CN217216578U - Antenna remote switching circuit, radio frequency system and base station - Google Patents
Antenna remote switching circuit, radio frequency system and base station Download PDFInfo
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- CN217216578U CN217216578U CN202221162712.XU CN202221162712U CN217216578U CN 217216578 U CN217216578 U CN 217216578U CN 202221162712 U CN202221162712 U CN 202221162712U CN 217216578 U CN217216578 U CN 217216578U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The utility model provides an antenna remote switch circuit, radio frequency system and basic station, this antenna remote switch circuit includes external antenna unit, built-in antenna unit, switching circuit, controller and communication module, and external antenna unit, built-in antenna unit and controller are connected respectively to the switching circuit, and communication module is connected to the controller, and communication module is used for receiving remote switching instruction, and the controller is used for switching circuit connection to external antenna unit or built-in antenna unit according to remote switching instruction control. This application passes through remote network according to the scene control switching circuit of in-service use to realize the switching between remote control built-in antenna and the external antenna, not only can reduce staff's work load, reduce the cost of labor, can also realize the remote switch configuration management, with the automatic test demand that satisfies basic station, antenna and each other suitability.
Description
Technical Field
The utility model relates to the field of communication technology, particularly, relate to a long-range switching circuit of antenna, radio frequency system and basic station.
Background
The antenna is an important component of wireless communication equipment and can realize signal amplification and space radiation functions. In the application of 4G and 5G small base stations, two antenna requirements are provided according to the field environment, one is a built-in antenna which is directly installed in the small base station equipment, and generally, the antenna has the advantages of small gain, small coverage area and low cost; the other type is an external antenna, generally, the external antenna has larger gain and larger coverage area, but the cost is higher, so the small base station can simultaneously have two using modes of the internal antenna and the external antenna.
In the process of carrying out base station performance test, antenna performance test and adaptability contrast test of antenna and base station, the same base station can be required to be used for carrying out back-and-forth switching test on various different antennas, however, the current antenna switching needs manual field control, the switching process is complex, and the requirement of automatic test cannot be met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a long-range switching circuit of antenna, radio frequency system and basic station can satisfy the demand of the different scenes of automatic test scene.
The utility model provides a technical scheme:
in a first aspect, the present invention provides an antenna remote switching circuit, which includes an external antenna unit, an internal antenna unit, a switching circuit, a controller and a communication module;
the switching circuit is respectively connected with the external antenna unit, the internal antenna unit and the controller, and the controller is connected with the communication module;
the communication module is used for receiving a remote switching instruction, and the controller is used for controlling the switching circuit to be connected to the external antenna unit or the internal antenna unit according to the remote switching instruction.
In an optional embodiment, the communication module includes an ethernet chip and a network port, and the controller, the ethernet chip and the network port are connected in sequence;
the Ethernet chip is used for connecting a switch through the network port to acquire the remote switching instruction.
In an optional embodiment, the antenna remote switching circuit further comprises a switch connected to the communication module;
the switch is used for being in communication connection with a remote test configuration system so as to forward the remote switching instruction sent by the test configuration system to the antenna remote switching circuit to complete antenna switching operation.
In an optional implementation manner, the controller is connected to the switching circuit through a GPIO interface, and is configured to send a corresponding level signal to the switching circuit to perform antenna selection.
In an optional embodiment, the switching circuit includes a radio frequency switch chip, a first resistor, and a first capacitor, where the radio frequency switch chip includes a power input pin, a first output pin, a second output pin, a first input pin, and a second input pin;
one end of the first resistor is used for being connected with a working power supply, the other end of the first resistor is respectively connected with one end of the first capacitor and the power supply input pin, and the other end of the first capacitor is grounded;
the first output pin is connected with the internal antenna unit, and the second output pin is connected with the external antenna unit;
the first input pin and the second input pin are respectively connected with different GPIO pins of the controller.
In an optional embodiment, the radio frequency switch chip further includes an input/output pin, and when the first input pin receives a low level signal and the second input pin receives a high level signal, the switching circuit is configured to turn on the input/output pin and the first output pin to select the internal antenna unit to be connected to the switching circuit;
when the first input pin receives a high level signal and the second input pin receives a low level signal, the switching circuit is used for enabling the input/output pin and the second output pin to be conducted so as to select the external antenna unit to be connected to the switching circuit.
In an alternative embodiment, the internal antenna unit includes a first inductor and a first connector;
one end of the first inductor is connected with the switching circuit and the first port of the first connector respectively, and the other end of the first inductor is grounded;
the second port and the third port of the first connector are both grounded, and the first connector is used for connecting a built-in antenna.
In an alternative embodiment, the external antenna unit includes a second inductor and a second connector;
one end of the second inductor is connected with the switching circuit and the first port of the second connector respectively, and the other end of the second inductor is grounded;
and the second port and the third port of the second connector are grounded, and the second connector is used for connecting an external antenna.
In a second aspect, the present invention provides a radio frequency system, which includes a radio frequency unit and the antenna remote switching circuit;
the radio frequency unit is connected with the antenna remote switching circuit and is used for correspondingly processing radio frequency signals transmitted or received by corresponding antennas in the antenna remote switching circuit.
In a third aspect, the present invention provides a base station, comprising the radio frequency system according to the foregoing embodiments.
The utility model provides a long-range switching circuit of antenna, radio frequency system and basic station's beneficial effect is:
the antenna remote switching circuit comprises an external antenna unit, an internal antenna unit, a switching circuit, a controller and a communication module, wherein the switching circuit is respectively connected with the external antenna unit, the internal antenna unit and the controller, the controller is connected with the communication module, the communication module is used for receiving a remote switching instruction, and the controller is used for controlling the switching circuit to be connected to the external antenna unit or the internal antenna unit according to the remote switching instruction. This application passes through remote network according to the scene control switching circuit of in-service use to realize the switching between remote control built-in antenna and the external antenna, not only can reduce staff's work load, reduce the cost of labor, can also realize the remote switch configuration management, with the automatic test demand that satisfies basic station, antenna and each other suitability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic diagram of a first structure of an antenna remote switching circuit according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of an antenna remote switching circuit according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a third structure of an antenna remote switching circuit according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a radio frequency system according to an embodiment of the present invention.
Description of the main element symbols:
100-antenna remote switching circuit; 110-a switching circuit; 120-internal antenna element; 130-external antenna element; 140-a controller; 150-a communication module; 151-ethernet chip; 152-a network port; 160-a switch; 200-a radio frequency unit; 10-a radio frequency system; 300-test configuration system.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and for simplicity of description, and do not indicate or imply that the equipment or components that are referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
Referring to fig. 1, the present embodiment provides an antenna remote switching circuit 100, which is applied to a 4G or 5G small cell, and the antenna remote switching circuit 100 provided in the present embodiment includes an external antenna unit 130, an internal antenna unit 120, a switching circuit 110, a controller 140, and a communication module 150. The switching circuit 110 is respectively connected to the external antenna unit 130, the internal antenna unit 120 and the controller 140, the controller 140 is connected to the communication module 150, the communication module 150 is configured to receive a remote switching instruction, and the controller 140 is configured to control the switching circuit 110 to be connected to the external antenna unit 130 or the internal antenna unit 120 according to the remote switching instruction.
In this embodiment, the communication module 150 receives the remote switching instruction and sends the control instruction to the controller 140, and the controller 140 controls the switching circuit 110 according to the received remote switching instruction, so that the switching circuit 110 is connected to the external antenna unit 130 or the internal antenna unit 120, and the external antenna unit 130 operates or the internal antenna unit 120 operates. The controller 140 is connected to the switching circuit 110 through a GPIO interface, in other words, the controller 140 sends a corresponding level signal to the switching circuit 110 through the GPIO interface for antenna selection.
The structure and operation of each component of the antenna remote switching circuit 100 will be described below.
In one embodiment, as shown in fig. 2, the antenna remote switching circuit 100 further includes a switch 160 connected to the communication module 150, wherein the switch 160 is configured to be communicatively connected to the remote test configuration system 300 to forward a remote switching command sent by the test configuration system 300 to the antenna remote switching circuit 100 to complete an antenna switching operation. The communication module 150 includes an ethernet chip 151 and a network port 152, the network port 152 is used as a network interface for connecting to the switch 160, the controller 140, the ethernet chip 151 and the network port 152 are sequentially connected, and the ethernet chip 151 is used for connecting to the switch 160 through the network port 152 to obtain a remote switching instruction.
It can be understood that the switch 160 is connected to the communication module 150 and the test configuration system 300, the test configuration system 300 issues a remote antenna switching circuit 100 through the switch 160, and then the remote antenna switching circuit 100 receives a remote switching instruction issued by the test configuration system 300 through the communication module 150, so that the controller 140 controls the switching circuit 110 according to the remote switching instruction, so as to operate the external antenna unit 130 or the internal antenna unit 120, thereby implementing remote automatic antenna configuration. The ethernet chip is a phy (physical layer) chip, and the test configuration system 300 may be a server, a computer, or the like.
In one embodiment, as shown in fig. 3, the switching circuit 110 includes a radio frequency switch chip U1, a first resistor R1, and a first capacitor C1, and the radio frequency switch chip U1 includes a power input pin VBATT, a first output pin RF3, a second output pin RF2, a first input pin V1, a second input pin V2, and an input output pin RFC/RF 1.
It can be understood that one end of the first resistor R1 is used for connecting an operating power supply, the operating power supply is used for providing power for the RF switch circuit, the other end of the first resistor R1 is respectively connected to one end of the first capacitor C1 and the power input pin VBATT, the other end of the first capacitor C1 is grounded, the first output pin RF3 is connected to the internal antenna unit 120, the second output pin RF2 is connected to the external antenna unit 130, and the first input pin V1 and the second input pin V2 are respectively connected to different GPIO pins of the controller 140.
The radio frequency switch chip U1 further includes a first ground pin GND-1, a second ground pin GND-2, a third ground pin GND-3, a fourth ground pin GND-4, a fifth ground pin GND-5, a sixth ground pin PAD-GND and a radio frequency switch pin NC, where the radio frequency switch pin NC has no purpose and is limited to a package form, for example, the radio frequency switch chip U1 may be a SKY13374 device.
In the present embodiment, the controller 140 will send a corresponding level signal to the switching circuit 110, that is, the first input pin V1 and the second input of the switching circuit 110 will receive the corresponding level signal sent by the controller 140, the level signal received by the first input pin V1 is DAS _ SEL0, and the level signal received by the second input pin V2 is DAS _ SEL 1.
When the first input pin V1 receives a low-level signal and the second input pin V2 receives a high-level signal, in other words, when DAS _ SEL0 is 0 and DAS _ SEL1 is 1, the input/output pin RFC/RF1 and the first output pin RF3 of the switching circuit 110 are turned on according to the characteristics of the RF switch chip U1, the switching circuit 110 selects the internal antenna unit 120, and the RF signal is connected to the internal antenna through the first connector CN 1.
When the first input pin V1 receives a high-level signal and the second input pin V2 receives a low-level signal, in other words, when DAS _ SEL0 is equal to 1 and DAS _ SEL1 is equal to 0, the switching circuit 110 is configured to turn on the input/output pin RFC/RF1 and the second output pin RF2 according to the characteristics of the RF switch chip U1, and the switching circuit 110 selects the external antenna unit 130 for connection, and at this time, the RF signal is connected to the external antenna through the second connector CN 2.
In one embodiment, as shown in fig. 3, the internal antenna unit 120 includes a first inductor and a first connector CN1, one end of the first inductor is connected to the switching circuit 110 and the first port of the first connector CN1 (corresponding to the 1-terminal of the first connector CN1 in fig. 3), the other end of the first inductor is grounded, the second port of the first connector CN1 (corresponding to the 2-terminal of the first connector CN1 in fig. 3) and the third port (corresponding to the 3-terminal of the first connector CN1 in fig. 3) are both grounded, and the first connector CN1 is used to connect the internal antenna.
The external antenna unit 130 includes a second inductor and a second connector CN2, one end of the second inductor is connected to the first port (corresponding to the end 1 of the second connector CN2 in fig. 3) of the switching circuit 110 and the second connector CN2, the other end of the second inductor is grounded, both the second port (corresponding to the end 2 of the second connector CN2 in fig. 3) and the third port (corresponding to the end 3 of the second connector CN2 in fig. 3) of the second connector CN2 are grounded, and the second connector CN2 is used to connect an external antenna. The external antenna is detachably connected with the second connector CN2, and the external antenna can also be welded and fixed on the second connector CN2, and can also be connected with the second connector CN2 through a radio frequency cable.
Exemplarily, when the base station and the external antenna are disposed in two separated spaces and interconnected by a radio frequency cable, in other words, when the internal antenna and the external antenna are in the two separated spaces, for example, the internal antenna is disposed in a first space, and the external antenna is disposed in a second space, if the first space needs to be covered, the switching circuit 110 may be remotely controlled by a control instruction, so as to switch to connect the internal circuit, so as to enable the internal antenna to operate; if the second space needs to be covered, the switching circuit 110 can be switched to be connected with the external circuit through the remote control of the control instruction, so that the external antenna works, and the second space is covered.
According to the remote control system and the remote control method, the switching circuit 110 is controlled through the remote network according to actual use scenes, so that switching between the remote control built-in antenna and the external antenna is realized, the workload of workers can be reduced, the labor cost is reduced, remote switching configuration management can be realized, and the automatic test requirements of the base station, the antenna and the adaptability among each other are met.
As shown in fig. 4, the present application also proposes an rf system 10, which includes an rf unit 200 and the antenna remote switching circuit 100 in the above embodiment. The RF unit 200 is connected to the antenna remote switching circuit 100, that is, the RF processing unit is connected to the input/output pin RFC/RF1 of the RF switch chip U1, and is configured to perform corresponding processing on the RF signal transmitted or received by a corresponding antenna in the antenna remote switching circuit 100, so that the input/output pin RFC/RF1 of the RF switch chip U1 is electrically connected to the first output pin RF3 or the first output pin RF3 of the RF switch chip U1, so that the RF signal is connected to the internal antenna through the first connector CN1 or connected to the external antenna through the second connector CN 2.
The present application also proposes a base station, which includes the radio frequency system 10 in the above embodiment.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The antenna remote switching circuit is characterized by comprising an external antenna unit, an internal antenna unit, a switching circuit, a controller and a communication module;
the switching circuit is respectively connected with the external antenna unit, the internal antenna unit and the controller, and the controller is connected with the communication module;
the communication module is used for receiving a remote switching instruction, and the controller is used for controlling the switching circuit to be connected to the external antenna unit or the internal antenna unit according to the remote switching instruction.
2. The antenna remote switching circuit according to claim 1, wherein the communication module comprises an ethernet chip and a network port, and the controller, the ethernet chip and the network port are connected in sequence;
the Ethernet chip is used for connecting a switch through the network port to acquire the remote switching instruction.
3. The circuit of claim 1, further comprising a switch coupled to the communication module;
the switch is used for being in communication connection with a remote test configuration system so as to forward the remote switching instruction sent by the test configuration system to the antenna remote switching circuit to complete antenna switching operation.
4. The remote antenna switching circuit according to claim 1, wherein the controller is connected to the switching circuit through a GPIO interface, and configured to send a corresponding level signal to the switching circuit for antenna selection.
5. The antenna remote switching circuit according to claim 1, wherein the switching circuit comprises a radio frequency switch chip, a first resistor and a first capacitor, the radio frequency switch chip comprising a power input pin, a first output pin, a second output pin, a first input pin and a second input pin;
one end of the first resistor is used for being connected with a working power supply, the other end of the first resistor is respectively connected with one end of the first capacitor and the power supply input pin, and the other end of the first capacitor is grounded;
the first output pin is connected with the internal antenna unit, and the second output pin is connected with the external antenna unit;
the first input pin and the second input pin are respectively connected with different GPIO pins of the controller.
6. The antenna remote switching circuit according to claim 5, wherein the rf switch chip further includes an input/output pin, and when the first input pin receives a low level signal and the second input pin receives a high level signal, the switching circuit is configured to conduct the input/output pin and the first output pin to select the internal antenna unit to be connected to the switching circuit;
when the first input pin receives a high level signal and the second input pin receives a low level signal, the switching circuit is used for enabling the input/output pin and the second output pin to be conducted so as to select the external antenna unit to be connected to the switching circuit.
7. The antenna remote switching circuit according to any one of claims 1 to 6, wherein the internal antenna unit comprises a first inductor and a first connector;
one end of the first inductor is connected with the switching circuit and the first port of the first connector respectively, and the other end of the first inductor is grounded;
the second port and the third port of the first connector are both grounded, and the first connector is used for connecting a built-in antenna.
8. The antenna remote switching circuit according to any one of claims 1 to 6, wherein the external antenna unit comprises a second inductor and a second connector;
one end of the second inductor is connected with the switching circuit and the first port of the second connector respectively, and the other end of the second inductor is grounded;
and the second port and the third port of the second connector are grounded, and the second connector is used for connecting an external antenna.
9. A radio frequency system comprising a radio frequency unit and the antenna remote switching circuit of any one of claims 1 to 8;
the radio frequency unit is connected with the antenna remote switching circuit and is used for correspondingly processing radio frequency signals transmitted or received by corresponding antennas in the antenna remote switching circuit.
10. A base station comprising the radio frequency system of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221162712.XU CN217216578U (en) | 2022-05-16 | 2022-05-16 | Antenna remote switching circuit, radio frequency system and base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221162712.XU CN217216578U (en) | 2022-05-16 | 2022-05-16 | Antenna remote switching circuit, radio frequency system and base station |
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| Publication Number | Publication Date |
|---|---|
| CN217216578U true CN217216578U (en) | 2022-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221162712.XU Active CN217216578U (en) | 2022-05-16 | 2022-05-16 | Antenna remote switching circuit, radio frequency system and base station |
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| CN (1) | CN217216578U (en) |
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- 2022-05-16 CN CN202221162712.XU patent/CN217216578U/en active Active
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