4results about How to "Avoid nonlinear effects" patented technology

The invention discloses a solid-state battery cycle test method and test equipment, relates to the technical field of electrical variable measurement, and is used for improving the accuracy of evaluating the electrochemical performance of a solid-state battery material. According to the method, a test device determines a force-electricity coupling characteristic parameter of the interface constraint modulus based on electrochemical data and mechanical data of the solid-state battery in the cycle process, and then a modulus evolution curve of the interface constraint modulus along with the number of charge-discharge cycles is constructed; and by analyzing the sequential relationship between the derivative of the modulus evolution curve and the capacity fading, the failure reason is attributed to the interface pressure contact failure of the physical level before the macroscopic performance failure of the solid-state battery, so that the accuracy of evaluating the electrochemical performance of the solid-state battery material is improved.

A photonic analog-to-digital conversion (ADC) method and converter based on the optical trapping principle is disclosed. This method utilizes multiple continuous light sources to load sampled analog signals and controls the input of each analog signal to the optical trapping module at equal time intervals via optical delay lines, achieving signal discretization in the time domain. The use of multiple continuous light sources increases the total input power of the photonic ADC system. Furthermore, the multiple optical signals are modulated and delayed by analog signals before being synthesized into a single signal, avoiding the nonlinear effects caused by excessively high total optical power resulting from directly synthesizing multiple continuous light sources. This invention's photonic ADC method based on the optical trapping principle overturns the traditional method of generating pulsed light before photonic sampling, increasing the total input power of the photonic ADC system and effectively offsetting the impact of optical power loss on the conversion accuracy. Based on this method, a high-precision on-chip photonic ADC system can be achieved.

The application discloses a DRoF transmission method and system based on DS modulation combined with irregular PAM8 probability shaping, and the method steps are as follows: in the BBU, QAM-OFDM radio frequency signal modulation is completed on bit information, and a Delta-Sigma bandpass modulator is used for bandpass sampling on the radio frequency signal to generate an NRPS-PAM8 signal; after pulse shaping of the coded PS-PAM8 symbol, a modulation signal is generated, and after electro-optical conversion, the modulation signal is transmitted to a remote antenna unit by a single-mode optical fiber; in the RRU, after signal equalization, the received signal is sent to a PAS decoder for decoding, and the symbol generated by the decoding is recovered into an OFDM radio frequency signal by a digital-to-analog converter after bandpass filtering, and finally, wireless transmission is completed through an antenna. The application realizes efficient quantization of the OFDM radio frequency signal, significantly improves the signal quantization efficiency and system spectral efficiency of the DRoF system, and makes the system applicable to future mobile front-haul architectures.

The utility model discloses a kind of Faraday rotator and magneto-optical switch for magneto-optical switch, it is related to optical device technical field, wherein, Faraday rotator includes coil framework, magneto-optical crystal and multiple magnetic field generating components;Magneto-optical crystal is located at coil framework;Multiple magnetic field generating components are connected in parallel, multiple magnetic field generating components are spaced and arranged side by side, and from one end of coil framework, the other end of coil framework is wound, and single-layer solenoid inductance structure is formed;The technical scheme provided by the utility model can solve the problems of poor heat dissipation performance and slow switching speed of existing magneto-optical switch.