Searched for: subject%3A%22dynamic%255C+range%22
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document
Wu, Keyu (author)
Class-D amplifiers have gained popularity for their high-power efficiency, exceeding 90%. Among them, digital-input Class-D amplifiers stand out due to their superior integration and increased immunity to electromagnetic interference (EMI). This project introduces a high-performance digital-input Class-D amplifier, aiming for a dynamic range...
master thesis 2023
document
Zhang, Remy (author)
Bidirectional neural recording ICs faces the challenge of simultaneous stimulation and recording. The recording IC should endure large stimulation artifacts while capturing weak neural signals excited by the stimuli. The stimulation artifacts can be as large as hundreds of millivolts, which can saturate the recording front end. Conventional...
master thesis 2023
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Liu, Tianyi (author)
Transcranial Doppler ultrasound imaging is a crucial tool for both clinical and research applications. Despite its significance, its utility is constrained by the dynamic range limitations of the receiver system. Traditional methods, relying on high-dynamic-range front-end amplifiers and high-resolution ADCs, are often inefficient. These methods...
master thesis 2023
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Zhang, H. (author), Berkhout, Marco (author), Makinwa, K.A.A. (author), Fan, Q. (author)
This article presents a class-D amplifier (CDA) with high dynamic range (DR). To eliminate the typically dominant noise contribution of a resistive feedback network, the input and feedback signals are chopped and applied to a capacitive feedback network. However, this leads to high-voltage (HV) transients at the input of the loop filter,...
journal article 2022
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Brembilla, E. (author), Drosou, N. C. (author), Mardaljevic, J. (author)
Climate-Based Daylight Modelling (CBDM) methods have been validated against long-term measurements in laboratory settings and found to exhibit errors small enough to make such assessments useful for daylight performance prediction. However, real occupied spaces are affected by a higher number of uncertainties than laboratory or controlled...
journal article 2022
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Vogel, Ricardo (author)
We present a technique for enhancing high-dynamic-range tone mapping algorithms by adding the bloom effect to bright areas. Bloom is based on the fact that real-life lenses convolve light and make bright areas emit a glow. The algorithm takes a set of images with different exposures as input, and performs a tone mapping algorithm on these. It...
bachelor thesis 2021
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Padmanabhan, P. (author), Zhang, C. (author), Charbon-Iwasaki-Charbon, E. (author)
Direct time-of-flight (DTOF) is a prominent depth sensing method in light detection and ranging (LiDAR) applications. Single-photon avalanche diode (SPAD) arrays integrated in DTOF sensors have demonstrated excellent ranging and 3D imaging capabilities, making them promising candidates for LiDARs. However, high background noise due to solar...
journal article 2019
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Ge, X. (author), Theuwissen, A.J.P.A.M. (author)
This paper presents a temporal noise analysis of charge-domain sampling readout circuits for Complementary Metal-Oxide Semiconductor (CMOS) image sensors. In order to address the trade-off between the low input-referred noise and high dynamic range, a Gm-cell-based pixel together with a charge-domain correlated-double sampling (CDS) technique...
journal article 2018
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Karmakar, S. (author), Gonen, B. (author), Sebastiano, F. (author), Van Veldhoven, Robert (author), Makinwa, K.A.A. (author)
Micro-power ADCs with high linearity and dynamic range (DR) are required in several applications, such as smart sensors, biomedical imaging, and portable instrumentation. Since the signals of interest are then often small (tens of μν) and slow (<1kHz BW), such ADCs should also exhibit low offset and flicker noise. Noise-shaping SAR [1] and...
conference paper 2018
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Gonen, B. (author), Sebastiano, F. (author), Quan, Rui (author), van Veldhoven, Robert (author), Makinwa, K.A.A. (author)
This paper presents the first dynamic zoom ADC. Intended for audio applications, it achieves 109-dB DR, 106-dB signal-to-noise ratio, and 103-dB SNDR in a 20-kHz bandwidth, while dissipating only 1.12 mW. This translates into the state-of-the-art energy efficiency as expressed by a Schreier FoM of 181.5 dB. It also achieves the state-of-the...
journal article 2017
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Zhang, R. (author)
This thesis presents a 1-Mega pixels high-dynamic range and UV sensitive image sensor in 0.18 µm technology with 14-bit interleaved 64Ms/s SAR ADC. It can achieve 64 fps and 101 dB dynamic range. The pixel array contains three kinds of pixel: UV pixel, visible pixel and low blue pixel. Those three kinds of pixel form a special 4×4 kernel to meet...
master thesis 2015
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Zhu, J. (author)
This thesis presents the design of a stitched, high-dynamic range particle sensor in 0.18 µm technology, which has three different configurations of 4096*4096 (4K), 8192*8192 (8K) and 12288*12288 (12K) pixels. It can be operated at 65 MHz with a target of 5 e- RMS noise and 92 dB dynamic range. The architecture of the whole sensor is explained...
master thesis 2014
document
Marchetti, M. (author)
This thesis concentrates on the development of advanced large-signal measurement and characterization tools to support technology development, model extraction and validation, and power amplifier (PA) designs that address the newly introduced third and fourth generation (3G and 4G) wideband communication standards. By exploiting an innovative...
doctoral thesis 2013
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Saha, A. (author)
The motivation behind this thesis is that cardio-vascular diseases claim the highest number of lives each year globally. In order to enhance the accuracy in diagnosis, construction of 3D images of the heart is required. From these images, precise information can be obtained regarding the 3D anatomy of the heart and its functioning. Trans...
master thesis 2013
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Kamath, U.R. (author)
Glucose sensors are useful for monitoring and control of blood-sugar concentration for diabetic patients. There are many challenges in their wide-spread use and effectiveness in control of the disease. This work is a step towards achieving in vivo continuous long-term glucose monitoring using the optical near-infrared based glucose sensing...
master thesis 2012
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Liu, Y. (author)
This thesis presents the design of a dual-transfer-gate high dynamic range CMOS image sensor. Several methods that can be applied to extend the dynamic range have been developed. However, all of these solutions have undesired problems, such as nonlinearity response, higher dark current shot noise and discontinues signal-to-noise ratio. In this...
master thesis 2012
document
Ma, C. (author)
This thesis presents the design of a pixel level analog-to-digital converter (ADC) circuit for hybrid CMOS image sensors. There are several methods to increase the dynamic range of the sensor through the readout algorithm. The multiple sampling method can increase the dynamic range (DR) without a loss of signal-to-noise ratio (SNR). The idea is...
master thesis 2010
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Huang, C. (author)
With the evolution of wireless communication, varactors can play an important role in enabling adaptive transceivers as well as phase-diversity systems. This thesis presents various varactor diode-based circuit topologies that facilitate RF adaptivity. The proposed varactor configurations can act as variable capacitors with high tuning range,...
doctoral thesis 2010
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Yang, F. (author), Sbaiz, L. (author), Charbon, E. (author), Susstrunk, S. (author), Vetterli, M. (author)
conference paper 2010
document
van der Heijden, M.P. (author)
This thesis presents circuit- and device-level linearization techniques to reduce the intermodulation distortion as well as the DC power consumption in RF amplifier circuits. As a key method to accomplish the research goals presented in Chapter 1, a so-called orthogonal design approach is introduced that allows for an uncompromised optimization...
doctoral thesis 2005
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