100 results about "Sideband" patented technology

The application provides a sideband compensation acceleration method, an acceleration device, a computing device and a storage medium. The sideband compensation acceleration method comprises the following steps: obtaining sideband data; adaptively setting a candidate concurrency parameter and determining an optimal concurrency parameter P; dividing the sideband data into a plurality of vectors according to the determined optimal concurrency parameter P; performing parallelization calculation on each divided vector and judging whether each vector matches; and updating the sideband data according to the matching state of the plurality of vectors. Through the sideband compensation acceleration method of the application, sideband compensation data can be calculated in parallel based on an adaptive compensation algorithm, and the coding efficiency is improved.

1. The name of the design product: track (single sideband arc height track). 2. The use of the design product: used as a honeycomb curtain installation accessory. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

This invention discloses a method and system for measuring the frequency response of an electro-optic modulator based on a spectral analyzer. The system includes a laser, a 95:5 single-mode fiber splitter, an optical power meter, an electro-optic modulator, a control power supply, an RF signal generator, and a spectral analyzer. The measurement method includes the following steps: calculating a calibration factor to correct optical power drift through optical path splitting, driving the modulator by applying several discrete single-frequency RF points, and measuring the carrier power P0(f) using the spectral analyzer. i ) and the first-order sideband power P1(f i ), and determined by the power ratio R(f) i )=10 (P1‑P0) / 10 Combining the Jacobi–Anger expansion / Bessel function relation, the phase modulation index β(f) is solved by inverse solution. i Then, the phase transfer function H(f) at each frequency point is calculated and fitted. i The continuous frequency response S of the modulator is obtained. 21 This invention simplifies the testing process, reduces reliance on high-speed photodetectors and vector network analyzers, and enables high-precision electro-optic response testing of electro-optic modulators at high frequencies.

This invention discloses a simple, multifunctional, integrated 5G analog fronthaul in-band full-duplex communication method for remote units (RUs). This method primarily relates to the fields of optical communication technology and microwave technology. The system structure of the method, as shown in Figure 1 of the specification, includes a laser, downlink vector signal, electrical local oscillator signal, downlink interference signal, target signal, reference signal, 90° electrical coupler, dual-polarization quadrature phase-shift keying modulator, phase modulator, single-mode fiber, optical coupler, polarization beamsplitter, polarization beam combiner, polarization controller, polarizer, and photodetector. The remote unit (RU) uses a single phase (PM) modulator to achieve self-interference cancellation (SIC) combined with anti-fiber dispersion transmission and down-conversion, eliminating the need for bias control and additional local oscillator (LO) branches, resulting in a simple structure. At the central office (CO), the carried downlink signal and local oscillator signal are single-sideband modulated to achieve anti-fiber dispersion transmission. The RU uses wavelength reuse technology to perform PM cascaded down-conversion on the signal received from the uplink, and the SIC is moved from the RU to the CO to simplify the RU. The entire link has no optical filter and is reconfigurable.

This utility model relates to the technical field of sheet metal processing equipment, and provides a hot air system and its sealing device based on an edge-sealing tape with an adhesive layer. The system includes an air supply structure; a heating structure including a spiral pipe component, wherein the air inlet end of the spiral pipe component is connected to the air outlet end of the air supply structure, and each of the air inlet and outlet ends of the spiral pipe component is provided with a set of electrical terminals; and a power supply structure, wherein the positive and negative connection ends of the power supply structure are respectively connected to the two sets of electrical terminals to form a heating path. This utility model heats the air supplied by the fan through the spiral pipe component, solving the technical problems of low heating efficiency and large temperature fluctuations in hot air output caused by the multi-chamber structure of existing hot air systems, resulting in poor melting of the adhesive layer.

The application relates to a compressor valve piece fault monitoring method and device, which is applied to the technical field of compressor intelligent operation and maintenance and fault diagnosis, and comprises the following steps: collecting a compressor exhaust pressure pulsation signal, a motor three-phase current signal and a compressor shell vibration signal; performing feature extraction on the compressor exhaust pressure pulsation signal to obtain a modulation sideband amplitude value ratio in an envelope spectrum with a compressor real-time operation frequency as the center; performing feature extraction on the motor three-phase current signal to obtain a current total harmonic distortion rate; performing feature extraction on the compressor shell vibration signal to obtain a preset frequency band root mean square value; performing graded fault judgment according to the modulation sideband amplitude value ratio, the current total harmonic distortion rate, the preset frequency band root mean square value and judgment logic to determine a fault judgment result; and performing graded early warning based on the fault judgment result. The application has the effect of timely and accurate identification of early compressor valve piece faults.

To provide a measuring device that can measure the characteristics of a coherent receiver separately from the characteristics of a transmitter, without the need to measure the characteristics of the transmitter in advance. [Solution] The measuring device according to the present disclosure comprises: a conversion unit that converts a single-sideband signal affected by the transmission characteristics of a transmitter into a first electrical signal; a receiving unit that coherently receives the single-sideband signal; and a measuring unit that uses a second electrical signal generated by coherently receiving the first electrical signal to determine the transmission characteristics and the receiving characteristics of the receiving unit.

A security framework for redundancy configuration management ensures that multiplexer control data and redundancy maps distributed to compute modules are authenticated, verified, and securely applied. Configuration packets are cryptographically signed, versioned, and transmitted through an isolated sideband channel. A coordination processor verifies signatures, checks integrity hashes, prevents replay, and applies updates only during redundancy-safe intervals. Logs of verified configurations are stored in secure memory and may be audited through a hierarchical management structure. The invention prevents unauthorized or corrupted redundancy configurations in multi-module compute systems.

The application relates to the technical field of optical measurement, in particular to a kind of anti-phase double sideband ultra-stable cavity locking wide tuning method.The method comprises the following steps: obtaining a target laser beam emitted by a target laser;after the target laser beam is input into a first modulator, a first intermediate laser beam is obtained;after the first intermediate laser beam is input into a second modulator, a second intermediate laser beam is obtained;after the second intermediate laser beam is input into a PDH optical path, a key laser beam is obtained;after the key laser beam is input into a target FP cavity, an actual frequency difference is obtained, and adjustment is carried out according to the actual frequency difference;it can be known that, compared with the prior art, by tuning the ultra-stable reference benchmark itself, and using sideband locking technology to let the target laser serve as a "driven device" to track the moving benchmark in real time, wide tuning in a large range can be achieved while maintaining and high stability, and the contradiction between stability and wide tuning is solved.

Methods and apparatuses for providing a signal sideband signal via one or more switching method or apparatus. Pulse width modulation is utilized and high efficiency of amplification is provided via a switch mode amplifier. DC restoration may provide for improved carrier suppression. Also subtraction of complementary pulse width modulated signals provides for a multiplier circuit or a multiplier function. A nonlinear carrier signal coupled to a pulsewidth modulator provides for improved amplitude modulation linearity and / or reduced sideband distortion.

This invention belongs to the field of satellite navigation signal multiplexing technology, and discloses a method, transmitter, receiver, and system for multiplexing adjacent multi-frequency satellite navigation signals. This invention provides a specific implementation method and system for adjacent multi-frequency satellite navigation signal multiplexing technology, enabling the multiplexing of multiple navigation or communication signals at the middle frequency, both sides of the middle frequency, or the upper and lower sidebands of the middle frequency, solving the current problem of no multiplexing of adjacent multi-frequency satellite navigation or communication signals in the BeiDou system. It can be widely applied in satellite navigation systems, various ranging systems, communication systems, broadcasting systems, and control systems.

A signal processing method and apparatus, and a terminal device, a computer-readable storage medium, a computer program product and a chip system. The signal processing method comprises: determining a frequency band corresponding to the maximum frequency band energy within a frequency range for searching for a synchronization signal, and sideband energy corresponding to the frequency band; on the basis of the maximum frequency band energy and the sideband energy corresponding to the frequency band, determining whether the frequency band has spectrum characteristics of the synchronization signal; and in response to the frequency band having the spectrum characteristics of the synchronization signal, determining that the synchronization signal in the frequency band is a valid synchronization signal. The terminal device of the present application can determine the valid synchronization signal by using the spectrum characteristics of the synchronization signal, thereby facilitating a reduction in the missed detection rate of the synchronization signal and improving the efficiency of initial cell synchronization.

The application discloses a kind of sideband signal communication configuration circuit for on-chip network mounting IP, belong to chip design field, comprising: low-speed protocol communication configuration interface module, AXB sideband communication interface module, on-chip network module.First, the request of reading and writing sideband signal register based on low-speed protocol of external equipment is received, protocol is converted into the request package of on-chip network form, is sent to each routing node by on-chip network module, then utilizes protocol decoding bypass mainband communication interface, enters the AXB sideband communication interface module of current node, connects the configuration bus of IP, controls the reading and writing request of IP sideband signal register, then when reading and writing request succeeds, original road returns reading and writing response to external equipment.The application can effectively improve the wiring congestion of large scale on-chip network, timing bottleneck, increase the bandwidth of data path and configuration path, reduce kernel address occupation, while also beneficial to the rapid expansion integration of on-chip network.

This communication device serving as an aggregation station comprises: a signal processing unit that generates a main signal and a control signal; and a subcarrier multiplexing unit that arranges the main signal and the control signal in each of a first sideband and a second sideband with a carrier frequency as a reference, and generates an intensity-modulated optical signal including the control signal having opposite phases in the first sideband and the second sideband. This communication device serving as an extension station comprises: a photoelectric converter that converts, into an electrical signal, an intensity-modulated optical signal based on a main signal and a control signal arranged at the same frequency; a first filter that generates the main signal by passing, among the converted electrical signals, an electrical signal of a first frequency; a second filter that passes, among the converted electrical signals, an electrical signal of a second frequency; and a control signal generation unit that generates the control signal on the basis of the electrical signal of the first frequency and the electrical signal of the second frequency.

A multilayer thin film radiation refrigeration device based on photonic crystal sideband relates to a radiation refrigeration device. The multilayer thin film is sequentially provided with an impedance matching layer, a high-loss metal titanium layer, a one-dimensional photonic crystal, a phase compensation layer, a uniform optical thick reflective film and a supporting substrate layer from top to bottom; the one-dimensional photonic crystal is composed of infrared transparent dielectric materials with high and low refractive indexes; the sideband of the photonic crystal is used to realize wideband wide-angle high reflection, the high-loss metal titanium layer and the impedance matching layer are used to excite wideband response and improve the absorption rate, the phase compensation layer is used to control the change of the propagation phase, the wideband wide-angle absorption characteristics of the atmospheric transparent window are formed, and the passive radiation refrigeration function is realized. Compared with others, the present application can be made in a large area without photolithography, and has high radiation refrigeration power.

The application relates to a kind of optical and millimeter wave fusion bidirectional transmission system and method based on optical heterodyne, and belongs to the technical field of space optical communication.The application generates single sideband optical signal by means of optical heterodyne method, provides single sideband light source with carrier for space optical link and millimeter wave link, realizes multiplexing of relevant devices between the transmitting end of two links, between the receiving end and between the receiving end of space optical link and the transmitting end of millimeter wave link, and reduces the structural complexity of fusion bidirectional system.The transmission system can be divided into isomorphic bidirectional transmission mode and heterogeneous bidirectional transmission mode.In isomorphic bidirectional transmission mode, photodetector is time division multiplexed by space optical link and millimeter wave link.In heterogeneous bidirectional transmission mode, two light signals sharing photodetector completely overlap in frequency domain, and the decomposition of two signals is realized by prior information method.The application reduces the structural complexity of system by device multiplexing design, and promotes the development of fusion transmission in space-based and air-based network.

The embodiment of the application relates to the technical field of filter design, and discloses a straight-line topology structure with phase compensation characteristics, design and a superconducting filter. The topology structure is based on a standard straight-line topology structure comprising a source suspension branch, a straight-line coupling main path and a load suspension branch. Four continuous resonators are selected on the straight-line coupling main path. A first resonator and a fourth resonator of the four continuous resonators are cross-coupled to form the straight-line topology structure with the phase compensation characteristics. The four continuous resonators form a CQ structure. Therefore, under the condition of fully utilizing the simplicity of the straight-line topology structure, the introduction, independent control and adjustment of the phase compensation real zero point are realized, the group delay in the passband of the filter is compensated while the sideband suppression capability is improved, and therefore the signal fidelity of a communication system is improved.

The application provides a noise equalization method and device for a high-order modulation double offset continuous spectrum NFDM system, and belongs to the technical field of optical fiber communication. The method comprises the following steps: generating a distribution probability corresponding to a high-order modulation format constellation point by using an MB distribution at a transmitting end, and generating a PS symbol according to the distribution probability; modulating the PS symbol to a scattering coefficient to generate a time domain signal, and transmitting the time domain signal into an optical fiber after electro-optical conversion; recovering the PS symbol by using a receiving end in a DSP sequence opposite to that of the transmitting end, reorganizing the sequence order of the PS symbol, and obtaining input features of a c-ANN; taking ideal symbols of the transmitting end and the reorganized c-ANN input features of the receiving end as labels and input data of a c-ANN network, obtaining equalized data, and realizing suppression and equalization of ASE noise and processing noise. The application can effectively equalize noise and improve system performance.

This invention discloses a method for generating coherent broadband frequency-stepped microwave signals. The method involves electro-optically modulating an optical carrier with a microwave signal to generate a double-sideband optical signal containing only an upper sideband and a lower sideband. A dual-passband optical filter separates the upper and lower sideband signals. These signals are then frequency-shifted in opposite directions and subjected to the same delay before being fed back into the dual-passband optical filter, forming a bidirectional frequency-shifting loop. The gain of the bidirectional frequency-shifting loop is set to 1, and the coupled signals of the two frequency-shifted signals output from the loop are photoelectrically converted to generate a coherent broadband frequency-stepped microwave signal. This invention also discloses a coherent broadband frequency-stepped microwave signal generation device. Compared to existing technologies, this invention eliminates the influence of optical carrier phase noise, effectively enhances signal stability and coherence, and increases the bandwidth of the generated signal.

This invention provides a sensitivity-enhanced temperature measurement device based on an optoelectronic oscillator, comprising: a laser, an intensity modulator, a delay line interferometer, a sensitive arm fiber optic unit located in the space where the signal to be measured is located, a reference arm fiber optic unit, a photodetector, a microwave amplifier, a bandpass filter, a power divider, and a frequency measurement section. The intensity modulator generates an optical signal containing two frequency components: a carrier wave f0 and a first-order single-sideband wave f1. The delay line interferometer then separates these two frequency components, allowing them to propagate separately along the reference arm and sensitive arm fibers. These components are then returned to the delay line interferometer and combined to output an optical signal whose phase contains the temperature signal to be measured. The phase change of the optical signal caused by the temperature signal to be measured is then converted into a frequency change in the microwave signal output by the optoelectronic oscillator. This invention also provides a sensitivity-enhanced temperature measurement method. The device provided by this invention can effectively improve the sensitivity of temperature detection.

Optical intensity modulation apparatus including: an optical modulator operative to modulate a continuous-wave optical carrier signal at a carrier wavelength to generate at least one sideband on the optical carrier signal; a radio frequency, RF, signal generator operative to provide an RF drive signal to the optical modulator; a first optical waveguide grating having a central reflection wavelength corresponding to a sideband; and optical circulator configured to direct the optical carrier signal and the at least one sideband to the first optical waveguide grating and to direct a reflected optical signal from the first optical waveguide grating towards an output to form an output optical signal. The RF signal generator is operative to switch the drive signal on and off so as to form an intensity modulated output optical signal.

The invention provides an optical microcavity dispersion measurement method based on dispersion linetype real-time calibration, which is applied to the technical field of microcavity dispersion measurement, and comprises the following steps: converting the position extraction of an optical sideband into the position extraction of a dispersion linetype, and demodulating the optical sideband through a frequency mixer to obtain a sideband harmonic peak of a specific dispersion linetype; adjusting the phase difference between a modulation signal and a demodulation signal of the high-stability radio frequency source, identifying the position of a dispersion line type sideband harmonic peak, and extracting the frequency interval of the sideband harmonic peaks on the two sides of each resonance mode; dynamically calibrating the optical fiber Mach-Zehnder interferometer based on the number of sinusoidal signal cycles in the frequency interval of the dispersion line type sideband resonance peaks on the two sides of each resonance mode to obtain a calibrated Mach-Zehnder interferometer; and generating a dispersion measurement result of the optical microcavity according to the calibrated Mach-Zehnder interferometer interference signal. According to the invention, the dispersion measurement precision and the automation level can be improved.

The utility model relates to the technical field of furniture production, concretely is a kind of edge banding machine for furniture production, including work bench, the top of work bench is equipped with edge bander, two press and paste wheel, glue feeder, rotary feeding shaft and discharge tray, the front of edge bander is equipped with grinding assembly of work bench, the top of work bench is equipped with transmission assembly for let rotary feeding shaft drive grinding assembly operation, the lower of grinding assembly is equipped with large capacity collecting box of work bench, collecting box is equipped with quick-release structure.Automatic operation is realized, and the work efficiency is improved.

This invention discloses a server PCIe resource adaptive configuration method, relating to the fields of server architecture and PCIe high-speed bus configuration technology. Addressing the problems of existing solutions such as reliance on custom BIOS development, timing incompatibility, lack of resource arbitration, inability to dynamically optimize, and operational redundancy, this invention adopts a fully hardware-coordinated architecture of the motherboard and component-side CPLD. It completes time-division reporting of topology data and four-level hardware trusted verification through the native sideband channel of the UBC cable. Through hardware-based resource conflict arbitration and cross-CPU platform register conversion, the configuration table is generated and locked before BIOS PCIe initialization. Simultaneously, it supports OS runtime load monitoring, incremental bandwidth adjustment, and hot-swappable adaptive configuration, combined with parallel cable status alarms and automatic fault rollback mechanisms. This invention eliminates reliance on custom BIOS, is compatible with standard power-on timings, improves configuration stability and resource utilization in complex scenarios, reduces hardware redundancy and operational costs, and is applicable to general server PCIe resource adaptive management.

An intelligent cable for backplane storage management is provided. The cable can include a microcontroller, a power regulation circuit to adjust an input voltage from a power source and provide an output voltage to the microcontroller, a storage device coupled to the microcontroller, a first end portion to be coupled to one or more storage devices, and a second end portion to be coupled to a storage controller. The microcontroller can receive a sideband signal from the one or more storage drives and can transmit connection topology information to the storage controller based at least in part on the sideband signal.

The utility model discloses a kind of string light warning devices, comprising: warning band, the warning is composed of two edge bands movably connected together, and a plurality of through holes are provided on one of the edge bands along the axial direction of the edge band, and the two edge bands are repeatedly closable and openable;String light, which is wrapped in the warning band by the two edge bands, comprises a wire and a plurality of lamp beads arranged on the wire and corresponding embedded in the through holes;Winding mechanism for winding the warning band;And power supply component, connected with the wire, for powering on the string light. The string light is arranged on the warning band, and is suitable for daytime when the string light is not on, and is suitable for night when the string light is on;The warning band is composed of two edge bands that can be repeatedly closed and opened, the string light can be wrapped in the two edge bands, or the two edge bands can be disassembled, to facilitate the maintenance and replacement of the string light;The winding mechanism can wind the warning band, and facilitate collection and carrying.

A system for radio frequency (RF) residual sideband (RSB) calibration includes a complex (in phase / quadrature (I / Q)) signal receiver, a signal generator configured to generate a transmit (Tx) signal, a first phase shifter operably coupled to the real signal transmitter, a first signal combiner configured to combine a receive (Rx) signal with the transmit (Tx) signal to generate a first combined signal, a second phase shifter configured to provide a selected phase shift to the first combined signal, and a complex downconverter configured to generate an in phase Rx signal and a quadrature Rx signal alternatively using an in phase LO signal and a quadrature LO signal to generate one or more signals indicative of relative Tx-Rx LO phase (θ), amplitude (A), Tx LO I / Q phase mismatch (ε), Rx I / Q amplitude mismatch (α), and Rx I / Q phase mismatch (φ) at the output of the complex receiver.

The present disclosure relates to a device and a communication method with which it is possible to perform appropriate filtering / image suppression when single side band modulation is used for D2R transmission of an A-IoT device. A device that has a lower complexity than an NB-IoT device comprises: a transmission unit that transmits to a wireless base station by using single side band modulation; and a control unit that selects either an upper side band or a lower side band in the single side band modulation, and uses the selected side band to perform transmission control of a transmission signal to the wireless base station.