Article
Engineering, Electrical & Electronic
Yang Wang, Xiao Ding, Lin-Man Zhang, Wei Shao, Bing-Zhong Wang
Summary: This article introduces an aperiodic wideband high isolation dual circularly polarized (CP) scanning array. A novel aperiodic array optimization method based on the perturbation principle is proposed, which solves the grating lobes problem and reduces the number of array elements, saving energy and reducing cost. The proposed array element has an impedance bandwidth of 58%, better than previous reports. The formed 16-element aperiodic array achieves a 2-D low side lobe level (SLL) with +/- 45 degrees beam scanning across the entire operating band, improving interference avoidance ability. Compared with a 25-element uniform array, 36% transmitter and receiver components are saved.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Kun Wang, Junping Geng, Han Zhou, Silei Yang, Rui Zhao, Jie Chen, Jingzheng Lu, Xudong Tang, Jing Zhang, Ronghong Jin
Summary: This paper proposes a novel low-profile phased antenna with dual-port and its two types of 1-D linear arrays, which have wide-angle beam scanning characteristics and the ability to switch states continuously.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Energy & Fuels
Yue Yao, Yue Ma, Chenpeng Wang, Hao Ye, Yinglong Liu, Jiawei Liu, Xiaobo Zhao, Tao Tao, Yingbang Yao, Shengguo Lu, Huazheng Yang, Bo Liang
Summary: A co-fuel channel microtubular solid oxide fuel/electrolysis cell is successfully fabricated with the addition of an insulating ceramic connector. The cell demonstrates effective operation at high temperature with specific current and voltage. The use of the co-fuel channel enhances the power generation while increasing power consumption, but the cell structure remains intact.
Article
Engineering, Electrical & Electronic
Jing Zhang, Junping Geng, Han Zhou, Chaofan Ren, Kun Wang, Silei Yang, Weinan Gao, Erwei Liu, Xuxu Cheng, Chong He, Xianling Liang, Ronghong Jin
Summary: A novel dual-port phase antenna is proposed for 2-D scanning, with the ability to switch between broadside and end-fire lobes. Linear arrays based on the antenna element and pattern multiplication principle show scanning angles and gains characteristics along different directions. The proposed antenna and methods can be extended to wide-angle scanning phased arrays.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Marine
WenChuang Chen, YongLiang Zhang, James Yang, HuiFeng Yu, SenDong Liang
Summary: A novel wave energy dissipator (WED) is proposed and studied through experiments and numerical simulations, showing significant effects of geometric factors on energy conversion and wave transmission.
Article
Chemistry, Inorganic & Nuclear
Wenda Qiu, Yunlei Tian, Shuting Lin, Aihua Lei, Zhangqi Geng, Kaitao Huang, Jiancong Chen, Fuchun Huang, Huajie Feng, Xihong Lu
Summary: This study presents a novel water-incorporation approach to design V2O5 anode with an extended interlayer gap, which improves the rate capacity and cycling performance of dual-ion batteries (DIBs). The water-incorporated V2O5 electrode shows enhanced specific capacity, rate property, and cycling stability. Furthermore, a DIBs device with fast kinetics was successfully assembled, indicating the potential of this design for high-rate and durable energy-storage devices.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Environmental Sciences
Jinli Fu, Shu Zhou, Xiaodan Wu, Sisi Tang, Pengfei Zhao, Kangling Tang, Yu Chen, Zhaoxia Yang, Zhaohui Zhang, Hongjun Chen
Summary: A down/up-conversion dual-excitation multi-emission fluorescence imprinted sensor was developed for dual-channel thiamphenicol (TAP) detection, exhibiting dual-channel fluorescence response and visible color change.
ENVIRONMENTAL POLLUTION
(2022)
Article
Chemistry, Physical
Anil Erdogan, Federico Capotondo, Alper Can Ince, Anke Hagen, C. Ozgur Colpan
Summary: The performance of a solid oxide fuel cell (SOFC) supplied with a reformate syngas mixture and equipped with anode off-gas recirculation is evaluated using energy and exergy analyses. A validated zero-dimensional mathematical model for SOFCs is developed and used to conduct parametric studies. The results demonstrate good agreement between the proposed model and experimental studies, with a maximum error of 6.8% at an operating temperature of 800°C. The effect of the anode off-gas recirculation ratio on SOFC performance is found to be negligible at low current densities, while the exergy destruction rate of the SOFC increases by 23.2% under high current density conditions when the fuel utilization ratio is increased from 0.75 to 0.95.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Electrical & Electronic
Peiyong Zhang, Yuquan Su, Yiwei Yang
Summary: This paper presents an ultralow power consumption and ultra-small area all-digital phase-locked loop (ADPLL) for SoC applications, featuring a dual-tuned DCO and locking algorithm. The experimental results demonstrate fast locking process and low power consumption with high performance.
CIRCUITS SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Engineering, Electrical & Electronic
Yuchen Gao, Wen Jiang, Wei Hu, Qian Wang, Wenwu Zhang, Shuxi Gong
Summary: The paper introduces a dual-polarized 2-D monopulse conical conformal antenna, which achieves stable high-gain endfire radiation with a novel array arrangement and dual-polarized monopulse comparator. The design concept combines dual-polarized 2-D monopulse array with conical conformal antenna for the first time, showing promising potential for target detection and tracking antennas in various aircraft applications.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Carl Pfeiffer, Jeffrey Massman, Thomas Steffen
Summary: This study presents the fabrication of Vivaldi arrays using commercial, low-cost 3-D metal printing technology, including the development of dual-polarized arrays on a triangular lattice. The new design is compared with traditional square lattice arrays, showing similar performance with simpler fabrication process.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Automation & Control Systems
Bruno Vilhena Adorno, Murilo Marques Marinho
Summary: Dual quaternion algebra has been widely studied in robotics for the past two decades, as it allows for clear definition of mathematical objects and useful geometric relationships between them. These algebraic tools are valuable for both modeling and control of robots.
IEEE ROBOTICS & AUTOMATION MAGAZINE
(2021)
Review
Chemistry, Physical
Chao Yang, Ran Guo, Xiuhui Jing, Ping Li, Jinliang Yuan, Yu Wu
Summary: This article provides a comprehensive review of degradation issues in reversible solid oxide cells (rSOCs), covering research on degradation in both single and dual modes, solution strategies for material development and optimization, and modeling work to predict degradation behaviors. The article emphasizes the connections and differences in degradation between single and dual modes, and proposes perspectives for improving reversibility and durability in long-term applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Agronomy
Federico Sanna, Giuseppe Campesi, Paola Deligios, Luigi Ledda, Giovanna Piluzza, Leonardo Sulas, Giovanni Antonio Re
Summary: Appropriate agroforestry practices can contribute to carbon sequestration and climate change mitigation. Different microenvironments have varying soil respiration rates, and changes in land use can affect soil organic carbon stocks.
EUROPEAN JOURNAL OF AGRONOMY
(2021)
Article
Engineering, Electrical & Electronic
Fanqi Sun, Yujian Li, Junhong Wang, Yuchen Ma, Lei Ge, Bo Ai, Ruisi He
Summary: A millimeter-wave high-gain dual-polarized antenna array with an enhanced bandwidth is introduced in this paper. The innovative use of an air-filled differential feeding cavity loaded with a short-ended cross-shaped waveguide allows for a compact design and wideband characteristics. By utilizing a commercial metallic 3-D printing facility, the proposed radiating elements, feeding cavities, and feed networks can be combined into a lightweight structure. The prototype of the 8 x 8 array operating in the Ka-band demonstrates wide bandwidth, high gain, and stable radiation patterns for polarization diversity applications.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Siwan Dong, Wentao Wang, Xingyuan Tong
Summary: This paper proposes a high gain and stability four-stage OTA for ADCs working under ultra-low supply voltage. By using linear transistor Q-factor modulation compensation and power-constrained slew-rate enhancement techniques, the response speed and stability of the designed four-stage amplifier have been greatly improved.
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Xingyuan Tong, Jinwu Wu, Dong Chen
Summary: This paper presents a four-phase delay-locked loop (DLL) with low phase error, low power consumption, and small area for time-to-digital conversion application. A highly matched single-ended differential single-ended voltage-controlled delay line is proposed to improve the phase uniformity of the multiple output signals. Additionally, a digital auxiliary duty-cycle corrector is designed to adjust the width of the output signal and reduce the pulse width error.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2022)
Article
Engineering, Electrical & Electronic
Xin Xin, Yuanhao Hu, Jueping Cai, Siwan Dong, Xingyuan Tong
Summary: This paper proposes a low-supply, nano-watt level CMOS-only voltage reference for the internet-of-things, wireless sensor networks, and implantable biomedical chips. By utilizing the threshold voltage difference between thick-gate transistors and thin-gate transistors, the threshold voltage fluctuation caused by process variation can be suppressed. The circuit branches and supply voltage are significantly decreased compared with previous designs, allowing for low power design.
CIRCUITS SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Engineering, Electrical & Electronic
Xingyuan Tong, Shimei Zhao, Xin Xin
Summary: A high energy efficiency and linearity switching scheme is proposed for the SAR ADC. The proposed scheme reduces the capacitor area by 75% compared to the conventional scheme and improves linearity and energy efficiency using the MSB splitting method and monotonic switching scheme. The simulation results demonstrate significant reductions in switching energy and capacitor area, as well as enhanced linearity.
CIRCUITS SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Engineering, Electrical & Electronic
Xingyuan Tong, Wei Jin, Chunming Zhang, Xin Xin, Siwan Dong, Qinqin Li
Summary: This paper presents a 0.6V 12-bit SAR ADC which achieves lower dead zone voltage and eliminates uncertain decision-making behavior through the use of a latch-like phase detector and low power metastability immunity technique. Simulation results demonstrate its excellent performance in terms of high signal-to-noise and distortion ratio, low power consumption, and favorable figure-of-merit. Additionally, the proposed design offers advantages in terms of core area.
MICROELECTRONICS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Kaiqiang Zhang, Xingyuan Tong
Summary: This paper proposes a coarse-fine tuning technique for DLDO regulators, along with the use of analog enhancement (AE) operation to reduce overshoot/undershoot voltage and enable low-voltage operation.
CIRCUITS SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Engineering, Electrical & Electronic
Xingyuan Tong, Yuming Wei, Wen Mao, Xin Xin
Summary: The study introduces a fixed-window level-crossing analog-to-digital converter (LC-ADC) for biomedical electronics, which requires only one continuous-time comparator, significantly reducing power consumption compared to traditional designs. A simplified digital detection circuit is proposed to monitor the changing direction of the folded signal, leading to considerable power savings.
MICROELECTRONICS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Siwan Dong, Sen Bu, Xingyuan Tong
Summary: This paper proposes a dual-mode low-dropout regulator with a wide input/output voltage range and high-power supply rejection ratio. The regulator can operate in high-voltage mode and low-voltage mode, ensuring stable performance. The proposed design also utilizes a compensation method and a buffer to improve linearity and load regulation performance.
CIRCUITS SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Computer Science, Hardware & Architecture
Xingyuan Tong, Dong Liu, Ronghua Wang
Summary: This article presents a DAC design with three unary bits, five splitting bits, and four binary bits, which optimizes the performance and reduces the area through decoding method and data-transmission topology.
IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS
(2022)
Article
Engineering, Electrical & Electronic
Xingyuan Tong, Hui Guo, Xin Xin, Chang Zhang, Yuanhao Hu
Summary: This paper proposes a 14-bit successive-approximation-register analog-to-digital converter for intelligent sensing applications. It adopts a redundant integer sub-radix-2 capacitor array to recover the conversion errors and mitigates the capacitor mismatch with digital background calibration. Unlike previous calibration methods that require two ADC channels, this approach only needs a single ADC, resulting in a significant area reduction.
MICROELECTRONICS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Siwan Dong, Jiaqi Li, Sen Bu, Changxiang Liu, Xingyuan Tong
Summary: This paper proposes a ultra-low power voltage reference design suitable for wireless sensor network applications, featuring high stability, low power consumption, low line sensitivity, and high power supply reject ratio. Through innovative structure and design, accurate correction of reference voltage and temperature coefficient across wide temperature ranges can be achieved, with fast start-up time.
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Xingyuan Tong, Dong Liu
Summary: The article introduces a current-steering digital-to-analog converter (DAC) with 4-bit splitting + 8-bit binary segmented topology, which utilizes splitting decoding and DEM technique to optimize the performance of the DAC and improve the dynamic range.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2022)
Article
Engineering, Electrical & Electronic
Dong Chen, Zheng Hao, Xueliang Li, Jintao Liang, Xingyuan Tong
Summary: A method of trench bottom optical isolation is developed to suppress the crosstalk in light-addressable potentiometric sensor. The method narrows the diffusion scope of photocarriers using the trench structure and irradiates the trench bottom by isolation light to locally suppress the crosstalk.
IEEE SENSORS JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Xin Xin, Linxiao Shen, Xiyuan Tang, Yi Shen, Jueping Cai, Xingyuan Tong, Nan Sun
Summary: This paper presents a 13-tap FIR filter and an IIR filter embedded in a 10-bit SAR ADC for wireless communications chip. The IIR filter is realized by reusing the capacitor array of the SAR ADC, improving stopband suppression and shaping the transition band while avoiding DC attenuation. The SAR ADC's sampling rate loss is compensated by 4x time-interleaving technology.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2023)
Article
Engineering, Electrical & Electronic
Dong Chen, Zheng Hao, Xueliang Li, Xingyuan Tong
Summary: A measurement method with impedance conversion is proposed to enhance the measured sensitivity and repeatability of the EISCAP. By inserting an impedance conversion stage in front of the transimpedance amplifier, the fluctuation of the impedance of the solution and reference electrode is suppressed, improving measurement repeatability. At the same time, the capacitance of the sensor has been significantly amplified, leading to improved sensitivity.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
