first signal port P1 and the second signal port P2. The first unidirectional conduction component 101 and the second unidirectional conduction component 102 in the third path selection unit 10C are used to be synchronously cut off under the control of the control signal connected to the control terminal Cv, so as to disconnect the third signal port P3 and the fourth signal port P4.

[0050] exist Figure 5 The switch module 1 shown is applied to radio frequency circuits, especially to medium and high frequency radio frequency circuits, in which the radio frequency circuits are prone to transmit stronger radio frequency signals. However, even if a port P receives a stronger radio frequency signal and turns on the first one-way conducting component 101 (or the second one-way conducting component 102). However, the second one-way conducting component 102 connected to the first one-way conducting component 101 (or the first one-way conducting component 101 connected to the second one-way conducting component 102) is in a cut-off state. Therefore, the radio frequency signal flowing through the first one-way conducting component 101 (or the second one-way conducting component 102) cannot be transmitted through the second one-way conducting component 102 (or the first one-way conducting component 101). Therefore, Figure 5 The switch module 1 shown has a high port isolation.

[0051] In summary, the switch module provided by the embodiment of the present application includes: four path selection units and four ports. Each path selection unit includes: a control end, a first one-way conducting component and a second one-way conducting component. The first one-way conducting component is connected to the first port, and the first one-way conducting component is also connected to the second port through the second one-way conducting component. In this technical solution, the first one-way conducting component and the second one-way conducting component are used to be synchronously turned on or off under the control of the control signal connected to the control end, and the forward conduction directions of the first one-way conducting component and the second one-way conducting component are opposite. Therefore, in the case where the first one-way conducting component and the second one-way conducting component are synchronously cut off, even if one of the first one-way conducting component and the second one-way conducting component is turned on due to receiving a stronger signal, so as to transmit a signal to the other one-way conducting component. However, the other one-way conducting component can also effectively cut off the transmitted signal due to being in a cut-off state. Therefore, the structure of the path selection unit can effectively enhance the isolation between the two ports connected thereto, so as to enhance the port isolation performance of the switch module.

[0052] Alternatively, if Figure 6 As shown, each path selection unit 10 may further include: a first filtering component 103 and a second filtering component 104 .

[0053] The first filter component 103 and the control terminal Cv are both connected to the first unidirectional conduction component 101, and the first filter component 103 is also connected to the first port P. The first filter component 103 is used to block the control signal from being transmitted to the first port P. The second filter component 104 and the control terminal Cv are both connected to the second unidirectional conduction component 102, and the second filter component 104 is also connected to the second port P. The second filter component 104 is used to block the control signal from being transmitted to the second port P.

[0054] In this way, the first filter component 103 and the second filter component 104 effectively block the control signal from being transmitted to the two ports P connected to the path selection unit 10, and the accuracy of the signal transmitted by the two ports P connected to the path selection unit 10 can be effectively guaranteed. For example, the first filter component 103 and the second filter component 104 can be capacitors. Alternatively, the first filter component 103 and the second filter component 104 can also be DC filters.

[0055] It should be noted that Figure 6 So Figure 5 The schematic diagram of the switch module based on Figure 6The first path selection unit 10A in FIG. 1 is used as an example. The first path selection unit 10A includes a first filter component 103 and a second filter component 104. The first filter component 103 is also connected to the first signal port P1, and is used to block the control signal from being transmitted to the first signal port P1. The second filter component 104 is connected to the second signal port P2, and is used to block the control signal from being transmitted to the second signal port P2.

[0056] In an alternative case, please continue to refer to Figure 6 , the first unidirectional conduction component 101 may include: a first diode D1. Similarly, the second unidirectional conduction component 102 may include: a second diode D2. The anode of the first diode D1 is connected to the first port P, the cathode of the first diode D1 is connected to the cathode of the second diode D2, and the anode of the second diode D2 is connected to the second port. The control terminal Cv is connected to the anodes of the first diode D1 and the second diode D2, respectively.

[0057] Accordingly, the control signal provided by the control terminal Cv may include a forward voltage signal and a reverse voltage signal. The first diode D1 and the second diode D2 are used to conduct under the control of the forward voltage signal connected to the control terminal Cv. The first diode D1 and the second diode D2 are also used to cut off under the control of the reverse voltage signal connected to the control terminal Cv. Among them, the value of the forward voltage signal can be the forward conduction voltage of the first diode D1 and the second diode D2. The value of the reverse voltage signal can be the reverse cut-off voltage of the first diode D1 and the second diode D2.

[0058] In some embodiments of the present application, each path selection unit 10 includes a first diode D1 and a second diode D2. In addition, the anode of the first diode D1 is connected to the first port P, the cathode of the first diode D1 is connected to the cathode of the second diode D2, and the anode of the second diode D2 is connected to the second port. The diode has unidirectional conductivity and reverse barrier effect, which makes it possible for the two ends of the diode to form a strong signal isolation characteristic when the diode is cut off (i.e., not conducting).

[0059] Specifically, when the first diode D1 and the second diode D2 are turned on, the two ports P connected to the path selection unit 10 can be connected. At this time, a signal received by one port P can be transmitted to the other port P.

[0060] When the first diode D1 and the second diode D2 are cut off, the two ports P connected to the path selection unit 10 can be disconnected. Moreover, even if a very strong signal is connected to the first port to make the first diode D1 conduct. However, due to the unidirectional conductivity and reverse barrier effect of the diode, and the forward conduction directions of the first diode D1 and the second diode D2 are opposite. Therefore, when the anode of the second diode D2 does not receive the forward voltage signal provided by the control terminal Cv, the signal transmitted by the first diode D1 cannot conduct the second diode D2, and the second diode D2 is in a cut-off state. At this time, the unidirectional conductivity and reverse barrier effect of the second diode D2 can block the signal passing through the first diode D1 from being transmitted to the second port.

[0061] Similarly, even if a very strong signal is connected to the second port to make the second diode D2 conduct. However, due to the unidirectional conductivity and reverse barrier effect of the diode, and the forward conduction directions of the first diode D1 and the second diode D2 are opposite. Therefore, when the anode of the first diode D1 does not receive the forward voltage signal provided by the control terminal Cv, the signal transmitted by the second diode D2 cannot conduct the first diode D1, and the first diode D1 is in a cut-off state. At this time, the unidirectional conductivity and reverse barrier effect of the first diode D1 can block the signal transmitted through the second diode D2 to the first port, thereby greatly increasing the isolation between the first port and the second port. It can be seen that the structure of each path selection unit 10 can effectively enhance the isolation between the two ports connected to it, and effectively enhance the port isolation of the switch module.

[0062] For example, please refer to Figure 6 In each path selection unit 10, the first unidirectional conduction component 101 includes a first diode D1. The second unidirectional conduction component 102 includes a second diode D2. The first filter component 103 may include a first capacitor C1. The second filter component 104 may include a second capacitor C2. The anode of the first diode D1 is connected to the first port P, the cathode of the first diode D1 is connected to the cathode of the second diode D2, and the anode of the second diode D2 is connected to the second port. The control terminal Cv is connected to the anode of the first diode D1 and the anode of the second diode D2, respectively. The first capacitor C1 is connected to the first port P and the anode of the first diode D1, respectively. The second capacitor C2 is connected to the second port P and the anode of the second diode D2, respectively.

[0063] In some embodiments of the present application, Figure 6 As shown, each passage selection unit 10 may further include: a flow guiding component 105 .

[0064] Among them, one end of the flow guiding component 105 is connected to the first one-way conducting component 101 and the second one-way conducting component 102, and the other end of the flow guiding component 105 is grounded. The flow guiding component 105 is used to switch to an open circuit state when the first one-way conducting component 101 and the second one-way conducting component 102 are conducting, so that the signal transmitted between the first one-way conducting component 101 and the second one-way conducting component 102 cannot pass through the flow guiding component 105, thereby reducing the loss of the signal transmitted between the first one-way conducting component 101 and the second one-way conducting component 102. The flow guiding component 105 is also used to switch to a short circuit state when the first one-way conducting component 101 and the second one-way conducting component 102 are cut off, so that the signal transmitted from the first one-way conducting component 101 to the second one-way conducting component 102, or the signal transmitted from the second one-way conducting component 102 to the first one-way conducting component 101 can be exported to the switch module through the flow guiding component 105 as much as possible, effectively blocking the signal flow between the first one-way conducting component 101 and the second one-way conducting component 102.

[0065] In the embodiment of the present application, in the path selection unit 10, when the first one-way conducting component 101 and the second one-way conducting component 102 are conducting, the two ports P connected to the path selection unit 10 can be connected, and the flow guiding component 105 is switched to an open circuit state. At this time, of the two ports P connected to the path selection unit 10, the signal received by one port P can be directly transmitted to the other port P through the first one-way conducting component 101 and the second one-way conducting component 102, and will not flow to the flow guiding component 105. Therefore, while ensuring that the two ports P can effectively transmit signals, the insertion loss introduced by the flow guiding component 105 can also be reduced.

[0066] When the first one-way conducting component 101 and the second one-way conducting component 102 are cut off, the two ports P connected to the path selection unit 10 can be disconnected, and the flow guiding component 105 is switched to a short-circuit state. At this time, even if a very strong signal is connected to the first port to make the first one-way conducting component 101 conduct. However, since the flow guiding component 105 is in a short-circuit state. Therefore, the signal transmitted by the first one-way conducting component 101 will be preferentially transmitted to the flow guiding component 105. In combination with the second one-way conducting component 102 in a cut-off state. The signal transmitted by the first one-way conducting component 101 cannot be transmitted to the second port through the second one-way conducting component 102, further improving the isolation between the first port and the second port.

[0067] Similarly, even if a very strong signal is connected to the second port to make the second unidirectional conduction component 102 conduct. However, since the flow guide component 105 is in a short-circuit state. Therefore, the signal transmitted by the second unidirectional conduction component 102 will be preferentially transmitted to the flow guide component 105. In combination with the first unidirectional conduction component 101 in a cut-off state. The signal transmitted by the second unidirectional conduction component 102 is even less likely to be transmitted to the first port through the first unidirectional conduction component 101, further improving the isolation between the first port and the second port. It can be seen that in the case where the path selection unit 10 includes the flow guide component 105, the structure of each path selection unit 10 can more effectively enhance the isolation between the two ports connected thereto, and effectively enhance the port isolation of the switch module.

[0068] Alternatively, if Figure 6 As shown, the flow guide component 105 includes: an impedance conversion component 1051 and a third one-way conducting component 1052. One end of the impedance conversion component 1051 is connected to the first one-way conducting component 101 and the second one-way conducting component 102. The other end of the impedance conversion component 1051 is grounded through the third one-way conducting component 1052. The third one-way conducting component 1052 is connected to the control terminal Cv.

[0069] The impedance conversion element 1051 is used to switch to an open circuit state by changing the characteristic impedance of the impedance conversion element 1051 when the third unidirectional conductive component 1052 is in a conductive state; and to switch to a short circuit state by changing the characteristic impedance of the impedance conversion element 1051 when the third unidirectional conductive component 1052 is in a cut-off state. The third unidirectional conductive component 1052 is used to be synchronously turned on or off with the first unidirectional conductive component 101 and the second unidirectional conductive component 102 under the control of the control signal connected to the control terminal Cv. The forward conduction direction of the third unidirectional conductive component 1052 is the direction in which the impedance conversion element 1051 points to the ground.

[0070] For example, the impedance transformation element 1051 may be a 90° delay microstrip line L. The 90° delay microstrip line L may change the phase and amplitude of its transmission signal during the transmission process, and such a change may change the impedance distribution in the impedance transformation element 1051, thereby achieving characteristic impedance adjustment. In addition, the output end of the 90° delay microstrip line L (i.e., the connection end between the 90° delay microstrip line L and the first unidirectional conductive component 101 and the second unidirectional conductive component 102) is in an open circuit state or a short circuit state.

[0071] When the third unidirectional conductive component 1052 is turned on so that the third unidirectional conductive component 1052 is in a short-circuit state, it is converted to an open-circuit state after the impedance transformation of the 90° delayed microstrip line. Specifically. After the transmission signal passes through the short-circuit point to the ground of the third unidirectional conductive component 1052, the reflected wave will propagate on the 90° delayed microstrip line L, and superimpose with the incident wave at the output end of the 90° delayed microstrip line L, adjust the characteristic impedance of the microstrip line, and form an open-circuit state. Similarly, when the third unidirectional conductive component 1052 is cut off so that the third unidirectional conductive component 1052 is in an open-circuit state, it is converted to a short-circuit state after the impedance transformation of the 90° delayed microstrip line. Specifically. After the transmission signal encounters the open-circuit point of the third unidirectional conductive component 1052, the reflected wave will propagate on the 90° delayed microstrip line L, and superimpose with the incident wave at the output end of the 90° delayed microstrip line L, adjust the characteristic impedance of the microstrip line, and form a short-circuit state.

[0072] Further optionally, if Figure 8 As shown, the third unidirectional conduction component 1052 includes a third diode D3. The anode of the third diode D3 is connected to the impedance conversion element 1051, and the cathode of the third diode D3 is grounded. In some embodiments of the present application, the first unidirectional conduction component 101 includes a first diode D1. The second unidirectional conduction component 102 includes a second diode D2. The first diode D1 and the second diode D2 are used to conduct under the control of the forward voltage signal connected to the control terminal Cv; and to cut off under the control of the reverse voltage signal connected to the control terminal Cv.

[0073] When the first diode D1 is controlled to be turned on by the forward voltage signal, and the second diode D2 is controlled to be turned on by the forward voltage signal, one forward voltage signal is transmitted to the third diode D3 via the first diode D1, and the other forward voltage signal is transmitted to the third diode D3 via the second diode D2. The anode of the third diode D3 is turned on under the control of receiving the forward voltage signals transmitted in two ways. Similarly, when the first diode D1 is controlled to be cut off by the reverse voltage signal, and the second diode D2 is controlled to be cut off by the reverse voltage signal, the anode voltage of the third diode D3 is low or even 0, and the third diode D3 is cut off. Based on this, the value of the forward voltage signal can be the forward conduction voltage of the third diode D3. The value of the reverse voltage signal can be the reverse cut-off voltage of the first diode D1 and the second diode D2. For example, the forward voltage signal can be 1.8V, and the reverse voltage signal can be 0V.

[0074] In some embodiments of the present application, each path selection unit 10 includes a first diode D1 , a second diode D2 , a 90° delay microstrip line L and a third diode D3 .

[0075] In addition, the anode of the first diode D1 is connected to the first port P, the cathode of the first diode D1 is connected to the cathode of the second diode D2, and the anode of the second diode D2 is connected to the second port. The anode of the third diode D3 is connected to the first diode D1 and the second diode D2 through a 90° delayed microstrip line L, and the cathode of the third diode D3 is grounded.

[0076] Specifically, when the first diode D1 and the second diode D2 are turned on, the two ports P connected to the path selection unit 10 can be connected, and the third diode D3 can be controlled to be turned on. The third diode D3 is turned on so that the third diode D3 is in a short-circuit state, but is converted to an open-circuit state after the impedance transformation of the 90° delay microstrip line. At this time, of the two ports P connected to the path selection unit 10, the signal received by one port P can be directly transmitted to the other port P through the first diode D1 and the second diode D2, and will not flow to the 90° delay microstrip line. Therefore, while ensuring that the two ports P can effectively transmit signals, the insertion loss introduced by the third diode D3 can also be reduced.

[0077] When the first diode D1 and the second diode D2 are cut off, the two ports P connected to the path selection unit 10 can be disconnected, and the third diode D3 can be controlled to be cut off. When the third diode D3 is cut off, the third diode D3 is in an open circuit state, and is converted to a short circuit state after the impedance transformation of the 90° delay microstrip line.

[0078] At this time, even if a very strong signal is connected to the first port to make the first diode D1 conduct, since the target path is in a short-circuit state, the signal transmitted by the first diode D1 will be preferentially transmitted to the target path. In combination with the second diode D2 in a cut-off state, the signal transmitted by the first diode D1 cannot be transmitted to the second port through the second diode D2, further improving the isolation between the first port and the second port.

[0079] Similarly, even if a very strong signal is connected to the second port to make the second diode D2 conduct. However, since the target path is in a short-circuit state. Therefore, the signal transmitted by the second diode D2 will be preferentially transmitted to the target path. In combination with the first diode D1 in a cut-off state. The signal transmitted by the second diode D2 is even less likely to be transmitted to the first port through the first diode D1, further improving the isolation between the first port and the second port. It can be seen that the structure of each path selection unit 10 can more effectively enhance the isolation between the two ports connected thereto, and effectively enhance the port isolation of the switch module.

[0080] In some embodiments of the present application, the control signal provided by the control terminal Cv may include a conduction control signal and a cutoff control signal. Figure 7As shown, the switch module 1 further includes a control unit 20 . The control unit 20 is connected to the control terminal Cv of each path selection unit 10 .

[0081] The control unit 20 is used to output a conduction control signal to the control terminals of the first and third path selection units, and output a cutoff control signal to the control terminals of the second and fourth path selection units, when receiving the first conduction signal. The control unit 20 is also used to output a cutoff control signal to the control terminals of the first and third path selection units, and output a conduction control signal to the control terminals of the second and fourth path selection units, when receiving the second conduction signal.

[0082] The conduction control signal is used to control the synchronous conduction of the first unidirectional conduction component 101 and the second unidirectional conduction component 102 in the received path selection unit. The cutoff control signal is used to control the synchronous cutoff of the first unidirectional conduction component 101 and the second unidirectional conduction component 102 in the received path selection unit. The first path selection unit, the second path selection unit, the third path selection unit and the fourth path selection unit constitute four path selection units 10, and the four ports connected to the first path selection unit and the third path selection unit are different, and the four ports connected to the second path selection unit and the fourth path selection unit are different.

[0083] For more information, please refer to Figure 7 , the switch module 1 is in the first conduction state, and the control unit 20 can receive the first conduction signal through the switching control port C. The control unit 20 is used to output the conduction control signal to the control terminal Cv0 of the first path selection unit 10A and the third path selection unit 10C, and output the cutoff control signal to the control terminal Cv1 of the second path selection unit 10B and the fourth path selection unit 10D when receiving the first conduction signal.

[0084] At this time, the first one-way conducting component 101 and the second one-way conducting component 102 in the first path selection unit 10A are synchronously turned on, and the first port P1 and the second port P2 are connected to transmit signals. The first one-way conducting component 101 and the second one-way conducting component 102 in the third path selection unit 10C are synchronously turned on, and the third port P3 and the fourth port P4 are connected to transmit signals. The first one-way conducting component 101 and the second one-way conducting component 102 in the second path selection unit 10B are synchronously cut off, and the second port P3 and the third port P3 are disconnected. The first one-way conducting component 101 and the second one-way conducting component 102 in the fourth path selection unit 10D are synchronously cut off, and the first port P1 and the fourth port P4 are disconnected.

[0085] When the switch module 1 is in the second conduction state, the control unit 20 can receive the second conduction signal through the switching control port C. The control unit 20 is further configured to output a cutoff control signal to the control terminal Cv0 of the first path selection unit 10A and the third path selection unit 10C, and output a conduction control signal to the control terminal Cv1 of the second path selection unit 10B and the fourth path selection unit 10D, when receiving the second conduction signal.

[0086] At this time, the first one-way conducting component 101 and the second one-way conducting component 102 in the first path selection unit 10A are synchronously cut off, and the first port P1 and the second port P2 are disconnected. The first one-way conducting component 101 and the second one-way conducting component 102 in the third path selection unit 10C are synchronously cut off, and the third port P3 and the fourth port P4 are disconnected. The first one-way conducting component 101 and the second one-way conducting component 102 in the second path selection unit 10B are synchronously turned on, and the second port P3 and the third port P3 are connected to transmit signals. The first one-way conducting component 101 and the second one-way conducting component 102 in the fourth path selection unit 10D are synchronously turned on, and the first port P1 and the fourth port P4 are connected to transmit signals.

[0087] Further, when the switch module 1 includes the flow guide component 105, the control unit 20 is used to output a conduction control signal to the control terminal Cv0 of the first path selection unit 10A and the third path selection unit 10C, and output a cutoff control signal to the control terminal Cv1 of the second path selection unit 10B and the fourth path selection unit 10D when receiving the first conduction signal.

[0088] At this time, the first unidirectional conduction component 101, the second unidirectional conduction component 102 and the third unidirectional conduction component 1052 in the first path selection unit 10A are synchronously turned on, the first port P1 and the second port P2 are connected to transmit signals, and the target path in the first path selection unit 10A is in an open state. The first unidirectional conduction component 101, the second unidirectional conduction component 102 and the third unidirectional conduction component 1052 in the third path selection unit 10C are synchronously turned on, the third port P3 and the fourth port P4 are connected to transmit signals, and the target path in the third path selection unit 10C is in an open state.

[0089] The first one-way conducting component 101, the second one-way conducting component 102 and the third one-way conducting component 1052 in the second path selection unit 10B are cut off synchronously, the second port P3 and the third port P3 are disconnected, and the target path in the second path selection unit 10B is in a short-circuit state. The first one-way conducting component 101 and the second one-way conducting component 102 in the fourth path selection unit 10D are cut off synchronously, the first port P1 and the fourth port P4 are disconnected, and the target path in the fourth path selection unit 10D is in a short-circuit state.

[0090] The control unit 20 is further configured to output a cutoff control signal to the control terminal Cv0 of the first and third path selection units 10A and 10C, and output a conduction control signal to the control terminal Cv1 of the second and fourth path selection units 10B and 10D when receiving the second conduction signal.

[0091] At this time, the first one-way conducting component 101, the second one-way conducting component 102 and the third one-way conducting component 1052 in the first path selection unit 10A are synchronously cut off, the first port P1 and the second port P2 are disconnected, and the target path in the first path selection unit 10A is in a short-circuit state. The first one-way conducting component 101, the second one-way conducting component 102 and the third one-way conducting component 1052 in the third path selection unit 10C are synchronously cut off, the third port P3 and the fourth port P4 are disconnected, and the target path in the third path selection unit 10C is in a short-circuit state.

[0092] The first unidirectional conduction component 101, the second unidirectional conduction component 102 and the third unidirectional conduction component 1052 in the second path selection unit 10B are synchronously turned on, the second port P3 and the third port P3 are connected to transmit signals, and the target path in the second path selection unit 10B is in a short-circuit state. The first unidirectional conduction component 101, the second unidirectional conduction component 102 and the third unidirectional conduction component 1052 in the fourth path selection unit 10D are synchronously turned on, the first port P1 and the fourth port P4 are connected to transmit signals, and the target path in the fourth path selection unit 10D is in a short-circuit state.

[0093] In an optional case, in each path selection unit 10, the first unidirectional conduction component 101 is a first diode D1, the second unidirectional conduction component 102 is a second diode D2, and the third unidirectional conduction component 1052 is a third diode D3. Based on this, the conduction control signal is the aforementioned forward voltage signal. The cutoff control signal is the aforementioned reverse voltage signal. Optionally, the first conduction signal can be a forward voltage signal. The second conduction signal can be a reverse voltage signal. Figure 7 As shown, the control unit 20 may include a switching control port C, an inverter G, a first output terminal and a second output terminal.

[0094] The switch control port C is used to receive the first conduction signal (forward voltage signal) or the second conduction signal (reverse voltage signal). The switch control port C is also directly connected to the first input terminal. The input terminal of the inverter G is connected to the switch control port C, and the output terminal of the inverter G is connected to the second output terminal. The first output terminal is connected to the control terminal Cv0 of the first path selection unit 10A and the third path selection unit 10C. The second output terminal is connected to the control terminal Cv1 of the second path selection unit 10B and the fourth path selection unit 10D.

[0095] The inverter G is used to perform reverse processing on the received signal and output a reverse voltage signal of the received signal. Specifically, when the switching control port C receives the first conduction signal, the switching control port C outputs a forward voltage signal to the first output terminal to transmit the forward voltage signal (i.e., conduction control signal) to the control terminal Cv0 of the first path selection unit 10A and the third path selection unit 10C. In addition, the switching control port C outputs a reverse voltage signal to the second output terminal through the inverter G to transmit the reverse voltage signal (i.e., cutoff control signal) to the control terminal Cv1 of the second path selection unit 10B and the fourth path selection unit 10D.

[0096] When the switch control port C receives the second conduction signal, the switch control port C outputs a forward voltage signal to the second output terminal through the inverter G, so as to output a forward voltage signal (i.e., a conduction control signal) to the control terminal Cv1 of the second path selection unit 10B and the fourth path selection unit 10D. In addition, the switch control port C outputs a reverse voltage signal to the first output terminal, so as to transmit a reverse voltage signal (i.e., a cutoff control signal) to the control terminal Cv0 of the first path selection unit 10A and the third path selection unit 10C.

[0097] In the embodiment of the present application, the switch module includes: four path selection units and four ports. Each path selection unit includes: a control end, a first one-way conducting component and a second one-way conducting component. The first one-way conducting component is connected to the first port, and the first one-way conducting component is also connected to the second port through the second one-way conducting component. In this technical solution, the first one-way conducting component and the second one-way conducting component are used to be synchronously turned on or off under the control of the control signal connected to the control end, and the forward conduction directions of the first one-way conducting component and the second one-way conducting component are opposite. Therefore, in the case where the first one-way conducting component and the second one-way conducting component are synchronously cut off, even if one of the first one-way conducting component and the second one-way conducting component is turned on due to receiving a stronger signal, so as to transmit a signal to the other one-way conducting component. However, the other one-way conducting component can also effectively cut off the transmitted signal due to being in a cut-off state. Therefore, the structure of the path selection unit can effectively enhance the isolation between the two ports connected thereto, so as to enhance the port isolation performance of the switch module.

[0098] In order to facilitate further understanding of the technical solution of the present application, the switch module provided in the embodiment of the present application is schematically described again below by taking the switch module applied to the radio frequency path as an example.

[0099] Please refer to Figure 8 When the control terminal C of the switch module 1 receives a 1.8V forward voltage signal V (i.e., a conduction control signal), the control terminals of the first path selection unit 10A and the third path selection unit 10C can receive the forward voltage signal V, and the control terminals of the second path selection unit 10B and the fourth path selection unit 10D can receive the reverse voltage signal V`.

[0100] In this case, the first signal port P1 and the second signal port P2 are connected, the fourth signal port P4 and the third signal port P3 are connected, the first signal port P1 and the fourth signal port P4 are disconnected, and the second signal port P2 and the third signal port P3 are disconnected.

[0101] In the first path selection unit 10A and the third path selection unit 10C, the first diode D1, the second diode D2 and the third diode D3 are turned on. The third diode D3 is turned on so that the third diode D3 is short-circuited to ground, but after the impedance transformation of the 90° delay microstrip line L, it is converted into a RF open circuit state.

[0102] At this time, the RF signal received by the first signal port P1 can be directly transmitted to the second signal port P2 through the first diode D1 and the second diode D2 in the first path selection unit 10A. And the RF signal will not flow to the target path in the first path selection unit 10A. While ensuring the effective transmission of signals between the first signal port P1 and the second signal port P2, the insertion loss introduced by the third diode D3 in the first path selection unit 10A can be reduced, and the RF insertion loss when the first signal port P1 and the second signal port P2 are turned on can be reduced.

[0103] Similarly, the RF signal received by the fourth signal port P4 can be directly transmitted to the third signal port P3 through the first diode D1 and the second diode D2 in the third path selection unit 10C. In addition, the RF signal will not flow to the target path in the third path selection unit 10C. While ensuring that the fourth signal port P4 and the third signal port P3 effectively transmit signals, the insertion loss introduced by the third diode D3 in the third path selection unit 10C can be reduced, and the RF insertion loss when the fourth signal port P4 and the third signal port P3 are turned on can be reduced.

[0104] In the second path selection unit 10B and the fourth path selection unit 10D, the first diode D1, the second diode D2 and the third diode D3 are cut off. The third diode D3 is cut off so that the third diode D3 is in an open circuit state to ground, but after the impedance transformation of the 90° delay microstrip line L, it is converted into a radio frequency short circuit state.

[0105] At this time, the RF signal received by the first signal port P1 cannot be transmitted to the fourth signal port P4 through the first diode D1 and the second diode D2 in the fourth path selection unit 10D. Even if a very strong RF signal is connected to the first signal port P1 to make the first diode D1 conductive, the RF signal will be preferentially transmitted to the target path, and combined with the second diode D2 in the cut-off state, the RF signal cannot be transmitted to the fourth signal port P4, which greatly increases the isolation between the first signal port P1 and the fourth signal port P4.

[0106] Similarly, the RF signal received by the second signal port P2 cannot be transmitted to the third signal port P3 through the first diode D1 and the second diode D2 in the second path selection unit 10B. Even if a very strong RF signal is connected to the second signal port P2 to make the first diode D1 conductive, the RF signal will be preferentially transmitted to the target path, and combined with the second diode D2 in the cut-off state, the RF signal cannot be transmitted to the third signal port P3, which greatly increases the isolation between the third signal port P3 and the second signal port P2.

[0107] In the right Figure 8 The switch module 1 shown in FIG. 1 performs a port isolation simulation test between the first signal port P1 and the fourth signal port P4, and the following results can be obtained: Fig. 9 The simulation results are shown in Figure 2. Fig. 9 The horizontal axis in is the frequency of the radio frequency signal connected to the first signal port P1, and the unit is GHz. Fig. 9 The vertical axis in is the difference in magnitude (ie, isolation) between the radio frequency signal received from the fourth signal port P4 and the radio frequency signal input from the first signal port P1 , and the unit is dB. Fig. 9 The worst isolation m4 between the first signal port P1 and the fourth signal port P4 is indicated. Fig. 9 It can be seen that the isolation between the first signal port P1 and the fourth signal port P4 is at least 148 dB.

[0108] In the right Figure 8 The switch module 1 shown in the figure performs a port isolation simulation test between the second signal port P2 and the third signal port P3, and the following can be obtained: Fig.10 The simulation results are shown in Figure 2. Fig.10 The horizontal axis in is the frequency of the radio frequency signal connected to the second signal port P2, in GHz. Fig.10 The vertical axis in is the difference in magnitude (ie, isolation) between the radio frequency signal received from the third signal port P3 and the radio frequency signal input from the second signal port P2, and the unit is dB. Fig.10 The worst isolation m3 between the second signal port P2 and the third signal port P3 is indicated. Fig.10 It can be seen that the isolation between the second signal port P2 and the third signal port P3 is at least 114 dB.

[0109] In the right Figure 8 The switch module 1 shown in the figure performs a radio frequency insertion loss simulation test between the first signal port P1 and the second signal port P2, and the following can be obtained: Fig.11 The simulation results are shown in Figure 2. Fig.11 The horizontal axis in is the frequency of the radio frequency signal connected to the first signal port P1, and the unit is GHz. Fig.11 The vertical axis in is the difference in magnitude (ie, RF insertion loss) between the RF signal received from the second signal port P2 and the RF signal input from the first signal port P1 , and the unit is dB. Fig.11 Indicates the maximum RF insertion loss m1 between the first signal port P1 and the second signal port P2. Fig.11 It can be seen that the radio frequency insertion loss between the first signal port P1 and the second signal port P2 is at least less than 1.1 dB.

[0110] In the right Figure 8 The switch module 1 shown in the figure performs a radio frequency insertion loss simulation test between the fourth signal port P4 and the third signal port P3, and the following can be obtained: Fig.12 The simulation results are shown in Figure 2. Fig.12 The horizontal axis in is the frequency of the radio frequency signal connected to the fourth signal port P4, and the unit is GHz. Fig.12 The vertical axis in is the difference in magnitude (ie, RF insertion loss) between the RF signal received from the third signal port P3 and the RF signal input from the fourth signal port P4, in dB. Fig.12 The maximum RF insertion loss m2 between the fourth signal port P4 and the third signal port P3 is indicated. Fig.12 It can be seen that the radio frequency insertion loss between the fourth signal port P4 and the third signal port P3 is at least less than 1.1 dB.

[0111] Please refer to Fig.13 When the control terminal C of the switch module 1 receives a reverse voltage signal V` of 0V (i.e., a cutoff control signal), the control terminals of the first path selection unit 10A and the third path selection unit 10C can receive the reverse voltage signal V`, and the control terminals of the second path selection unit 10B and the fourth path selection unit 10D can receive the forward voltage signal V.

[0112] In this case, in the first path selection unit 10A and the third path selection unit 10C, the first diode D1, the second diode D2, and the third diode D3 are cut off. In the second path selection unit 10B and the fourth path selection unit 10D, the first diode D1, the second diode D2, and the third diode D3 are turned on. The first signal port P1 and the second signal port P2 are disconnected, the fourth signal port P4 and the third signal port P3 are disconnected, the first signal port P1 and the fourth signal port P4 are turned on, and the second signal port P2 and the third signal port P3 are turned on.

[0113] In the right Fig.13 The switch module 1 shown in the figure performs a port isolation simulation test between the first signal port P1 and the second signal port P2, and the following can be obtained: Fig.14 The simulation results are shown in Figure 2. Fig.14 The horizontal axis in is the frequency of the radio frequency signal connected to the first signal port P1, and the unit is GHz. Fig.14 The vertical axis in is the difference in magnitude (ie, isolation) between the radio frequency signal received from the second signal port P2 and the radio frequency signal input from the first signal port P1 , and the unit is dB. Fig.14 The worst isolation m2 between the first signal port P1 and the second signal port P2 is indicated. Fig.14 It can be seen that the isolation between the first signal port P1 and the second signal port P2 is at least 131.641 dB.

[0114] In the right Fig.13 The switch module 1 shown in FIG. 1 performs a port isolation simulation test between the fourth signal port P4 and the third signal port P3, and the following results can be obtained: Fig.15 The simulation results are shown in Figure 2. Fig.15 The horizontal axis in is the frequency of the radio frequency signal connected to the fourth signal port P4, and the unit is GHz. Fig.15 The vertical axis in is the difference in magnitude (ie, isolation) between the radio frequency signal received from the third signal port P3 and the radio frequency signal input from the fourth signal port P4, and the unit is dB. Fig.15 The worst isolation m1 between the fourth signal port P4 and the third signal port P3 is indicated. Fig.15 It can be seen that the isolation between the fourth signal port P4 and the third signal port P3 is at least 131.640 dB.

[0115] In the right Fig.13 The switch module 1 shown in the figure performs a radio frequency insertion loss simulation test between the first signal port P1 and the fourth signal port P4, and the following can be obtained: Fig.16 The simulation results are shown in Figure 2. Fig.16 The horizontal axis in is the frequency of the radio frequency signal connected to the first signal port P1, and the unit is GHz. Fig.16The vertical axis in is the difference in magnitude (ie, RF insertion loss) between the RF signal received from the fourth signal port P4 and the RF signal input from the first signal port P1 , and the unit is dB. Fig.16 Indicates the maximum RF insertion loss m3 between the first signal port P1 and the fourth signal port P4. Fig.16 It can be seen that the radio frequency insertion loss between the first signal port P1 and the fourth signal port P4 is at least less than 1.1 dB.

[0116] In the right Fig.13 The switch module 1 shown in the figure performs a radio frequency insertion loss simulation test between the second signal port P2 and the third signal port P3, and the following can be obtained: Fig.17 The simulation results are shown in Figure 2. Fig.17 The horizontal axis in is the frequency of the radio frequency signal connected to the second signal port P2, in GHz. Fig.17 The vertical axis in is the difference in magnitude (ie, RF insertion loss) between the RF signal received from the third signal port P3 and the RF signal input from the second signal port P2, in dB. Fig.17 The maximum RF insertion loss m4 between the second signal port P2 and the third signal port P3 is indicated. Fig.17 It can be seen that the radio frequency insertion loss between the second signal port P2 and the third signal port P3 is at least less than 1.1 dB.

[0117] In summary, the switch module provided by the embodiment of the present application includes: four path selection units and four ports. Each path selection unit includes: a control end, a first one-way conducting component and a second one-way conducting component. The first one-way conducting component is connected to the first port, and the first one-way conducting component is also connected to the second port through the second one-way conducting component. In this technical solution, the first one-way conducting component and the second one-way conducting component are used to be synchronously turned on or off under the control of the control signal connected to the control end, and the forward conduction directions of the first one-way conducting component and the second one-way conducting component are opposite. Therefore, in the case where the first one-way conducting component and the second one-way conducting component are synchronously cut off, even if one of the first one-way conducting component and the second one-way conducting component is turned on due to receiving a stronger signal, so as to transmit a signal to the other one-way conducting component. However, the other one-way conducting component can also effectively cut off the transmitted signal due to being in a cut-off state. Therefore, the structure of the path selection unit can effectively enhance the isolation between the two ports connected thereto, so as to enhance the port isolation performance of the switch module.

[0118] The embodiment of the present application further provides an electronic device, the electronic device comprising any switch module provided in the embodiment of the present application. Optionally, the electronic device may include Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 or Fig.13 The electronic device includes the switch module provided by the embodiment of the present application, thereby achieving the same technical effect.

[0119] In the electronic device provided in the embodiment of the present application, the switch module includes: four path selection units and four ports. Each path selection unit includes: a control end, a first one-way conducting component and a second one-way conducting component. The first one-way conducting component is connected to the first port, and the first one-way conducting component is also connected to the second port through the second one-way conducting component. In the technical scheme, the first one-way conducting component and the second one-way conducting component are used to synchronously conduct or cut off under the control of the control signal connected to the control end, and the forward conduction directions of the first one-way conducting component and the second one-way conducting component are opposite. Therefore, in the case where the first one-way conducting component and the second one-way conducting component are synchronously cut off, even if one of the first one-way conducting component and the second one-way conducting component is turned on due to receiving a stronger signal, so as to transmit a signal to the other one-way conducting component. However, the other one-way conducting component can also effectively cut off the transmitted signal due to being in a cut-off state. Therefore, the structure of the path selection unit can effectively enhance the isolation between the two ports connected thereto, so as to enhance the port isolation performance of the switch module.

[0120] The electronic device in the embodiment of the present application may be a terminal, or may be other devices other than a terminal. For example, the electronic device may be a mobile phone, a tablet computer, a laptop computer, a PDA, a vehicle-mounted electronic device, a mobile Internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a personal digital assistant (PDA), etc., and may also be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine or a self-service machine, etc., which is not specifically limited in the embodiment of the present application.

[0121] The electronic device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0122] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0123] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0124] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A switch module, characterized in that: include: Four channel selection units and four ports; Each of the path selection units is connected to two different ports among the four ports, and each of the path selection units includes: a control end, a first one-way conducting component and a second one-way conducting component, wherein the first one-way conducting component is connected to the first port, and the first one-way conducting component is also connected to the second port through the second one-way conducting component, and the control end is connected to the first one-way conducting component and the second one-way conducting component respectively. Among them, the first unidirectional conducting component and the second unidirectional conducting component are used to be synchronously turned on or off under the control of the control signal connected to the control end, and the forward conduction directions of the first unidirectional conducting component and the second unidirectional conducting component are opposite, and the first port and the second port are two different ports among the four ports.

2. The switch module according to claim 1, characterized in that: Each of the path selection units further includes: a first filter component and a second filter component; The first filter component and the control end are both connected to the first unidirectional conductive component, and the first filter component is also connected to the first port to block the control signal from being transmitted to the first port; The second filter component and the control end are both connected to the second unidirectional conductive component, and the second filter component is also connected to the second port to block the control signal from being transmitted to the second port.

3. The switch module according to claim 2, characterized in that: The first unidirectional conductive component comprises: a first diode, and the second unidirectional conductive component comprises: a second diode; The anode of the first diode is connected to the first port, the cathode of the first diode is connected to the cathode of the second diode, the anode of the second diode is connected to the second port, and the control end is connected to the anodes of the first diode and the second diode respectively.

4. The switch module according to claim 3, characterized in that: The first filter component includes a first capacitor, and the second filter component includes a second capacitor; The first capacitor is connected to the first port and the anode of the first diode respectively, and the second capacitor is connected to the second port and the anode of the second diode respectively.

5. The switch module according to claim 1, characterized in that: Each of the passage selection units further includes: a flow guide component; One end of the flow guide component is connected to the first one-way conducting component and the second one-way conducting component respectively, and the other end of the flow guide component is grounded. The flow guide component is used to switch to an open circuit state when the first one-way conducting component and the second one-way conducting component are conducting, and to switch to a short circuit state when the first one-way conducting component and the second one-way conducting component are disconnected.

6. The switch module according to claim 5, characterized in that: The flow guiding component comprises: an impedance transformation component and a third unidirectional conducting component; One end of the impedance conversion element is connected to the first unidirectional conductive component and the second unidirectional conductive component, and the other end of the impedance conversion element is grounded through the third unidirectional conductive component. The third one-way conducting component is connected to the control end and is used to be turned on or off synchronously with the first one-way conducting component and the second one-way conducting component under the control of the control signal. The impedance conversion element is used to switch to an open circuit state by changing the characteristic impedance of the impedance conversion element when the third one-way conducting component is in a conducting state, and to switch to a short circuit state by changing the characteristic impedance of the impedance conversion element when the third one-way conducting component is in a cut-off state.

7. The switch module according to claim 6, characterized in that: The impedance transformation element includes a 90° delay microstrip line.

8. The switch module according to claim 6, characterized in that: The third unidirectional conductive component comprises: a third diode; An anode of the third diode is connected to the impedance conversion element, and a cathode of the third diode is grounded.

9. The switch module according to claim 1, characterized in that: The control signal includes a conduction control signal and a cutoff control signal; the switch module also includes: a control unit; The control unit is connected to the control end of each of the path selection units, and is used to output the conduction control signal to the control ends of the first path selection unit and the third path selection unit, and output the cutoff control signal to the control ends of the second path selection unit and the fourth path selection unit when receiving the first conduction signal; and output the cutoff control signal to the control ends of the first path selection unit and the third path selection unit, and output the conduction control signal to the control ends of the second path selection unit and the fourth path selection unit when receiving the second conduction signal. The conduction control signal is used to control the first unidirectional conduction component and the second unidirectional conduction component in the received path selection unit to be synchronously conducted, and the cutoff control signal is used to control the first unidirectional conduction component and the second unidirectional conduction component in the received path selection unit to be synchronously cutoff. The first path selection unit, the second path selection unit, the third path selection unit and the fourth path selection unit constitute the four path selection units, and the four ports connected to the first path selection unit and the third path selection unit are different, and the four ports connected to the second path selection unit and the fourth path selection unit are different.

10. An electronic device, characterized in that: The electronic device comprises the switch module according to any one of claims 1 to 9.

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