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2023 Optical Fiber Communications Conference and Exhibition, OFC 2023

作者： Bahmanian, Meysam Fard, Saeed Scheytt, Christoph Paderborn University System and Circuit Technology Group Heinz Nixdorf Institute Paderborn Germany

ISBN: (纸本)9781957171180

In this demo we show an ultra-low phase noise optoelectronic PLL (OEPLL) based on optical clock source. The output signal of this type of PLL is in the electrical domain and its reference oscillator, typically a mode-locked laser, operates in the optical domain. The OEPLL has a frequency range of 2-20 GHz. The OEPLL has an in-band phase noise of below -150 dBc/Hz at 100-kHz offset frequency for a carrier frequency of 10 GHz. This phase noise level is 10-20 dB better than state-of-the-art commercial frequency synthesizers. © 2023 The Author(s).

关键词： Phase locked loops

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GNSS/SINS tight combination navigation technology for multirotor UAV 3

GNSS/SINS tight combination navigation technology for multir...

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2024 3rd International Conference on Aerospace and Control Engineering, ICoACE 2024

作者： Yang, Jianlei Jin, Zhengzhen Zheng, Shuaiyong Jin, Yaohaoran Hu, Na Zhao, Lili Key Laboratory of Satellite Navigation System and Equipment Technology Shijiazhuang050081 China The 54 Research Institute China Electronics Technology Group Shijiazhuang050081 China School of Integrated Circuit Science and Engineering Tianjin University of Technology Tianjin300384 China

Amidst the swift progress in unmanned aerial vehicle (UAV) technology, the enhancement of navigation precision and robustness is paramount for ensuring flight safety and managing the intricacies of various missions. This research presents a sophisticated, tightly integrated Global Navigation Satellite system (GNSS) and Strapdown Inertial Navigation system (SINS) navigation framework designed to synergize the capabilities of both systems, thereby mitigating their respective shortcomings in adverse environments. By utilizing an Extended Kalman Filter for the real-time calibration of inertial sensor errors, this system markedly enhances the navigation accuracy of UAVs. Our rigorous testing, conducted with genuine flight data, revealed that the integrated system surpasses standalone inertial navigation systems, especially in managing position errors, resulting in a 12.5% enhancement in overall navigation accuracy. This study solidifies the technical foundation for UAV applications and advances the development of future navigation systems. © 2025 Institute of Physics Publishing. All rights reserved.

关键词： Unmanned aerial vehicles (UAV)

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Design and Implementation of Configurable UART with Self-Test Function 5

Design and Implementation of Configurable UART with Self-Tes...

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5th International Conference on Electronic Engineering and Informatics, EEI 2023

作者： Zhang, Yuelun Yu, Zongguang Yang, Xiaogang China Electronics Technology Group Corporation No.58 Research Institute Wuxi China China Key System & Integrated Circuit Co. Ltd Wuxi China

ISBN: (纸本)9798350327076

Universal Asynchronous Receiver/Transmitter, commonly known as UART, is a configurable single-bit serial transmit and receive communication interface, which supports various baud rates, optional 5-8 bits of data length, parity check and optional 1-2 bits of stop bit. With the rapid development of MCU in the field of automotive electronics, the MCU that meets the requirements of vehicle regulations should have high reliability and efficient fault detection, and the application of the self-test function in UART can effectively improve the reliability and detection efficiency. The design is based on the self-test function and UART protocol design, using finite machine control timing, allowing the self-test controller to complete the self-test without manual configuration after receiving the self-test signal. The RTL of the UART and the self-test function are developed in Verilog, and the simulation verification is done in NCVerilog. © 2023 IEEE.

关键词： Microcontrollers

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A Wide-Band GaN Power Amplifier with Negative Feedback 6

A Wide-Band GaN Power Amplifier with Negative Feedback

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6th IEEE International Conference on Computer and Communication Engineering technology, CCET 2023

作者： Fan, Yimeng Guo, YueWei Duan, Lei The 13th Research Institute China Electronics Technology Group Shijiazhuang China Bowei Integrated Circuits Company Ltd Circuit and System Department Shijiazhuang China

ISBN: (纸本)9798350340686

A two-stage common source wideband power amplifier with negative feedback network is presented in this paper. The design uses a negative feedback structure to improve the bandwidth and stability, and the matching network is also designed elaborately to meet the broadband requirements. The theoretical analysis of broadband design based on the parasitic effect of transistors is introduced and carried out in details in the paper. The bandwidth expanding technique with negative feedback structure are also analyzed. The dedicated theory analysis method is different from the impedance matrix theoretical wideband analysis in other designs. The proposed power amplifier designed based on a 0.25μm GaN process, has a saturated output power greater than 26dBm in the 8GHz-18GHz wide operating band, a maximum dynamic current of less than 149mA, and has a compact size of 1.7mm×1.1mm. © 2023 IEEE.

关键词： Monolithic microwave integrated circuits

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Nonlinear Noise Mechanisms in Active Devices: Additive Amplitude Noise and Phase Noise

arXiv

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arXiv 2024年

作者： Bahmanian, Meysam System and Circuit Technology Group Heinz Nixdorf Institute Paderborn University Paderborn33102 Germany

In this report, we lay the foundation for amplitude noise and phase noise analysis in nonlinear devices. We build a theoretical framework that helps us to analyze extremely difficult problems which include both nonlinearity and noise of semiconductors. Using our proposed framework, we analytically calculate the amplitude noise and phase noise of nonlinear RC circuits in the presence of nonlinear capacitance and conductance. As a more practical example, we analyze the amplitude noise and phase noise of a common-emitter stage bipolar transistor. © 2024, CC BY-NC-ND.

关键词： Phase noise

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Design and analysis of GPS satellite-based augmentation system based on low earth orbit constellations 3

Design and analysis of GPS satellite-based augmentation syst...

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2024 3rd International Conference on Aerospace and Control Engineering, ICoACE 2024

作者： Yang, Jianlei Jin, Zhengzhen Zheng, Shuaiyong Huang, Shiyong Ma, Guoyu Ji, Shiran Key Laboratory of Satellite Navigation System and Equipment Technology Shijiazhuang050081 China The 54 Research Institute China Electronics Technology Group Shijiazhuang050081 China School of Integrated Circuit Science and Engineering Tianjin University of Technology Tianjin300384 China College of Software Tianjin Normal University Tianjin300387 China

Addressing the need for improved GPS accuracy, especially for low-dynamic users, this study introduces a GPS augmentation system employing Low Earth Orbit (LEO) satellites. We detail the principles of satellite navigation and augmentation and simulate the GPS-LEO constellation to analyse its performance in terms of satellite visibility and Position Dilution of Precision (PDOP). The results demonstrate substantial augmentation in navigation accuracy with the integrated system, as verified by UAV flight experiments. The integration of LEO satellites is anticipated to advance global navigation capabilities, with implications for intelligent transportation, logistics, and precision agriculture. © 2025 Institute of Physics Publishing. All rights reserved.

关键词： Global positioning system

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Design of low-weight, small-size and high-efficiency equalization circuits based on switched-capacitors 4

Design of low-weight, small-size and high-efficiency equaliz...

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2022 4th International Conference on Electronic Engineering and Informatics, EEI 2022

作者： Ding, Yanhong Zhao, Xin Li, Kun Liu, Qing Shi, Gengxin School of Integrated Circuit Science and Engineering Tianjin University of Technology Tianjin China Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control Tianjin University of Technology Tianjin China China Electronics Technology Group Corporation Tianjin China

ISBN: (纸本)9783800759231

An any cell to any cell equalization circuit, which is based on switched capacitors and energy bus, is proposed in this paper. In this equalization topology, any high voltage cell can directly transfer the power to any low voltage cell through energy bus. With the increasing miniaturisation and integration of circuit boards, the topology proposed in this paper reduces the size of the circuit by varying the capacitance and frequency in order to further reduce the area and weight of the circuit. At the same time compared with the equalization circuit using transformers or inductance devices, this circuit has the characteristics of low cost, low-weight, small-size, easy integration and simple control scheme and it is suitable for applictions such as aerospace and unmanned aerial vehicles. The feasibility of the circuit topology is verified by formula demonstration and simulation results. © VDE VERLAG GMBH ∙ Berlin ∙ Offenbach.

关键词： Cells

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Flexible Time-Domain De-Multiplexing of Nyquist OTDM Channels by Orthogonal Sampling in Silicon Photonics

Flexible Time-Domain De-Multiplexing of Nyquist OTDM Channel...

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CLEO: Science and Innovations, S and I 2022

作者： Misra, Arijit Singh, Karanveer Meier, Janosch Kress, Christian Schwabe, Tobias Preussler, Stefan Scheytt, J. Christoph Schneider, Thomas THz Photonics Group Technische Universität Braunschweig Schleinitzstraße 22 Braunschweig38106 Germany Paderborn University System and Circuit Technology Heinz Nixdorf Institute Fürstenalle 11 Paderborn33098 Germany

We report for the first time, inter-symbol-interference (ISI) free demultiplexing of Nyquist optical time division multiplexed (OTDM) signals using a reconfigurable orthogonal sinc-pulse sampling enabled by silicon ph... 详细信息

ISBN: (纸本)9781557528209

关键词： Silicon photonics

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Design and Implementation of Configurable UART with Self-Test Function

Design and Implementation of Configurable UART with Self-Tes...

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International Conference on Electronic Engineering and Informatics (EEI)

作者： Yuelun Zhang Zongguang Yu Xiaogang Yang China Electronics Technology Group Corporation No.58 Research Institute Wuxi China China Key System & Integrated Circuit Co. Ltd Wuxi China

Universal Asynchronous Receiver/Transmitter, commonly known as UART, is a configurable single-bit serial transmit and receive communication interface, which supports various baud rates, optional 5–8 bits of data length, parity check and optional 1–2 bits of stop bit. With the rapid development of MCU in the field of automotive electronics, the MCU that meets the requirements of vehicle regulations should have high reliability and efficient fault detection, and the application of the self-test function in UART can effectively improve the reliability and detection efficiency. The design is based on the self-test function and UART protocol design, using finite machine control timing, allowing the self-test controller to complete the self-test without manual configuration after receiving the self-test signal. The RTL of the UART and the self-test function are developed in Verilog, and the simulation verification is done in NCVerilog.

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A Wide-Band GaN Power Amplifier with Negative Feedback

A Wide-Band GaN Power Amplifier with Negative Feedback

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IEEE International Conference on Computer and Communication Engineering technology (CCET)

作者： Yimeng Fan YueWei Guo Lei Duan The 13th Research Institute China Electronics Technology Group Shijiazhuang China Circuit and System Department Bowei Integrated Circuits Company Ltd Shijiazhuang China

A two-stage common source wideband power amplifier with negative feedback network is presented in this paper. The design uses a negative feedback structure to improve the bandwidth and stability, and the matching network is also designed elaborately to meet the broadband requirements. The theoretical analysis of broadband design based on the parasitic effect of transistors is introduced and carried out in details in the paper. The bandwidth expanding technique with negative feedback structure are also analyzed. The dedicated theory analysis method is different from the impedance matrix theoretical wideband analysis in other designs. The proposed power amplifier designed based on a 0.25µm GaN process, has a saturated output power greater than 26dBm in the 8GHz-18GHz wide operating band, a maximum dynamic current of less than 149mA, and has a compact size of 1.7mm×1.1mm.

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