7results about How to "Symmetrical" patented technology

This invention discloses a data encoding system and method based on simplicated complex homogeneous linear codes. The system includes: a parameter initialization module for initializing the construction parameters of an n-ary multivariable function F; a function definition module for generating the multivariable function F based on the construction parameters; and a definition set extraction module for constructing a definition set D. F ; Linear code generation module, used to generate linear codes according to the definition set D F This invention employs an inner product mapping to construct a basic p-ary linear code corresponding to the defined set; a homogenization processing module is used to homogenize the multivariable function F to obtain an (n+1)-ary homogeneous function; and a homogenized code generation module is used to generate a homogenized definition set based on the homogenized function, and then generate a homogenized p-ary linear code based on this set. This invention solves the problems of existing p-ary linear code construction techniques being complex in structure, having uncontrollable parameters, or being difficult to analyze weight distribution, leading to difficulties in efficient deployment in engineering.

This invention provides a siloxane ligand-protected Ag 40 Nanoclusters, their synthesis methods, and applications. This invention relates to Ag protected by siloxane ligands. 40 Nanoclusters are composed of RC≡C ‑ and (Ph 4 Si 4 O 8 ) 4‑ Ag protected by both ligands 40 Nanoclusters, with the molecular formula {Ag} 40 [(RC≡C) 8 (Ph 4 Si 4 O 8 ) 6 The silver nanoclusters synthesized in this invention have precise atoms and novel structures; the synthesis method is simple, easy to operate, mild under mild conditions, and the raw materials are readily available, making it potential for industrial and commercial production; the obtained silver nanoclusters exhibit superior fluorescence performance at low temperatures and have a long fluorescence lifetime, making them practically valuable in the field of fluorescent probes and worthy of market promotion.

The invention discloses an adjustable terahertz metamaterial band elimination filter, and belongs to the technical field of terahertz metamaterials, and the adjustable terahertz metamaterial band elimination filter comprises a plurality of unit structures which are periodically arranged; each unit structure comprises a top layer, a dielectric layer and a bottom layer which are sequentially arranged from top to bottom; the central points of the top layer, the dielectric layer and the bottom layer are positioned on the same straight line; the top layer and the bottom layer are both metal-vanadium dioxide composite layers, and the resonance units of the top layer and the bottom layer are the same in structure. The resonance unit structure comprises a metal structure and a vanadium dioxide structure. According to the invention, the problem that the filtering function can only be realized at a specific resonant frequency once the structural parameters of the existing metamaterial are determined is solved.

The present invention provides a differential disk-fed Taiji diagram-shaped patch circularly polarized antenna based on an inverted-F structure in the technical field of microwave antennas, which includes a radiator, a dielectric substrate, a metal through-hole, a differential feeding probe with a loaded disk, and a ground plane. The radiator is connected to the upper surface of the first-layer dielectric substrate, and the radiator is connected to the metal through-hole. The metal through-hole penetrates through the first-layer and second-layer dielectric substrates and is connected to the ground plane; the differential probe feeds the radiator through a disk at the top, and the bottom of the differential feeding probe forms a feeding port with the ground plane. The present invention improves the function of the circularly polarized antenna and designs a differential disk-fed Taiji diagram-shaped patch circularly polarized antenna based on an inverted-F structure, realizing the characteristics of high gain, wide bandwidth, and wide axial ratio.

An ATA-type integrated absorber-transmitter structure unit with high angular stability includes a first impedance layer, a second impedance layer, and a frequency selective surface layer arranged from top to bottom. The first impedance layer consists of four identical cubic structures with openings at the top and bottom, forming a grid pattern. The sides of each cubic structure are first dielectric layers, and first metal layers are attached to the outer surfaces of two adjacent sides of the same cubic structure. The second impedance layer includes a rectangular second dielectric layer and a square annular second metal layer located on the upper surface of the second dielectric layer. The frequency selective surface layer includes a third dielectric layer and a fourth metal layer located on the upper surface of the third dielectric layer. The fourth metal layer has metal slits with the exact same shape and position as the X-shaped slits. The ATA-type integrated absorber-transmitter material of this invention has symmetrical characteristics, giving the overall material dual-polarization properties and a balanced absorption and transmission effect.

The invention discloses a dynamic random access memory, a read operation method thereof and electronic equipment. The dynamic random access memory comprises more than two storage unit groups, wherein each storage unit group comprises at least one row of storage units; the sensitive amplifier groups are positioned between the adjacent storage unit groups, each sensitive amplifier group comprises a row of sensitive amplifiers, and the sensitive amplifiers are connected with the same row of storage units of the adjacent storage unit groups through bit lines; the redundant amplifier group is connected with the end storage unit group in the more than two storage unit groups through residual bit lines and is used for enabling control signal coupling to have symmetry when the dynamic random access memory is subjected to read operation; wherein each redundant amplifier group comprises at least one redundant amplifier; the residual bit lines are bit lines which are not connected with the sensitive amplifier group in the dynamic random access memory. By adopting the scheme, the sensing margin of the dynamic random access memory can be improved, and the reading performance of the dynamic random access memory can be improved.

The application discloses a memory operation system compliant with DDR memory access timing, and belongs to the field of memory and scientific calculation, comprising: a row-level parallelism driven timing termination mechanism, which utilizes row nonlinear charging characteristics to reduce tail delay of tRCD and tRP; and a row block interleaving, row-column collaborative vector-matrix multiplication (VMM) access mechanism, which reduces tRAS and overlaps CL timing parameters without increasing peripheral column ADC precision overhead, and reduces cross-point RAM internal core delay; the proposed row access and column access collaborative optimization memory hardware design can enable VMM operation compliant with DDR memory access timing in a memory-centric manner, so as to realize efficient hardware execution of low-delay, high-bit-width data-intensive scientific calculation (computational physics) loads.