The objectives of this paper are to propose a method that can accurately estimate the human heart rate (HR) using an ultrawideband (UWB) radar system, and determine performance proposed through measurements. uses feature points signal HR efficiently accurately. Fourier- periodicity-based methods inappropriate for estimation instantaneous HRs in real time because heartbeat waveforms highly variable, even within beat-to-beat interval. We define six waveform features enable correlation...

Interaction of kinesin-coated latex beads with a single microtubule (MT) was directly observed by fluorescence microscopy. In the presence ATP, binding kinesin bead to MT facilitated subsequent other an adjacent region on that extended for micrometers in length. This cooperative not ADP or 5'-adenylylimidodiphosphate (AMP-PNP), where along random. Cooperative also induced engineered, heterodimeric kinesin, WT/E236A, could hydrolyze yet remained fixed ATP. Relative stationary WT/E236A MT,...

We demonstrate an accurate remote measurement of heartbeats using ultra-wideband radar system. Although most conventional systems use either continuous waves or impulse-radio for vital monitoring, suffer from non-stationary clutters, while cannot detect heartbeats. Our system has a moderate fractional bandwidth intermediate these systems, resulting in both the suppression clutters and high sensitivity measuring heart rates even dynamic environment. A simultaneous signal participant employing...

Vital-sign estimation using ultra-wideband (UWB) radar is preferable because it contactless and less privacy-invasive. Recently, many approaches have been proposed for estimating heart rate from UWB data. However, their performance still not reliable enough practical applications. To improve the accuracy, this study employs convolutional neural networks to learn special patterns of heartbeats. In system, skin displacements target person are measured radar, signal converted a two-dimensional...

Outstanding GaN-based HFETs (HFET: Heterojunction Field-Effect Transistors) [1] power devices are expected to replace all Si in high applications such as inverter systems due their excellent performance. In order exploit the full potential of emerging GaN devices, gate driver that controls device by a pulse width modulation (PWM) signal is becoming more important. The vital function provide an isolated against reference source voltage operates at voltage. addition this function, integration...

Bonding wires are extensively used in integrated circuit (IC) packaging and design RF applications. An approach to fast three-dimensional (3D) modeling of the geometry for bonding circuits packages is demonstrated. The can readily be extract electrical parameters such as inductance capacitance. equivalent presented model frequency response wires. To verify simulation accuracy, test structures have been made measured. Excellent agreement between simulated measured data achieved frequencies up...

Measurement of heartbeats is essential in cardiovascular magnetic resonance imaging because the measurement must be synchronized with phase cardiac cycles. Many existing studies on radar-based heartbeat monitoring have focused echoes from torso only, and such cannot applied to subjects scanners only head soles can seen outside. In this study, we demonstrate feasibility remote subject’s using a 60-GHz ultra-wideband radar. The intervals measured radar are quantitatively compared those...

A 26 GHz short-range radar (SRR) system has been developed based on a 2.5 Gcps direct sequence spread spectrum (DSSS) technique combined with simple homodyne detection. Separate frequency-triplers have provided transmitter (TX) and receiver (RX) chips to cut off the carrier-leakage path from local signal. By using this configuration, in TX signal can be significantly suppressed falling into satisfactory range of UWB regulation. The present achieved maximum detection 14 m resolution 6 cm. TX,...

The differential current dV/dR in a resistor forms volatile capacitance across itself. When the is less than Ohm current, V/R, positive. Conversely, when it exceeds becomes negative. If equals zero. transition of this from positive to negative has been observed combination multi-walled carbon nanotube material and vacuum space. Additionally, we have fabricated two-dimensional planar inductor without coil using capacitor.

The proportion of individual investors in security markets has been rising at a rapid rate Japan recent times. As result, the need for technology to support making smarter investment decisions is ever increasing. When make decisions, what most important information they should hunt for? It be able sense company's future performance forecast. This because even if current red (unfavorable) zone, stock prices will tend rise it shows that recover from enterprise side. Therefore, this research,...

The feasibility of measuring heart rate using radar echoes from a human head is demonstrated. Non‐contact measurement vital signs has been attracting much attention because such technologies can breakthrough benefits for monitoring health conditions without electrodes or wearable devices. Most existing studies have measured the torso, particularly chest wall. However, this difficult multiple interfering reflections complex shape torso and other body parts, as limbs. current study first...

In recent years, ESG investment has been attracting a lot of attention both practice and academia. the midst these trends, corporate non-financial information become more important, integrated reports that include financial have attention. However, unlike statements, there are no standard forms in reports. The content amount them vary, ingenuity each company can be seen. addition, while shown as numerical values graphs, tends to qualitative information. Since it is difficult read compare...

A new MM-wave IC, constructed by flip-chip bonded heterojunction transistors and microstrip lines formed on Si substrate, has been proposed demonstrated. Good agreements between calculated measured characteristics of this IC (named MFIC: millimeter-wave IC) have obtained up to 60 GHz band using micro bump bonding technology. Several MFICs such as HFET/HBT amplifiers fabricated confirm their designed performance.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML"...

Ultrawideband Doppler radar interferometry is known as an effective method that enables high-resolution imaging when using a simple antenna array. The technique, however, suffers from image artifacts multiple moving targets with the similar velocities are present in same range bin. To resolve this problem, we combine technique Capon methods. Through numerical simulations and experiments, show remarkable performance improvement achieved by proposed method.

The isolated direct gate driver with Drive-by-Microwave technologies can directly drive a power switching device by wireless transmission of RF modulated signal through the electromagnetic resonant coupler and requires no additional voltage source. In order to improve performance such as fall time characteristic consumption driver, new using SPDT switch is proposed, which effectively inter-channels for positive negative outputs. fabricated GaN single-chip realized 2.0Mbps isolation...

Contactless respiration monitoring using Doppler radar is an important technology for healthcare applications. The measures small displacements of the body surface. In this study, we propose a new algorithm to separate multiple targets placed closely together at same range but different lateral positions ultra-wideband array and Capon method. method, which adaptive beamforming - technique, assumes that arrival echoes are not correlated. However, from human should be correlated reduces system...

A patent map, a visual representation of related information, is an effective strategic tool for analysis application trends. In particular, effect-technology type map commonly used as examinations are based on technology and effect terms the inventions. However, conventional mining tools not realized to make map. order generate maps automatically, we propose method extracting information technological from documents. Our proposed described by following steps. (Step 1) Extract expressions...

To measure vital signs using Doppler radar, a common approach involves the use of time-varying echo phase. acquire these measurements, clutter rejection is necessary because power often larger than power. reject static clutter, several techniques have been proposed that assume relatively large phase rotation angles many studies measurement upper torso, where displacement mainly caused by respiration. However, signals from other parts human body are known to smaller displacements exhibit...

High output power AlGaN/GaN metal-insulator-semicon-ductor (MIS) hetero-junction field effect transistor (HFET) on Si substrate for millimeter-wave application has developed. temperature chemical vapor deposition (HT-CVD) grown SiN as a gate insulator improves the breakdown characteristics which enables operation at high drain voltage of 55V. The device exhibits current 1.1A/mm free from collapse and RF gain 10.4dB. amplifier module developed MIS-HFET with width 5.4mm an 10.7W linear 4dB...

The wireless power transmission technology using an electro-magnetic resonant coupler (EMRC) has been applied to isolated direct gate driver for GaN switching devices. This with the Drive-by-Microwave technologies dose not needs additional voltage source and a photo-coupler because it can supply signal all together. capability in is crucial its performances, especially, regarding speed consumption. paper presents potential of GaN/Sapphire 5.8GHz compact butterfly-shaped EMRC. Since...

Speech recognition and speech-based dialogue are means for realizing communication between humans robots. In case of conventional system setup a headset or directional microphone is used to collect speech with high signal-to-noise ratio (SNR). However, the user must wear has

We review our state-of-the-art GaN-based device technologies for power switching at low frequencies and high frequency operation aiming future millimeter-wave communication systems. These two applications are emerging in addition to the widely investigated amplifiers microwave cellular base stations. As GaN devices, we present a novel structure called Gate Injection Transistors (GIT), which enables normally-off with drain current. Here also world highest breakdown voltage of 10400 V...

Abstract The light–pupil reflex system has been the object of study in physiological engineering, as a typical example involuntary biological systems. As regards variable that actually controls pupil, however, there little discussion its role vision. This notes pupil is closely related to spatial frequency response eye's optical system, and discusses relation between quality retinal image size, determined by external characteristics system. By defining information capacity evaluation...