CN213754980U - Radio frequency coupling device and radio frequency system - Google Patents
Radio frequency coupling device and radio frequency system Download PDFInfo
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- CN213754980U CN213754980U CN202023257316.9U CN202023257316U CN213754980U CN 213754980 U CN213754980 U CN 213754980U CN 202023257316 U CN202023257316 U CN 202023257316U CN 213754980 U CN213754980 U CN 213754980U
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Abstract
The present disclosure relates to a radio frequency coupling device and a radio frequency system. The device comprises: signal input interface, power source, signal output interface, radio frequency coupling module, direct current coupling module and switch module, switch module are used for triggering first connection state when power source does not insert power source and connect, trigger the second connection state when power source inserts power source and connect, and first connection state includes: the signal input interface is electrically connected with the second signal output interface through the second direct current coupling unit, and the power supply interface is disconnected with the second signal output interface; the second connection state includes: the power interface is electrically connected with the second signal output interface through the second direct current coupling unit, and the signal input interface and the second signal output interface are in open circuit. The technical scheme disclosed by the invention can simultaneously transmit the radio frequency signal and the direct current voltage signal, support remote power supply and local distributed power supply and enhance the signal coverage effect.
Description
Technical Field
The present disclosure relates to the field of mobile communications technologies, and in particular, to a radio frequency coupling device and a radio frequency system.
Background
At present, in the field of mobile communication such as mobile phones, a fourth generation (4G) mobile communication system is still the main communication system for data transmission, but with the higher requirements of people on speed, reliability, low time delay and the like, the 4G communication can not meet the requirements of people, and a fifth generation (5G) mobile communication system is produced.
The coverage of the 5G signal is much smaller than that of the 4G signal due to high-frequency short wave, and the penetration performance is poorer. If the indoor coverage problem is solved by increasing the number of stations, not only more property resources need to be coordinated, but also the equipment cost and the electricity cost are greatly increased. At present, radio frequency signals are subjected to remote coverage through a feeder line, so that the influences of small coverage range and poor penetration capability of high-frequency signals can be relieved, but the power supply pressure of a base station is high and the heating is serious due to excessive access equipment.
SUMMERY OF THE UTILITY MODEL
To solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides a radio frequency coupling device and a radio frequency system.
In a first aspect, the present disclosure provides a radio frequency coupling device, including:
the signal input interface is used for receiving and transmitting a first direct-current voltage signal and a first radio-frequency signal;
the power interface is used for receiving and transmitting a second direct current voltage signal;
the radio frequency coupling module is connected in series between the signal input interface and the signal output interface and is used for coupling the first radio frequency signal and isolating the first direct current voltage signal and the second direct current voltage signal;
the direct current coupling module comprises a first direct current coupling unit and a second direct current coupling unit, wherein the first end of the first direct current coupling unit is electrically connected with the signal input interface, and the second end of the first direct current coupling unit is electrically connected with the first signal output interface and is used for coupling the first direct current voltage signal and isolating the first radio frequency signal; the first end of the second direct current coupling unit is electrically connected with the signal input interface, and the second end of the second direct current coupling unit is electrically connected with the second signal output interface, and is used for coupling the first direct current voltage signal or the second direct current voltage signal and isolating the first radio frequency signal;
the signal output interface comprises a first signal output interface and a second signal output interface, the first signal output interface is used for outputting the coupled first direct-current voltage signal and the coupled second radio-frequency signal, and the second signal output interface is used for outputting a third direct-current voltage signal and a third radio-frequency signal;
the switch module is used for triggering a first connection state when the power supply interface is not plugged into the power supply connector and triggering a second connection state when the power supply interface is plugged into the power supply connector, wherein the first connection state comprises: the signal input interface is electrically connected with the second signal output interface through the second direct current coupling unit, and the power supply interface is disconnected with the second signal output interface; the second connection state includes: the power supply interface is electrically connected with the second signal output interface through the second direct current coupling unit, and the signal input interface and the second signal output interface are in open circuit.
Optionally, the radio frequency coupling module includes a first radio frequency coupling channel and a second radio frequency coupling channel; the signal input interface comprises a first signal input sub-interface and a second signal input sub-interface; the first signal output interface comprises a first signal output sub-interface and a second signal output sub-interface; the second signal output interface comprises a third signal output sub-interface and a fourth signal output sub-interface;
the first signal input sub-interface is electrically connected with the input end of the first radio frequency coupling channel, the second signal input sub-interface is electrically connected with the input end of the second radio frequency coupling channel, the first signal output sub-interface is electrically connected with the first coupling output end of the first radio frequency coupling channel, the second signal output sub-interface is electrically connected with the first coupling output end of the second radio frequency coupling channel, the third signal output sub-interface is electrically connected with the second coupling output end of the first radio frequency coupling channel, and the fourth signal output sub-interface is electrically connected with the second coupling output end of the second radio frequency coupling channel.
Optionally, the first signal input sub-interface, the second signal input sub-interface, the first signal output sub-interface, the second signal output sub-interface, the third signal output sub-interface, and the fourth signal output sub-interface all include a shaft core, and the direct current voltage signal is transmitted through the shaft core.
Optionally, the first dc coupling unit includes a first inductor and a second inductor, a first end of the first inductor is electrically connected to the first signal input sub-interface, and a second end of the first inductor is electrically connected to the first signal output sub-interface; and the first end of the second inductor is electrically connected with the second signal input sub-interface, and the second end of the second inductor is electrically connected with the second signal output sub-interface.
Optionally, the second dc coupling unit includes a third inductor, a fourth inductor, a fifth inductor, and a sixth inductor, a first end of the third inductor is electrically connected to the first signal input sub-interface, and a second end of the third inductor is electrically connected to a first end of the fourth inductor via the switch module; a second end of the fourth inductor is electrically connected with the third signal output sub-interface; a first end of the fifth inductor is electrically connected with the second signal input sub-interface, and a second end of the fifth inductor is electrically connected with a first end of the sixth inductor through the switch module; and the second end of the sixth inductor is electrically connected with the fourth signal output sub-interface.
Optionally, the power interface includes a first power sub-interface and a second power sub-interface; the switch module comprises a first double-way selection switch and a second double-way selection switch;
a moving contact of the first dual-way selection switch is electrically connected with a first end of the fourth inductor, a first static contact of the first dual-way selection switch is electrically connected with the first power supply sub-interface, and a second static contact of the first dual-way selection switch is electrically connected with a second end of the third inductor;
a moving contact of the second dual-way selection switch is electrically connected with a first end of the sixth inductor, a first stationary contact of the second dual-way selection switch is electrically connected with the second power supply sub-interface, and a second stationary contact of the second dual-way selection switch is electrically connected with a second end of the fifth inductor.
Optionally, the first dual-path selection switch and the second dual-path selection switch are disposed in the power interface, and are all flip-chip switches;
when the power interface is inserted into the power connector, the movable contact of the first double-circuit selection switch is communicated with the first fixed contact, and the movable contact of the second double-circuit selection switch is communicated with the first fixed contact; when the power interface is not plugged into the power connector, the movable contact of the first double-circuit selection switch is communicated with the second fixed contact, and the movable contact of the second double-circuit selection switch is communicated with the second fixed contact.
Optionally, the radio frequency coupling module is a passive device.
In a second aspect, the present disclosure provides a radio frequency system comprising: the radio frequency coupling device comprises radio frequency transceiving equipment, access equipment, a power supply and one or more radio frequency coupling devices provided by the disclosure;
the signal input interface of the first-stage radio frequency coupling device is connected with the radio frequency transceiving equipment, the second signal output interface of the previous-stage radio frequency coupling device is connected with the signal input interface of the next-stage radio frequency coupling device, the first signal output interface of the radio frequency coupling device is connected with the access equipment, and the power supply interface of at least one radio frequency coupling device is connected with the power supply.
Optionally, the radio frequency transceiver device includes a base station or a radio remote unit.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
according to the technical scheme, through the matched arrangement of the signal input interface, the power interface, the signal output interface, the radio frequency coupling module, the direct current coupling module and the switch module, the radio frequency signal and the direct current voltage signal can be transmitted simultaneously, when the power interface is not plugged into a power connector, the switch module controls the signal input interface to be electrically connected with the second signal output interface through the second direct current coupling unit, and the power interface is disconnected with the second signal output interface, so that when a power supply carried by the signal input interface can still meet the power consumption requirement of next-stage access equipment, the signal input interface is kept to be electrically connected with the second signal output interface, the power supply of a local external power supply is not needed, and the remote power supply is realized; when the power interface is inserted into the power connector, the switch module controls the power interface to be electrically connected with the second signal output interface, and the signal input interface and the second signal output interface are disconnected, so that when the power carried by the signal input interface cannot meet the power consumption requirement of the next-stage access equipment, the signal input interface is electrically connected with the second signal output interface, the power is supplied by a local external power supply, sufficient power is provided for the next-stage access equipment, local distributed power supply is realized, and the requirement on a feeder line is reduced. Therefore, the number of the radio frequency coupling devices and the number of the access devices can be increased through flexible switching of the power supply mode, the signal coverage effect is enhanced, and meanwhile, the power supply pressure of the base station is reduced, so that the power consumption loss and the requirement on a radio frequency feeder line are reduced, and the signal coverage cost is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a block diagram of a radio frequency coupling device according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a radio frequency coupling device according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a radio frequency system according to an embodiment of the present disclosure.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
Fig. 1 is a block diagram of a radio frequency coupling device according to an embodiment of the present disclosure. The radio frequency coupling device can be applied to mobile communication indoor coverage, particularly 5G signal indoor coverage, and can realize effective remote coverage on radio frequency signals by cascading a plurality of radio frequency coupling devices provided by the embodiment through radio frequency feeders. As shown in fig. 1, the rf coupling device includes:
the signal input interface 1 is used for receiving and transmitting a first direct current voltage signal and a first radio frequency signal;
the power interface 2 is used for receiving and transmitting a second direct-current voltage signal;
the radio frequency coupling module 3 is connected in series between the signal input interface 1 and the signal output interface and is used for coupling the first radio frequency signal and isolating the first direct current voltage signal and the second direct current voltage signal;
the direct current coupling module comprises a first direct current coupling unit 4 and a second direct current coupling unit 5, wherein the first end of the first direct current coupling unit 4 is electrically connected with the signal input interface 1, and the second end of the first direct current coupling unit 4 is electrically connected with the first signal output interface 6 and is used for coupling a first direct current voltage signal and isolating a first radio frequency signal; the first end of the second direct current coupling unit 5 is electrically connected with the signal input interface 1, and the second end of the second direct current coupling unit is electrically connected with the second signal output interface 7, and is used for coupling the first direct current voltage signal or the second direct current voltage signal and isolating the first radio frequency signal;
the signal output interface comprises a first signal output interface 6 and a second signal output interface 7, the first signal output interface 6 is used for outputting a coupled first direct-current voltage signal and a coupled second radio-frequency signal, and the second signal output interface 7 is used for outputting a third direct-current voltage signal and a third radio-frequency signal;
In the above technical solution, the signal input interface 1 may be connected to a base station or a radio remote unit, or may be connected to a signal output interface of the primary radio frequency coupling device, and the power supply interface 2 is connected to a local external power supply. The first signal output interface 6 can be connected with the access device to provide a working power supply and radio frequency signals for the access device, and the second signal output interface 7 can be connected with other coupling devices such as a next-stage radio frequency coupling device to realize the cascade connection of the radio frequency coupling devices and provide the working power supply and the radio frequency signals for the next-stage access device. The second radio frequency signal is a part of the radio frequency signal coupled and output by the radio frequency coupling module 3 of the first radio frequency signal, and the third radio frequency signal is another part of the radio frequency signal coupled and output by the radio frequency coupling module 3 of the first radio frequency signal. The third dc voltage signal is the coupled first dc voltage signal or the coupled second dc voltage signal, for example, when the switch module 8 triggers the first connection state, the signal input interface 1 is electrically connected to the second signal output interface 7 via the second dc coupling unit 5, and at this time, the third dc voltage signal is the coupled first dc voltage signal; when the switch module 8 triggers the second connection state, the power interface 2 is electrically connected to the second signal output interface 7 via the second dc coupling unit 5, and at this time, the third dc voltage signal is the coupled second dc voltage signal.
Based on the above technical solution, in some embodiments, when the power interface is not plugged into the power connector, the switch module 8 triggers the first connection state, that is, the signal input interface 1 is electrically connected to the second signal output interface 7 via the second dc coupling unit 5, and the power interface 2 is disconnected from the second signal output interface 7. At this time, the first radio frequency signal transmitted by the signal input interface 1 is coupled by the radio frequency coupling module 3 to output a second radio frequency signal and a third radio frequency signal, the second radio frequency signal is transmitted to the first signal output interface 6, and the third radio frequency signal is output to the second signal output interface 7; the first direct current voltage signal transmitted by the signal input interface 1 is coupled by the first direct current coupling unit 4 and then output to the first signal output interface 6, and meanwhile, the first direct current voltage signal is coupled by the second direct current coupling unit 5 and then output to the second signal output interface 7. Therefore, the first signal output interface 6 outputs the coupled first direct-current voltage signal and the coupled second radio-frequency signal, and the second signal output interface 7 outputs the coupled first direct-current voltage signal and the coupled third radio-frequency signal, so that simultaneous transmission of the radio-frequency signal and the direct-current voltage signal is realized, respective control of the radio-frequency signal and the direct-current voltage signal is realized, and transmission of the radio-frequency signal and the direct-current voltage signal is not influenced by each other. The scheme is suitable for the condition that the power of the remote power supply of the base station or the radio remote unit is enough to supply power for all the access devices, and remote power supply is realized.
In some embodiments, when the power interface is plugged into the power connector, the switch module 8 triggers the second connection state, that is, the power interface 2 is electrically connected to the second signal output interface 7 via the second dc coupling unit 5, and the signal input interface 1 is disconnected from the second signal output interface 7. At this time, the first radio frequency signal transmitted by the signal input interface 1 is coupled by the radio frequency coupling module 3 to output a second radio frequency signal and a third radio frequency signal, the second radio frequency signal is transmitted to the first signal output interface 6, and the third radio frequency signal is output to the second signal output interface 7; the first direct current voltage signal transmitted by the signal input interface 1 is coupled by the first direct current coupling unit 4 and then output to the first signal output interface 6, and meanwhile, the second direct current voltage signal transmitted by the power supply interface 2 is coupled by the second direct current coupling unit 5 and then output to the second signal output interface 7. Therefore, the first signal output interface 6 outputs the coupled first direct-current voltage signal and the coupled second radio-frequency signal, and the second signal output interface 7 outputs the coupled second direct-current voltage signal and the coupled third radio-frequency signal, so that simultaneous transmission of the radio-frequency signal and the direct-current voltage signal is realized, respective control of the radio-frequency signal and the direct-current voltage signal is realized, and transmission of the radio-frequency signal and the direct-current voltage signal is not influenced by each other. The scheme is suitable for the condition that the power of the remote power supply of the base station or the radio remote unit is insufficient, and local distributed power supply is realized.
To sum up, the technical scheme of the embodiment of the present disclosure can perform flexible switching between remote power supply and local distributed power supply through the switch module 8, increase the number of the radio frequency coupling devices and the access devices, and enhance the signal coverage effect.
The radio frequency coupling device provided by the embodiment of the disclosure can transmit radio frequency signals and direct current voltage signals simultaneously by the matching arrangement of the signal input interface, the power interface, the signal output interface, the radio frequency coupling module, the direct current coupling module and the switch module, and can control the signal input interface to be electrically connected with the second signal output interface through the second direct current coupling unit when the power interface is not plugged into the power connector, and the power interface is disconnected with the second signal output interface, so that when a power source carried by the signal input interface can still meet the power consumption requirement of next-stage access equipment, the electrical connection between the signal input interface and the second signal output interface is maintained, the power supply of a local external power supply source is not needed, and the remote power supply is realized; when the power interface is inserted into the power connector, the switch module controls the power interface to be electrically connected with the second signal output interface, and the signal input interface and the second signal output interface are disconnected, so that when the power carried by the signal input interface cannot meet the power consumption requirement of the next-stage access equipment, the signal input interface is electrically connected with the second signal output interface, the power is supplied by a local external power supply, sufficient power is provided for the next-stage access equipment, local distributed power supply is realized, and the requirement on a feeder line is reduced. Therefore, the number of the radio frequency coupling devices and the number of the access devices can be increased through flexible switching of the power supply mode, the signal coverage effect is enhanced, and meanwhile, the power supply pressure of the base station is reduced, so that the power consumption loss and the requirement on a radio frequency feeder line are reduced, and the signal coverage cost is reduced.
Based on the above technical solution, in an embodiment of the present disclosure, as shown in fig. 2, the rf coupling module 5 includes a first rf coupling channel T1 and a second rf coupling channel T2; the signal input interface comprises a first signal input sub-interface IN1 and a second signal input sub-interface IN 2; the first signal output interface comprises a first signal output sub-interface OUT1 and a second signal output sub-interface OUT 2; the second signal output interface comprises a third signal output sub-interface OUT3 and a fourth signal output sub-interface OUT 4; the first signal input sub-interface IN1 is electrically connected to an input terminal of the first rf coupling channel T1, the second signal input sub-interface IN2 is electrically connected to an input terminal of the second rf coupling channel T2, the first signal output sub-interface OUT1 is electrically connected to a first coupling output terminal of the first rf coupling channel T1, the second signal output sub-interface OUT2 is electrically connected to a first coupling output terminal of the second rf coupling channel T2, the third signal output sub-interface OUT3 is electrically connected to a second coupling output terminal of the first rf coupling channel T1, and the fourth signal output sub-interface OUT4 is electrically connected to a second coupling output terminal of the second rf coupling channel T2.
IN this embodiment, the rf coupling module 5 has two channels, and is adapted to the positive pole and the negative pole of the dc voltage signal, the first rf coupling channel T1 and the second rf coupling channel T2 need to be connected to the first signal input sub-interface IN1 and the second signal input sub-interface IN2, respectively, one of the first signal input sub-interface IN1 and the second signal input sub-interface IN2 outputs a positive voltage signal, and the other outputs a negative voltage signal, for example, the first signal input sub-interface IN1 outputs a positive voltage signal, and the second signal input sub-interface IN2 outputs a negative voltage signal. At this time, the first rf signal may include a first sub-rf signal and a second sub-rf signal, the first signal input sub-interface IN1 receives and transmits the first sub-rf signal, and the first sub-rf signal is coupled and output to the first signal output sub-interface OUT1 and the third signal output sub-interface OUT3 through the first rf coupling channel T1 based on the requirement of impedance matching; the second signal input sub-interface IN2 receives and transmits the second sub-rf signal, and the second sub-rf signal is coupled and output to the second signal output sub-interface OUT2 and the fourth signal output sub-interface OUT4 via the second rf coupling channel T2 based on the requirement of impedance matching.
IN a preferred embodiment of the present disclosure, the first signal input sub-interface IN1, the second signal input sub-interface IN2, the first signal output sub-interface OUT1, the second signal output sub-interface OUT2, the third signal output sub-interface OUT3 and the fourth signal output sub-interface OUT4 all include a shaft core, and a dc voltage signal is transmitted through the shaft core. Therefore, the direct-current voltage signal is only transmitted in the inner core of the joint and is insulated from the external environment, so that the risks of common ground and short circuit can be reduced, and the system is more reliable.
IN some embodiments, with continued reference to fig. 2, the first dc coupling unit includes a first inductor L1 and a second inductor L2, the first inductor L1 having a first terminal electrically connected to the first signal input sub-interface IN1 and a second terminal electrically connected to the first signal output sub-interface OUT 1; the first terminal of the second inductor L2 is electrically connected to the second signal input sub-interface IN2, and the second terminal is electrically connected to the second signal output sub-interface OUT 2. Therefore, by using the characteristics of inductance "direct current and alternating current resistance", the first radio frequency signal can be isolated, the first radio frequency signal is prevented from being directly transmitted to the first signal output sub-interface OUT1 and the second signal output sub-interface OUT2, and the positive voltage signal and the negative voltage signal of the first direct current voltage signal can be respectively coupled to the first signal output sub-interface OUT1 and the second signal output sub-interface OUT 2.
IN some embodiments, with continued reference to fig. 2, the second dc coupling unit includes a third inductor L3, a fourth inductor L4, a fifth inductor L5, and a sixth inductor L6, a first end of the third inductor L3 is electrically connected to the first signal input sub-interface IN1, and a second end is electrically connected to a first end of the fourth inductor L4 via the switch module; a second end of the fourth inductor L4 is electrically connected to the third signal output sub-interface OUT 3; a first end of the fifth inductor L5 is electrically connected to the second signal input sub-interface IN2, and a second end is electrically connected to the first end of the sixth inductor L6 via the switch module; a second terminal of the sixth inductor L6 is electrically connected to the fourth signal output sub-interface OUT 4.
IN this technical solution, when the switch module triggers the first connection state, the third inductor L3 is communicated with the fourth inductor L4, the fifth inductor L5 is communicated with the sixth inductor L6, the first signal input sub-interface IN1 is electrically connected with the third signal output sub-interface OUT3 through the third inductor L3 and the fourth inductor L4, a positive voltage signal output by the first signal input sub-interface IN1 is coupled with the fourth inductor L3 and the fourth inductor L4 and then output to the third signal output sub-interface OUT3, the second signal input sub-interface IN2 is electrically connected with the fourth signal output sub-interface OUT4 through the fifth inductor L5 and the sixth inductor L6, and a negative voltage signal output by the second signal input sub-interface IN2 is coupled with the fourth signal output sub-interface OUT4 through the fifth inductor L5 and the sixth inductor L6 and then output to the fourth signal output sub-interface OUT 4. When the switch module triggers the second connection state, the third inductor L3 and the fourth inductor L4 are disconnected, and the fifth inductor L5 and the sixth inductor L6 are disconnected, so that the input of the remote power supply to the next stage of radio frequency coupling device or access equipment is disconnected; meanwhile, the power interface is electrically connected with the third signal output sub-interface OUT3 and the fourth signal output sub-interface OUT4 through a fourth inductor L4 and a sixth inductor L6, for example, a positive voltage signal of a second direct-current voltage signal transmitted by the power interface is coupled through the fourth inductor L4 and then output to the third signal output sub-interface OUT3, and a negative voltage signal is coupled through the sixth inductor L6 and then output to the fourth signal output sub-interface OUT 4. IN this scheme, when the switch module triggers the second connection state, since the third inductor L3 and the fourth inductor L4 are disconnected, a line terminal is inevitably formed on the line on the side of the third inductor L3, and considering that the radio frequency signal transmitted by the first signal input sub-interface IN1 is radiated through the formed line terminal under the condition that the third inductor L3 is not provided, the radio frequency signal is isolated by providing the third inductor L3, and the loss of the radio frequency signal is reduced; similarly, the fifth inductor L5 and the sixth inductor L6 are disconnected, and the fifth inductor L5 is provided to reduce the loss of the radio frequency signal; in addition, the fourth inductor L4 can not only play a role in transmitting a dc voltage signal, but also prevent a radio frequency signal coupled and output by the radio frequency coupling module 5 from being transmitted to the power interface; similarly, the sixth inductor L6 may not only function to transmit a dc voltage signal, but also prevent the rf signal coupled and output by the rf coupling module 5 from being transmitted to the power interface.
In some embodiments, with continued reference to fig. 2, the power interface includes a first power sub-interface U1 and a second power sub-interface U2; the switch module comprises a first double-way selection switch and a second double-way selection switch; a moving contact A1 of the first double-circuit selection switch is electrically connected with a first end of a fourth inductor L4, a first fixed contact B1 of the first double-circuit selection switch is electrically connected with a first power supply sub-interface U1, and a second fixed contact C1 of the first double-circuit selection switch is electrically connected with a second end of a third inductor L3; the moving contact a2 of the second dual-way selection switch is electrically connected to the first end of the sixth inductor L6, the first stationary contact B2 of the second dual-way selection switch is electrically connected to the second power sub-interface U2, and the second stationary contact C2 of the second dual-way selection switch is electrically connected to the second end of the fifth inductor L5.
IN the technical scheme, when the switch module triggers the first connection state, the movable contact a1 of the first double-circuit selection switch is communicated with the first fixed contact B1, and the movable contact a2 of the first double-circuit selection switch is communicated with the first fixed contact B2, so that the first signal input sub-interface IN1 is electrically connected with the third signal output sub-interface OUT3, and the second signal input sub-interface IN2 is electrically connected with the fourth signal output sub-interface OUT4, thereby realizing remote power supply. When the switch module triggers the second connection state, the movable contact a1 of the first two-way selection switch is communicated with the second fixed contact C1, and the movable contact a2 of the first two-way selection switch is communicated with the second fixed contact C2, so that the first power supply sub-interface U1 is electrically connected with the third signal output sub-interface OUT3, and the second power supply sub-interface U2 is electrically connected with the fourth signal output sub-interface OUT4, thereby realizing local distributed power supply.
In some embodiments, the first dual-way selector switch and the second dual-way selector switch are electronically controlled switches, and the first dual-way selector switch and the second dual-way selector switch are controlled to select the connected stationary contact based on the determination of whether the power interface is plugged into the power connector.
In some embodiments, the first and second dual-way selector switches are mechanical switches that are automatically triggered to select the stationary contact by an insertion stress condition of the power connection in the power interface. Illustratively, the first dual-path selection switch and the second dual-path selection switch are arranged in the power interface and are all reed switches; when the power interface is plugged into a power connector, the movable contact A1 of the first double-circuit selection switch is communicated with the first fixed contact B1, and the movable contact A2 of the second double-circuit selection switch is communicated with the first fixed contact B2; when the power interface is not plugged into the power connector, the movable contact A1 of the first two-way selection switch is communicated with the second fixed contact C1, and the movable contact A2 of the second two-way selection switch is communicated with the second fixed contact C2.
Optionally, in each of the above embodiments, the rf coupling module is a passive device, such as a passive rf coupling circuit. Therefore, bidirectional transmission of radio frequency signals (transmission of downlink radio frequency signals provided by the base station or the radio remote unit to the access equipment and uplink radio frequency signals output by the access equipment to the base station or the radio remote unit) can be realized, and the method is low in cost and high in reliability.
In addition, the embodiment of the disclosure also provides a radio frequency system. Fig. 3 is a schematic structural diagram of a radio frequency system according to an embodiment of the present disclosure. As shown in fig. 3, the radio frequency system includes: the radio frequency transceiver device 10, the access device 20, the power supply 30 and one or more radio frequency coupling devices provided by the embodiments of the present disclosure; the signal input interface of the first stage radio frequency coupling device is connected with the radio frequency transceiver 10, the second signal output interface of the previous stage radio frequency coupling device is connected with the signal input interface of the next stage radio frequency coupling device, the first signal output interface of the radio frequency coupling device is connected with the access device 20, and the power supply interface of at least one radio frequency coupling device is connected with the power supply 30. The first stage radio frequency coupling device is connected with the radio frequency transceiver device 10, and the upper stage radio frequency coupling device is connected with the lower stage radio frequency coupling device through radio frequency feeder lines. The radio transceiver equipment 10 includes a base station or a radio remote unit.
Fig. 3 shows, by way of example only, the structure of a radio frequency system, which includes three cascaded radio frequency coupling devices, namely, a first stage radio frequency coupling device 11, a second stage radio frequency coupling device 12, and a third stage radio frequency coupling device 13. The power interface of the third stage rf coupling device 13 is connected to a power supply 30, at this time, the first stage rf coupling device 11, the second stage rf coupling device 12, and the access device 20 of the third stage rf coupling device 13 are powered by remote power supply, the third stage rf coupling device 13 cuts off the power supplied from the signal input interface to the signal output interface, and the local external power supply 30 supplies power to the subsequent stage coupling device (specifically, the access device of the subsequent stage rf coupling device) to provide sufficient power for the subsequent stage coupling device. It will be appreciated that in particular embodiments, the power supply 30 that needs to be accessed may be set according to the power supply capability of the radio frequency transceiver device 10 and the line loss, ensuring that sufficient power is provided to all of the access devices 20.
The radio frequency system provided by the embodiment of the disclosure comprises the radio frequency coupling device provided by the embodiment of the disclosure, and has the same functions and beneficial effects.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A radio frequency coupling device, comprising:
the signal input interface is used for receiving and transmitting a first direct-current voltage signal and a first radio-frequency signal;
the power interface is used for receiving and transmitting a second direct current voltage signal;
the radio frequency coupling module is connected in series between the signal input interface and the signal output interface and is used for coupling the first radio frequency signal and isolating the first direct current voltage signal and the second direct current voltage signal;
the direct current coupling module comprises a first direct current coupling unit and a second direct current coupling unit, wherein the first end of the first direct current coupling unit is electrically connected with the signal input interface, and the second end of the first direct current coupling unit is electrically connected with the first signal output interface and is used for coupling the first direct current voltage signal and isolating the first radio frequency signal; the first end of the second direct current coupling unit is electrically connected with the signal input interface, and the second end of the second direct current coupling unit is electrically connected with the second signal output interface, and is used for coupling the first direct current voltage signal or the second direct current voltage signal and isolating the first radio frequency signal;
the signal output interface comprises a first signal output interface and a second signal output interface, the first signal output interface is used for outputting the coupled first direct-current voltage signal and the coupled second radio-frequency signal, and the second signal output interface is used for outputting a third direct-current voltage signal and a third radio-frequency signal;
the switch module is used for triggering a first connection state when the power supply interface is not plugged into the power supply connector and triggering a second connection state when the power supply interface is plugged into the power supply connector, wherein the first connection state comprises: the signal input interface is electrically connected with the second signal output interface through the second direct current coupling unit, and the power supply interface is disconnected with the second signal output interface; the second connection state includes: the power supply interface is electrically connected with the second signal output interface through the second direct current coupling unit, and the signal input interface and the second signal output interface are in open circuit.
2. The rf coupling device of claim 1, wherein the rf coupling module includes a first rf coupling channel and a second rf coupling channel; the signal input interface comprises a first signal input sub-interface and a second signal input sub-interface; the first signal output interface comprises a first signal output sub-interface and a second signal output sub-interface; the second signal output interface comprises a third signal output sub-interface and a fourth signal output sub-interface;
the first signal input sub-interface is electrically connected with the input end of the first radio frequency coupling channel, the second signal input sub-interface is electrically connected with the input end of the second radio frequency coupling channel, the first signal output sub-interface is electrically connected with the first coupling output end of the first radio frequency coupling channel, the second signal output sub-interface is electrically connected with the first coupling output end of the second radio frequency coupling channel, the third signal output sub-interface is electrically connected with the second coupling output end of the first radio frequency coupling channel, and the fourth signal output sub-interface is electrically connected with the second coupling output end of the second radio frequency coupling channel.
3. The radio frequency coupling device according to claim 2, wherein the first signal input sub-interface, the second signal input sub-interface, the first signal output sub-interface, the second signal output sub-interface, the third signal output sub-interface, and the fourth signal output sub-interface each comprise a shaft core through which a direct current voltage signal is transmitted.
4. The rf coupling device according to claim 2, wherein the first dc coupling unit comprises a first inductor and a second inductor, a first end of the first inductor is electrically connected to the first signal input sub-interface, and a second end of the first inductor is electrically connected to the first signal output sub-interface; and the first end of the second inductor is electrically connected with the second signal input sub-interface, and the second end of the second inductor is electrically connected with the second signal output sub-interface.
5. The rf coupling device according to claim 2, wherein the second dc coupling unit comprises a third inductor, a fourth inductor, a fifth inductor and a sixth inductor, a first end of the third inductor is electrically connected to the first signal input sub-interface, and a second end of the third inductor is electrically connected to a first end of the fourth inductor via the switch module; a second end of the fourth inductor is electrically connected with the third signal output sub-interface; a first end of the fifth inductor is electrically connected with the second signal input sub-interface, and a second end of the fifth inductor is electrically connected with a first end of the sixth inductor through the switch module; and the second end of the sixth inductor is electrically connected with the fourth signal output sub-interface.
6. The radio frequency coupling device according to claim 5, wherein the power interface comprises a first power sub-interface and a second power sub-interface; the switch module comprises a first double-way selection switch and a second double-way selection switch;
a moving contact of the first dual-way selection switch is electrically connected with a first end of the fourth inductor, a first static contact of the first dual-way selection switch is electrically connected with the first power supply sub-interface, and a second static contact of the first dual-way selection switch is electrically connected with a second end of the third inductor;
a moving contact of the second dual-way selection switch is electrically connected with a first end of the sixth inductor, a first stationary contact of the second dual-way selection switch is electrically connected with the second power supply sub-interface, and a second stationary contact of the second dual-way selection switch is electrically connected with a second end of the fifth inductor.
7. The radio frequency coupling device according to claim 6, wherein the first dual-way selector switch and the second dual-way selector switch are built in the power interface and are both flip-chip switches;
when the power interface is inserted into the power connector, the movable contact of the first double-circuit selection switch is communicated with the first fixed contact, and the movable contact of the second double-circuit selection switch is communicated with the first fixed contact; when the power interface is not plugged into the power connector, the movable contact of the first double-circuit selection switch is communicated with the second fixed contact, and the movable contact of the second double-circuit selection switch is communicated with the second fixed contact.
8. The rf coupling device of claim 1, wherein the rf coupling module is a passive device.
9. A radio frequency system, comprising: radio frequency transceiver equipment, access equipment, a power supply and one or more radio frequency coupling devices as claimed in any one of claims 1 to 8;
the signal input interface of the first-stage radio frequency coupling device is connected with the radio frequency transceiving equipment, the second signal output interface of the previous-stage radio frequency coupling device is connected with the signal input interface of the next-stage radio frequency coupling device, the first signal output interface of the radio frequency coupling device is connected with the access equipment, and the power supply interface of at least one radio frequency coupling device is connected with the power supply.
10. The radio frequency system according to claim 9, wherein the radio frequency transceiver device comprises a base station or a radio remote unit.
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| CN202023257316.9U CN213754980U (en) | 2020-12-29 | 2020-12-29 | Radio frequency coupling device and radio frequency system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112601296A (en) * | 2020-12-29 | 2021-04-02 | 京信网络系统股份有限公司 | Radio frequency coupling device and radio frequency system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112601296A (en) * | 2020-12-29 | 2021-04-02 | 京信网络系统股份有限公司 | Radio frequency coupling device and radio frequency system |
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