Two-end feed power distribution device

Abstract

The utility model relates to a two-end feed power distribution device, and belongs to the field of microwave communication. One end part of the device is provided with a direct current bias device, and the direct current bias device is provided with a radio frequency and power supply voltage port which is used for being connected with an output port of front-end equipment so as to receive a radio frequency signal of the front-end equipment and transmit a direct current signal to the front-end equipment; a plurality of direct-current bias devices are arranged at the other end part of the device, and radio frequency and power supply voltage ports are respectively arranged on the direct-current bias devices and are used for being connected with input ports of rear-end equipment so as to receive direct-current signals of the rear-end equipment and transmit radio-frequency signals to the rear-end equipment; a power divider is utilized to distribute radio frequency signals sent by front-end equipment into multiple paths of radio frequency signals so as to transmit the multiple paths of radio frequency signals to each piece of rear-end equipment. Each port of the two-end feed power distribution device simultaneously has direct current and radio frequency characteristics, during specific application, an independent direct current bias voltage port and an independent radio frequency port do not need to be additionally provided, and the ports can be flexibly expanded according to requirements of back-end equipment.

Description

Technical Field

[0001] This utility model belongs to the field of microwave communication and relates to a two-end power distribution device for use in navigation link system communication. Background Technology

[0002] The two-end power distribution device is based on the fundamental principle of a DC biaser, effectively utilizing DC signals to achieve radio frequency (RF) signal transmission in practical system applications. The existing DC biaser (Bias Tee, BIAS-T) is a three-port network device. The three ports are a radio frequency (RF) port, a direct current bias (DC) port, and a radio frequency and direct current (RF&DC) port. The DC port consists of a feeding inductor used to add DC bias voltage while preventing AC signals from the RF port from leaking into the power supply system. The RF port consists of a DC blocking capacitor used to input RF signals and also blocks the DC bias voltage from the bias port. The radio frequency and direct current (RF&DC) port connects to a device that can simultaneously receive both DC bias voltage and RF signals.

[0003] In practical system applications, front-end devices need to simultaneously receive DC bias voltage and transmit RF signals. If only existing DC biasers are used in combination, connecting the RF and DC ports to the device to achieve its function requires both DC and RF ports to provide DC bias voltage and receive RF signals respectively. However, the number of ports and their usage requirements often cannot meet the demands of actual system applications. In practical applications, both front-end and back-end devices usually possess both RF and DC attributes, and their RF and DC ports (or RF and DC ports) are pre-fixed when connected. While this fixation helps ensure system stability and reliability, it can also limit system flexibility and scalability; moreover, simply using multiple DC biasers simultaneously does not adequately achieve system link communication. In practical system applications, the back-end may involve two or more devices that need to simultaneously or time-divisionally provide DC bias voltage to the front-end device (e.g., an active antenna) and receive RF signals from it. Simply relying on multiple BIAS-Ts to achieve this functionality cannot meet the full requirements of the system. Utility Model Content

[0004] To address the problems existing in current navigation link system communication technologies, this invention aims to provide a single physical port capable of simultaneously providing DC bias voltage and a radio frequency (RF) path. This single port can power the front-end equipment, enabling the active antenna to function properly and receive RF signals; and simultaneously transmit the RF signals to the back-end equipment through the same port.

[0005] Therefore, the purpose of this utility model is to provide a two-end power distribution device to address the needs in practical system applications, namely, that two or more back-end devices need to be able to simultaneously or time-sharingly provide DC bias voltage to the front-end device and receive radio frequency signals from the front-end device.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A two-terminal power distribution device, comprising:

[0008] The first DC bias 100 is located at one end of the device. The first DC bias 100 is provided with radio frequency and power supply voltage ports 5 for connecting to the output port of the front-end device to receive radio frequency signals from the front-end device and transmit DC signals to the front-end device.

[0009] The second DC bias 101 and the third DC bias 102 are located at the other end of this device. The second DC bias 101 and the third DC bias 102 are respectively provided with radio frequency and power supply voltage ports 5 for connecting to the input port of the back-end device to receive DC signals from the back-end device and transmit radio frequency signals to the back-end device.

[0010] The power divider 3 is connected to the first DC bias unit 100 and distributes the radio frequency signal emitted by the front-end device into multiple radio frequency signals.

[0011] Furthermore, the number of DC biasers connected to the input ports of the back-end devices is greater than 2.

[0012] Furthermore, the first DC bias 100, the second DC bias 101 and the third DC bias 102 are also provided with a power supply inductor and a DC blocking capacitor.

[0013] Furthermore, an anti-backflow device 2 is provided on the path connecting the second DC bias 101 and the third DC bias 102 to the first DC bias 100 to prevent the DC bias voltage from flowing back into the downstream equipment.

[0014] Furthermore, the anti-backflow device 2 is a diode with unidirectional conduction function.

[0015] Furthermore, the second DC bias 101 and the third DC bias 102 are provided with radio frequency ports on the side connected to the power divider 3 to receive radio frequency signals transmitted by the power divider 3.

[0016] Furthermore, the second DC bias 101 and the third DC bias 102 connected to one side of the power divider 3 are also provided with DC ports to transmit DC signals to the first DC bias 100.

[0017] Furthermore, it also includes an LED status indicator 4, which is connected to the second DC bias 101 and the third DC bias 102 to display the working status of the corresponding back-end equipment.

[0018] The beneficial effects of this utility model are as follows:

[0019] Based on practical system applications, a three-port device (three RF and power supply voltage ports 5) was designed. Each port has both DC and RF characteristics, eliminating the need for separate DC bias voltage and RF ports during system application. Even when multiple back-end devices are required, the device can be expanded to a multi-port configuration. It provides a certain DC bias voltage backup function for system applications and enables multiple back-end devices to operate simultaneously or in a time-sharing manner. It features a working status indicator light 4 and anti-reverse current function for DC bias voltage. The circuit structure is simple, low-cost, easy to operate, and highly adaptable to various systems.

[0020] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, a preferred description of this utility model will be provided below with reference to the accompanying drawings, wherein:

[0022] Figure 1 This is a schematic diagram of a two-terminal power distribution device proposed in this utility model;

[0023] Figure 2 This is a schematic diagram of the DC link operation of a two-terminal power distribution device proposed in this utility model:

[0024] Figure 3 This is a schematic diagram of the radio frequency link operation of a two-end power distribution device proposed in this utility model;

[0025] Reference numerals: 100 - First DC bias connected to the output port of the front-end device; 101 - Second DC bias connected to the input port of the back-end device; 102 - Third DC bias connected to the input port of the back-end device; 2 - Anti-backflow device; 3 - Power divider; 4 - Operating status indicator; 5 - RF and power supply voltage ports. Detailed Implementation

[0026] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0027] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0028] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0029] Please see Figure 1 This is a schematic diagram of a two-end power distribution device proposed in this utility model; including: a first DC bias (100), a second DC bias (101) and a third DC bias (102), an anti-backflow device 2, a power distributor 3, a working status indicator 4, and a radio frequency and voltage for circuit or circuit voltage (RF&VCC) port 5.

[0030] This device includes at least three DC biasers; wherein, a first DC biaser 100 is located at one end of the device, and the radio frequency and power supply voltage ports 5 of the DC biaser 1 are connected to the output ports of the front-end device for receiving radio frequency signals from the front-end device and transmitting DC signals from the back-end device to the front-end device; the second DC biaser 101 and the third DC biaser 102 are located at the other end of the device, and the radio frequency and power supply voltage ports 5 of the second DC biaser 101 and the third DC biaser 102 are connected to the input ports of the back-end device one by one for receiving DC signals from the back-end device and transmitting radio frequency signals from the front-end device to the back-end device.

[0031] The output port of the front-end device (such as an active antenna or a device that requires DC power and can transmit radio frequency signals) transmits radio frequency signals to this device through the radio frequency and power supply voltage port 5 connected to it, and transmits the radio frequency signals to the back-end device through this device; the input port of the back-end device transmits DC signals to this device through the radio frequency and power supply voltage port 5 connected to it, and supplies power to the front-end device through this device.

[0032] The working principle of this device is as follows: When the first DC bias 100 connected to the front-end device receives the RF signal from the front-end device and the DC signal from the back-end device, it separates the RF signal from the DC signal. The separated RF signal is then distributed by the power divider 3 into two or more identical RF signals (consistent with the original RF signal in frequency, waveform, and information content). Each RF signal is transmitted to the respective back-end device through the RF port, DC blocking capacitor, and RF and power supply voltage port 5 on the DC bias 1 connected to the back-end device. At the same time, each back-end device transmits the DC bias voltage to the first DC bias 100 connected to the front-end device through the RF and power supply voltage port 5 and the feed inductor on the second DC bias 101 and the third DC bias 102 connected to this device. The first DC bias 100 then transmits each DC bias voltage to the front-end device through its RF and power supply voltage port 5. Based on the above working principle, it can be seen that: the back-end device connected to this device can provide DC bias voltage to the front-end device while also receiving radio frequency signals from the front-end device; similarly, the front-end device connected to this device can provide radio frequency signals to the back-end device while also receiving DC bias voltage signals from the back-end device; and the aforementioned DC bias voltage and radio frequency signals are transmitted through the same radio frequency and power supply voltage port 5.

[0033] Please see Figure 2 Here is a schematic diagram of the DC link operation of a two-terminal power distribution device proposed in this utility model: Please refer to Figure 3This is a schematic diagram of the radio frequency link operation of a two-end power distribution device proposed in this utility model;

[0034] Each RF and power supply voltage port 5 of this device, which connects to each front-end and back-end device, is a high-frequency port. Let the RF (radio frequency) signal and VCC (DC) signal of the second DC bias 101 connected to the input port of the back-end device B01 be RF_101 and VCC_101, respectively. Let the RF signal and VCC signal of the third DC bias 102 connected to the input port of the back-end device B02 be RF_102 and VCC_102, respectively. This device is connected to the front-end or back-end device through a high-frequency port.

[0035] Since this device operates in the same mode when processing two or more signals, this embodiment demonstrates the operating mode of one signal to illustrate the working process of the device:

[0036] like Figure 2 As shown, the operating mode of the DC link in this embodiment is as follows:

[0037] 1. The back-end device B01 generates the DC bias voltage required by the front-end device and transmits the DC signal VCC_101 to this device through the radio frequency and power supply voltage port 5 on the second DC biaser 101 connected to it.

[0038] 2. This device transmits VCC_101 to the first DC bias 100 connected to the front-end equipment through the feed inductor on the second DC bias 101.

[0039] 3. The first DC bias 100 transmits VCC_101 to the front-end device through its radio frequency and power supply voltage port 5.

[0040] Since this device, after receiving VCC_101 transmitted from the back-end device B01, will use the feed inductor in the second DC bias 101 to safely transmit VCC_101 to the front-end device; therefore, in this process, the diodes set on the DC path have unidirectional conduction function, forming an anti-backflow device 2 to prevent the DC signal caused by the misconnection of the front-end device from flowing back into the back-end device, thereby effectively avoiding possible damage to the back-end device; then, VCC_101 will also pass through the feed inductor of the first DC bias 100 connected to the front-end device, and provide the required DC bias voltage to the front-end device to ensure that the front-end device can work continuously and stably.

[0041] This device also includes a status indicator light 4, such as an LED status indicator light 4, for displaying the device's status. This LED status indicator light 4 is connected to a second DC bias unit 101, which is used to connect to the backend device B01; therefore, the LED status indicator light 4 is powered by VCC_101 provided by the backend device B01. This status indicator light 4 provides an intuitive status indication without affecting the normal operation of the frontend device, clearly showing which backend device is currently operating in the system. This design facilitates system monitoring and maintenance, and also improves system reliability and maintainability.

[0042] Furthermore, to ensure the stability and reliability of the DC bias voltage of the front-end devices, the system employs a strategy of multiple DC bias voltages acting as backups for each other. This means that if the DC bias voltage output by one of the back-end devices becomes abnormal, such as due to voltage instability or power outage, other normal back-end devices will be able to immediately take over the power supply task and continue to provide a stable DC bias voltage to the front-end devices. This backup mechanism effectively avoids the risk of the entire system being paralyzed due to the failure of a single device, ensuring the continuous and normal operation of the system.

[0043] By combining the status indication of LED indicator 4 and the backup mechanism of multiple DC bias voltages, this device not only improves the reliability and stability of the connection between the back-end and front-end devices, but also enhances the overall performance and fault tolerance of the system.

[0044] like Figure 3 As shown, the operating mode of the radio frequency link in this embodiment is as follows:

[0045] 1. After receiving the DC bias voltage and obtaining DC power, the front-end device receives the radio frequency signal (from the antenna, signal source or other radio frequency equipment) and transmits the radio frequency signal to this device through the radio frequency and power supply voltage port 5 on the first DC bias 100 connected to it.

[0046] 2. This device transmits the radio frequency signal to the power divider 3 via the first DC bias 100 mentioned above;

[0047] 3. Power divider 3 distributes the radio frequency signal into two or more identical radio frequency signals;

[0048] 4. Each radio frequency signal (RF_101 and RF_102) is transmitted to the corresponding back-end device through the second DC bias 101 and the third DC bias 102, the DC blocking capacitor, and the radio frequency and power supply voltage port 5 connected to each back-end device.

[0049] Compared with the prior art, the technical advantages of this utility model are as follows:

[0050] Based on practical system applications, this invention designs a three-port device (three RF and power supply voltage ports 5). Each port simultaneously possesses both DC and RF characteristics, eliminating the need for separate DC bias voltage and RF ports during system applications. If multiple backend devices require additional power, the device can be expanded to a multi-port configuration. It provides a DC bias voltage backup function for system applications, and features a working status indicator light 4 for simultaneous or time-sharing operation of multiple backend devices. It also offers reverse current protection for the DC bias voltage. The circuit structure is simple, low-cost, easy to operate, and highly adaptable to various systems.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A two-terminal power distribution device, characterized in that, include: The first DC bias (100) is located at one end of the device. The first DC bias (100) is provided with radio frequency and power supply voltage ports (5) for connecting to the output port of the front-end device to receive radio frequency signals from the front-end device and transmit DC signals to the front-end device. The second DC bias (101) and the third DC bias (102) are located at the other end of this device. The second DC bias (101) and the third DC bias (102) are respectively provided with radio frequency and power supply voltage ports (5) for connecting to the input port of the back-end device to receive DC signals from the back-end device and transmit radio frequency signals to the back-end device. The power divider (3) is connected to the first DC bias unit (100) to distribute the radio frequency signal emitted by the front-end device into multiple radio frequency signals.

2. The two-terminal power distribution device according to claim 1, characterized in that; The number of DC biasers connected to the input ports of the back-end devices is greater than 2.

3. The two-terminal power distribution device according to claim 2, characterized in that; The first DC bias (100), the second DC bias (101) and the third DC bias (102) are also provided with a power supply inductor and a DC blocking capacitor.

4. The two-terminal power distribution device according to claim 3, characterized in that; The second DC bias (101) and the third DC bias (102) are connected to the first DC bias (100) and are also provided with an anti-backflow device (2) to prevent the DC bias voltage from flowing back into the downstream equipment.

5. The two-terminal power distribution device according to claim 4, characterized in that; The backflow prevention device (2) A diode with unidirectional conduction function.

6. The two-terminal power distribution device according to claim 5, characterized in that; The second DC bias (101) and the third DC bias (102) are also provided with radio frequency ports on the side connected to the power divider (3) to receive radio frequency signals transmitted by the power divider (3).

7. The two-terminal power distribution device according to claim 6, characterized in that; The second DC bias (101) and the third DC bias (102) connected to one side of the power divider (3) are also provided with DC ports to transmit DC signals to the first DC bias (100).

8. The two-terminal power distribution device according to any one of claims 1 to 7, characterized in that; It also includes an LED working status indicator (4), which is connected to the second DC bias (101) and the third DC bias (102) to display the working status of the corresponding back-end equipment.

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