Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

120results about How to "Maximize absorption" patented technology

Method and apparatus for reducing capacitively coupled radio frequency energy between a semiconductor device and an adjacent metal structure

A bolster plate apparatus, used to secure a semiconductor device intermediate a printed circuit board and a heat sink apparatus, includes either an indentation or an open aperture into which a radio frequency absorptive material may be disposed. The absorptive material may be a ferrite material specifically selected to absorb frequencies in the range of the second to fourth harmonic of the processor clock signal frequency. The type of the ferrite material implanted in the bolster plate is selected to maximize the absorption of radio frequency energy, particularly that emitted at the pad vias on the underside of the printed circuit board, without affecting the signal integrity of the other pad connections. The shape of the cutout or aperture is also defined by the arrangement of RF emitting pads on the underside of the printed circuit board. The open aperture, without any absorptive material, effectively increases the distance between the source of the radio frequency energy and the metal body of the bolster plate, thereby reducing the amount of radio frequency energy absorbed by the bolster plate and the electromagnetic interference generated thereby. Also disclosed is a method for reducing the radiated emission from an adjacent semiconductor device by selectively removing pads from the undersurface of the PCB board to effectively reduce the sources of the radio frequency energy, and, therefore the amount of RF energy capacitively coupled with RF energy metal body of the bolster plate.
Owner:ORACLE INT CORP

Buffer energy absorption device based on magneto-rheological materials

The invention relates to a buffer energy absorption device based on magneto-rheological materials. The buffer energy absorption device comprises a double-sleeve structure and a magnet exciting coil used for generating a magnetic field. The double-sleeve structure is composed of an outer sleeve and an inner sleeve. One end of the double-sleeve structure is fixedly connected with a base, and the other end of the double-sleeve structure is fixedly connected with a sealing end cover. The double-sleeve structure is filled with the magneto-rheological materials. A gap is reserved between the outer sleeve and the inner sleeve of the double-sleeve structure and serves as an annular fluid channel. A piston is arranged in an inner cavity of the inner sleeve. A spring is arranged between the piston and the base. The piston and the inner wall of the inner sleeve are in sliding fit. The piston is fixed to a piston rod which extends out of the double-sleeve structure through the sealing end cover. A buffer head is arranged at the extended end of the piston rod. An opening is formed in the end, close to the base, of the inner sleeve to enable the inner cavity of the inner sleeve to be communicated with the annular fluid channel. A communication pipe is arranged at the end, close to the sealing end cover, of the double-sleeve structure to enable the annular fluid channel to be communicated with the inner cavity of the inner sleeve. According to the buffer energy absorption device based on the magneto-rheological materials, the damping force of a buffer device is adjusted in real time according to the magnitude of external impact force, and therefore the optimal buffer energy absorption effect is achieved.
Owner:CHONGQING MATERIALS RES INST

Floating draught fan platform wave absorbing and roll stabilization power generation device and active control method thereof

The invention provides a floating draught fan platform wave absorbing and roll stabilization power generation device and an active control method thereof. The floating draught fan platform wave absorbing and roll stabilization power generation device comprises three platform pile legs and supporting rods for being connected with the platform pile legs; a wave absorbing floater is arranged inside each platform pile leg, the upper end of each wave absorbing floater is provided with a stepping motor, a linear power generator rotor is connected to the output end of each stepping motor, and the lower end of each linear power generator rotor is provided with a thread; a buffer spring is matched with each thread of the corresponding linear power generator rotor through a thread seat, and the upper end of each buffer spring is connected with the inner top of the corresponding platform pile leg; the upper end of each platform pile leg is provided with the corresponding linear power generator rotor, and the upper ends of the linear power generator rotors sequentially penetrate through the buffer springs, the platform pile legs and linear power generator stators; and the outer surface of each platform pile leg is further provided with a bracket, and each bracket is provided with an incoming wave signal collecting device and an incoming wave signal processing device. The floating draught fan platform wave absorbing and roll stabilization power generation device can stay in the best wave absorbing and roll stabilization position all the time, and the efficiency of the wave absorbing and roll stabilization power generation device is greatly improved.
Owner:HARBIN ENG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products