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This paper proposes a capacitive miniature PIFA works at UHF band. Double-layer mushroom structure EBG is used as a reflector of the PIFA instead of PEC. The size of the new PIFA is 1/8 of the operation wavelength and 1/2 of the traditional one. The EBG structure enhances the radiation efficiency of the antenna about 33.3%.
The input resistance of CMOS circuits is a measurable limit on the performance of typical static CMOS logic gates. A survey of measured data from five generations of CMOS technology including polysilicon oxynitride gate first stacks (P-SiON), high K metal gate first stacks (GF), and high K replacement metal gate stacks (RMG) shows a trend of increasing gate resistance. We show DC and RF measurements...
In the advantage of high reliability, environment friendly and maintenance-free, VCB has possessed the large-scale market capacity in China and other countries in worldwide. At the same time, compact 40.5kV air insulated switchgear with VCB is mostly used in power substation of 220kV and industry consumer with heavy loads. Practical operation of many years has proved that many faults will occur in...
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