4results 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.

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 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.