A multi-channel optoelectronic transceiver assembly for ultra-high frequency radio frequency interfaces

Abstract

The application discloses a kind of ultra-high frequency multichannel photoelectric transceiver components of adaptable multi-class radio frequency interface, belong to ultra-high frequency microwave millimeter wave photoelectric integration and multichannel radio frequency signal long-distance transmission technical field.The component is by multichannel ultra-high frequency radio frequency photoelectric emission module, multi-core long-distance optical fiber jumper and multichannel ultra-high frequency photoelectric radio frequency receiving module three independent parts interconnection composition.Transmission and receiving module inside all use multichannel partition isolation layout, each channel independently configures signal conditioning, electro-optical / optical-electric conversion and shaping compensation unit;Module external radio frequency interface can flexibly select and match SMA, K type, 2.4mm and multiple standardized high-frequency connectors.The application working bandwidth covers DC-145GHz, is transmitted by independent optical path physical isolation, can realize several tens of meters to several hundred meters ultra-long distance, high isolation, low distortion multichannel ultra-high frequency radio frequency signal synchronous transmission, solves the problem, such as traditional equipment interface single, bandwidth limited, network rigidification, has the advantages, such as network flexible, strong universality, transmission performance is excellent.

Description

Technical Field

[0001] This invention belongs to the field of ultra-high frequency microwave millimeter wave optoelectronic integration and multi-channel radio frequency signal long-distance transmission technology. Specifically, it relates to a split interconnected multi-channel radio frequency optoelectronic transceiver assembly, which is suitable for ultra-high frequency radio frequency test systems of 145GHz and below, distributed microwave networking, airborne and shipborne multi-channel radio frequency transmission, high-density array radio frequency measurement and control, long-distance radio frequency signal isolation transmission and other scenarios. Background Technology

[0002] Current microwave and millimeter-wave ultra-high frequency radio frequency systems are gradually developing towards multi-channel array integration, long-distance distributed networking, and high-isolation anti-interference transmission. In fields such as radio frequency testing, wireless communication, radar detection, and airborne and shipborne telemetry and control, single-channel optoelectronic conversion devices can no longer meet the engineering requirements of multi-channel parallel signal transmission and arrayed synchronous transceiver.

[0003] Current mainstream RF optoelectronic transmission solutions are mostly single-channel integrated transceiver modules, supporting only a single RF interface and short-distance signal transmission. They suffer from limitations such as a fixed number of channels, limited interface compatibility, and poor network scalability. For ultra-high frequency (UHF) RF signal transmission up to 145GHz, traditional coaxial cables suffer from extremely high skin loss and dielectric dispersion loss, limiting transmission distances to only a few meters. Over long distances, power attenuation, phase distortion, and crosstalk distortion are severe, and they lack electrical isolation, failing to meet the requirements for high-isolation multi-channel long-distance transmission. Existing multi-channel optoelectronic transceivers often employ an integrated structure with fixed RF interface models, only compatible with single interfaces such as SMA, and incompatible with high-frequency interfaces such as K-type, 2.4mm, 3.5mm, and 1.85mm. Furthermore, their optoelectronic transmitting, transmitting, and receiving units are fixed as a single unit, making disassembly for maintenance and flexible networking impossible, resulting in high maintenance costs. In addition, existing components are mostly designed for low frequencies, and their circuit bandwidth and optical coupling structures are ill-suited to the linear modulation and demodulation requirements of 145GHz UHF signals, leading to high conversion distortion rates and poor channel consistency.

[0004] Therefore, the industry urgently needs a multi-channel RF optoelectronic transceiver solution that is independently interconnected, has compatible and adaptable interfaces, supports 145GHz ultra-high frequency, and can transmit over long distances, in order to meet the core requirements of universal adaptation of multiple interfaces, parallel isolation transmission of multiple channels, long-distance networking at the hundred-meter level, and high-fidelity conversion of ultra-high frequency signals. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an ultra-high frequency multi-channel optoelectronic transceiver component that can be adapted to multiple types of radio frequency interfaces. This component adopts a three-segment independent interconnected architecture consisting of a "transmitter module + fiber optic patch cord + receiver module," which can flexibly adapt to various high-frequency radio frequency interfaces. It supports parallel optoelectronic conversion of up to 145GHz ultra-high frequency multi-channel radio frequency signals and low-distortion transmission over ultra-long distances of tens to hundreds of meters, solving the problems of rigid networking, limited interfaces, and poor ultra-high frequency transmission performance in traditional equipment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an ultra-high frequency multi-channel optoelectronic transceiver component adaptable to multiple types of radio frequency interfaces, consisting of three independent modular components interconnected together: a multi-channel ultra-high frequency radio frequency optoelectronic transmitting module, a multi-core long-distance fiber optic patch cord, and a multi-channel ultra-high frequency optoelectronic radio frequency receiving module. The three components are independently and separately configured, interconnected and work collaboratively, without a fixed integrated structure, allowing for independent assembly and disassembly, flexible networking, and individual maintenance and replacement.

[0007] The multi-channel ultra-high frequency radio frequency optoelectronic transmitter module features an independent, sealed, modular structure with a multi-channel, partitioned, isolated integrated layout. The left end of the module houses a multi-channel adaptable RF interface array. Each interface can be flexibly equipped with SMA, K-type, 2.4mm, 3.5mm, 1.85mm, or 0.8mm high-frequency RF connectors depending on the application. Each interface is independently partitioned and features independent impedance matching for each channel. The right end of the module contains a multi-core fiber optic output interface array corresponding to the number of channels. Inside the transmitter module, each channel is independently configured with an ultra-wideband high-frequency signal fine conditioning unit and an ultra-high frequency electro-optic conversion chip. This allows for independent impedance calibration, out-of-band clutter filtering, phase compensation, and linear electro-optic modulation, converting each RF electrical signal into an independent optical carrier signal. This achieves parallel, isolated, and low-distortion electro-optic signal conversion and output across multiple channels.

[0008] Multi-core long-distance fiber optic patch cords are independent transmission components, employing a multi-core parallel low-loss fiber structure with a one-to-one match between the number of cores and channels. The patch cords use ultra-low-loss silica fiber, supporting stable transmission over ultra-long distances from tens to hundreds of meters, without high-frequency dispersion or amplitude / phase distortion. Both ends of the patch cord are equipped with standardized multi-channel fiber optic connectors, precisely aligned and locked to the corresponding interfaces of the transmitting and receiving modules, achieving synchronous low-loss interconnection of multiple optical signals.

[0009] The multi-channel UHF optoelectronic RF receiver module features an independent, sealed, modular structure, symmetrically matched with the transmitter module. The left end of the module houses a multi-core fiber optic input interface array, while the right end features a multi-channel RF output interface array adaptable to various specifications. Internally, the receiver module also employs a multi-channel partitioned and isolated layout. Each channel independently carries an UHF high-linearity optoelectronic demodulation chip and a post-mounted dynamic signal shaping and compensation unit. This allows for high-precision demodulation of weak optical carrier signals after long-distance transmission, coupled with dynamic gain compensation, waveform restoration, phase calibration, and noise purification processing to accurately reconstruct the original UHF RF electrical signal, which is then output losslessly through the RF interface array.

[0010] Both the transmitting and receiving modules adopt an all-metal sealed cavity and a single-channel independent shielding isolation design, coupled with low-ripple independent power supply, to ensure the consistency and stability of multi-channel signal parallel conversion, transmission and restoration.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. The unique three-segment split interconnection architecture allows the three major components to be independently detachable, replaceable, and flexibly networked, completely solving the pain points of rigid networking and overall replacement in traditional integrated equipment, and significantly reducing operation and maintenance and upgrade costs. 2. With a working bandwidth covering DC-145GHz, it can fully adapt to the linear photoelectric conversion and long-distance transmission of microwave and millimeter-wave ultra-high frequency multi-channel radio frequency signals, filling the technological gap of multi-channel ultra-high frequency photoelectric transceiver components. 3. The RF interfaces at both the transceiver ends can be flexibly selected with a full range of high-frequency interfaces such as SMA, K-type, 2.4mm, 3.5mm, 1.85mm, and 0.8mm, greatly enhancing the equipment's versatility and adaptability to various scenarios. 4. Adopting a partitioned isolation design with a single-channel independent optical path, independent circuit, and independent shielding, there is no crosstalk or coupling interference when multiple channels transmit signals in parallel, achieving high-fidelity and high-consistency synchronous transmission over ultra-long distances of tens to hundreds of meters. 5. The modular all-metal shielded cavity and multi-channel isolation protection structure have excellent anti-electromagnetic interference, anti-vibration and environmental resistance performance, and can work stably for a long time in harsh conditions such as airborne and shipborne applications. It has a high degree of integration and engineering practicality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall three-segment split interconnected assembly structure of the present invention.

[0013] Figure 2 This is a schematic diagram of the internal isolation layout structure of the multi-channel transmission module of the present invention.

[0014] Figure 3 This is a block diagram illustrating the internal signal processing principle of the multi-channel receiving module of the present invention.

[0015] Figure 4 This is a flowchart illustrating the complete optoelectronic transmission process of the multi-channel ultra-high frequency signal in this invention. Detailed Implementation

[0016] The following, in conjunction with the accompanying drawings, provides a complete and clear description of the split architecture, interface adaptation principle, multi-channel isolated transmission process, and ultra-high frequency operating characteristics of the present invention using preferred embodiments. This embodiment covers a working bandwidth of DC-145GHz, supports modular expansion with 4, 8, 16 channels, and more specifications, and offers flexible selection of K-type and 2.4mm high-frequency interfaces for the radio frequency interface. The fiber optic patch cord length can be adapted to long-distance scenarios such as 50 meters, 100 meters, and 300 meters, making it suitable for demanding conditions such as ultra-high frequency radio frequency array testing, distributed millimeter-wave communication, airborne multi-channel radio frequency networking, and shipborne long-distance radio frequency signal transmission.

[0017] The specific assembly and collaboration workflow is as follows: 1. Modular assembly and docking. Based on the interface standard of the on-site RF equipment, select and assemble corresponding multi-channel RF interfaces to the left end of the transmitting module and the right end of the receiving module; based on the actual transmission distance, select corresponding length multi-core low-loss fiber optic patch cords. Precisely align and lock the two ends of the fiber optic patch cords to the fiber optic array interface on the right end of the transmitting module and the fiber optic array interface on the left end of the receiving module, completing the interconnection and assembly of the three independent components. Connect the low-voltage power supply to the transceiver module to complete the deployment of the entire assembly. 2. Multi-channel UHF signal photoelectric conversion and transmission. Multiple UHF RF signals (up to 145GHz) are connected to the corresponding multi-channel RF interface on the left side of the transmitter module. Each signal enters an independent isolation channel and undergoes link impedance matching through a dedicated UHF impedance calibration unit to eliminate UHF signal impedance abrupt loss. Subsequently, the signal is purified and high-frequency phase deviation is corrected through ultra-wideband bandpass filtering and phase compensation circuits. Finally, each RF electrical signal is linearly modulated into an optical carrier signal by an independent UHF electro-optical conversion chip. The optical signal of each channel is independently output to a multi-core fiber optic patch cord, realizing synchronous photoelectric conversion and transmission of multiple signals. 3. Long-distance, low-loss fiber optic isolated transmission. Multiple optical radio frequency signals are physically isolated and transmitted through independent cores of multi-core fiber optic patch cords, with each core and channel transmitting independently, completely eliminating electromagnetic crosstalk and signal coupling interference between channels. Utilizing the characteristics of ultra-low-loss fiber, signals transmit over distances from tens to hundreds of meters without ultra-high frequency dispersion distortion, significant amplitude attenuation, or phase shift, fully preserving the original waveform, amplitude, and frequency characteristics of each ultra-high frequency signal. 4. High-precision demodulation and restoration output of multi-channel optical signals. After long-distance transmission, multiple optical signals are synchronously input into the fiber optic array interface on the left side of the receiving module. Each channel signal independently enters its corresponding optoelectronic demodulation area, where it is precisely demodulated and restored to the original weak UHF RF signal by a high-linearity UHF optoelectronic chip. Subsequently, through the independent channel dynamic shaping and compensation unit, the long-distance transmission loss is adaptively compensated, minor waveform distortions are repaired, residual noise and electromagnetic clutter are filtered out, and phase calibration and amplitude normalization are completed. Finally, the multiple well-formed, high-fidelity, and highly consistent UHF RF signals are synchronously output to the back-end RF equipment through the multi-channel RF interface on the right side of the receiving module. 5. Stable operation under all working conditions. Each channel of the transceiver module is independently electromagnetically isolated and independently powered and regulated. The low-ripple power supply unit eliminates UHF signal distortion caused by voltage fluctuations and current surges. The all-metal sealed cavity structure resists strong external electromagnetic interference, vibration shocks and high and low temperature environmental changes, ensuring long-term synchronous and stable transmission of multi-channel UHF signals, with excellent signal consistency and repeatability of each channel.

[0018] Through actual testing and verification, the components in this embodiment can stably achieve parallel transmission of DC-145GHz ultra-high frequency multi-channel signals. Under the condition of long-distance transmission of 300 meters, the insertion loss of single-channel signals is low and the distortion rate is extremely small. The isolation between multiple channels is excellent and there is no obvious crosstalk. It can be flexibly adapted to multiple types of radio frequency interfaces. Its networking scalability and adaptability to operating conditions far exceed those of traditional integrated multi-channel optoelectronic equipment, and fully meets the engineering indicators of high precision, long distance, and multi-channel synchronous transmission of ultra-high frequency array radio frequency systems.

[0019] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A high-frequency multi-channel optoelectronic transceiver component adaptable to multiple types of radio frequency interfaces, characterized in that, include: The multi-channel ultra-high frequency radio frequency optoelectronic transmitter module (1) is an independent, sealed, modular structure. Its left end is equipped with a multi-channel adaptable radio frequency interface array, and its right end is equipped with a multi-core fiber optic output interface array. The transmitter module adopts a multi-channel partitioned isolation layout. Each channel is independently equipped with an ultra-wideband high-frequency signal conditioning unit and an ultra-high frequency electro-optic conversion chip, which are used to convert the input ultra-high frequency radio frequency electrical signal into an optical carrier signal and output it through the corresponding multi-core fiber optic output interface. The multi-core long-distance fiber optic patch cord (2) is an independent transmission component. It adopts a multi-core parallel fiber optic structure, and its fiber core count matches the channel count of the transmitting module (1). It is used to transmit multiple optical carrier signals independently and physically isolated. Both ends are equipped with standardized multi-channel fiber optic docking terminals that connect to the transmitting module (1) and the receiving module (3). The multi-channel ultra-high frequency optoelectronic radio frequency receiving module (3) is an independent, sealed, modular structure. It has a multi-core fiber optic input interface array on the left end and a multi-channel adaptable radio frequency output interface array on the right end. The receiving module (3) adopts a multi-channel partitioned isolation layout. Each channel is independently equipped with an ultra-high frequency high linear optoelectronic demodulation chip and a post-dynamic signal shaping and compensation unit, which are used to demodulate and restore the optical carrier signal to an ultra-high frequency radio frequency electrical signal and output it through the radio frequency output interface. The transmitting module (1), fiber optic patch cord (2) and receiving module (3) are set up separately and independently, and are detachably interconnected through the fiber optic docking terminal to form a multi-channel ultra-high frequency radio frequency signal photoelectric conversion, long-distance transmission and restoration output link.

2. The ultra-high frequency multi-channel optoelectronic transceiver component adaptable to multiple types of radio frequency interfaces according to claim 1, characterized in that, In the multi-channel adaptable RF interface array of the transmitting module (1) and the multi-channel adaptable RF output interface array of the receiving module (3), each RF interface can be interchangeably selected as any one or more of SMA, K-type, 2.4mm, 3.5mm, 1.85mm, and 0.8mm connectors.

3. The ultra-high frequency multi-channel optoelectronic transceiver component adaptable to multiple types of radio frequency interfaces according to claim 1, characterized in that, The component operates with a bandwidth ranging from DC to 145 GHz.

4. The ultra-high frequency multi-channel optoelectronic transceiver component adaptable to multiple types of radio frequency interfaces according to claim 1, characterized in that, The ultra-wideband high-frequency signal conditioning unit in the transmitting module (1) includes an impedance calibration unit, an ultra-wideband bandpass filter unit, and a phase compensation unit connected in sequence; the post-dynamic signal shaping and compensation unit in the receiving module (3) includes a dynamic gain compensation circuit, a waveform repair circuit, a phase calibration circuit, and a noise purification circuit.

5. The ultra-high frequency multi-channel optoelectronic transceiver component adaptable to multiple types of radio frequency interfaces according to claim 1, characterized in that, Both the transmitting module (1) and the receiving module (3) adopt an all-metal sealed cavity, and each internal channel is shielded to form a single-channel independent electromagnetic isolation, and is equipped with a low-ripple independent power supply unit.

6. The ultra-high frequency multi-channel optoelectronic transceiver component adaptable to multiple types of radio frequency interfaces according to claim 1, characterized in that, The multi-core long-distance fiber optic patch cord (2) uses ultra-low loss quartz fiber, and its length can be selected from tens of meters to hundreds of meters according to the transmission distance requirements.

7. The ultra-high frequency multi-channel optoelectronic transceiver component adaptable to multiple types of radio frequency interfaces according to claim 1, characterized in that, The component has 4, 8, or 16 channels and supports modular expansion.

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