A5101854967- Photonic and Optical Devices
- Advanced Photonic Communication Systems
- Optical Network Technologies
- Advancements in Photolithography Techniques
- Advanced optical system design
- Fluid Dynamics and Mixing
- Photorefractive and Nonlinear Optics
- Advanced Memory and Neural Computing
- Heat Transfer and Boiling Studies
- Radio Frequency Integrated Circuit Design
- Semiconductor Lasers and Optical Devices
- Hydrocarbon exploration and reservoir analysis
- Energy Harvesting in Wireless Networks
- Nanofabrication and Lithography Techniques
- Advanced Graph Neural Networks
- Ferroelectric and Negative Capacitance Devices
- Electrohydrodynamics and Fluid Dynamics
- Optical Coatings and Gratings
- Soil, Finite Element Methods
- Wireless Networks and Protocols
- Advanced Power Amplifier Design
- Power Transformer Diagnostics and Insulation
- Advanced Fluorescence Microscopy Techniques
- Magneto-Optical Properties and Applications
- Wireless Body Area Networks
Phase Sensitive Innovations (United States)
2017-2025
Tsinghua University
2007-2024
Beihang University
2024
University of Delaware
2004-2022
BP (United States)
2016
Wuhan University of Technology
2013
Kyushu University
2012
The University of Texas at Austin
2009-2011
Institute of Microelectronics
2010
This paper presents PLoRa, an ambient backscatter design that enables long-range wireless connectivity for batteryless IoT devices. PLoRa takes LoRa transmissions as the excitation signals, conveys data by modulating signal into a new standard "chirp" signal, and shifts this to different channel be received at gateway faraway. achieves holistic RF front-end hardware software design, including low-power packet detection circuit, blind chirp modulation algorithm energy management circuit. To...
Graph neural networks (GNNs) update the hidden representations of vertices (called Vertex-GNNs) or edges Edge-GNNs) by processing and pooling information neighboring combining to exploit topology information. When learning resource allocation policies, GNNs cannot perform well if their expressive power is weak, i.e., they differentiate all input features such as channel matrices. In this paper, we analyze Vertex-GNNs Edge-GNNs for three representative wireless policies: link scheduling,...
Human behavior recognition (HBR) has emerged as a core research area in human-computer interaction. In this article, we give comprehensive introduction to HBR using Wi-Fi channel state information. We first comprehensively review the state-of-art of HBR, based on two techniques that drove recent progress channel-state-information-based -- fingerprint-based and model-based. Specifically, describe their corresponding characteristics, general architectures, provide performance comparison...
A low voltage, wide bandwidth compact electro-optic modulator is a key building block in the realization of tomorrow's communication and networking needs. Recent advances fabrication application thin-film lithium niobate, its integration with photonic integrated circuits based silicon make it an ideal platform for such device. In this work, high-extinction dual-output folded Mach Zehnder nitride niobate material system presented. This has interaction region length 11 mm physical 7.8 mm. The...
This paper presents the design, implementation and evaluation of In-N-Out, a software-hardware solution for far-field wireless power transfer. In-N-Out can continuously charge medical implant residing in deep tissues at near-optimal beamforming power, even when moves around inside human body. To accomplish this, we exploit unique energy ball pattern distributed antenna array devise backscatter-assisted algorithm that concentrate RF on tiny spot surrounding implant. Meanwhile, levels other...
In the trial and research phases, fabrication of micro electro mechanical systems (MEMS) devices integrated circuits (ICs) is both lengthy costly, owing to demands imposed by use photomasks. Maskless lithography techniques, such as electron beam (EB), laser scanning, digital mirror device (DMD) are widely used. MEMS field, submicron wiring patterns often created on uneven structures. We have developed a maskless technique modifying DMD with two automatically switchable lenses. The first lens...
Alcohol has a variety of effects on the human body, affecting both sympathetic and parasympathetic nervous system. We examined peripheral blood flow alcohol drinkers using micro-integrated laser Doppler meter (micro-electromechanical system sensor). An increased heart rate was recorded at earlobe after ingestion, we observed strong correlation between flow, rate, breath content in light drinkers; but not heavy drinkers. also found that amplitude pulse waves measured fingertip during an...
In the trial and research phases, fabrication of micro electro mechanical systems (MEMS) devices integrated circuits (ICs) is both lengthy costly, owing to demands imposed by use photomasks. Maskless lithography techniques, such as electron beam (EB), laser scanning, digital mirror device (DMD) are widely used. MEMS field, submicron wiring patterns often created on uneven structures. We have developed a maskless technique modifying DMD with two automatically switchable lenses. The first lens...
This paper presents transition from coplanar waveguide (CPW) to rectangular for <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">W</i> -band (75-110 GHz) operations. The consists of a cosine-shaped fin extending the upper wall onto CPW signal electrode. design features direct integration with opto-electronic devices on lithium niobate (LiNbO <sub xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> ) applications millimeter wave optical processing....
A novel technique for generating RF sources mobile communications based on dual Mach–Zehnder modulators and high-power charge-compensated modified unitraveling carrier (CC-MUTC) photodiodes is presented. system model developed used to establish mitigate nonlinearities attributed its constituent components, i.e., waveform generators, amplifiers, modulators, photodiodes. In particular, digital predistortion improve source linearity. Extensive experiments are conducted characterize the proposed...
We present an RF-photonic phased-array receiver that provides simultaneous multi-band and multi-beam operation in the millimeter-wave region of spectrum. It uses a photonic integrated circuit to perform RF beamforming with near unlimited beam-bandwidth product.
The aim of this paper is to explore the use Graphic Processing Unit (GPU) for mask design using inverse lithography technique (ILT). We extend a newly proposed ILT algorithm called cost-function-reduction method (CFRM) general partial-coherence image systems. To release heavy computational cost in such as intensity computation, modified GPU implementation. scalability implementation demonstrated different sizes matrix incoherence system and system. total optimization time 25μm×25μm model...
Abstract Network models are a powerful method for extracting macroscopic multiphase properties from microscopic information. All network of capillarity-controlled displacements (drainage/imbibition) require critical curvatures pore level events as input. Techniques that ensure accurate in these therefore valuable. We describe novel to verify the correct choice curvatures: pore-by-pore comparison displacement predicted by model with those computed directly original space. The latter obtained...
The application of electric field has been demonstrated as an effective way to enhance pool boiling heat transfer. In past studies, adiabatic experiments were often conducted simulate the dynamics nucleate bubbles in presence field, where gas injected from orifice, avoid complexities involved experiments. While studies yield useful information bubble dynamics, further about during transfer are still necessary for a full understanding effects applied on liquid-vapor phase change this paper,...
Inverse lithography technique, which treats mask synthesis as an inverse problem, has been considered a strong contender to deal with the 45 nm technology node and beyond. But one problem exists in present pixel based algorithms: describe patterns more accurately obtain better image quality, usually need finer grid representation, results extremely intensive computations. In this paper, new method is proposed mitigate issue on level-set method. This utilizes coarse-grid-approximation (CGA),...
The thermal properties of modified uni-traveling carrier (MUTC) photodiode flip-chip bonded to AlN and diamond are simulated. impedance InGaAs is the primary source internal heating. An n-down epitaxial structure designed improve dissipation. Compared conventional p-down configuration, MUTCs diamond, or submounts achieved 145% 110% improvement in dissipated power density at failure, respectively. improved characteristics presage higher RF output before failure.
We demonstrate a broadband, positive gain, shot noise limited microwave photonic link using dual-output lithium niobate on insulator (LNOI) modulator and balanced, high-power photodiode. ~20dB relative intensity (RIN) suppression ~15dB figure (NF) at 1GHz are measured for the 20GHz link.