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4 results about "Radar-absorbent material" patented technology
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Radiation-absorbent material, usually known as RAM, is a material which has been specially designed and shaped to absorb incident RF radiation (also known as non-ionising radiation), as effectively as possible, from as many incident directions as possible. The more effective the RAM, the lower the resulting level of reflected RF radiation. Many measurements in electromagnetic compatibility (EMC) and antenna radiation patterns require that spurious signals arising from the test setup, including reflections, are negligible to avoid the risk of causing measurement errors and ambiguities.
Intelligent reflecting surface
According to one embodiment, an intelligent reflecting surface includes a first substrate, a second substrate, a sealing material, a liquid crystal layer, and a radar absorbent material. The first substrate includes a first basement located in a first area and a second area, and a plurality of patch electrodes. The second substrate includes a second basement and a common electrode. The radar absorbent material is located in the second area.
Owner:JAPAN DISPLAY INC
System and method for attenuating and / or terminating RF circuit
ActiveUS12498395B2Printed circuit aspectsCoupling device detailsRadar-absorbent materialHemt circuits
A high-speed circuit assembly includes a high-speed circuit including at least one waveguide / transmission line, and a radiation absorbing material disposed in contact with or in close proximity with the waveguide / transmission line.
Owner:XCERRA CORP
Simulating multi-directional mobility inside a radio frequency chamber through belt-driven movement systems
PendingUS20260036612A1Electromagentic field characteristicsAntenna radiation diagramsRadar-absorbent materialClassical mechanics
Various implementations generally relate to systems and methods for simulating movement of multiple wireless devices inside an RF testing chamber. Internal surfaces of the RF testing chamber are covered with a radiation absorbent material. Multiple belt-driven movement systems including a belt and a holder component are affixed inside the RF testing chamber, and a wireless device is attached to each holder component of each belt-driven movement system. The wireless devices are enabled to move in a direction along the orientation of each belt-driven movement system by controlling a motor of each belt-driven movement system to simulate multi-directional mobility inside the RF testing chamber.
Owner:T MOBILE US INC
Small things in large an long hole collimator for high-sensitivity and high resolution radiation imaging system
A high sensitivity, high-spatial-resolution radiation imaging system aimed at performing section images of emitted radiation. This system includes a collimator having at least one large opening to obtain a high-sensitivity. The high spatial-resolution is obtained by the disposition at the entrance of the holes of the collimator of one or several small thing (chip or rods) made in radiation-absorbing material whose base polygon projection approaches with either the shape of the detector pixel or the shape of the reconstructed voxels. The camera head is displaced in motion, composed of scanning exploration and / or rotation around the sources of radiation. Information collected by the detector, combined with information relating to the position of the head of the camera relative to the emitting object are processed to recover the tomographic images. The presence of the aforementioned small things reduces the condition number of the transfer matrix of the system.
Owner:JEANGUILLAUME CHRISTIAN