CN218514446U - Signal transmission circuit, network transformer and signal transmission equipment - Google Patents
Signal transmission circuit, network transformer and signal transmission equipment Download PDFInfo
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- CN218514446U CN218514446U CN202220880889.7U CN202220880889U CN218514446U CN 218514446 U CN218514446 U CN 218514446U CN 202220880889 U CN202220880889 U CN 202220880889U CN 218514446 U CN218514446 U CN 218514446U
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Abstract
The application belongs to the field of signal transmission and provides a signal transmission circuit, a network transformer and signal transmission equipment. The first differential signal end and the second differential signal end are used for being connected with a first differential signal and a second differential signal, the noise suppression module is connected with the first differential signal end and the second differential signal end and used for suppressing common-mode noise, the direct current suppression module is connected with the noise suppression module and used for filtering direct current signals in the differential signals, the anti-static module is connected with the direct current suppression module and used for shielding interference of external static signals, and the surge suppression module is connected with the anti-static module and used for suppressing surge voltage in signals output by the anti-static module.
Description
Technical Field
The application belongs to the field of signal transmission, and particularly relates to a signal transmission circuit, a network transformer and signal transmission equipment.
Background
When the device needs to use a network, the device usually needs to transmit network signals through a network interface, and a network transformer is usually needed to be arranged at the network interface of the device, and the network signals output by the network interface are coupled and filtered by using coils coupled in a differential mode to enhance the signals, and are coupled to the other end of the connecting network wire with different levels through conversion of an electromagnetic field.
However, the existing network transformer has problems in that the manufacturing cost is high and the transceiver is damaged by a surge voltage in the network transformer.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide a signal transmission circuit, a network transformer and signal transmission equipment, aim at solving current network transformer manufacturing cost higher and can damage the problem of transceiver to the surge voltage among the network transformer.
The present application provides in one aspect a signal transmission circuit comprising:
the first differential signal end is used for accessing a first differential signal;
the second differential signal end is used for accessing a second differential signal;
the noise suppression module is connected with the first differential signal end and the second differential signal end and used for suppressing common-mode noise in the first differential signal and the second differential signal;
the direct current suppression module is connected with the noise suppression module and used for filtering direct current signals in the first differential signal and the second differential signal;
the anti-static module is connected with the direct current suppression module and used for shielding the interference of external static signals on the first differential signal and the second differential signal;
and the surge suppression module is connected with the anti-static module and is used for suppressing surge voltage in the signal output by the anti-static module.
In one embodiment, the noise suppression module includes a first common mode choke and a second common mode choke; wherein the content of the first and second substances,
the first end of the first common mode choke and the third end of the second common mode choke are connected with the second differential signal end in common, the second end of the first common mode choke is grounded, the third end of the first common mode choke and the second end of the second common mode choke are connected with the first differential signal end in common, and the fourth end of the first common mode choke is grounded; the first end of the second common mode choke coil and the fourth end of the second common mode choke coil are connected with the direct current suppression module.
In one embodiment, the first common mode choke and the second common mode choke are both common mode inductors.
In one embodiment, the common mode inductor is a chip common mode choke.
In one embodiment, the dc suppression module includes a first capacitor and a second capacitor; wherein, the first and the second end of the pipe are connected with each other,
the first end of the first capacitor is connected with the first output end of the noise suppression module, the second end of the first capacitor is connected with the first input end of the direct current suppression module, the first end of the second capacitor is connected with the second output end of the noise suppression circuit, and the second end of the second capacitor is connected with the second input end of the direct current suppression module
In one embodiment, the static electricity prevention module comprises a third capacitor and a fourth capacitor; wherein, the first and the second end of the pipe are connected with each other,
the first end of the third capacitor is connected with the first output end of the direct current suppression module, the second end of the third capacitor is grounded, the first end of the fourth capacitor is connected with the second output end of the direct current suppression module, and the second end of the fourth capacitor is grounded.
In one embodiment, the surge suppression module comprises a first combined transient diode; the first end of the first combined transient diode is connected with the first output end of the anti-static module, and the second end of the first combined transient diode is connected with the second output end of the anti-static module.
The present application provides, in another aspect, a network transformer, where the network transformer is disposed between a network interface and a transceiver, and the network transformer is characterized by including the signal transmission circuit described in any one of the above embodiments, where the signal transmission circuit is disposed between the network interface and the transceiver.
In one embodiment, the network transformer includes a first signal transmission circuit, a second signal transmission circuit, a third signal transmission circuit, and a fourth signal transmission circuit; wherein, the first and the second end of the pipe are connected with each other,
the first signal transmission circuit is connected between the first output port and the second output port of the network interface and the transceiver, the second signal transmission circuit is connected between the third output port of the network interface and the transceiver, the fourth output port of the network interface and the transceiver, the third signal transmission circuit is connected between the fifth output port of the network interface and the sixth output port of the network interface and the transceiver, and the fourth signal transmission circuit is connected between the seventh output port of the network interface and the eighth output port of the network interface and the transceiver.
The present application finally provides a signal transmission device comprising a signal transmission circuit as described in any of the above embodiments or comprising a network transformer as described in any of the above embodiments.
The signal transmission circuit comprises a first differential signal end, a second differential signal end, a noise suppression module, a direct current suppression module, an anti-static module and a surge suppression module. The device comprises a first differential signal end, a second differential signal end, a noise suppression module, a direct current suppression module and an anti-static module, wherein the first differential signal end is used for accessing a first differential signal, the second differential signal end is used for accessing a second differential signal, the noise suppression module is connected with the first differential signal end and the second differential signal end and used for suppressing common-mode noise in the first differential signal and the second differential signal, the direct current suppression module is connected with the noise suppression module and used for filtering direct current signals in the first differential signal and the second differential signal, the anti-static module is connected with the direct current suppression module and used for shielding interference of external static signals on the first differential signal and the second differential signal, and the surge suppression module is connected with the anti-static module and used for suppressing surge voltage in signals output by the anti-static module. The signal transmission circuit adopts the design of the separated network transformer to solve the problem of higher manufacturing cost of the network transformer, and the surge suppression module solves the problem that the transceiver can be damaged by surge voltage.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a functional block diagram of a signal transmission circuit provided in an embodiment of the present application;
fig. 2 is a schematic circuit diagram of a noise suppression module according to an embodiment of the present disclosure;
fig. 3 is a schematic circuit diagram of a dc suppression module and an anti-static module according to an embodiment of the present disclosure;
fig. 4 is a schematic circuit diagram of a signal transmission circuit according to an embodiment of the present disclosure;
fig. 5 is a schematic circuit diagram of a network transformer according to an embodiment of the present disclosure.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the transmission process of network signals, the network signals are transmitted to a transceiver of a receiving network through a network interface, a network transformer is usually required at the interface of network connection, the network transformer filters differential signals sent by the network interface by using differential mode coupled coil coupling to enhance signals, and the differential signals are connected to the transceiver through a network cable. The transceiver device may also output a network signal to an external transceiver through a network transformer.
The network transformer enhances the network signal, so the network signal can be transmitted to a longer distance, the traditional network transformer adopts an integrated network transformer to carry out differential mode coupling on the differential signal, but the integrated network transformer needs to be manufactured together with a network port, the manufacturing efficiency of the network transformer is lower, the manufacturing cost is higher, and the problem that surge voltage in the network signal can damage a transceiver exists.
In order to solve the above problem, the present application provides, in one aspect, a signal transmission circuit, as shown in fig. 1, the signal transmission circuit includes a first differential signal terminal B1, a second differential signal terminal B2, a noise suppression module 110, a dc suppression module 120, an anti-static module 130, and a surge suppression module 140. The first differential signal terminal B1 is connected to a first differential signal, the second differential signal terminal B2 is connected to a second differential signal, and the noise suppression module 110 is connected to the first differential signal terminal B1 and the second differential signal terminal B2, and is configured to perform suppression processing on common mode noise in the first differential signal and the second differential signal. The dc suppression module 120 is connected to the noise suppression module 110, and is configured to filter the dc signal in the first differential signal and the second differential signal.
The anti-static module 130 is connected to the dc suppression module 120, and is configured to shield interference of an external static signal on the first differential signal and the second differential signal, where a first output end of the anti-static module 130 serves as a third differential signal end D1 of the signal transmission circuit to output the first differential signal, and a second output end of the anti-static module 130 serves as a fourth differential signal end D2 of the signal transmission circuit to output the second differential signal.
Specifically, as shown in fig. 1, the first differential signal and the second differential signal are a pair of differential signals with opposite phases, the first differential signal is input to the signal transmission circuit through the first differential signal terminal B1, and the second differential signal is input to the signal transmission circuit through the second differential signal terminal B2. The noise suppression module 110 receives the first differential signal and the second differential signal and suppresses common mode noise in the first differential signal and the second differential signal, and the dc suppression module 120 is connected to the noise suppression module 110 and prevents the dc signal from affecting the quality of the first differential signal and the second differential signal by suppressing the dc signal in the first differential signal and the second differential signal.
The anti-static module 130 is connected to the dc suppression module 120, and can conduct and ground external static signals, so as to prevent static electricity from interfering with the first differential signal and the second differential signal. The surge suppressing module 140 suppresses the surge voltage in the signal transmission circuit, so as to prevent the transceiver from being damaged by the surge voltage, where the transceiver is used to receive or transmit a network signal, and in the network interface circuit, the transceiver is a network chip.
In this embodiment, the noise suppression module 110 may perform suppression processing on common mode noise in the first differential signal and the second differential signal, so as to achieve a suppression function on an interference signal, and the surge suppression module 140 may prevent damage to the transceiver due to surge voltage generated by a signal transmission circuit in a lightning strike or plugging and unplugging of a power supply. The signal transmission circuit and the network interface can be separately arranged, so that the manufacturing cost of the signal transmission circuit is reduced.
In one embodiment, referring to fig. 2, the noise suppression module 110 includes a first common mode choke U1 and a second common mode choke U2. The first end of the first common mode choke U1 and the third end of the second common mode choke U2 are connected to a second differential signal terminal B2, the second end of the first common mode choke U1 is grounded GND, the third end of the first common mode choke U1 and the second end of the second common mode choke U2 are connected to a first differential signal terminal B1, and the fourth end of the first common mode choke U1 is grounded GND. The first terminal of the second common mode choke U2 and the fourth terminal of the second common mode choke U2 are connected to the dc suppression module 120.
Specifically, as shown in fig. 2, the first end of the first common mode choke U1 receives the second differential signal, the third end of the first common mode choke U1 receives the first differential signal, the phases of the first differential signal and the second differential signal are opposite, and the first common mode choke U1 isolates signals between the transceiver and the network interface, so as to prevent signals with different voltages from damaging the transceiver. The second common mode choke U2 is connected in the signal transmission circuit, and the second terminal of the second common mode choke U2 receives the first differential signal, and the third terminal of the second common mode choke U2 receives the second differential signal, and outputs the first differential signal and the second differential signal, which suppress the common mode noise, from the first terminal and the fourth terminal of the second common mode choke U2.
In this embodiment, the first common mode choke U1 and the second common mode choke U2 suppress common mode noise in the first differential signal and the second differential signal, and prevent the network interface from being directly electrically connected to the transceiver, thereby solving the problem of poor signal quality of the differential signals.
In one embodiment, as shown in fig. 2, the first common mode choke U1 and the second common mode choke U2 are both common mode inductors.
In one embodiment, as shown in fig. 2, the first common mode choke U1 and the second common mode choke U2 are patch common mode chokes.
Specifically, the inductance coils in the first common mode choke coil U1 and the second common mode choke coil U2 are patch type common mode choke coils automatically wound by machinery, the coils with the same coil turns are symmetrically wound on the same ferrite core ring magnet by adopting the machine, a common mode choke coil with four ports is generated, manual winding is needed for the integrated common mode choke coil, the non-uniformity of winding is low, the consistency of the patch type transformer coils automatically wound by the machine is high, the manufacture is easier, and the manufacture cost is reduced.
In this embodiment, the first common mode choke coil U1 and the second common mode choke coil U2 are patch type common mode inductors, the patch type common mode inductors have a small size and are convenient to install compared with the traditional common mode inductors, and can be suitable for surface mounting, the first common mode choke coil U1 and the second common mode choke coil U2 are welded in the signal transmission circuit in a reflow soldering mode, the circuit space of the signal transmission circuit is reduced, and meanwhile, the manufacturing difficulty of the signal transmission circuit is also reduced.
In one embodiment, referring to fig. 3, the dc suppression module 120 includes a first capacitor C1 and a second capacitor C2. A first end of the first capacitor C1 is connected to the first output end of the noise suppression module 110, a second end of the first capacitor C1 is connected to the first input end of the dc suppression module 130, a first end of the second capacitor C2 is connected to the second output end of the noise suppression circuit 110, and a second end of the second capacitor C2 is connected to the second input end of the dc suppression module 130.
Specifically, with continued reference to fig. 3, the first capacitor C1 is connected in series in the transmission line of the first differential signal terminal B1 and receives the first differential signal; the second capacitor C2 is connected in series in the transmission line of the second differential signal terminal B2 and receives the second differential signal. The first capacitor C1 may suppress the dc signal in the first differential signal, and the second capacitor C2 may suppress the dc signal in the second differential signal.
The first capacitor C1 suppresses the dc signal in the first differential signal, the second capacitor C2 suppresses the dc signal in the second differential signal, and the dc suppression module 120 can improve the output quality of the first differential signal and the second differential signal, thereby solving the problem of poor signal quality of the first differential signal and the second differential signal.
In one embodiment, referring to fig. 3, the anti-static module 130 includes a third capacitor C3 and a fourth capacitor C4. A first end of the third capacitor C3 is connected to the first output end of the noise suppressing module 120, a second end of the third capacitor C3 is grounded GND, a first end of the fourth capacitor C4 is connected to the second output end of the dc suppressing module 120, and a second end of the fourth capacitor C4 is grounded GND.
In this embodiment, the third capacitor C3 and the fourth capacitor C4 absorb external static electricity and guide the external static electricity to the ground, and the third capacitor C3 and the fourth capacitor C4 are used for preventing the external static electricity from interfering with the first differential signal and the second differential signal and also used for preventing the external static electricity from damaging circuit components of the signal transmission circuit.
In one embodiment, referring to fig. 4, the surge suppression module 140 includes a first combined transient diode TVS1. A first end of the first combined transient diode TVS1 is connected to the first output end of the anti-static module 130, and a second end of the first combined transient diode TVS1 is connected to the second output end of the anti-static module 130.
Specifically, in this embodiment, the first combined transient diode TVS1 is connected in parallel to two ends of the transceiver, and when the signal transmission circuit is struck by lightning or a surge voltage generated by plugging and unplugging the power supply, the surge voltage is absorbed by the first combined transient diode TVS.
In this embodiment, the first combined transient diode TVS can suppress the surge voltage in the signal output by the anti-static module, and the problem that the transceiver is damaged by the surge voltage in the signal transmission circuit is solved.
In another aspect, the present application provides a network transformer, as shown in fig. 5, disposed between the network interface 200 and the transceiver 300, wherein the network transformer includes the signal transmission circuit described in any one of the above embodiments, and the signal transmission circuit is disposed between the network interface 200 and the transceiver 300.
In this embodiment, the network transformer receives the differential signal from the network interface 200 or the transceiver 300, and performs coupling filtering on the differential signal to enhance the signal quality of the differential signal.
In one embodiment, a network transformer includes a first signal transmission circuit, a second signal transmission circuit, a third signal transmission circuit, and a fourth signal transmission circuit. The first signal transmission circuit is connected among the first output port of the network interface, the second output port of the network interface and the transceiver, the second signal transmission circuit is connected among the third output port of the network interface, the fourth output port of the network interface and the transceiver, the third signal transmission circuit is connected among the fifth output port of the network interface, the sixth output port of the network interface and the transceiver, and the fourth signal transmission circuit is connected among the seventh output port of the network interface, the eighth output port of the network interface and the transceiver.
Specifically, as shown in fig. 5, a first end B1 of the first signal transmission circuit is connected to a first output port A1 of the network interface 200, a second end B2 of the first signal transmission circuit is connected to a second output port A2 of the network interface 200, a third end D1 of the first signal transmission circuit is connected to a first port E1 of the transceiver 300, and a fourth end D2 of the first signal transmission circuit is connected to a second port E2 of the transceiver 300; a first end B3 of the second signal transmission circuit is connected to the third output port A3 of the network interface 200, a second end B3 of the second signal transmission circuit is connected to the second output port A3 of the network interface 200, a third end D3 of the second signal transmission circuit is connected to the third port E3 of the transceiver 300, and a fourth end D4 of the second signal transmission circuit is connected to the fourth port E4 of the transceiver 300; a first end B5 of the third signal transmission circuit is connected to the fifth output port A5 of the network interface 200, a second end B6 of the third signal transmission circuit is connected to the sixth output port A6 of the network interface 200, a third end D5 of the third signal transmission circuit is connected to the fifth port E5 of the transceiver 300, and a fourth end D6 of the third signal transmission circuit is connected to the sixth port E6 of the transceiver 300; a first end B7 of the fourth signal transmission circuit is connected to the seventh output port A7 of the network interface 200, a second end B8 of the fourth signal transmission circuit is connected to the eighth output port A8 of the network interface 200, a third end D7 of the fourth signal transmission circuit is connected to the seventh port E7 of the transceiver 300, and a fourth end D8 of the fourth signal transmission circuit is connected to the eighth port E8 of the transceiver 300.
In this embodiment, the four signal transmission circuits respectively correspond to four pairs of differential signals, each pair of differential signals includes two differential signals with opposite phases, when the four pairs of differential signals pass through the four signal transmission circuits, the signal transmission circuits filter the differential signals, so as to suppress common mode noise in the differential signals, and the signal transmission circuits further suppress direct current signals in the differential signals, so as to improve signal quality of the differential signals. The network transformer is a separated transformer, so the manufacturing cost is low and the manufacturing efficiency is high.
In one embodiment, the network interface is an RJ45 connector.
Fig. 5 is a schematic circuit diagram of a network transformer according to this embodiment, in fig. 4, the network transformer includes four signal transmission circuits, and a first common mode choke U1, a second common mode choke U2, a third common mode choke U3, a fourth common mode choke U4, a fifth common mode choke U5, a sixth common mode choke U6, a seventh common mode choke U7, and an eighth common mode choke U8 in the signal transmission circuits are used as a noise suppression module 110 of the signal transmission circuits. The first capacitor C1, the second capacitor C2, the fifth capacitor C5, the sixth capacitor C6, the ninth capacitor C9, the tenth capacitor C10, the eleventh capacitor C11, and the twelfth capacitor C12 are used as the dc suppression module 120 of the signal transmission circuit. The third capacitor C3, the fourth capacitor C4, the seventh capacitor C7, the eighth capacitor C8, the eleventh capacitor C11, the twelfth capacitor C12, the fifteenth capacitor C15 and the sixteenth capacitor C16 are used as the anti-static module 130 of the signal transmission circuit. The first, second, third and fourth combined transient diodes TVS1, TVS2, TVS3 and TVS4 constitute a surge suppression module 140 of the signal transmission circuit.
The present application finally provides a signal transmission device comprising the signal transmission circuit described in any of the above embodiments or comprising the network transformer described in any of the above embodiments.
The signal transmission circuit comprises a first differential signal end, a second differential signal end, a noise suppression module, a direct current suppression module, an anti-static module and a surge suppression module. The first differential signal end is used for accessing a first differential signal, the second differential signal end is used for accessing a second differential signal, the noise suppression module is connected with the first differential signal end and the second differential signal end and used for suppressing common-mode noise in the first differential signal and the second differential signal, the direct current suppression module is connected with the noise suppression module and used for filtering direct current signals in the first differential signal and the second differential signal, the anti-static module is connected with the direct current suppression module and used for shielding interference of external static signals on the first differential signal and the second differential signal, and the surge suppression module is connected with the anti-static module and used for suppressing surge voltage in signals output by the anti-static module. The signal transmission circuit adopts the design of the separated network transformer to solve the problem of higher manufacturing cost of the network transformer, and the surge suppression module solves the problem that the transceiver can be damaged by surge voltage.
In the above embodiments, the description of each embodiment has its own emphasis, and reference may be made to the related description of other embodiments for parts that are not described or recited in any embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A signal transmission circuit, characterized in that the signal transmission circuit comprises:
the first differential signal end is used for accessing a first differential signal;
the second differential signal end is used for accessing a second differential signal;
the noise suppression module is connected with the first differential signal end and the second differential signal end and used for suppressing common-mode noise in the first differential signal and the second differential signal;
the direct current suppression module is connected with the noise suppression module and used for filtering direct current signals in the first differential signal and the second differential signal;
the anti-static module is connected with the direct current suppression module and used for shielding the interference of external static signals on the first differential signal and the second differential signal;
and the surge suppression module is connected with the anti-static module and is used for suppressing surge voltage in the signal output by the anti-static module.
2. The signal transmission circuit of claim 1, wherein the noise suppression module includes a first common mode choke and a second common mode choke; wherein, the first and the second end of the pipe are connected with each other,
the first end of the first common mode choke and the third end of the second common mode choke are connected with the second differential signal end in common, the second end of the first common mode choke is grounded, the third end of the first common mode choke and the second end of the second common mode choke are connected with the first differential signal end in common, and the fourth end of the first common mode choke is grounded; the first end of the second common mode choke coil and the fourth end of the second common mode choke coil are connected with the direct current suppression module.
3. The signal transmission circuit of claim 2, wherein the first common mode choke and the second common mode choke are both common mode inductors.
4. The signal transmission circuit of claim 3, wherein the common mode inductor is a patch common mode choke.
5. The signal transmission circuit of claim 3, wherein the DC suppression module comprises a first capacitor and a second capacitor; wherein, the first and the second end of the pipe are connected with each other,
the first end of the first capacitor is connected with the first output end of the noise suppression module, the second end of the first capacitor is connected with the first input end of the direct current suppression module, the first end of the second capacitor is connected with the second output end of the noise suppression circuit, and the second end of the second capacitor is connected with the second input end of the direct current suppression module.
6. The signal transmission circuit of claim 1, the static electricity prevention module comprising a third capacitor and a fourth capacitor; wherein the content of the first and second substances,
the first end of the third capacitor is connected with the first output end of the direct current suppression module, the second end of the third capacitor is grounded, the first end of the fourth capacitor is connected with the second output end of the direct current suppression module, and the second end of the fourth capacitor is grounded.
7. The signal transmission circuit of claim 1, wherein the surge suppression module comprises a first combined transient diode; the first end of the first combined transient diode is connected with the first output end of the anti-static module, and the second end of the first combined transient diode is connected with the second output end of the anti-static module.
8. A network transformer arranged between a network interface and a transceiver, comprising a signal transmission circuit according to any of claims 1-7, the signal transmission circuit being arranged between the network interface and the transceiver.
9. The network transformer of claim 8, wherein the network transformer comprises a first signal transmission circuit, a second signal transmission circuit, a third signal transmission circuit, and a fourth signal transmission circuit; wherein the content of the first and second substances,
the first signal transmission circuit is connected between the first output port and the second output port of the network interface and the transceiver, the second signal transmission circuit is connected between the third output port of the network interface and the transceiver, the fourth output port of the network interface and the transceiver, the third signal transmission circuit is connected between the fifth output port of the network interface and the sixth output port of the network interface and the transceiver, and the fourth signal transmission circuit is connected between the seventh output port of the network interface and the eighth output port of the network interface and the transceiver.
10. A signal transmission apparatus comprising a signal transmission circuit as claimed in any one of claims 1 to 7 or a network transformer as claimed in any one of claims 8 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220880889.7U CN218514446U (en) | 2022-04-12 | 2022-04-12 | Signal transmission circuit, network transformer and signal transmission equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220880889.7U CN218514446U (en) | 2022-04-12 | 2022-04-12 | Signal transmission circuit, network transformer and signal transmission equipment |
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| CN218514446U true CN218514446U (en) | 2023-02-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117220698A (en) * | 2023-11-08 | 2023-12-12 | 广州龙之音电子科技有限公司 | Broadcast transmitter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117220698A (en) * | 2023-11-08 | 2023-12-12 | 广州龙之音电子科技有限公司 | Broadcast transmitter |
| CN117220698B (en) * | 2023-11-08 | 2024-02-09 | 广州龙之音电子科技有限公司 | Broadcast transmitter |
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