45 results about "Channel spacing" patented technology

The invention provides an inter-channel crosstalk suppression method in a multi-channel optical module, which aims at the problems of inter-channel interference and signal overlapping caused by wavelength shift in the multi-channel optical module, calculates the wavelength shift by adopting a proportional integral differential control method through collecting the reading of a temperature sensor and the output wavelength data of a laser device in real time, and finally suppresses the crosstalk in the multi-channel optical module. The threshold value is dynamically adjusted in combination with the environment temperature change, and the interference risk index is quantified; the wavelength drift trend is extracted through time sequence analysis, the channel interval adjustment logic is optimized, the filter bank is dynamically configured to improve the signal purity, meanwhile, the wavelength parameter is corrected through the offset compensation value, and the stability is ensured. If the transmission quality requirement is met, configuration parameters are locked, a correction model is matched and optimized through historical data, potential risks are predicted in combination with state estimation filtering, and the logic adaptability is enhanced and adjusted. According to the invention, efficient correction of wavelength drift and interference minimization are finally realized, and the transmission quality and operation stability of the multi-channel optical module are improved.

The embodiment of the invention provides a communication method and related equipment. And the terminal equipment sends first indication information to the network equipment, the first indication information being used for indicating that the terminal equipment supports that a first long term evolution (LTE) carrier and a first new air interface (NR) carrier are discontinuous, and the first LTE carrier and the first NR carrier are two carriers in an in-band EN-DC. And the terminal equipment receives the configuration information sent by the network equipment, and accesses the network according to the first rule and the configuration information. Wherein the configuration information is used for configuring the first LTE carrier and the first NR carrier. The first rule comprises that the nominal channel interval is equal to the channel interval between the LTE carrier and the NR carrier in the in-band discontinuous EN-DC, and the nominal channel interval is the channel interval between the LTE carrier and the NR carrier which are adjacent in the in-band discontinuous EN-DC. Through the first rule, the terminal equipment which only reports discontinuous LTE carriers and discontinuous NR carriers supporting in-band EN-DC can access a network which only supports continuous LTE carriers and continuous NR carriers supporting in-band EN-DC.

The present invention discloses a method for generating a channel spectrum response difference correction table and a channel spacing correction table, a computer program, a computer readable storage medium and a computer tomography device. The method for generating a channel spectrum response difference correction table and a channel spacing correction table includes using parallel projection P paral (k, r) determines the channel position corresponding to the center of the phantom, and calculates the simulated parallel projection and the ideal projection P accordingly sim (k, r), and finally according to the projection difference diff(k, l, r) and the simulated ideal projection P sim (k, r), calculate the channel spectrum response difference correction table t CCR (k, l) and channel spacing correction table t spacing The method, computer program, computer-readable storage medium, and computer tomography device of the present invention for generating a channel spectrum response difference correction table and a channel spacing correction table are not affected by residual beam hardening and can effectively generate ideal projections.

The utility model provides an automatic frequency hopping image transmission communication system, which comprises at least one host and a plurality of slaves in wireless communication with the host, and the host and the slaves respectively comprise a frequency hopping communication circuit. The frequency hopping communication circuit is composed of a chip which supports the fastest 100 hops per second and is provided with 80 channels, the channel interval is 30 kHz, the self-correlation coefficient is 0.4, the mutual relation is 0.5, the frequency hopping sequence length is at least 80, and the synchronization time is three frames of 10 milliseconds. The host and the slave of the image transmission communication system adopt the chip supporting the frequency hopping technology for communication, single-frequency communication is not used any more, so that interference signals are difficult to aim at specific frequencies to interfere, the stability and the reliability of communication are improved, the chip supporting the frequency hopping technology can send and receive signals at different frequencies, and the communication efficiency is improved. And the influence of signal fading and multipath effect is effectively avoided.

A present disclosure provides a method for designing a microchannel using a channel gap optimal design algorithm and a fuel cell including a separator designed using the same. The fuel cell including the separator designed using the method for designing a microchannel using a channel gap optimal design algorithm can be designed by calculating an optimal channel gap through the algorithm, and through the designed optimal channel gap, temperature reduction of a fluid, temperature distribution, and flow distribution uniformity can be improved.

The invention provides an integratable wide spectrum dense channel WSS based on a liquid crystal spatial light modulator, and the method comprises the steps: taking an axial symmetry AWG array as an input port / output port of the WSS, carrying out the dispersion of an input WDM signal, and carrying out the wave combination of an output optical signal; the polarization control module is used for converting the WDM signal into two beams of linearly polarized light in a single polarization state; the grating is used for dispersing linearly polarized light in the WDM signal along the x direction; the lens group is used for realizing polarization multiplexing in an x-z plane, converting offset of different angles into off-axis displacement to realize angle-space displacement conversion, and controlling the spot size through a 1: 1 4f system in a y-z plane; the spatial light modulator is used for carrying out pure phase wavefront modulation on optical signals, so that light with different wavelengths deflects at different angles in the x direction and returns along the same path in the y direction, and the problem that it is difficult for a WSS of a liquid crystal spatial light modulator to simultaneously achieve a wide working frequency spectrum covering a communication waveband and ultra-dense channel intervals lower than 50 GHz is solved.

Techniques pertaining to designs of channelization of the 60 GHz band for next-generation wireless local area networks (WLANs) are described. A first apparatus communicates in a 60 GHz band wirelessly with a second apparatus by communicating with a channelization design of the 60 GHz band having a channel center frequency being equal to (a channel starting frequency+ΔF)+ΔF*channelIndex, with ΔF denoting a half of a channel spacing and with channelIndex denoting a channel index value.

The present invention provides a semiconductor device and a manufacturing method therefor. The method comprises: providing a substrate, and forming a drift region in the substrate; forming a plurality of channel spacing regions in the drift region, a gap being present between every two channel spacing regions to form a channel region; forming a source contact region, a drain contact region and a gate contact region in the drift region, and forming a substrate contact region in the substrate, the substrate contact region and the drift region being spaced apart from each other, wherein the gate contact region is located between the source contact region and the drain contact region, and the channel regions are connected to the source contact region and the drain contact region. According to the solution of the present invention, a plurality of channel spacing regions are formed, and a gap is present between every two channel spacing regions to form a channel region, so that the pinch-off voltage of devices can be adjusted by adjusting the width of the channel regions, and devices are also ensured to have sufficiently high conduction current when turned on, thereby further decreasing the conduction resistance of the devices, reducing the power consumption of the devices, and improving the performance of the devices.

Aspects of the disclosure are directed to a Bluetooth sounding channel (BCS) configuration that configures channels for sounding within bandwidth section(s) in accordance with a uniform inter-channel spacing. In an aspect, the uniform inter-channel spacing is an integer that is greater than or equal to 2. Such aspects may provide various technical advantages, such as providing reasonable ranging accuracy while also providing power savings, more efficient over-the-air (OTA) resource utilization and reduced ranging latency.

Embodiments of the present application provide a communication method and a related device. A terminal device sends first indication information to a network device, wherein the first indication information is used for indicating that the terminal device supports that a first long term evolution (LTE) carrier is non-contiguous with a first new radio (NR) carrier, and the first LTE carrier and the first NR carrier are two carriers in intra-band EN-DC. The terminal device receives configuration information sent by the network device, and accesses a network on the basis of a first rule and the configuration information, wherein the configuration information is used for configuring the first LTE carrier and the first NR carrier, and the first rule comprises: nominal channel spacing is equal to the channel spacing between an LTE carrier and an NR carrier in intra-band non-contiguous EN-DC, wherein the nominal channel spacing is the channel spacing between an LTE carrier and an NR carrier adjacent to each other in intra-band contiguous EN-DC. The first rule can enable a terminal device that reports the capability of only supporting that an LTE carrier and an NR carrier in intra-band EN-DC are non-contiguous can access a network that only supports that the LTE carrier and the NR carrier in the intra-band EN-DC are contiguous.

This application relates to the field of optical communication technology, specifically to a dense wavelength division multiplexing (DWDM) structure and optical chip, aiming to solve the technical problem of how to achieve a large-channel, low-crosstalk DWDM structure based on multiple coarse wavelength division multiplexers. To this end, the DWDM structure of this application includes: multiple sets of one-to-one corresponding micro-ring resonators and coarse wavelength division multiplexers, where the resonant wavelength of the micro-ring resonator includes the output wavelength of its corresponding coarse wavelength division multiplexer. Through the interleaving design of the output wavelengths of adjacent coarse wavelength division multiplexers, the channel spacing of the reduced coarse wavelength division multiplexers is achieved. Through the wavelength selection of the micro-ring resonators and the matching design between micro-ring resonators with different center resonant wavelengths and each coarse wavelength division multiplexer, the severe channel crosstalk problem caused by simply interleaving the coarse wavelength division multiplexers is reduced, thus forming a new large-channel, low-crosstalk DWDM structure, solving the problem of severe crosstalk in conventional large-channel DWDM designs.

The invention belongs to the technical field of optical fiber communication and optical devices, and provides an ultrahigh-channel-number orbital angular momentum mode converter utilizing a few-mode optical fiber hybrid structure aiming at the problem that an orbital angular momentum mode converter based on a spiral long-period optical fiber grating has certain limitation on the number of channels or the frequency band covered by the channels at present. The orbital angular momentum mode converter is composed of two sections of graded-index few-mode optical fibers inscribed with spiral long-period fiber gratings and a section of step-index few-mode optical fiber. The orbital angular momentum mode converter provided by the invention can generate ultrahigh orbital angular momentum mode channels under wide bandwidth, and the channel interval can be flexibly controlled by changing the length of the step refractive index optical fiber. In addition, the periods of the two spiral long-period fiber gratings are reasonably designed, and multi-channel orbital angular momentum mode conversion of different orders can be achieved. The device is simple in structure, convenient to manufacture and high in reliability, and has certain practicability.

A Coarse Wavelength Division Multiplexing filter system and methods based on an angled bent multimode interferometer. The system includes one input port; a plurality of output ports; and a bent multimode waveguide connecting the input port and the plurality of output ports, having an inner radius of R mmi; wherein light incident to the input port is demultiplexed into a plurality of wavelength channels(ch1, ch2, ch3, ch4). The inner radius R mmi and / or an excited mode order range of the CWDM filter system can be optimized to form a high-quality self-image at the output ports. An angle between a middle portion of respective input port and the output portions and tangent of an inner arc of the bent multimode waveguide is defined as θ IO; the input port and the output ports each has a width W IO. θ IO and W IO can be optimized for sufficient distances between adjacent output ports for channel spacing such that a minimal crosstalk between output wavelength channels is obtained.

The application provides an online near-infrared spectrum detection method and system for biomass raw material components, and relates to the technical field of component detection. Firstly, the particle size distribution and the near-infrared spectrum data of the biomass raw material are acquired in real time, and the two types of data are time-stamped and aligned to establish a correlation mapping. Secondly, based on the mapping data, the channel spacing of a multi-channel adjustable distance optical attenuator is dynamically adjusted to generate standardized spectrum data that eliminates particle size interference. Then, by assigning differentiated weights to the characteristic wavebands of each main component, enhanced characteristic spectrum data is constructed. Finally, a multi-output regression model is established using pre-set samples, and the contents of cellulose, hemicellulose, lignin and other components are simultaneously inverted by inputting the enhanced characteristic spectrum data into the model, thereby realizing rapid and accurate online detection of the components of the biomass raw material in the continuous conveying process.

The application discloses a kind of optical fiber data transmission methods and systems based on wavelength division multiplexing, it is related to optical fiber data transmission technical field, the method comprises: constructing the standard wavelength distribution and channel spacing reference distribution of each wavelength channel in wavelength division multiplexing optical fiber network;Real-time detection current wavelength offset and current optical power parameter of each wavelength channel, obtain prediction wavelength offset distribution sequence;According to prediction wavelength offset distribution sequence, standard wavelength distribution and channel spacing reference distribution, calculate the expected crosstalk intensity distribution sequence and expected transmission quality influence distribution sequence between each wavelength channel;Obtain the optimal optical power parameter of each wavelength channel, and carry out crosstalk suppression to the wavelength division multiplexing optical fiber network.The problems of serious crosstalk and unstable transmission quality in the wavelength division multiplexing network of existing optical fiber data transmission technology are solved.

An optical distribution node, ODN, 100 comprises downstream, DS, optical routing apparatus (110) and upstream, US, optical routing apparatus 120. The DS optical routing apparatus comprises DS output ports (112) and a DS input port (114) for receiving wavelength division multiplexed, WDM, DS channels having a first channel spacing. The DS optical routing apparatus (110) is configured to distribute the WDM DS channels into WDM DS channel sub-sets, the WDM DS channels in the sub-sets are non-contiguous and have larger channel spacing, and to route WDM DS channel sub-sets to different DS output ports. The US optical routing apparatus (120) comprises a US output port (122) and US input ports (124) for receiving WDM US channel sub-sets of WDM US channels, the WDM US channels in the sub-sets are non-contiguous and have the larger channel spacing. The US optical routing apparatus is configured to combine the WDM US channel sub-sets, the combined WDM US channels have the first channel spacing, and to route the combined WDM US channels to the US output port.

Aspects of the disclosure are directed to a Bluetooth sounding channel (BCS) configuration that configures channels for sounding within bandwidth section(s) in accordance with a uniform inter-channel spacing. In an aspect, the uniform inter-channel spacing is an integer that is greater than or equal to 2. Such aspects may provide various technical advantages, such as providing reasonable ranging accuracy while also providing power savings, more efficient over-the-air (OTA) resource utilization and reduced ranging latency.

The invention provides an atomic antenna array system and a cross-band microwave measurement method. The atomic antenna array system comprises a detection light array assembly, a coupling light array assembly, a first dichroic mirror, a first reflector, a second dichroic mirror, a second reflector, an atomic gas chamber module, a local oscillator microwave module and a detection module. The detection light array assembly is used for outputting a collimated detection light beam array. The coupling light array assembly is used for outputting a coupling light beam array of a target distribution configuration. The atomic antenna array system can control the beam array distribution, and dynamically adjust the channel spacing and topological structure configuration of the coupled light beam array according to the target distribution configuration, thereby improving the phase matching of each channel, and achieving the cross-band microwave array detection. Coherent superposition of signals of all channels can be ensured through the detection module, so that antenna large-array enhanced detection is realized. Therefore, the signal measurement sensitivity and the measurement frequency coverage range of the atomic antenna array system can be effectively improved.

This invention discloses a dual-band TR component using a non-circular cluster connector, relating to the field of radio frequency and microwave technology. Specifically, it includes a structural cavity and a non-circular cluster connector. Metal cover plates on both sides of the structural cavity form first and second sealed cavities, each housing a power supply board for one frequency band, a microstrip line, and an RF chip. The non-circular cluster connector includes an outer conductor and an insulator, with one central pin and two central pins fixed inside. Central pin one extends into the first sealed cavity to connect to microstrip line one, and central pins two extend into the second sealed cavity to connect to microstrip line two. This invention enables the simultaneous transmission of three signals using a single non-circular connector, breaking the thickness limitations of double-sided layouts, avoiding the risk of hole breakage due to excessively close connector spacing, and achieving high integration and high isolation with extremely small channel spacing.

A method for the structural design and performance optimization of a cross-flow microchannel heat exchanger is described. This method establishes a countercurrent single-channel model to screen microchannel size, wall thickness, channel spacing, and cross-sectional shape. Based on the optimal structural parameters, a local model of the cross-flow microchannel heat exchanger is established. By determining the optimization order for the cross-flow microchannel heat exchanger's structural parameters and adjusting structural parameters such as cross-sectional shape and channel size, iterative optimization of heat transfer capacity and uniformity is performed to obtain a cross-flow microchannel heat exchanger core structure that meets both heat transfer capacity and thermal stress requirements. This method can reduce the amount of simulation computation required during the design and optimization of a cross-flow microchannel heat exchanger and optimize the uneven temperature distribution caused by the crossflow of hot and cold fluids, effectively reducing heat transfer non-uniformity within the cross-flow microchannel heat exchanger.

The invention belongs to the technical field of radar signal processing, and provides a DBF-SAR multi-jammer positioning method and device based on phase search, and the method comprises the steps: carrying out the processing of an echo signal containing interference based on a signal model, and obtaining a system receiving signal, the signal model is used for predicting the phase relation between the received interference signal and the lower visual angle of the jammer; the echo signal containing interference comprises a signal transmitted by at least one jammer; converting the system receiving signal into a time-frequency domain to obtain a time-frequency domain signal, and sequentially separating and extracting interference in the time-frequency domain signal to obtain interference signals received by different channels; and establishing an optimization model according to the phase difference of the interference signals received by the different channels so as to determine the distance direction position of each jammer. According to the method, the channel cancellation principle is utilized, the limitation of channel spacing is broken through, and high-precision positioning of the multiple jammers is achieved.

A semiconductor device including a stack structure including gate layers and interlayer insulating layers spaced apart in a vertical direction, a channel hole penetrating the stack structure in the vertical direction, a core region extending within the channel hole, a channel layer disposed on a side surface of the core region, a first dielectric layer, a data storage layer and a second dielectric layer, which are disposed between the channel layer and the gate layers, and a pad pattern disposed on the core region, in the channel hole, and in contact with the channel layer. A first horizontal distance between a side surface of a first portion of an uppermost gate layer and an outer side surface of the channel layer is greater than a second horizontal distance between a side surface of a second portion of the uppermost gate layer and an outer side surface of the pad pattern.

The invention relates to the technical field of optical communication, in particular to a filtering structure, a wavelength division multiplexing structure and an optical chip, and aims to solve the problem of how to pre-filter wide-spectrum optical signals input into a wavelength division multiplexer so as to reduce channel crosstalk of the wavelength division multiplexer. In order to achieve the purpose, the wavelength division multiplexing structure comprises a folding interference output structure, an all-pass micro-ring resonator and a wavelength division multiplexer, and the resonance center wavelength of the folding interference output structure is consistent with the resonance center wavelength of the all-pass micro-ring resonator and is consistent with the output center wavelength of the wavelength division multiplexer; and the free frequency spectrum ranges of the folding interference output structure and the all-pass micro-ring resonator are the same as the channel spacing of the wavelength division multiplexer. Through the folding interference output structure and the all-pass micro-ring resonator, multiple times of resonant filtering is carried out on the optical signal of the target wavelength, the intensity of the optical signal of the non-target wavelength is greatly inhibited, pre-filtering of the input optical signal of the wavelength division multiplexing structure is realized, and thus the channel crosstalk of the wavelength division multiplexing structure is reduced.

The invention discloses a batch detection system and method for electronic ink screen driving substrates, and relates to the technical field of electronic circuit testing. The system comprises an integral contact electrode, a reference impedance unit, a switching control module and a measurement analysis module. The switching control module selects to apply a reference signal to a single channel or an integral contact electrode, and cooperates with the reference impedance unit to respectively realize short circuit detection of an isolation state between channels and resistance detection of a conduction state of each channel. By adopting a large-area soft contact mode, the detection efficiency is high, the flexible circuit is not damaged, and the measurement result is accurate and reliable.

The present invention provides a method and system for suppressing grating lobes of a wide-space planar phased array antenna. The method suppresses grating lobes by symmetrically staggering subarrays. The method includes: dividing the antenna array surface into symmetrically arranged unit block column subarrays of 6 or more even columns, wherein the azimuth difference beam and elevation difference beam of the antenna array surface are symmetrically distributed; arranging the unit block column subarrays from left to right along the x-direction, with the unit block column subarrays in the second column from the left and the unit block column subarrays in the second column from the right being staggered with the remaining unit block column subarrays by a set spacing, thereby splitting the first grating lobe into two in the azimuth direction. The present invention has an active channel spacing of 2.67λ0 in the elevation direction, which improves the grating lobe suppression effect; appropriately compresses the elevation spacing to increase the scanning area under the same grating lobe suppression conditions; fully utilizes aperture efficiency, improves aperture utilization, and reduces the number of active channels and array surface cost and weight; the antenna unit blocks are arranged in a matrix array, which is easy to integrate, and the subarray staggered structure and array surface structure layout are easy to implement in engineering.

Example embodiments of the present disclosure are directed to component carrier (CC) transmission for power spectral density imbalance A method comprises receiving, from a second apparatus, configuration information for testing at least one of maximum output power reduction for carrier aggregation or additional maximum output power reduction for carrier aggregation; determining, based on the configuration information, a first number of resource blocks (RBs) for a first CC and a second number of RBs for a second CC, a gap between the first number of RBs and the second number of RBs being larger than a nominal channel spacing, and the first number being different from the second number; and performing, simultaneously, a first transmission to the second apparatus via the first CC using the first number of RBs and a second transmission to the second apparatus via the second CC using the second number of RBs.

The invention relates to the technical field of optical fiber sensing demodulation, in particular to a fiber bragg grating demodulation system based on phase modulation and an arrayed waveguide grating. A narrow linewidth laser of the system is used for generating an optical signal; the optical circulator is used for transmitting an optical signal to the fiber bragg grating sensor and receiving reflected light; the high-speed phase modulator is used for performing phase modulation on the reflected light to generate an optical frequency comb; the multi-channel array waveguide grating is used for dispersing light with different spectral components in the optical frequency comb to corresponding output channels according to wavelengths; the photoelectric detection array is used for detecting the optical power of the output channel and converting the optical power into an electric signal; and the digital signal processing unit is used for collecting the electric signals, comparing the electric signals with the calibration database and demodulating the central wavelength of the fiber bragg grating sensor. According to the invention, the defect that the traditional array waveguide grating demodulation method is limited by channel spacing and is difficult to realize high resolution is overcome, and the demodulation precision is improved.

Absorbent product including a laminate of at least two plies, wherein the absorbent product has a measured Y-Connected Area parameter greater than 20 and a Surface Channel Spacing of less than 2.5 mm. The absorbent product has high strength and low machine direction stretch.

The invention, which belongs to the technical field of optical communication, discloses an optical receiving assembly comprising a circuit board, an array waveguide grating, a photoelectric detector, a trans-impedance amplifier and a substrate. The circuit board is provided with a first conductive pattern, and the first conductive pattern comprises a plurality of pairs of differential signal lines and a plurality of grounding lines of a receiving end. A second conductive pattern is arranged on the substrate, the second conductive pattern comprises a plurality of pairs of fan-out differential traces and a plurality of fan-out ground wires, the fan-out ground wires are fan-out side by side, a pair of fan-out differential traces is arranged between every two adjacent fan-out ground wires, and the trans-impedance amplifier is electrically connected with the circuit board through the second conductive pattern. The substrate is added between the trans-impedance amplifier and the differential signal lines of the circuit board, and the fan-out differential traces are arranged on the substrate so as to be matched with the channel spacing of the differential signal lines with larger channel spacing on the circuit board, so that the length of the bonding wire can be shortened, the signal crosstalk is further reduced, and the high-frequency performance is optimized.

The invention discloses an optical fiber data transmission method and system based on wavelength division multiplexing, and relates to the technical field of optical fiber data transmission, and the method comprises the steps: constructing standard wavelength distribution and channel interval reference distribution of each wavelength channel in a wavelength division multiplexing optical fiber network; detecting the current wavelength offset and the current optical power parameter of each wavelength channel in real time to obtain a predicted wavelength offset distribution sequence; calculating an expected crosstalk intensity distribution sequence and an expected transmission quality influence distribution sequence between wavelength channels according to the predicted wavelength shift distribution sequence, the standard wavelength distribution and the channel interval reference distribution; and obtaining an optimal optical power parameter of each wavelength channel, and performing crosstalk suppression on the wavelength division multiplexing optical fiber network. The problems of serious crosstalk and unstable transmission quality of a wavelength division multiplexing network in the existing optical fiber data transmission technology are solved.