A pair of scalable models, one utilizing the Surface Potential-based HiSIM-HV 1.0.2 model, and the other, the conventional Vth-based BSIM3v3.24 model, were extracted based on a test vehicle designed with both Drain-Extended CMOS and LDMOS Transistors. All devices were designed with a single fixed channel length but varying drift length and width. The test vehicle is processed using Fairchild Se...

This article presents an application-specific integrated circuit (ASIC) designed for intra-vascular ultrasound imaging that interfaces 64 piezoelectric transducer elements to system using a single micro-coaxial cable. Thus, it allows single-element be replaced by array enable 3-D imaging. The 1.5-mm-diameter ASIC is intended mounted at the tip of catheter, directly with 2-D elements. For each t...

This paper demonstrates a k-band low insertion loss variation phase shifter with over 330∘continuously phase tuning range from 21-25GHz in standard 0.18-μm CMOS technology. This phase shifter is composed of a 180 ∘ continuously phase tuning range reflection type phase shifter (RTPS) and a 180∘discrete switch type phase shifter (STPS). The measured phase shift range is 336∘with low loss variatio...

BACKGROUND Hemorrhagic fever with renal syndrome (HFRS) is an important infectious disease in Hebei Province. At present, cases from the northeast regions of the province account for >80% of the total incidences. However, studies that examine the region-specific genetic variations of the Hantavirus (HV), the causative pathogen for HFRS, have been lacking. METHODS Rodents were collected in nor...

BACKGROUND Mycoplasma hyopneumoniae is the causative agent of enzootic pneumonia and is responsible for significant economic losses to the pig industry. To better understand the mode of action of a commercial, adjuvanted, inactivated whole cell vaccine and the influence of diversity on the efficacy of vaccination, we investigated samples from vaccinated and non-vaccinated pigs experimentally in...

In this paper, an optimal and robust design method to implement a two-chip out-of-plane microaccelerometer system is presented. The two-chip microsystem consists of a MEMS chip for sensing the external acceleration and a CMOS chip for signal processing. An optimized design method to determine the device thickness, the sacrificial gap, and the vertical gap length of the M EMS sensing element is ...

We compared the output of the Santa Barbara microwave canopy backscatter model to polarimetric synthetic aperture radar ( S A R ) data for three ponderosa pine stands (ST2, ST-11, and SP-2) with discontinuous tree canopies near Mt. Shasta, California, at P-band (0.68-m wavelength), L-band (0.235m wavelength), and C-band (0.056-m wavelength). Given the SAR data calibration uncertainty, the model...