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This paper presents a novel ultra low jitter phase‐locked loop (PLL) circuit architecture for RF Sampling Transceiver. The programmable frequency divider with duty cycle expansion and the new phase frequency detector and charge pump circuit are used to solve the problem of voltage domain conversion of narrow pulses in the traditional high‐performance charge pump PLL structure. The traditional structure degrades charge pump linearity and noise, thus deteriorating overall jitter performance. Furthermore, voltage‐controlled oscillator uses the dual core structure and the second harmonic suppression technology, combined with the proposed new switching capacitor structure, and achieves −139.3 dBc/Hz phase noise at the 1 MHz frequency offset of the 5.2 GHz carrier under the open loop state. The PLL implemented in a standard Taiwan Semiconductor Manufacturing Company 28 nm process occupies a core area of 0.4 mm2 and generates a frequency ranging from 4 to 5.2 GHz using 50 MHz oscillator input, the power consumption is 40 mW. It achieves 74.8 fs root‐mean‐square jitter integrated from 10 KHz to 30 MHz. When the PLL output is divided by 2, the output phase noise at 1 MHz frequency offset is −125.75 dBc/Hz, and the PLL FoM is −246. [ABSTRACT FROM AUTHOR]

The article focuses on a geological research related to formation of pyrites and their thermoelectric coefficient in the Mengqiguer uranium deposit of the Yili Basin in China. Topics discussed include relation of thermoelectric coefficient of pyrites with trace elements, supersaturation of iron element in high temperature pyrites and division of pyrites formation in Mengqiguer uranium deposit include relation with uranium ore formation and possibility of hot water activity in mineralization.

The article focuses on a research on coupling relationship between sandstone type uranium mineralization and yili basin sedimentary and evolution of the Tianshan tectonic belt in China. It discusses the identification of five age periods through Apatite Fission Track dating suggesting uprising-erosion events in the area. It also reports on sedimentary sequences and unconformities in the basin suggesting extension during the Carboniferous and Permian period and shrinking period during Triassic.

The article focuses on a study of genesis regarding strong Kaolinization of Ore-bearing Sandstone in the uranium deposit of Mengqiguer in China. Topics discussed include Mengqiguer deposit suffering from clay alteration, the presence of crystal morphology in the kaolinite formed during burial process, and decarboxylation of the organic matter in rocks.

The article discusses a study on fluid of Mengqiguer uranium deposit in China. It mentions that fluid inclusions located in quartz fragment fracture contain liquid brine and hydrocarbon-containing aqueous solution. It states that vitrinite reflectance on organic matter in sand bodies is ranged from 0.40 percent to 0.74 percent. It also mentions that ore-forming fluid consists of mineral water containing oxygen and uranium and reducing hydrocarbon.