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Folded-type waveguide is a kind of significant slow wave structure (SWS) for developing high power millimeter wave and terahertz wave source. This paper reports the study on the folded type waveguide and its applications in millimeter wave and THz source in Vacuum Electronics National Laboratory(VENL) in China, in which the analysis and simulation of the RF properties and the electron beam-wave interaction...
This paper presents a digital closed loop control method for the sense mode of a mode-matching MEMS vibratory gyroscope. The sense closed loop system reported in our previous work is relatively complex and unreliable due to the existence of notch filter. In this work, a more simple and robust control system is realized with the help of mode-matching control. With a tuning voltage automatically applied...
We present an 8.0-Gb/s HyperTransport™ technology I/O built in a 32-nm SOI-CMOS processor for high-performance servers. Based on a 45-nm design that caps at 6.4 Gb/s, the 32-nm transceiver achieves up to 8.0 Gb/s over long-reach board channels. Key enhancements include a high-bandwidth (>200 MHz) PLL to attenuate high-frequency jitter in the received forwarded clock and redesigned power-hungry...
The LSST project will provide public access to a database catalog that, in its final year, is estimated to include 26 billion stars and galaxies in dozens of trillion detections in multiple petabytes. Because we are not aware of an existing open-source database implementation that has been demonstrated to efficiently satisfy astronomers' spatial self-joining and cross-matching queries at this scale,...
A novel circular polarized patch antenna with modified T-probe fed structure is proposed. By replacing the bent part of a T-probe with a printed strip on the substrate and by placing a radiating patch beneath the substrate, the proposed antenna can be more easily fabricated by using the printed technology. The simulation and experimental results show that the modified T-shaped probe single-fed CP...
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