A5101714942- Advanced Semiconductor Detectors and Materials
- Radiation Detection and Scintillator Technologies
- Particle Detector Development and Performance
- Advanced X-ray and CT Imaging
- Medical Imaging Techniques and Applications
- Infrared Target Detection Methodologies
- AI and Multimedia in Education
- Water Quality Monitoring Technologies
Northwestern Polytechnical University
2012-2016
Institute of Microelectronics
2014-2016
In this paper, we present the design and preliminary results of a novel low-noise front-end readout application-specific integrated circuit (ASIC) for PET imaging system whose objective is to achieve following performances: spatial resolution 1 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> , detection efficiency 15% time ns. A cascode amplifier based on PMOS input transistor selected realize charge-sensitive (CSA) sake good noise...
In this paper, we present the design and performances of a low-noise radiation-hardened front-end readout application specific integrated circuit (ASIC) dedicated to CdZnTe detectors for hard X-ray imager in space applications. The channel is comprised charge sensitive amplifier, CR-RC shaping an analog output buffer, fast shaper, discriminator. An 8-channel prototype ASIC designed fabricated TSMC 0.35-μm mixed-signal CMOS technology, die size chip 2.2 × mm2. input energy range from 5 350...
In this paper, we report on the recent development of a 32-channel low-noise front-end readout ASIC for cadmium zinc telluride (CdZnTe) X-ray and <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">$\gamma $</tex></formula> -ray detectors. Each channel includes charge sensitive amplifier, CR-RC shaping amplifier an analog output buffer. The is implemented using TSMC Notation="TeX">$0.35 - \mu...
In this paper, we present a novel data acquisition scheme based on low-noise front-end readout ASIC and high speed ADC for PET imaging systems cadmium zinc telluride (CZT) detectors. A charge-sensitive amplifier(CSA), pulse shaper driving buffer are integrated each CZT detector pixel. The specifications of the dependent dimension detector. Eight shaping voltages sampled digitized. from is collected by programmable FPGA which can run an algorithm to calculate peak value shaped trigging timing...
In this paper, the design of a novel low-noise front-end readout circuit for Cadmium zinc telluride (CdZnTe) X-ray and γ-ray detectors is described. The circuits include charge sensitive amplifier (CSA) CR-RC shaper implemented in TSMC 0.35 μm mixed-signal CMOS technology. die size prototype chip 4.9 mm × 2.2 mm. simulation results show that, noise performance 46 electrons + 10 electrons/pF, power consumption 1.65 mW per channel.
In order to solve the shortcomings of landslide monitoring technology method, a set landslides and early warning system is designed. It can achieve real-time sensor data acquisition, remote transmission query display. addition, aiming at harsh environment performance requirements system, an improved minimum hop routing protocol proposed. reduce network energy consumption, enhance robustness, improve node layout networking flexibility. realize data, GPRS wireless communication used transmit...
This paper describes a low-noise front-end readout circuit for CZT detectors based on TSMC 0.35 um mixed-single CMOS technology; mainly analyzes the noise model of detector-preamplifier and presents schematic charge sensitive preamplifier shaper. Considering parasitical influences, layout-design are optimized to reduce noise. The preliminary simulation results show that, equivalent (ENC) is 74 e﹣ (rms), slope 9 e﹣/pF, power consumption 2 mW, non-linearity
In this paper, we report on the recent development of a 64-channel low-noise front-end readout ASIC for cadmium zinc telluride detectors aimed to X-ray and γ-ray imaging systems. There are 64 channels 2 test in ASIC. The is implemented TSMC 0.35-μm mixed-signal CMOS technology, die size prototype chip 2.7 mm × 8.0 mm. At room temperature, equivalent noise charge typical channel reaches 66 e <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-</sup>...