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This paper presents a 20b clockless DAC designed for precision calibrated systems. The architecture is a 6b parallel resistor voltage divider with a 14b R-2R subDAC. This architecture is inherently good for noise and temperature stability. Major causes of nonlinearity are discussed. A single current-output calibration DAC corrects for both random resistor mismatch and systematic resistor nonlinearity...
Visual domain adaptation addresses the problem of adapting the sample distribution of the source domain to the target domain, where the recognition task is intended but the data distributions are different. In this paper, we present a low-rank reconstruction method to reduce the domain distribution disparity. Specifically, we transform the visual samples in the source domain into an intermediate representation...
In this work, a 3–5 GHz CMOS UWB RF receiver front-end design is described. The design was realized using integrated passive device (IPD) package format as system-in-package (SiP) application. The CMOS circuit consists of a fully differential common gate-low noise amplifier (CG-LNA), an IQ downconversion mixer, and a variable gain amplifier. Three low loss IPD transformer baluns are used to convert...
The Genisys preclinical PET imaging system suffers from relatively poor spatial resolution and reconstruction artifacts in the sagittal and transaxial planes due to limited angular sampling. This prevents reliable quantification and delineation of organs and tumors in close proximity. The use of factor analysis (FA) is proposed as a method to mitigate this effect by separation of structures into "factor"...
State-of-the-art automatic speech recognition systems typically adopt the feature set containing mel-frequency cepstral coefficients (MFCC) and their time derivatives. The noise vulnerability of MFCC significantly degrades the recognition performance of such systems in noisy conditions. This paper describes a noise-robust feature extraction method. A set of new MFCC features is derived from the dynamic...
We report a robust Q-band GaN MMIC LNA operating in the 42-47GHz frequency range using a 0.15 mum T-gate process. The measured noise figure of the MMIC is less than 3.1 dB over the band of interest and the NF has a minimum of 2.9 dB at a frequency of 45.5 GHz. The MMIC gain is between 19 and 20 dB across the band and the input return loss of the MMIC is less than -10 dB. The measured OIP3 of the MMIC...
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