A fully-active low-noise amplifier (LNA) for ultrawideband application is presented. Passive on-chip inductor of conventional LNA design is replaced by low-noise active inductor, significantly reducing the total chip area of the proposed CMOS LNA. The core LNA circuit is a cascoded common-source amplifier loaded with an active inductor. Two buffer stages are used to provide the required input a...

Analytic first derivative expression of opposite-spin (OS) ansatz adapted quartic scaling doubly hybrid XYGJ-OS functional is derived and implemented into Q-Chem. The resulting algorithm scales quartically with system size as in OS-MP2 gradient, by utilizing the combination of Laplace transformation and density fitting technique. The performance of XYGJ-OS geometry optimization is assessed by c...

This paper presents the design and experimental results of a miniaturized monolithic 2.4/5.7 GHz concurrent dual-band low noise amplifier with cascade configuration using InGaP/GaAs HBT technology for the first time. The first stage of the LNA provides high gain and input matching simultaneously at both 2.4 GHz and 5.7 GHz bands. The output matching of the second stage is realized by shunt-shun...

Trichalcogenide semiconductors could provide a platform for quasi-one-dimensional electronic devices, on condition that their tunable doping capability is established. This work presents synthetic strategy towards degenerately doped titanium trisulfide nanostructures feature ultralow carrier activation barriers and exceptional ambient stability. The anomalous electrical conductivity of the synt...

Nuclear import usually relies on the presence of nuclear localization sequences (NLSs). NLSs are recognized by NLS receptors (importins), which target their substrates to the nuclear pore. We identified the NLSs of the yeast ribosomal proteins S22 and S25 and studied the former by mutational analysis. Furthermore, in S25 the nucleolar targeting information was found to overlap with its NLS. Com...

Accurate MP2 and CCSD(T) complete basis set (CBS) interaction energy curves (14 points for each curve) have been obtained for 20 of the dimers reported in the S22 set and analytical Morse curves have been fitted that can be used in developing updated density functional theory (DFT) and force field models. The magnitude and the effect of the basis set superposition error (BSSE) were carefully in...

We propose a germanium-on-silicon photodetector with bilateral mode-evolution-based coupler. Based on the double-sided mode-evolution, light illuminates whole Ge absorption region uniformly, which alleviates space-charge effects and decreases saturation effects. The simulated results show 53% more photocurrent generation than 19 times opto-electrical bandwidth conventional butt-coupled photodet...