Circuit board and electronic device using the same

Abstract

The application provides a circuit board and an electronic device using the same, and relates to the technical field of circuit board integration. The circuit board comprises: at least one first spring plate, which is adapted to be connected to an antenna feed end; a circuit board feed end; at least one first connecting circuit, each of which is connected between the corresponding first spring plate and the circuit board feed end; at least one second spring plate, which is adapted to be connected to an antenna ground end; a circuit board ground end; at least one second connecting circuit, each of which is connected between the corresponding second spring plate and the circuit board ground end; and a switch module, when the circuit board comprises a first matching sub-circuit and / or a second matching sub-circuit, the switch module, each first matching sub-circuit and second matching sub-circuit are configured to make each first matching sub-circuit and second matching sub-circuit conductive or non-conductive when the circuit board is connected to the antenna, so that the antenna resonant frequency of the antenna is a specified frequency.

Description

Technical Field

[0001] This application relates primarily to the field of circuit board integration technology, and more particularly to a circuit board and the electronic devices to which it is applicable. Background Technology

[0002] With the continuous upgrading of electronic terminal products, such as mobile phones and IoT devices, these products need to meet increasingly diverse user needs, such as requirements for different sizes and functions. In electronic terminal products of different sizes and functions, the antenna is affected by the overall device environment, and typically one set of antenna and matching circuitry corresponds to one electronic terminal product. When the size and function of a product change, the antenna and matching circuitry need to be changed accordingly. Changing the antenna is relatively easy, but the matching circuitry is located on the circuit board, and the design and manufacturing cycle of the circuit board is relatively long and costly during product development. Therefore, for rapidly iterating products and product series, the design and manufacturing of the corresponding circuit board has a significant impact on the product's time-to-market and price competitiveness.

[0003] Therefore, there is an urgent need for a circuit board that is compatible with antennas for different products. Utility Model Content

[0004] The technical problem to be solved by this application is to provide a circuit board and its applicable electronic devices, so that different types of electronic devices can use the same circuit board to connect with the corresponding antenna, so as to achieve better compatibility.

[0005] To address the aforementioned technical problems, this application provides a circuit board suitable for connection to different antennas. Each antenna includes an antenna feed terminal and an antenna ground terminal. The circuit board includes: at least one first spring contact adapted to connect to the antenna feed terminal; a circuit board feed terminal; at least one first connection circuit, each first connection circuit including a first direct-connect wire or at least one first matching sub-circuit, each first connection circuit being connected between a corresponding first spring contact and the circuit board feed terminal; at least one second spring contact adapted to connect to the antenna ground terminal; a circuit board ground terminal; and at least one second connection circuit, the second connection circuit including a second direct-connect wire or at least one first matching sub-circuit. One less second matching sub-circuit is provided. Each second connection circuit is connected between the corresponding second spring and the ground terminal of the circuit board. The first spring and the second spring are arranged sequentially in the circuit board. When the circuit board includes the first matching sub-circuit and / or the second matching sub-circuit, the circuit board also includes a switch module, which is connected to each first matching sub-circuit and / or each second matching sub-circuit. When the switch module, each first matching sub-circuit, and each second matching sub-circuit are configured to connect the circuit board to the antenna, the switch module turns each first matching sub-circuit and the second matching sub-circuit on or off, so that the antenna resonant frequency is the specified frequency.

[0006] Optionally, the first matching sub-circuit and the second matching sub-circuit respectively include a capacitor and / or an inductor.

[0007] Optionally, the switch module includes: a first switch, one end of which is connected to a first spring contact, and the other end of which is connected to one end of each first matching sub-circuit respectively. The first switch is adapted to connect or disconnect each first matching sub-circuit from the first spring contact respectively.

[0008] Optionally, at least one first matching sub-circuit is grounded, and the switching module further includes: a second switch, one end of which is connected to the power supply terminal of the circuit board, and the other end of which is connected to the other end of each first matching sub-circuit respectively. The second switch is adapted to connect or disconnect each first matching sub-circuit from the power supply terminal of the circuit board respectively.

[0009] Optionally, the switch module includes: a first switch, one end of which is connected to the power supply terminal of the circuit board, and the other end of which is connected to one end of each of the first matching sub-circuits respectively. The first switch is adapted to connect or disconnect each of the first matching sub-circuits from the power supply terminal of the circuit board respectively.

[0010] Optionally, at least one first matching sub-circuit is grounded, and the switching module further includes: a second switch, one end of which is connected to the first spring contact, and the other end of which is connected to the other end of each first matching sub-circuit respectively. The second switch is adapted to connect or disconnect each first matching sub-circuit from the first spring contact respectively.

[0011] Optionally, the switch module includes: a third switch, one end of which is connected to the second spring contact, and the other end of which is connected to one end of each of the second matching sub-circuits respectively. The third switch is adapted to connect or disconnect each of the second matching sub-circuits from the second spring contact respectively.

[0012] Optionally, at least one second matching sub-circuit is grounded, and the second connection circuit further includes: a fourth switch, one end of which is connected to the ground terminal of the circuit board, and the other end of which is connected to the other end of each second matching sub-circuit respectively. The fourth switch is adapted to connect or disconnect each second matching sub-circuit from the ground terminal of the circuit board respectively.

[0013] Optionally, the switch module includes: a third switch, one end of which is connected to the ground terminal of the circuit board, and the other end of which is connected to one end of each of the second matching sub-circuits respectively. The third switch is adapted to connect or disconnect each of the second matching sub-circuits from the ground terminal of the circuit board respectively.

[0014] Optionally, at least one second matching sub-circuit is grounded, and the second connection circuit further includes: a fourth switch, one end of which is connected to the second spring contact, and the other end of which is connected to the other end of each of the second matching sub-circuits respectively. The fourth switch is adapted to connect or disconnect each of the second matching sub-circuits from the second spring contact respectively.

[0015] To solve the above-mentioned technical problems, this application provides an electronic device, which includes: an antenna, including an antenna feed terminal and an antenna ground terminal; and the aforementioned circuit board, which is connected to the antenna feed terminal and the antenna ground terminal respectively.

[0016] Optionally, the electronic device further includes a control module adapted to enable or disable the switching module.

[0017] Compared with the prior art, this application has the following advantages: a first connection circuit is set between the antenna feed terminal and the circuit board feed terminal, and a second connection circuit is set between the antenna ground terminal and the circuit board ground terminal. The first matching sub-circuit in each of the first connection circuits and the second matching sub-circuit in each of the second connection circuits are turned on or off respectively through the switching module, so that the antenna resonant frequency of any antenna connected to the circuit board is the specified frequency, thereby improving the compatibility of the circuit board and enabling different electronic devices to use the circuit board to improve the utilization rate of the circuit board. Attached Figure Description

[0018] The accompanying drawings are included to provide a further understanding of this application; they are incorporated into and constitute a part of this application. The drawings illustrate embodiments of this application and, together with this specification, serve to explain the principles of this application. In the drawings:

[0019] Figure 1 This is a schematic diagram of the circuit structure of a circuit board and an antenna according to an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the circuit structure of a circuit board and an antenna according to an embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the circuit structure of a circuit board and an antenna according to an embodiment of this application;

[0022] Figure 4 This is a schematic diagram of the circuit structure of a circuit board and an antenna according to an embodiment of this application;

[0023] Figure 5 This is a schematic diagram of the circuit structure of a circuit board and an antenna according to an embodiment of this application;

[0024] Figure 6 This is a schematic diagram of the circuit structure of a circuit board and an antenna according to an embodiment of this application;

[0025] Figure 7 This is a schematic diagram of the circuit structure of a circuit board and an antenna according to an embodiment of this application; and

[0026] Figure 8 This is a structural block diagram of an electronic device according to an embodiment of this application. Detailed Implementation

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this application. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0028] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not specifically singular and may include plural forms. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0029] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0030] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0031] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0032] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. In addition, although the terminology used in this application is selected from commonly known and used terms, some terms mentioned in this application's specification may have been chosen by the applicant according to his or her judgment, and their detailed meanings are explained in the relevant sections of this description. Moreover, this application should be understood not only through the actual terms used, but also through the meaning implied by each term.

[0033] It should be understood that when a component is referred to as "on another component," "connected to another component," "coupled to another component," or "in contact with another component," it can be directly on, connected to, coupled to, or in contact with that other component, or there may be an intervening component. In contrast, when a component is referred to as "directly on another component," "directly connected to," "directly coupled to," or "directly in contact with" another component, there is no intervening component. Similarly, when a first component is referred to as "electrically contacting" or "electrically coupled to" a second component, there is an electrical path between the first and second components that allows current to flow. This electrical path may include capacitors, coupled inductors, and / or other components that allow current to flow, even if there is no direct contact between the conductive components.

[0034] This application proposes a circuit board adapted to be connected to different antennas, wherein the antenna includes an antenna feed terminal and an antenna ground terminal, the antenna is adapted to receive external signals, and the antenna feed terminal is adapted to transmit the signals.

[0035] Example 1

[0036] Figure 1 This is a schematic diagram of a circuit board 11 and an antenna 21 according to an embodiment of this application. Figure 1 As shown, the circuit board 11 includes a first spring contact 111, a circuit board feed terminal 112, a first connection circuit 113, multiple second spring contacts 114, a circuit board ground terminal GND, multiple second connection circuits 115, and a switch module 116. The switch module 116 includes multiple third switches K3. In this embodiment, one end of the first spring contact 111 is adapted to be connected to the antenna feed terminal 211 of the antenna 21. The first connection circuit 113 includes a first direct connection wire 1133. One end of the first direct connection wire 1133 is connected to the other end of the first spring contact 111, and the other end of the first direct connection wire 1133 is connected to the circuit board feed terminal 112. In this embodiment, the circuit board feed terminal 112 is adapted to continue transmitting the signal transmitted by the antenna feed terminal 211 to subsequent modules or components, so that the circuit board 11 can process the signal received by the antenna 21.

[0037] Continue to refer to Figure 1 One end of the second spring 114 is adapted to be connected to the antenna ground terminal 212 of the antenna 21, and the other end of the second spring 114 is connected to one end of the third switch K3. Each second connection circuit 115 includes four second matching sub-circuits 1151, each second matching sub-circuit 1151 includes a resonant adjustment element, and the resonant adjustment element includes a capacitor 1152. Understandably, Figure 1The document only exemplarily illustrates one capacitor 1152, one second matching sub-circuit 1151, and one second connection circuit 115. It should be noted that this application does not limit the type of components in the resonant adjustment element of the second matching sub-circuit; in some embodiments, the resonant adjustment element in the second matching sub-circuit may include an inductor or a resistor. Correspondingly, this application does not limit the number of second matching sub-circuits in the second connection circuit; in some embodiments, each second connection circuit may contain the same or different numbers of second matching sub-circuits.

[0038] Continue to refer to Figure 1 In this embodiment, one end of each capacitor 1152 is connected to the other end of the third switch K3, and the other end of each capacitor 1152 is connected to the ground terminal GND of the circuit board. In this embodiment, the third switch K3 is adapted to connect or disconnect each capacitor 1152 from the second contact spring 114. It should be noted that this application does not limit the connection method between the third switch and the second matching sub-circuit; in some embodiments, the third switch is connected between the second matching sub-circuit and the ground terminal of the circuit board. Furthermore, Figure 1 The example shows multiple circuit board ground terminals GND, but these circuit board ground terminals GND can refer to the same circuit board ground, that is, the other end of all capacitors 1152 is connected to the same circuit board ground.

[0039] Continue to refer to Figure 1 In this embodiment, based on the spacing requirements of the antenna feed terminal 211 and antenna ground terminal 212 of different antennas 21, the first spring contacts 111 and second spring contacts 114 are arranged sequentially on the circuit board 11, so that each second spring contact 114 has a different spacing with the first spring contact 111 and corresponds to each spacing requirement, thereby enabling the antenna 21 to have better performance after being connected to the circuit board 11. In addition, for each antenna 21, a corresponding second matching sub-circuit 1151 is set according to the second spring contact 114 it is connected to. Subsequently, the switching module 116 controls the conduction and cutoff of each second matching sub-circuit 1151 connected to the antenna 21, so that the antenna resonant frequency of the antenna 21 is the specified frequency.

[0040] Example 2

[0041] Figure 2 This is a schematic diagram of a circuit board 11 and an antenna 21 according to an embodiment of this application. Figure 2As shown, the circuit board 11 includes multiple first spring contacts 111, a circuit board feed terminal 112, multiple first connection circuits 113, a second spring contact 114, a circuit board ground terminal GND, a second connection circuit 115, and a switch module 116. The switch module 116 includes multiple first switches K1. In this embodiment, one end of the first spring contact 111 is adapted to be connected to the antenna feed terminal 211 of the antenna 21, and the other end of the first spring contact 111 is connected to one end of the corresponding first switch K1. Each first connection circuit 113 includes four first matching sub-circuits 1131, each first matching sub-circuit 1131 includes a resonant adjustment element, and the resonant adjustment element includes a capacitor 1132. It is understood that... Figure 2 Only one capacitor 1132, one first matching sub-circuit 1131, and one first connection circuit 113 are exemplaryly labeled. It should be noted that this application does not limit the type of components in the resonant modulation element of the first matching sub-circuit; in some embodiments, the resonant modulation element in the first matching sub-circuit may include an inductor or a resistor. Correspondingly, this application does not limit the number of first matching sub-circuits in the first connection circuit; in some embodiments, each first connection circuit may contain the same or different numbers of first matching sub-circuits. Continuing to refer to... Figure 2 In this embodiment, one end of each capacitor 1132 is connected to the other end of the first switch K1, and the other end of each capacitor 1132 is connected to the circuit board power supply terminal 112. In this embodiment, the first switch K1 is adapted to connect or disconnect each capacitor 1132 from the first spring contact 111. It should be noted that the function of the circuit board power supply terminal 112 in this embodiment is the same as that of the circuit board power supply terminal in Embodiment 1, and will not be repeated here.

[0042] Continue to refer to Figure 2 One end of the second spring 114 is adapted to be connected to the antenna ground terminal 212 of the antenna 21. The second connection circuit 115 includes a second direct connection wire 1153. One end of the second direct connection wire 1153 is connected to the other end of the second spring 114, and the other end of the second direct connection wire 1153 is connected to the ground terminal GND of the circuit board.

[0043] Continue to refer to Figure 2In this embodiment, based on the spacing requirements of the antenna feed terminal 211 and antenna ground terminal 212 of different antennas 21, the first spring contacts 111 and second spring contacts 114 are arranged sequentially on the circuit board 11, so that each first spring contact 111 and second spring contact 114 has a different spacing corresponding to each spacing requirement, thereby enabling the antenna 21 to have better performance after being connected to the circuit board 11. In addition, for each antenna 21, a corresponding first matching sub-circuit 1131 is set according to the first spring contact 111 it is connected to. Subsequently, the switching module 116 controls the conduction and cutoff of each first matching sub-circuit 1131 connected to the antenna 21, thereby making the antenna resonant frequency of the antenna 21 the specified frequency.

[0044] Example 3

[0045] Figure 3 This is a schematic diagram of a circuit board 11 and an antenna 21 according to an embodiment of this application. Figure 3 As shown, the circuit board 11 includes multiple first spring contacts 111, a circuit board power supply terminal 112, multiple first connection circuits 113, multiple second spring contacts 114, a circuit board ground terminal GND, multiple second connection circuits 115, and a switch module 116. The switch module 116 includes multiple first switches K1 and multiple third switches K3. In this embodiment, the arrangement of the first spring contacts 111, the circuit board power supply terminal 112, the multiple first connection circuits 113, and the multiple first switches K1 is the same as that in Embodiment 2, and will not be repeated here. Correspondingly, in this embodiment, the arrangement of the second spring contacts 114, the circuit board ground terminal GND, the multiple second connection circuits 115, and the multiple third switches K3 is the same as that in Embodiment 1, and will not be repeated here.

[0046] Continue to refer to Figure 3 In this embodiment, based on the spacing requirements of the antenna feed terminal 211 and antenna ground terminal 212 of different antennas 21, the first spring contacts 111 and second spring contacts 114 are arranged sequentially on the circuit board 11. This ensures that the spacing requirements of each antenna 21 are met by the spacing between at least one first spring contact 111 and second spring contact 114, thereby achieving better performance after the antenna 21 is connected to the circuit board 11. Furthermore, for each antenna 21, a corresponding first matching sub-circuit 1131 and a corresponding second matching sub-circuit 1151 are configured according to the first spring contact 111 and second spring contact 114 connected to it. Subsequently, the switching module 116 controls the on / off state of each first matching sub-circuit 1131 and second matching sub-circuit 1151 connected to the antenna 21, thereby ensuring that the antenna resonant frequency of the antenna 21 is the specified frequency.

[0047] Example 4

[0048] Figure 4 This is a schematic diagram of a circuit board 11 and an antenna 21 according to an embodiment of this application. Figure 4 As shown, the circuit board 11 includes a first spring contact 111, a circuit board feed terminal 112, a first connection circuit 113, a second spring contact 114, a circuit board ground terminal GND, multiple second connection circuits 115, and a switch module 116. The switch module 116 includes multiple third switches K3. In this embodiment, one end of the first spring contact 111 is adapted to be connected to the antenna feed terminal 211 of the antenna 21. The first connection circuit 113 includes a first direct connection wire 1133. One end of the first direct connection wire 1133 is connected to the other end of the first spring contact 111, and the other end of the first direct connection wire 1133 is connected to the circuit board feed terminal 112. It should be noted that the function of the circuit board feed terminal 112 in this embodiment is the same as that of the circuit board feed terminal in Embodiment 1, and will not be repeated here.

[0049] Continue to refer to Figure 4 One end of the second spring 114 is adapted to be connected to the antenna ground terminal 212 of the antenna 21, and the other end of the second spring 114 is connected to one end of each of the third switches K3. Each second connection circuit 115 includes four second matching sub-circuits 1151, each second matching sub-circuit 1151 includes a resonant adjustment element, and the resonant adjustment element includes a capacitor 1152. Understandably, Figure 4 Only one capacitor 1152, one second matching sub-circuit 1151, and one second connection circuit 115 are exemplarily labeled in this embodiment. In this embodiment, one end of each capacitor 1152 is connected to the other end of the third switch K3, and the other end of each capacitor 1152 is connected to the ground terminal GND of the circuit board. In this embodiment, the third switch K3 is adapted to connect or disconnect each capacitor 1152 from the second spring contact 114. It should be noted that... Figure 4 The example shows multiple circuit board ground terminals GND, but these circuit board ground terminals GND can refer to the same circuit board ground, that is, the other end of all capacitors 1152 is connected to the same circuit board ground.

[0050] Continue to refer to Figure 4In this embodiment, the spacing between the antenna feed terminal 211 and the antenna ground terminal 212 of different antennas 21 is required to be the same. Therefore, only one first spring contact 111 and one second spring contact 114 are set on the circuit board 11, and the spacing between the second spring contact 114 and the first spring contact 111 corresponds to the above-mentioned spacing requirements, so that the antenna 21 can have better performance after being connected to the circuit board 11. In addition, a corresponding second matching sub-circuit 1151 is set for each antenna 21. Subsequently, the switching module 116 controls the conduction and cutoff of each second matching sub-circuit 1151 connected to the antenna 21, so that the antenna resonant frequency of the antenna 21 is the specified frequency. It can be understood that the switching module can make multiple second matching sub-circuits 1151 conduct simultaneously to achieve more precise frequency adjustment.

[0051] Example 5

[0052] Figure 5 This is a schematic diagram of a circuit board 11 and an antenna 21 according to an embodiment of this application. Figure 5 As shown, the circuit board 11 includes a first spring contact 111, a circuit board feed terminal 112, multiple first connection circuits 113, a second spring contact 114, a circuit board ground terminal GND, a second connection circuit 115, and a switch module 116. The switch module 116 includes multiple first switches K1. In this embodiment, one end of the first spring contact 111 is adapted to be connected to the antenna feed terminal 211 of the antenna 21, and the other end of the first spring contact 111 is connected to one end of each of the first switches K1. Each first connection circuit 113 includes four first matching sub-circuits 1131, each first matching sub-circuit 1131 includes a resonant adjustment element, and the resonant adjustment element includes a capacitor 1132. It is understood that... Figure 5 Only one capacitor 1132, one first matching sub-circuit 1131, and one first connection circuit 113 are exemplaryly labeled in this embodiment. In this embodiment, one end of each capacitor 1132 is connected to the other end of the first switch K1, and the other end of each capacitor 1132 is connected to the circuit board power supply terminal 112. In this embodiment, the first switch K1 is adapted to connect or disconnect each capacitor 1132 from the first spring contact 111. It should be noted that the function of the circuit board power supply terminal 112 in this embodiment is the same as that of the circuit board power supply terminal in Embodiment 1, and will not be repeated here.

[0053] Continue to refer to Figure 5 One end of the second spring 114 is adapted to be connected to the antenna ground terminal 212 of the antenna 21. The second connection circuit 115 includes a second direct connection wire 1153. One end of the second direct connection wire 1153 is connected to the other end of the second spring 114, and the other end of the second direct connection wire 1153 is connected to the ground terminal GND of the circuit board.

[0054] Continue to refer to Figure 5In this embodiment, the spacing between the antenna feed terminal 211 and the antenna ground terminal 212 of different antennas 21 is required to be the same. Therefore, only one first spring contact 111 and one second spring contact 114 are set on the circuit board 11, and the spacing between the second spring contact 114 and the first spring contact 111 corresponds to the above-mentioned spacing requirements, so that the antenna 21 can have better performance after being connected to the circuit board 11. In addition, for each antenna 21, a corresponding first matching sub-circuit 1131 is set according to the first spring contact 111 it is connected to. Subsequently, the switching module 116 controls the conduction and cutoff of each first matching sub-circuit 1131 connected to the antenna 21, so that the antenna resonant frequency of the antenna 21 is the specified frequency. It can be understood that the switching module can make multiple first matching sub-circuits 1131 conduct simultaneously to achieve more precise frequency adjustment.

[0055] Example 6

[0056] Figure 6 This is a schematic diagram of a circuit board 11 and an antenna 21 according to an embodiment of this application. Figure 6 As shown, the circuit board 11 includes a first spring contact 111, a circuit board power supply terminal 112, multiple first connection circuits 113, a second spring contact 114, a circuit board ground terminal GND, multiple second connection circuits 115, and a switch module 116. The switch module 116 includes multiple first switches K1 and multiple third switches K3. In this embodiment, the arrangement of the first spring contact 111, the circuit board power supply terminal 112, the multiple first connection circuits 113, and the multiple first switches K1 is the same as that in Embodiment 5, and will not be repeated here. Correspondingly, in this embodiment, the arrangement of the second spring contact 114, the circuit board ground terminal GND, the multiple second connection circuits 115, and the multiple third switches K3 is the same as that in Embodiment 4, and will not be repeated here.

[0057] Continue to refer to Figure 6In this embodiment, the spacing between the antenna feed terminal 211 and the antenna ground terminal 212 of different antennas 21 is required to be the same. Therefore, only one first spring 111 and one second spring 114 are set on the circuit board 11, and the spacing between the second spring 114 and the first spring 111 corresponds to the above-mentioned spacing requirement, so that the antenna 21 can have better performance after being connected to the circuit board 11. In addition, for each antenna 21, a corresponding first matching sub-circuit 1131 and a corresponding second matching sub-circuit 1151 are set according to the first spring 111 and the second spring 114 connected to it. Subsequently, the switching module 116 controls the conduction and cutoff of each first matching sub-circuit 1131 and the second matching sub-circuit 1151 connected to the antenna 21, so that the antenna resonant frequency of the antenna 21 is the specified frequency. Understandably, compared to Embodiment 4 or Embodiment 5, the switching module can simultaneously turn on multiple first matching sub-circuits 1131 and multiple second matching sub-circuits 1151, thereby enabling the setting of fewer first matching sub-circuits and second matching sub-circuits while achieving the same frequency modulation effect, or achieving a more precise frequency modulation effect while setting the same number of first matching sub-circuits and second matching sub-circuits.

[0058] Example 7

[0059] Figure 7 This is a schematic diagram of a circuit board 11 and an antenna 21 according to an embodiment of this application. Figure 7 As shown, the circuit board 11 includes a first spring contact 111, a circuit board feed terminal 112, multiple first connection circuits 113, a second spring contact 114, a circuit board ground terminal GND, a second connection circuit 115, and a switch module 116. The switch module 116 includes multiple first switches K1 and multiple second switches K2. In this embodiment, one end of the first spring contact 111 is adapted to be connected to the antenna feed terminal 211 of the antenna 21, and the other end of the first spring contact 111 is connected to one end of each of the first switches K1. Each first connection circuit 113 includes two first matching sub-circuits 1131, and each first matching sub-circuit 1131 includes a resonant adjustment element, which includes capacitors C1, C2, C3, C4, and C5. Specifically, capacitors C1, C2, and C3 are connected in series, one end of capacitor C4 is grounded, and the other end of capacitor C4 is connected to capacitors C1 and C2 respectively. One end of capacitor C5 is grounded, and the other end of capacitor C5 is connected to capacitors C2 and C3 respectively. Understandable. Figure 7Only one first matching sub-circuit 1131 and one first connection circuit 113 are exemplaryly labeled. In this embodiment, one end of capacitor C1 is connected to the other end of the first switch K1, one end of capacitor C3 is connected to one end of the second switch K2, and the other end of each second switch K2 is connected to the circuit board power supply terminal 112. In this embodiment, the first switch K1 is adapted to connect or disconnect the first matching sub-circuit 1131 from the first spring contact 111, and the second switch K2 is adapted to connect or disconnect the first matching sub-circuit 1131 from the circuit board power supply terminal 112. It should be noted that the function of the circuit board power supply terminal 112 in this embodiment is the same as that in Embodiment 1, and will not be repeated here. In addition, this application does not limit the setting position of the first switch and the second switch. In some embodiments, the first switch is connected between the first matching sub-circuit and the circuit board power supply terminal, and the second switch is connected between the first matching sub-circuit and the first spring contact.

[0060] Continue to refer to Figure 7 One end of the second spring 114 is adapted to be connected to the antenna ground terminal 212 of the antenna 21. The second connection circuit 115 includes a second direct connection wire 1153. One end of the second direct connection wire 1153 is connected to the other end of the second spring 114, and the other end of the second direct connection wire 1153 is connected to the ground terminal GND of the circuit board.

[0061] Continue to refer to Figure 7 In this embodiment, the spacing between the antenna feed terminal 211 and the antenna ground terminal 212 of different antennas 21 is required to be the same. Therefore, only one first spring contact 111 and one second spring contact 114 are set on the circuit board 11, and the spacing between the second spring contact 114 and the first spring contact 111 corresponds to the above-mentioned spacing requirements, so that the antenna 21 can have better performance after being connected to the circuit board 11. In addition, for each antenna 21, a corresponding first matching sub-circuit 1131 is set according to the first spring contact 111 it is connected to. Subsequently, the switching module 116 controls the conduction and cutoff of each first matching sub-circuit 1131 connected to the antenna 21, so that the antenna resonant frequency of the antenna 21 is the specified frequency. It can be understood that the switching module 116 can make multiple first matching sub-circuits 1131 conduct simultaneously to achieve more precise frequency adjustment.

[0062] Furthermore, this application is not limited to grounding only the first connection circuit; in some embodiments, the second connection circuit is grounded, and the switch module includes a fourth switch. For example, in some embodiments where the second connection circuit is grounded, one end of the third switch is connected to the second contact spring, and the other end of the third switch is connected to one end of each of the second matching sub-circuits; one end of the fourth switch is connected to the circuit board ground, and the other end of the fourth switch is connected to the other end of each of the second matching sub-circuits. Conversely, in other embodiments where the second connection circuit is grounded, one end of the third switch is connected to the circuit board ground, and the other end of the third switch is connected to one end of each of the second matching sub-circuits; one end of the fourth switch is connected to the second contact spring, and the other end of the fourth switch is connected to the other end of each of the second matching sub-circuits.

[0063] It should be noted that the circuit board in the above embodiments is a PCB board, but this application does not limit the type of circuit board. For example, in some embodiments, the circuit board is a flexible circuit board. Furthermore, in the above embodiments, the first switch, second switch, third switch, and fourth switch are mounted on the circuit board using a surface mount method, but this application does not limit the method of switch mounting. In some embodiments, the switches are mounted on the circuit board using a through-hole mounting method. The first switch, second switch, third switch, and fourth switch in the above embodiments may include a single-pole single-throw switch, a single-pole multi-throw switch, or a multi-pole multi-throw switch, wherein the throwing terminal is adapted to be connected to the first matching sub-circuit or the second matching sub-circuit. However, this application does not limit the type of switch; in some embodiments, the first switch, second switch, third switch, and fourth switch may also be an adjustable capacitive switch.

[0064] Another aspect of this application proposes a method such as Figure 8 The electronic device 100 shown is an example. Figure 8 As shown, the electronic device 100 includes a circuit board 11, an antenna 21, and a control module 31. The circuit board 11 has the structure of a circuit board in any of the above embodiments and is connected to the antenna feed terminal and ground terminal of the antenna 21, respectively, thereby enabling the electronic device 100 to receive external signals. The control module 31 is adapted to operate or deactivate the switching module in the circuit board 11. Specifically, the control module 31 generates a switching signal based on the product type unique information code of the electronic device 100, causing each of the first, second, third, and fourth switches to turn off or on, thereby causing the antenna resonant frequency of the antenna 21 corresponding to the electronic device 100 to be a specified frequency. It should be noted that in this embodiment, the product type unique information code is pre-set and stored in the data storage medium of the electronic device 100.

[0065] The basic concepts have been described above. Obviously, for those skilled in the art, the above disclosure is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0066] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic related to at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0067] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the present application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0068] Although this application has been described with reference to specific embodiments, those skilled in the art should recognize that the above embodiments are only used to illustrate this application, and various equivalent changes or substitutions can be made without departing from the spirit of this application. Therefore, any changes or modifications to the above embodiments within the essential spirit of this application will fall within the scope of the claims of this application.

Claims

1. A circuit board, characterized in that, The circuit board is adapted to be connected to different antennas, each antenna including an antenna feed terminal and an antenna ground terminal, and the circuit board includes: At least one first spring clip, the first spring clip being adapted to be connected to the antenna feed terminal; Circuit board power supply terminal; At least one first connection circuit, the first connection circuit including a first direct connection wire or at least one first matching sub-circuit, each of the first connection circuits being connected between the corresponding first spring and the power supply terminal of the circuit board; At least one second spring clip, the second spring clip being adapted to be connected to the grounding terminal of the antenna; Circuit board ground terminal; At least one second connection circuit, the second connection circuit including a second direct connection wire or at least one second matching sub-circuit, each of the second connection circuits being connected between the corresponding second spring and the ground terminal of the circuit board. The first and second spring contacts are arranged sequentially in the circuit board. When the circuit board includes the first matching sub-circuit and / or the second matching sub-circuit, the circuit board further includes: A switching module is connected to each of the first matching sub-circuits and / or each of the second matching sub-circuits respectively. When the switching module, each of the first matching sub-circuits and each of the second matching sub-circuits are configured such that when the circuit board is connected to the antenna, the switching module turns each of the first matching sub-circuits and the second matching sub-circuits on or off respectively, so that the antenna resonant frequency of the antenna is a specified frequency.

2. The circuit board as described in claim 1, characterized in that, The first matching sub-circuit and the second matching sub-circuit respectively include a capacitor and / or an inductor.

3. The circuit board as described in claim 1, characterized in that, The switching module includes: A first switch, one end of which is connected to the first spring contact, and the other end of which is connected to one end of each of the first matching sub-circuits respectively. The first switch is adapted to connect or disconnect each of the first matching sub-circuits from the first spring contact respectively.

4. The circuit board as described in claim 3, characterized in that, At least one of the first matching sub-circuits is grounded, and the switching module further includes: The second switch has one end connected to the power supply terminal of the circuit board, and the other end connected to the other end of each of the first matching sub-circuits. The second switch is adapted to connect or disconnect each of the first matching sub-circuits from the power supply terminal of the circuit board.

5. The circuit board as described in claim 1, characterized in that, The switching module includes: A first switch, one end of which is connected to the power supply terminal of the circuit board, and the other end of which is connected to one end of each of the first matching sub-circuits respectively. The first switch is adapted to connect or disconnect each of the first matching sub-circuits from the power supply terminal of the circuit board respectively.

6. The circuit board as described in claim 5, characterized in that, At least one of the first matching sub-circuits is grounded, and the switching module further includes: The second switch has one end connected to the first spring contact, and the other end connected to the other end of each of the first matching sub-circuits. The second switch is adapted to connect or disconnect each of the first matching sub-circuits from the first spring contact.

7. The circuit board as described in claim 1, characterized in that, The switching module includes: A third switch, one end of which is connected to the second spring contact, and the other end of which is connected to one end of each of the second matching sub-circuits respectively. The third switch is adapted to connect or disconnect each of the second matching sub-circuits from the second spring contact respectively.

8. The circuit board as described in claim 7, characterized in that, At least one of the second matching sub-circuits is grounded, and the second connection circuit further includes: A fourth switch, one end of which is connected to the ground terminal of the circuit board, and the other end of which is connected to the other end of each of the second matching sub-circuits respectively. The fourth switch is adapted to connect or disconnect each of the second matching sub-circuits from the ground terminal of the circuit board respectively.

9. The circuit board as described in claim 1, characterized in that, The switching module includes: A third switch, one end of which is connected to the ground terminal of the circuit board, and the other end of which is connected to one end of each of the second matching sub-circuits respectively. The third switch is adapted to connect or disconnect each of the second matching sub-circuits from the ground terminal of the circuit board respectively.

10. The circuit board as described in claim 9, characterized in that, At least one of the second matching sub-circuits is grounded, and the second connection circuit further includes: A fourth switch, one end of which is connected to the second spring contact, and the other end of which is connected to the other end of each of the second matching sub-circuits respectively. The fourth switch is adapted to connect or disconnect each of the second matching sub-circuits from the second spring contact respectively.

11. An electronic device, characterized in that, The electronic device includes: Antenna, including antenna feed and antenna ground; and The circuit board according to any one of claims 1 to 10, wherein the circuit board is connected to the antenna feed terminal and the antenna ground terminal respectively.

12. The electronic device as claimed in claim 11, characterized in that, The electronic device also includes: A control module, the control module being adapted to enable or disable the switch module.

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