7 results about "Transmission curve" patented technology

The application provides a passive equalizer for inter-core particle interconnection and an inter-core particle interconnection system, which comprises upper sawtooth metal copper wires, lower sawtooth metal copper wires, a first via and a second via; the upper sawtooth metal copper wires are provided with the second via on one side and connected to the lower sawtooth metal copper wires through the first via on the other side; and the upper sawtooth metal copper wires and the lower sawtooth metal copper wires are both provided in a sawtooth shape and staggered. The double-layer sawtooth cross metal copper wires embedded in the metal grounding layer can effectively solve the serious inter-symbol interference (ISI) problem existing in the high-speed parallel data transmission system, and the voltage transmission curve of the channel in the transmission system is flattened in the range of direct current frequency and Nyquist frequency, so that the eye diagram quality of the receiver is obviously improved.

The application discloses a high-order mode coupler based on a double-inhibition structure of a transmission line model and a design method, and belongs to the accelerator physics and superconducting high-frequency technical field.The method comprises the following steps: determining a superconducting cavity base mode frequency, a high-order mode frequency band and an external quality factor Qe requirement; establishing an equivalent transmission line model comprising two parallel resonance base mode inhibition structures; optimizing a transmission curve through a normalized scattering matrix theory; converting the optimized transmission line model into a three-dimensional structure and further optimizing; modeling and calculating the external quality factor Qe in combination with the superconducting cavity; performing secondary electron multiplication effect simulation analysis; performing thermal load analysis by using an iterative process; and finally completing mechanical design.The application adopts the double-inhibition structure, greatly improves the base mode inhibition bandwidth, realizes deep inhibition of the base mode without pre-tuning, significantly reduces the superconducting module integration cost, improves the assembly efficiency and reduces the operation risk.

The invention discloses a high-order mode coupler based on a transmission line model dual-suppression structure and a design method, and belongs to the technical field of accelerator physics and superconducting high frequency. The method comprises the following steps: determining the fundamental mode frequency, high-order mode frequency band and no-load quality factor Qe requirements of the superconducting cavity; establishing an equivalent transmission line model comprising two parallel resonant fundamental mode suppression structures; optimizing a transmission curve through a normalized scattering matrix theory; converting the optimized transmission line model into a three-dimensional structure and further optimizing the three-dimensional structure; carrying out overall modeling with the superconducting cavity to calculate a no-load quality factor Qe; secondary electron multiplication effect simulation analysis is carried out; carrying out thermal load analysis by adopting an iterative process; and finally, mechanical design is completed. The dual-suppression structure is adopted, the fundamental mode suppression bandwidth is greatly improved, deep suppression of a fundamental mode is achieved, pre-tuning is not needed, the integration cost of the superconducting module is remarkably reduced, the assembly efficiency is improved, and the operation risk is reduced.

An electroabsorption modulation laser (EML) device features a deployed modulator to improve the modulation efficiency and the steepness of the transmission curve. The EML device typically includes a laser segment, such as a distributed feedback (DFB) laser segment, an electroabsorption modulator (EAM) segment, and an isolation segment between the laser segment and the EAM segment. The EML device also includes an active region containing quantum well structures located within the laser segment and the EAM segment. The mesa segment spans the laser segment, the isolation segment, and the EAM segment and is deployed, such that at least a portion of the isolation mesa segment narrows outwards, and at least a portion of the modulator mesa segment narrows inwards. The EML device can be a ridge waveguide (RWG) type EML device or a buried heterostructure (BH) type EML device.

A kind of multi-threshold phase encoding-based all-optical quantization system belongs to all-optical analog-digital conversion field.It includes high repetition frequency femtosecond pulse light source,1×M optical splitter,phase-shifted optical quantization module, soliton self-frequency shift module and multi-threshold encoding module;The phase-shifted optical quantization module is M-path electro-optic modulator;The soliton self-frequency shift module includes first M-path high nonlinear fiber,M-path single-mode fiber and second M-path high nonlinear fiber;The multi-threshold encoding module includes M wavelength division multiplexer,M×N optical delay line array,M×N photodetector array and encoding module.The present application uses multi-threshold encoding module of phase encoding,realizes simultaneous judgment of multiple threshold points on power transmission curve of M electro-optic modulators, solves code type repetition problem of all-optical quantization system,realizes more effective quantization states with less channel number,improves quantization precision.Meanwhile,quantization bit number of the present application is improved to log2(2MN).

The invention discloses a method, a device and equipment for calibrating a streamline successive approximation type analog-to-digital converter, relates to the technical field of analog-to-digital converters, and aims to solve the problems that the conventional method for calibrating the streamline successive approximation type analog-to-digital converter is limited by a specific architecture and needs an additional circuit or algorithm. The method comprises the following steps of: obtaining basic data of a Pipelined-SAR ADC (Synthetic Aperture Radar Analog to Digital Converter) to be calibrated; generating a transmission curve of the first-stage MDAC according to the equivalent input signal and the equivalent output signal; determining a jump amplitude and a jump type corresponding to each capacitor weight position; and calculating the mismatch value of each capacitor according to the jump amplitude, the jump type and the capacitor weight corresponding to each capacitor weight position. Calibration is made based on the mismatch value. The calibration method for the streamline successive approximation type analog-to-digital converter is suitable for calibration of streamline successive approximation type analog-to-digital converters of different architectures, and extra circuits or algorithms are not needed.

The present application belongs to the technical field of frequency selective surface design, and particularly relates to a FSS angle stability improvement method, system, device and medium based on an equivalent circuit model; the method first builds an equivalent circuit model of a FSS with a known structure, optimizes the equivalent circuit model parameters of the FSS by using a multi-objective particle swarm optimization method, so that the equivalent circuit model of the FSS meets the target electrical performance, and then collects transmission curve data sets under normal incidence and other angle incidence conditions by using simulation software, and then trains a full connection type neural network by using key feature points of the transmission curve and corresponding FSS structure parameters, to obtain a trained full connection type neural network; finally, the key feature points of the target transmission curve are input into the trained full connection type neural network for inversion prediction, to obtain FSS target structure parameters corresponding to the target transmission curve; the method has the advantages of short optimization cycle, reduced time and calculation resource waste, and high generalization versatility.