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18th International SoC Design Conference (ISOCC)

作者： Dangba, Hanh Bui-ngoc, Thang Kim, Hae-jin Song, Jun-hee Chung, Chaiyoon Byun, Gyung-Su Inha Univ Sch Informat & Commun Engn Incheon 22212 South Korea

ISBN: (纸本)9781665401746

This paper presents a sub-THz wireless data transfer (WDT) design for low-power chip-to-chip communication using on-off keying (OOK) modulation scheme. Input baseband data is modulated with a 90-GHz clock signal, which is generated by the proposed near-threshold voltage-controlled oscillator. The modulated signal is transferred through an air media by using the proposed inductive coupler. Since the sub-THz frequency band is utilized, a data rate of 10 Gb/s could be achieved while the chip size is only 0.2 mm(2) and 0.3 mm(2) for transmitter and receiver, respectively. The proposed WDT design consumes only 15 mW power from a 1-V supply.

关键词： wireless data transfer WDT wafer-level testing

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A wireless data and Power transfer-Enabled MCU for Shape-Configurable Chiplet-Based Computers 20

A Wireless Data and Power Transfer-Enabled MCU for Shape-Con...

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20th Asia-Pacific Conference on Circuits and Systems

作者： Kadomoto, Junichiro Irie, Hidetsugu Sakai, Shuichi Univ Tokyo Tokyo Japan

ISBN: (纸本)9798350378788;9798350378771

In this paper, we propose a shape-configurable chiplet-based computer for the easy construction of embedded computing systems with diverse functions and shapes. Adjacent chips are connected via a wireless bus that uses base-band data transfer through inductive coupling between on-chip coils. Power is wirelessly supplied to each chip through inductive coupling between coils on the board and on the chip. By combining multiple chiplets, it is possible to construct systems with various functions and shapes. The wireless connectivity and power supply facilitate easy functional modifications, additions, and fault management of the system. A challenge in realizing such a system is the electromagnetic interference between wireless data and power transfer. This paper investigates the interference between coils designed for broadband wireless data transfer and coils designed for narrowband wireless power transfer. Furthermore, we designed a test chip using 0.18-mu m CMOS technology, which integrates a 32-bit MCU, wireless data transfer circuits, and wireless power transfer circuits. By mounting two test chips on the same board, we demonstrated through measurements that inter-chip wireless data transfer is feasible during wireless power transfer.

关键词： chiplet inductive coupling wireless data transfer wireless power transfer shape-changeable computer

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Low Power wireless data transfer for Internet of Things: GSM Network Measuring Results 9

Low Power Wireless Data Transfer for Internet of Things: GSM...

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9th Mediterranean Conference on Embedded Computing (MECO)

作者： Prochazka, Vojtech Kubalik, Pavel Kubatova, Hana Czech Tech Univ Fac Informat Technol Prague Czech Republic

ISBN: (数字)9781728169491

ISBN: (纸本)9781728169491

This paper describes the properties of wireless data transfer for Internet of Things (IoT). It focuses on low power consumption of the device. The paper presents the results of measuring latency, throughput and power consumption of a GSM module connected to an Arduino during data transfer to a remote server running at a PC. The measuring methodology of obtaining these results is discussed. Power consumption measurements include sending files of various sizes from the GSM module via the GSM network to the server. Conclusions regarding battery lifespan for the GSM module are made in the paper. Throughput over the GSM network for this module is elaborated and a static part of sending time, of a file regardless its size, is identified in this paper. The throughput is measured in order to further analyze the usability of such a device in IoT. The usability of LTE in such a configuration for fast data transfer is also discussed. The latency between the GSM module and the server is approximated because it may influence power consumption.

关键词： GSM embedded systems Arduino cellular network wireless data transfer power consumption battery throughput LTE IoT low power latency

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Propagation dynamics of ultrabroadband terahertz beams with orbital angular momentum for wireless data transfer 14

Propagation dynamics of ultrabroadband terahertz beams with ...

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Conference on Broadband Access Communication Technologies XIV

作者： Kulya, Maksim S. Sokolenko, Bogdan Gorodetsky, Andrei Petrov, Nikolay V. ITMO Univ Digital & Display Holog Lab St Petersburg 197101 Russia Tampere Univ Fac Informat Technol & Commun Tampere 33100 Finland Univ Birmingham Sch Phys & Astron Birmingham B15 2TT W Midlands England

ISBN: (数字)9781510633780

ISBN: (纸本)9781510633780

We investigate an approach to short and medium-range wireless communications based on the use of terahertz beams possessing an orbital angular momentum (OAM) that allows for noise-resistant broadband carrier. A theoretical model of the proposed beams generation is developed and numerical predictions are given for propagation and visualization of complex-structured THz beams, including ones carrying a unit topological charge on a large number of spectral components of broadband terahertz radiation. The assessment method which in our case is terahertz pulse time-domain holography allows for analyzing spatio-temporal and spatio-spectral evolution of arbitrary shaped THz wave trains during their propagation in free space and interaction with obstacles.

关键词： Vortex beams THz radiation wireless data transfer

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Coupling-Dependent data Flipping in wireless Power and data transfer System

Coupling-Dependent Data Flipping in Wireless Power and Data ...

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IEEE International Symposium on Circuits and Systems (IEEE ISCAS)

作者： Qiu, Hao Sakurai, Takayasu Takamiya, Makoto Univ Tokyo Inst Ind Sci Tokyo Japan

ISBN: (纸本)9781728103976

Load modulation is a common method to transfer data from the receiver (RX) side to the transmitter (TX) side in a magnetic resonance coupling wireless power transfer system. However, coupling-dependent data flipping (CDDF), that the data can be flipped depending on the coupling between TX and RX coils, is found for the first time using the conventional voltage monitoring across the TX coil. An analytic formula of the critical coupling coefficient (k(C)) of the coils that determines CDDF is derived. To avoid CDDF, a TX input voltage monitoring method is proposed. Both the CDDF in the conventional method and the correct data transfer without CDDF in the proposed method are demonstrated in the measurement.

关键词： Coupling-dependent data flipping critical coupling coefficient load modulation magnetic resonance coupling transmitter input voltage monitoring wireless power transfer wireless data transfer

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wireless Power and data transfer System for Station-Based Autonomous Underwater Vehicles

Wireless Power and Data Transfer System for Station-Based Au...

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OCEANS MTS/IEEE Conference

作者： Ogihara, Makoto Ebihara, Tadashi Mizutani, Koichi Wakatsuki, Naoto Univ Tsukuba Grad Sch Syst & Informat Engn Tsukuba Ibaraki 305 Japan Univ Tsukuba Fac Engn Informat & Syst Tsukuba Ibaraki 305 Japan

ISBN: (纸本)9780933957435

Autonomous underwater vehicle (AUV) has widely been used for underwater explorations. However, AUV requires frequent launch and recovery processes for power feeding and data extraction. In order to solve these problems, we propose wireless power and data transfer system, which uses a pair of coils and transfer power and signal by using electromagnetic induction. We designed a system that can cover both power and communication signal transferring, and evaluated its performance by experiments. The obtained results suggest that the designed system can support high efficiency power transfer (>80%), high communication quality (with BER of 0.1%), and high data rate (>40kbps). It was confirmed that underwater wireless power and data transfer system can archived using single hardware.

关键词： autonomous underwater vehicle wireless power transfer wireless data transfer

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Fasteners State Detection System Based on wireless data transfer Module

Fasteners State Detection System Based on Wireless Data Tran...

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International Conference on Advances in Materials Science and Information Technologies in Industry (AMSITI)

作者： Zhao, J. J. Zhao, B. Li, X. H. Zhang, B. Wang, Bo Zhang, Wei Beijing Municipal Inst Labour Protect Municipal Key Lab Environm Noise & Vibrat Beijing Peoples R China

ISBN: (纸本)9783038350125

The safety requirements demanded from rail traffic have risen above all in view of the rapid development of modern high-speed trains. Railway fastener is the important part of rail line. The normal state of the fastener is the guarantee of the rail transportation security. The missing or broken fastener may be the tremendous threaten to the security, or even cause the serious traffic accidents. This paper presents a new fully automatic and configurable wireless data transfer system able to detect the absence of the fastening bolts that fix the rails to the sleepers. The systems guarantee a high accurate detection for the missing or broken fastening elements in combination with the strain measurement of the rubber pad under rail.

关键词： Rail Fastener Strain Measurement wireless data transfer

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Compact and Efficient FSK-CDR Design for Forward data transfer Over wireless Inductive Link

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INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS 2025年第0期

作者： Ullah, Naqeeb Barakat, Adel Bin Zulkalnain, Mohd Khairi Kanaya, Haruichi Pokharel, Ramesh K. Kyushu Univ Grad Sch Informat Sci & Elect Engn Fukuoka Japan BUITEMS Fac Informat Commun Technol Elect Engn Dept Quetta Balochistan Pakistan

Frequency shift keying (FSK) is a robust modulation scheme widely used in biomedical implants for wireless power and data transfer over inductive links due to its low sensitivity to amplitude noise and coil misalignment. However, conventional FSK modulation faces challenges in achieving high data rates and low power consumption, as it requires multiple modulation cycles to encode data bits (0 or 1), limiting carrier utilization. This paper proposes a novel FSK modulation scheme for clock and data recovery (CDR) that minimizes the required number of cycles to encode data bits, improving data rate and reducing power consumption. Using only two and one modulation cycles enables efficient data transmission at higher rates with lower energy usage, offering a promising solution for forward data communication. A prototype FSK modulator and CDR circuit are designed to implement this approach using 0.18 mu m CMOS process. The proposed circuit recovers clock and data signals from a FSK-modulated signal at rates up to 4 Mb/s and occupies an active area of 0.002747 mm2 (67 mu m x 41 mu m). The circuit consumes 15.4 mu W power from a 1.4 V supply for data transfer. The design achieves an energy efficiency of 3.5 pJ/bit and demonstrates an improved data rate-to-carrier frequency (DRCF) ratio and greater compactness than existing FSK demodulators. These features make it suitable for wireless data transfer in energy-constrained biomedical applications.

关键词： clock and data recovery (CDR) circuit frequency shift keying (FSK) inductive channel wireless data transfer

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wireless Power and data transfer System for Station-Based Autonomous Underwater Vehicles

Wireless Power and Data Transfer System for Station-Based Au...

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Oceans MTS/IEEE Washington (Conference)

作者： Makoto Ogihara Tadashi Ebihara Koichi Mizutani Naoto Wakatsuki Graduate School of Systems and Information Engineering University of Tsukuba Japan

ISBN: (纸本)9781467393744

关键词： Autonomous underwater vehicle wireless power transfer wireless data transfer

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Methods of Measuring Air Pollution in Cities and Correlation of Air Pollutant Concentrations

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PROCESSES 2023年第10期11卷

作者： Bodic, Milan Rajs, Vladimir Toskic, Marko Vasiljevic Bajic, Jovan Batinic, Branislav Arbanas, Milos Univ Novi Sad Fac Tech Sci Novi Sad 21102 Serbia

The monitoring of air quality continues to be one of the most important tasks when ensuring the safety of our environment. This paper aims to look at correlations between different types of pollutants, so that robust air quality measurement systems can be deployed in remote, inaccessible areas, at a reduced cost. The first matter at hand was to design an affordable and portable system capable of measuring different air pollutants. A custom PCB was designed that could support the acquisition of readings of, among others, particulate and CO sensors. Then, correlations between the concentrations of different pollutants were analyzed to identify if measuring the concentration of one type of pollutant can allow the extrapolation of the concentration of another. This particular study focuses on the correlations between the concentrations of particulate matter and CO. Finally, after observing a moderate correlation, it was proposed to measure the concentrations of pollutants that require less expensive sensors, and to extrapolate the concentrations of pollutants that require a more expensive sensor to measure their concentration. The link between particulate pollution and CO concentrations was identified and discussed as the result of this study.

关键词： air pollution monitoring correlation measurement wireless data transfer

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