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Recently, the application field of a high-speed differential transmission system has expanded, and shielded twisted pair cables (STP cables) are used for the system. Therefore, it is necessary to understand the characteristics of the STP cable. In this paper, we study the relation between noise susceptibility performance of a STP cable and terminal grounding condition of the shield sheath of the STP...
We examined about the electromagnetic field immunity test system applying the array antenna technology. This system is able to get the high uniformity of electric field and the high power electric field near the antenna, in a wideband, by the beam forming technology. This system applied the array antenna technology which is constructed by 128-element array antenna with low price and low power amplifiers...
We studied a CMC model with a one-turn toroidal core, which is easily used in 3D field simulators. The calculation model of a CMC differs from the actual shape, so we need to correct the CMC's characteristics. When we calculated the noise-suppressing effect of the CMC, we used relative permeability, which differs from the actual value, to approximate the actual characteristics of a CMC. From the comparison...
We report on GaN-based distributed-feedback surface-emitting lasers on a sapphire substrate. Two-dimensional photonic crystal gratings in our device were embedded into GaN-based structures by mass-transport phenomena. We have observed room-temperature pulsed lasing at 406.0 nm.
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