Radio frequency optical receiving device and method with reconfigurable channels

Abstract

The invention discloses a channel reconfigurable radio frequency optical receiving device and method. The device comprises a shell, and an optical routing unit, a photoelectric processing unit, a radio frequency routing unit and a power supply and control unit are arranged in the shell; and a rectangular optical fiber connector is arranged on the shell. According to the invention, a plurality of input multiplexing optical signals and single-path optical signals can be processed, and the definitions of the multiplexing optical signals and the single-path optical signals can be adjusted and reconstructed at will without redesigning and changing the device, so that the universality of the device is improved.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a radio frequency optical receiving device and method with reconfigurable channels. Background Art

[0002] In a multi-receiver system, the spatial RF signals received by the antenna array need to be transmitted to the processor after passing through the active front end. To reduce RF signal transmission loss and reduce the size, space, and weight of the equipment, RF signals are often converted into optical signals for transmission, either using multiplexed RF light or single-channel RF optical signals. Optical fiber transmission offers advantages such as low loss, wide bandwidth, strong interference resistance, compact size, and light weight. During system cascading or testing, the various received optical signals need to be converted back into a single-channel RF signal for use.

[0003] In practical applications, it is often necessary to use multiplexed RF optical signals or multiplexed RF optical signals and single-channel RF optical signals at the same time. Existing receiving devices only include one multiplexed RF optical signal interface and cannot process multiplexed RF optical signals, nor do they have the ability to process single-channel optical signals. Moreover, when the number and type of device channels change, the entire device structure needs to be redesigned, replaced, and re-debugged. At the same time, due to the large number of output RF ports, many RF cables need to be connected during use or testing, and manual switching of multiple signals also leads to inefficiency. Summary of the Invention

[0004] In view of this, the present application provides a channel-reconfigurable RF optical receiving device and method, which improves the utilization efficiency, versatility and scalability of the multi-channel RF optical receiving device through an optical routing unit, an optoelectronic processing unit, a RF routing unit, a power supply and control unit, etc.

[0005] The present application discloses a channel-reconfigurable radio frequency optical receiving device, which includes a housing, inside which are disposed an optical routing unit, an optoelectronic processing unit, a radio frequency routing unit, and a power supply and control unit; the housing is provided with a rectangular optical fiber connector; the rectangular optical fiber connector is used to input m-channel multiplexed optical signals and m*n-channel single-channel optical signals; the power supply and control unit is used to supply power to the optical routing unit, the optoelectronic processing unit, and the radio frequency routing unit, and to control a switch in the optical routing unit and a radio frequency switch component in the radio frequency routing unit to select on and off channels;

[0006] The optical routing unit is used to access m-channel multiplexed optical signals and m*n-channel single-channel optical signals, and realize the output exchange between any one-channel multiplexed optical signal and any one-channel single-channel optical signal;

[0007] The optoelectronic processing unit is used to convert the multiplexed optical signal output by the optical routing unit into multiple single-channel optical signals, convert the multiple single-channel optical signals and the single-channel optical signal directly output by the optical routing unit into radio frequency electrical signals, and transmit them to the radio frequency routing unit;

[0008] The RF routing unit is used to switch the multi-channel RF electrical signals output by the optoelectronic processing unit into a single-channel RF electrical signal, and then combine all the single-channel RF electrical signals into one RF electrical signal for output.

[0009] Furthermore, the optical routing unit includes an optical cable assembly, multiple optical routings, and a power control board; each optical routing unit includes a connection assembly, 2*(n+1) 2-to-1 optical switches, and 2 n-to-1 optical switches; wherein the connection assembly connects a rectangular optical fiber connector for connecting m-channel multiplexed optical signals and m*n-channel single-channel optical signals to each optical routing unit; the optical switch is used to select the m-channel multiplexed optical signals and the m*n-channel single-channel optical signals; the power control board is used to receive a DC power supply and control signal from a power supply and control unit to switch each switch in the optical routing unit, and by controlling different state combinations of the switches, the output of any multiplexed optical signal and a single-channel optical signal can be interchanged.

[0010] Furthermore, the optoelectronic processing unit includes multiple optical wavelength division multiplexers and multiple optoelectronic converters; the optical wavelength division multiplexers are connected to the optical routing unit, and are used to convert the multiplexed optical signal output by the optical routing unit into multiple single-channel optical signals and send them to the optoelectronic converter; the optoelectronic converter is used to receive the single-channel optical signal output by the optical wavelength division multiplexer, as well as the single-channel optical signal directly output by the optical routing unit, and convert all received optical signals into a corresponding number of independent radio frequency electrical signals, and transmit them to the radio frequency routing unit.

[0011] Furthermore, the RF routing unit is composed of an RF switch component and an RF combiner; wherein, the RF switch component is used to switch and select the multiple RF electrical signals output by the photoelectric converter into a single channel and then output it according to the control signal sent by the power supply and control unit; the RF combiner is used to combine the single-channel RF electrical signals output by all RF switch components into one RF electrical signal output.

[0012] Furthermore, the housing is also provided with a power supply and control interface; the power supply and control unit includes a power processing board and a control processing board;

[0013] The power supply and control interface is used to receive DC voltage and input it into the power processing board in the optical routing unit; it is also used to receive serial control signals and input them into the control processing board;

[0014] The power processing board is used to filter and transform the input DC voltage, and then use it as a DC power supply to supply power to the optical routing unit, optoelectronic processing unit, and RF routing unit.

[0015] The control processing board is used to convert the received serial control signal into a TTL level signal, and then send the TTL level signal to the RF switch components in the optical routing unit and the RF routing unit to control the on / off selection of the channel.

[0016] Furthermore, a connector is provided on the housing; the connector is used to receive a radio frequency electrical signal output by the radio frequency combiner in the radio frequency routing unit, thereby realizing single-port radio frequency output reconstruction.

[0017] Furthermore, the optical operating wavelength range of the optical routing unit is not less than the operating wavelength range of the optical signal input by the rectangular optical fiber connector;

[0018] The number of output channels contained in each optical wavelength division multiplexer is not less than the number of required multiple wavelength signals contained in each multiplexed light input by the rectangular optical fiber connector; the optical operating wavelength range of the optical wavelength division multiplexer is not less than the optical signal operating wavelength range of the optical routing unit;

[0019] The total number of photodetector chips contained in all optoelectronic converters shall not be less than the sum of the number of optical paths output by all optical wavelength division multiplexers and the number of single-channel optical signals input by the rectangular optical fiber connector, that is, j*q≥m*(r+n); the optical operating wavelength range of the optoelectronic converters shall not be less than the optical signal operating wavelength range of the optical wavelength division multiplexers and the optical routing unit; where j is the total number of optoelectronic converters, q is the number of photodetector chips contained in each optoelectronic converter, m is the total number of optical wavelength division multiplexers, r is the number of optical paths output by each optical wavelength division multiplexer, and n is the number of single-channel optical signals input by the rectangular optical fiber connector into each optical route.

[0020] Furthermore, the total number of input RF channels contained in all RF switch components is not less than the total number of output RF channels of the optoelectronic converters, that is, k*p≥j*q; the operating frequency range of the RF switch component is not less than the operating frequency range of the RF signal output by the optoelectronic converter; the cavity of the RF switch component is slotted to form a cavity wall according to the number of RF channels required for the RF electrical signal output by the optoelectronic converter, and is combined with an independent cover plate to perform single-channel separation to enhance the isolation between RF channels and prevent signal crosstalk; the RF channel is the channel inside the RF switch component; wherein k is the total number of RF switch components, p is the number of input RF channels contained in each RF switch component, j is the total number of optoelectronic converters, q is the RF channel output by each optoelectronic converter, and the RF channel output by each optoelectronic converter is equal to the number of photodetector chips contained in each optoelectronic converter;

[0021] The number of input RF channels included in the RF combiner is not less than the sum of the number of RF switch components; the operating frequency range of the RF combiner is not less than the operating frequency range of the RF switch components; and the microwave printed circuit chip is equipped with an inter-channel phase consistency adjustment element.

[0022] Furthermore, the input adaptation voltage range of the power processing board is not less than the operating voltage range of the external power supply of the device input by the power supply and control interface;

[0023] The power conversion circuit input adaptation voltage range of each power-consuming unit shall not be less than the operating voltage range output by the power processing board; each power-consuming unit includes an optical routing unit, a photoelectric processing unit and a radio frequency routing unit.

[0024] The present application also discloses a channel-reconfigurable radio frequency light receiving method, which is applicable to the channel-reconfigurable radio frequency light receiving device described above, comprising:

[0025] The rectangular optical fiber connector inputs m-channel multiplexed optical signals and m*n-channel single-channel optical signals; the power supply and control unit supplies power to the optical routing unit, optoelectronic processing unit, and radio frequency routing unit, and controls the switch in the optical routing unit and the radio frequency switch component in the radio frequency routing unit to select the on / off of the channel;

[0026] The optical routing unit receives m-channel multiplexed optical signals and m*n-channel single-channel optical signals, and realizes the output interchange between any one-channel multiplexed optical signal and any one-channel single-channel optical signal;

[0027] The optoelectronic processing unit converts the multiplexed optical signal output by the optical routing unit into multiple single-channel optical signals, converts the multiple single-channel optical signals and the single-channel optical signal directly output by the optical routing unit into radio frequency electrical signals, and transmits them to the radio frequency routing unit;

[0028] The radio frequency routing unit switches and selects the multiple radio frequency electrical signals output by the optoelectronic processing unit into a single radio frequency electrical signal, and then combines all the single radio frequency electrical signals into one radio frequency electrical signal for output.

[0029] Due to the adoption of the above technical solution, this application has the following advantages:

[0030] 1. This application integrates an optical switch, an optical wavelength division multiplexer, an optoelectronic converter, an RF switch component, and an RF combiner to process multiple input multiplexed RF light and single RF light signals, converting them into RF signal outputs. Furthermore, the definition of reconstructed multiplexed light and single-channel light can be adjusted arbitrarily without redesign, thereby improving the versatility of the device.

[0031] 2. The present application can reconfigure the types and quantities of optical path signals that the present application device can process by adjusting the models or quantities of optical wavelength division multiplexers and optoelectronic converters to meet the adaptability to different application requirements;

[0032] 3. This application uses the design of RF switches and RF combiners to significantly reduce the number of output interfaces. All inputs can be output through the same port, reducing external interconnection requirements, complexity, and cost.

[0033] 4. This application can reconfigure the total number of RF channels that the device of this application can handle by adjusting the model or number of RF switch components and RF combiners, thereby enhancing the versatility of device expansion and upgrade;

[0034] 5. This application has a reconfigurable output channel function. Any input RF optical signal from multiplexed light or single-channel light can be output at the same output port. Combined with an automatic control system, it can greatly improve the efficiency of signal use.

[0035] 6. This application uses a two-stage circuit cascade of an optical wavelength division multiplexer and a radio frequency switch component to ensure higher inter-channel isolation, thereby ensuring better output radio frequency signal quality;

[0036] 7. The modular and integrated design of this application ensures high reliability and versatility of the device while achieving low-loss, high-isolation and high-efficiency transmission of multiple optical signals to radio frequency signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments recorded in the embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0038] Figure 1 This is a block diagram of a radio frequency optical receiving device with reconfigurable channels according to an embodiment of the present application;

[0039] Figure 2 This is a block diagram of another radio frequency optical receiving device with reconfigurable channels according to an embodiment of the present application;

[0040] Figure 3 This is a block diagram of a 3×3 optical routing according to an embodiment of the present application;

[0041] Figure numerals: 1. Optoelectronic processing unit, 101. First optical wavelength division multiplexer, 102. Second optical wavelength division multiplexer, 103. First optical-to-electrical converter, 104. Second optical-to-electrical converter, 2. RF routing unit, 201. First RF switch component, 202. Second RF switch component, 203. RF combiner, 3. Power supply and control unit, 301. Power processing board, 302. Control processing board, 4. Optical routing unit, 401. First optical routing, 402. Second optical routing, 5. RF cable fixing component, 6. Housing, 7. Power supply and control interface, 8. Rectangular optical fiber connector, 9. SMA connector, 10. Coil optical fiber component. DETAILED DESCRIPTION

[0042] The present application is further described with reference to the accompanying drawings and embodiments. The embodiments described are only a part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field should fall within the scope of protection of the embodiments of the present application.

[0043] See also Figure 1 The present application provides an embodiment of a channel-reconfigurable radio frequency optical receiving device, which includes a housing 6, within which are disposed an optical routing unit 4, an optoelectronic processing unit 1, a radio frequency routing unit 2, and a power supply and control unit 3; a rectangular optical fiber connector 8 is disposed on the housing 6; the rectangular optical fiber connector 8 is configured to input m-channel multiplexed optical signals and m*n-channel single-channel optical signals; the power supply and control unit 3 is configured to supply power to the optical routing unit 4, the optoelectronic processing unit 1, and the radio frequency routing unit 2, and to control a switch in the optical routing unit 4 and a radio frequency switch component in the radio frequency routing unit 2 to select on and off channels;

[0044] The optical routing unit 4 is used to access m-channel multiplexed optical signals and m*n-channel single-channel optical signals, and realize the output exchange between any one of the multiplexed optical signals and the single-channel optical signal;

[0045] The optoelectronic processing unit 1 is used to convert the multiplexed optical signal output by the optical routing unit 4 into multiple single-channel optical signals, convert the multiple single-channel optical signals and the single-channel optical signal directly output by the optical routing unit 4 into radio frequency electrical signals, and transmit them to the radio frequency routing unit 2;

[0046] The RF routing unit 2 is used to switch the multiple RF electrical signals output by the optoelectronic processing unit 1 into a single RF electrical signal, and then combine all the single RF electrical signals into one RF electrical signal for output.

[0047] Optionally, the optical routing unit 4 includes an optical cable assembly, multiple optical routings and a power control board; each optical routing includes a connection assembly, 2*(n+1) 2-to-1 optical switches, and 2 n-to-1 optical switches; wherein the connection assembly is connected to a rectangular optical fiber connector 8 for accessing m-channel multiplexed optical signals and m*n-channel single optical signals to each optical routing; the optical switch is used to select m-channel multiplexed optical signals and m*n-channel single optical signals; the power control board is used to receive a DC power supply and a control signal from the power supply and control unit 3 to switch the switches in the optical routing unit 4, and by controlling different state combinations of the switches, the output of any multiplexed optical signal and the single optical signal can be interchanged.

[0048] Optionally, the optoelectronic processing unit 1 includes multiple optical wavelength division multiplexers and multiple optoelectronic converters; the optical wavelength division multiplexer is connected to the optical routing unit 4, and is used to convert the multiplexed optical signal output by the optical routing unit 4 into multiple single-channel optical signals and send them to the optoelectronic converter; the optoelectronic converter is used to receive the single-channel optical signal output by the optical wavelength division multiplexer, as well as the single-channel optical signal directly output by the optical routing unit 4, and convert all received optical signals into a corresponding number of independent radio frequency electrical signals, and transmit them to the radio frequency routing unit 2.

[0049] Optionally, the RF routing unit 2 is composed of an RF switch component and an RF combiner 203; wherein the RF switch component is used to switch and select the multiple RF electrical signals output by the photoelectric converter into a single channel and then output it according to the control signal sent by the power supply and control unit 3; the RF combiner 203 is used to synthesize the single-channel RF electrical signals output by all RF switch components into one RF electrical signal output.

[0050] Optionally, the housing 6 is further provided with a power supply and control interface 7; the power supply and control unit 3 includes a power processing board 301 and a control processing board 302;

[0051] The power supply and control interface 7 is used to receive a DC voltage and input it into the power processing board 301 in the optical routing unit 4; it is also used to receive a serial control signal and input it into the control processing board 302;

[0052] The power processing board 301 is used to filter and transform the input DC voltage and then use it as a DC power supply to supply power to the optical routing unit 4, optoelectronic processing unit 1 and radio frequency routing unit 2;

[0053] The control processing board 302 is used to convert the received serial control signal into a TTL level signal, and then send the TTL level signal to the radio frequency switch components in the optical routing unit 4 and the radio frequency routing unit 2 to perform on-off selection control of the channel.

[0054] Optionally, a connector is further provided on the housing 6; the connector is used to receive a radio frequency electrical signal output by the radio frequency combiner 203 in the radio frequency routing unit 2, thereby realizing single-port radio frequency output reconstruction.

[0055] Optionally, the optical operating wavelength range of the optical routing unit 4 is not less than the operating wavelength range of the optical signal input by the rectangular optical fiber connector 8;

[0056] The number of output channels included in each optical wavelength division multiplexer is not less than the number of required multiple wavelength signals included in each multiplexed light input by the rectangular optical fiber connector 8; the optical operating wavelength range of the optical wavelength division multiplexer is not less than the optical signal operating wavelength range of the optical routing unit 4;

[0057] The total number of photodetector chips contained in all optoelectronic converters is not less than the sum of the number of optical paths output by all optical wavelength division multiplexers and the number of single-channel optical signals input by the rectangular optical fiber connector 8, that is, j*q≥m*(r+n); the optical operating wavelength range of the optoelectronic converters is not less than the optical signal operating wavelength range of the optical wavelength division multiplexers and the optical routing unit 4; where j is the total number of optoelectronic converters, q is the number of photodetector chips contained in each optoelectronic converter, m is the total number of optical wavelength division multiplexers, r is the number of optical paths output by each optical wavelength division multiplexer, and n is the number of single-channel optical signals input by the rectangular optical fiber connector 8 into each optical route.

[0058] Optionally, the total number of input RF channels contained in all RF switch components is not less than the total number of output RF channels of the optoelectronic converters, that is, k*p≥j*q; the operating frequency range of the RF switch component is not less than the operating frequency range of the RF signal output by the optoelectronic converter; the cavity of the RF switch component is slotted to form a cavity wall according to the number of RF channels required for the RF electrical signal output by the optoelectronic converter, and single-channel separation is performed in combination with an independent cover plate to enhance the isolation between RF channels and prevent signal crosstalk; the RF channel is a channel inside the RF switch component; wherein k is the total number of RF switch components, p is the number of input RF channels contained in each RF switch component, j is the total number of optoelectronic converters, q is the RF channel output by each optoelectronic converter, and the RF channel output by each optoelectronic converter is equal to the number of photodetector chips contained in each optoelectronic converter;

[0059] The number of input RF channels included in the RF combiner 203 is not less than the sum of the number of RF switch components; the operating frequency range of the RF combiner 203 is not less than the operating frequency range of the RF switch components; and the microwave printed circuit chip is provided with an inter-channel phase consistency adjustment element.

[0060] Optionally, the power processing board 301 input adaptation voltage range is not less than the operating voltage range of the device external power supply input by the power and control interface 7;

[0061] The power conversion circuit input adaptation voltage range of each power-consuming unit is not less than the operating voltage range output by the power processing board 301; each power-consuming unit includes an optical routing unit, a photoelectric processing unit and a radio frequency routing unit.

[0062] In this embodiment, the RF switch assembly is connected to the power supply and control unit 3 via a low-frequency cable to achieve power and switch control, switching the multiple RF signals output from the optoelectronic converter to a single channel for output. The outputs of all RF switch assemblies are then sent to an RF combiner 203 via RF cables. Finally, the output of RF combiner 203 is connected to the SMA connector 9 on the housing 6 via RF coaxial cable, thereby achieving single-port RF output reconstruction.

[0063] In this embodiment of the present application, the power supply and control unit 3 includes a power processing board 301 and a control processing board 302. The DC power input of the power and control interface 7 on the housing 6 is connected to the power processing board 301 via a low-frequency cable. After filtering and voltage conversion, it is provided as a DC power supply to the optical routing unit 4, optoelectronic processing unit 1, and RF routing unit 2. The serial control signal from the power and control interface is connected to the control processing board 302 via a low-frequency cable, converted into a TTL signal, and then sent to the optical routing unit 4 and the RF switch assembly to control the on / off selection of the channel.

[0064] To ensure the device's electrical performance and ensure ease of maintenance and upgrades, each functional unit is encapsulated and integrated within a separate shielded housing. These units are then installed within the housing 6 through positioning holes, allowing for easy upgrades and maintenance. A fiber optic coil assembly 10 and an RF cable mounting assembly 5 are located within the housing 6 to enhance reliability. The housing 6 also features a rectangular fiber optic connector 8, a power and control interface 7, and an SMA connector 9. The bottom of the housing 6 features a heatsink structure to enhance overall heat dissipation and minimize the degradation of optoelectronic and RF components caused by heat accumulation.

[0065] Figure 2 The first optical wavelength division multiplexer 101 and the second optical wavelength division multiplexer 102 among the multiple optical wavelength division multiplexers are given as examples, the first photoelectric converter 103 and the second photoelectric converter 104 among the multiple photoelectric converters are given as examples; the first radio frequency switch component 201 and the second radio frequency switch component 202 among all the radio frequency switch components are given as examples; the first optical route 401 and the second optical route 402 among the multiple optical routes are given as examples.

[0066] The present application also provides an embodiment of a channel-reconfigurable radio frequency optical receiving method, which is applicable to the channel-reconfigurable radio frequency optical receiving device described in the above embodiment, including:

[0067] The rectangular optical fiber connector 8 inputs m-channel multiplexed optical signals and m*n-channel single-channel optical signals; the power supply and control unit 3 supplies power to the optical routing unit 4, the optoelectronic processing unit 1, and the radio frequency routing unit 2, and controls the switch in the optical routing unit 4 and the radio frequency switch component in the radio frequency routing unit 2 to select the on / off of the channel;

[0068] The optical routing unit 4 receives m multiplexed optical signals and m*n single optical signals, and realizes the output exchange between any one multiplexed optical signal and any one single optical signal;

[0069] The optoelectronic processing unit 1 converts the multiplexed optical signal output by the optical routing unit 4 into multiple single-channel optical signals, converts the multiple single-channel optical signals and the single-channel optical signal directly output by the optical routing unit 4 into radio frequency electrical signals, and transmits them to the radio frequency routing unit 2;

[0070] The radio frequency routing unit 2 switches and selects the multiple radio frequency electrical signals output by the optoelectronic processing unit 1 into a single radio frequency electrical signal, and then combines all the single radio frequency electrical signals into one radio frequency electrical signal for output.

[0071] For ease of understanding, this application also provides a more specific embodiment:

[0072] See also Figure 2 The +5V DC power input from the power and control interface is filtered and transformed before supplying power to each unit. The input serial control commands are converted into TTL-level signals by the control processing board to control the optical routing unit and RF switch components. The optical routing unit uses two 3×3 optical routers to establish channel paths based on demand. It reconstructs and outputs a combination of two groups of multiplexed light and single-channel light from the rectangular fiber optic connector input. Each group contains one multiplexed RF light channel (with two optical wavelengths) and two single-channel RF light channels, enabling reconstruction from any input to output channel. Figure 3 Taking port 1 as an example, with multiplexed optical input and ports 2 and 3 as single optical inputs, input ports 1, 2, and 3 can be interchanged arbitrarily. Each output multiplexed RF optical signal (port 4) is then connected to an optical wavelength division multiplexer (WDM) and demultiplexed into two single-channel RF optical signals. These signals, along with the single-channel RF optical signals from ports 5 and 6 of the optical router, are fed into an optoelectronic converter and converted into RF signals. This requires two 1-to-2 WDMs and two 4-channel optoelectronic converters. The control processing board controls the RF switch assembly to select and reconstruct the multiple RF signals from the optoelectronic converters. The outputs of the two 4-to-1 RF switch assemblies are then combined into an RF combiner for transmission to a common SMA port outside the device. When an output is required for a particular input channel, the corresponding RF switch is opened and the RF switches for the remaining channels are closed, thereby reconfiguring the output channel and reducing the number of output interfaces. Combined with a high-speed automatic control system, this significantly improves the efficiency of signal utilization and testing.

[0073] This application can be used in application scenarios with any input definition, any number of multiplexed RF light and single-channel RF light receiving requirements. Figure 2 As shown, the problems of versatility, scalability and efficiency of multi-channel RF optical receiving devices are innovatively solved.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present application can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present application should be included in the scope of protection of the claims of the present application.

Claims

1. A radio frequency optical receiving device with reconfigurable channels, characterized in that: The system comprises a housing, inside which are disposed an optical routing unit, an optoelectronic processing unit, an RF routing unit, and a power supply and control unit. The housing is provided with a rectangular optical fiber connector for inputting m-channel multiplexed optical signals and m*n-channel single-channel optical signals. The power supply and control unit is used to supply power to the optical routing unit, the optoelectronic processing unit, and the RF routing unit, and to control the switch in the optical routing unit and the RF switch component in the RF routing unit to select on and off channels. The optical routing unit is used to access m-channel multiplexed optical signals and m*n-channel single-channel optical signals, and realize the output exchange between any one-channel multiplexed optical signal and any one-channel single-channel optical signal; The optoelectronic processing unit is used to convert the multiplexed optical signal output by the optical routing unit into multiple single-channel optical signals, convert the multiple single-channel optical signals and the single-channel optical signal directly output by the optical routing unit into radio frequency electrical signals, and transmit them to the radio frequency routing unit; The RF routing unit is used to switch the multi-channel RF electrical signals output by the optoelectronic processing unit into a single-channel RF electrical signal, and then combine all the single-channel RF electrical signals into one RF electrical signal for output.

2. The channel reconfigurable radio frequency optical receiving device according to claim 1, characterized in that: The optical routing unit includes an optical cable assembly, multiple optical routings, and a power control board. Each optical routing unit includes a connection assembly, 2*(n+1) 2-to-1 optical switches, and 2 n-to-1 optical switches. The connection assembly connects rectangular optical fiber connectors to connect m multiplexed optical signals and m*n single optical signals to each optical routing unit. The optical switches are used to select the m multiplexed optical signals and m*n single optical signals. The power control board receives DC power and control signals from the power supply and control unit to switch the switches in the optical routing unit. By controlling different switch state combinations, any multiplexed optical signal can be output interchangeably with a single optical signal.

3. The channel-reconfigurable radio frequency optical receiving device according to claim 1, characterized in that: The optoelectronic processing unit includes a plurality of optical wavelength division multiplexers and a plurality of optoelectronic converters; the optical wavelength division multiplexers are connected to the optical routing unit and are used to convert the multiplexed optical signal output by the optical routing unit into a plurality of single-channel optical signals and send them to the optoelectronic converter; The optoelectronic converter is used to receive a single optical signal output by the optical wavelength division multiplexer and a single optical signal directly output by the optical routing unit, and convert all received optical signals into a corresponding number of independent radio frequency electrical signals and transmit them to the radio frequency routing unit.

4. The channel-reconfigurable radio frequency optical receiving device according to claim 1, characterized in that: The RF routing unit consists of an RF switch component and an RF combiner; the RF switch component is used to switch and select the multiple RF electrical signals output by the photoelectric converter into a single channel and then output it according to the control signal sent by the power supply and control unit; the RF combiner is used to combine the single-channel RF electrical signals output by all RF switch components into one RF electrical signal output.

5. The channel-reconfigurable radio frequency optical receiving device according to claim 1, characterized in that: The housing is also provided with a power supply and control interface; the power supply and control unit includes a power processing board and a control processing board; The power supply and control interface is used to receive DC voltage and input it into the power processing board in the optical routing unit; it is also used to receive serial control signals and input them into the control processing board; The power processing board is used to filter and transform the input DC voltage, and then use it as a DC power supply to supply power to the optical routing unit, optoelectronic processing unit, and RF routing unit. The control processing board is used to convert the received serial control signal into a TTL level signal, and then send the TTL level signal to the RF switch components in the optical routing unit and the RF routing unit to control the on / off selection of the channel.

6. The channel-reconfigurable radio frequency optical receiving device according to claim 1, characterized in that: A connector is also provided on the shell; the connector is used to receive a radio frequency electrical signal output by the radio frequency combiner in the radio frequency routing unit, thereby realizing single-port radio frequency output reconstruction.

7. The channel-reconfigurable radio frequency optical receiving device according to claim 1, characterized in that: The optical operating wavelength range of the optical routing unit shall not be less than the operating wavelength range of the optical signal input by the rectangular optical fiber connector; The number of output channels contained in each optical wavelength division multiplexer is not less than the number of required multiple wavelength signals contained in each multiplexed light input by the rectangular optical fiber connector; the optical operating wavelength range of the optical wavelength division multiplexer is not less than the optical signal operating wavelength range of the optical routing unit; The total number of photodetector chips contained in all optoelectronic converters shall not be less than the sum of the number of optical paths output by all optical wavelength division multiplexers and the number of single-channel optical signals input by the rectangular optical fiber connector, that is, j*q≥m*(r+n); the optical operating wavelength range of the optoelectronic converters shall not be less than the optical signal operating wavelength range of the optical wavelength division multiplexers and the optical routing unit; where j is the total number of optoelectronic converters, q is the number of photodetector chips contained in each optoelectronic converter, m is the total number of optical wavelength division multiplexers, r is the number of optical paths output by each optical wavelength division multiplexer, and n is the number of single-channel optical signals input by the rectangular optical fiber connector into each optical route.

8. The channel-reconfigurable radio frequency optical receiving device according to claim 1, characterized in that: The total number of input RF channels contained in all RF switch components is not less than the total number of output RF channels of the optoelectronic converters, that is, k*p≥j*q; the operating frequency range of the RF switch component is not less than the operating frequency range of the RF signal output by the optoelectronic converter; the cavity of the RF switch component is slotted to form a cavity wall according to the number of RF channels required for the RF electrical signal output by the optoelectronic converter, and is combined with an independent cover plate to perform single-channel separation to enhance the isolation between RF channels and prevent signal crosstalk; the RF channel is the channel inside the RF switch component; where k is the total number of RF switch components, p is the number of input RF channels contained in each RF switch component, j is the total number of optoelectronic converters, q is the RF channel output by each optoelectronic converter, and the RF channel output by each optoelectronic converter is equal to the number of photodetector chips contained in each optoelectronic converter; The number of input RF channels included in the RF combiner is not less than the sum of the number of RF switch components; the operating frequency range of the RF combiner is not less than the operating frequency range of the RF switch components; and the microwave printed circuit chip is equipped with an inter-channel phase consistency adjustment element.

9. The channel-reconfigurable radio frequency optical receiving device according to claim 1, characterized in that: The input adaptation voltage range of the power processing board shall not be less than the operating voltage range of the external power supply of the device input by the power supply and control interface; The power conversion circuit input adaptation voltage range of each power-consuming unit shall not be less than the operating voltage range output by the power processing board; each power-consuming unit includes an optical routing unit, a photoelectric processing unit and a radio frequency routing unit.

10. A channel-reconfigurable radio frequency optical receiving method, applicable to the channel-reconfigurable radio frequency optical receiving device according to any one of claims 1 to 9, characterized in that: include: The rectangular optical fiber connector inputs m-channel multiplexed optical signals and m*n-channel single-channel optical signals; The power supply and control unit supplies power to the optical routing unit, optoelectronic processing unit, and radio frequency routing unit, and controls the switches in the optical routing unit and the radio frequency switch components in the radio frequency routing unit to select the on / off of the channels; The optical routing unit receives m-channel multiplexed optical signals and m*n-channel single-channel optical signals, and realizes the output interchange between any one-channel multiplexed optical signal and any one-channel single-channel optical signal; The optoelectronic processing unit converts the multiplexed optical signal output by the optical routing unit into multiple single-channel optical signals, converts the multiple single-channel optical signals and the single-channel optical signal directly output by the optical routing unit into radio frequency electrical signals, and transmits them to the radio frequency routing unit; The radio frequency routing unit switches and selects the multiple radio frequency electrical signals output by the optoelectronic processing unit into a single radio frequency electrical signal, and then combines all the single radio frequency electrical signals into one radio frequency electrical signal for output.

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