Low-frequency (LF) magnetoelectric (ME) antennas are of great importance in implantable medical device (IMD) applications compared to their electromagnetic (EM) counterparts as they can potentially offer appropriate size miniaturization and lower path loss higher efficiency. In this work, a self-biased, miniaturized LF ME antenna is proposed, which operates at its electromechanical resonant frequency 49.9 kHz, with the scaled down only 1.75 mm3, significantly smaller than that comparable EM...

In this work, a novel barium titanate–coated cobalt ferrite core–shell magnetoelectric nanoparticle and poly(3,4‐ethylenedioxythiophene): polystyrene sulfonate–based wearable energy‐harvesting patch for wireless power‐transfer applications are proposed. The developed flexible has unique ease of fabrication high‐efficiency energy conversion capability from the magnetic field mechanical motion to electric as compared bulk or thin‐film‐based devices. This device is achieved due crystalline...

Abstract The vast proliferation of wearables and smart sensing devices in the last decade has created an immense demand for new efficient powering solutions. research focus shifted towards developing simple, cost-effective, flexible device topologies capable capturing kinetic energy associated with human body. Piezoelectric triboelectric mechanisms are widely employed to convert biomechanical electrical power due their inherent merits terms affordable designs high conversion efficiencies. In...

A fully integrated low power and phase noise 5.8 GHz VCO is designed fabricated in standard 0.24 /spl mu/m single-poly, 5-metal digital CMOS process. The VCO-core draws 2 mA of current from a 2.5 V supply. Measured at 1 MHz offset the center frequency -112 dBc/Hz. It has tuning range 810 with performance throughout range. meets requirements for IEEE802.11a WLAN standard. Low have been achieved simultaneously by use np complementary cross-coupled topology. novel orientation inductor pair used...

This work experimentally demonstrates the operation of a miniaturized magnetoelectric (ME) wireless power transfer (WPT) system by incorporating ME transducer and suitable interface management circuit (PMC) for potentially powering implantable medical devices (IMD) wirelessly. A heterostructure is micromachined to obtain desired device dimensions 3.5 × 5 mm 2 restrict operating frequency at clinically approved 50 kHz. The proposed also aims address trade-off between miniaturization,...

We demonstrate a scalable, cost-effective hybrid sensor based on piezoelectric-triboelectric mechanisms for pressure mapping of 36 regions the hindfoot and precise detection any deformity. The matrix comprises individually addressable 6×6 sensors, which prevent cell crosstalk enhance limit up to 170kPa. can be easily integrated as an in-sole device because it is constructed flexible substrate using photo-patternable BTO (Barium Titanate)/SU-8 nanocomposite. developed has sensitivity 34mV/kPa...

We report the experimental demonstration of a low-frequency magnetoelectric (ME) wireless power transfer (WPT) system, including tri-layered chip-sized ME transducer and suitable, self-powered management circuit (PMC) for powering Implantable Medical Devices (IMDs). The is designed to operate at resonance frequency 50 kHz, which therapeutically relevant IMD applications. Experimentally, device shown an AC magnetic field 40µT without any DC biasing, generating output voltage around 0.4 V....

This work presents the design and analysis of magnetoelectric (ME) transducer based wireless power transfer (WPT) system incorporating a suitable interface management circuit (PMC). ME transducers provide effective means to high-efficiency medical implantable devices at low frequencies addressing trade-off between size miniaturization, lower skin attenuation higher transfer. A tri-layered laminated operating 50kHz is designed fabricated study source characteristics. The proposed WPT device...

This work presents a flexible and wearable magnetoelectric nanogenerator (MENG) for biomedical monitoring. The MENG band contains crystalline core-shell nanoparticles fabricated via Pechini method generates 650mV at 48.6 kHz AC magnetic field. (5cm×2.5cm) 900mV, 1.75mW/cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> of voltage power density respectively in multi-mode. Integrated with Dickson charge pump, it produces DC 1.6 V external...

A fully-integrated LNA is presented in context of a dual-band direct-conversion receiver architecture for 5-6 GHz wireless LAN applications. Designed and fabricated 0.24 /spl mu/m standard digital CMOS process, the exhibits wideband 50 ohm input matching with S/sub 11/ -23.5 dB at 5.5 GHz. The measured IIP/sub 3/ P/sub 1dB/ are +10 dBm -1.5 respectively. It has noise figure 4.8 shown to meet requirements IEEE 802.11a WLAN standard.

This paper reports the design, fabrication, and testing of a direct current (DC) Triboelectric Generator (DC-TEG) based on flexible materials topology. It offers powering solution integrated within single-substrate device topology with prime advantages high-output, low-cost, flexible, compact design. is in contrast conventional DC-TEG topologies involving mechanical rectifier, electrostatic breakdown, or dynamic Schottky junctions. The generates unidirectional substantially high peak to...

Magnetoelectric heterostructure based devices are drawing major attention due to their capability convert the low-intensity magnetic field into electrical energy. In this work, a miniaturized low frequency magnetoelectric wireless power transfer (WPT) system is reported for powering implantable medical (IMDs). The proposed device addresses limitations of existing WPTs in terms miniaturization, generation, and bio-compatibility. comprises piezoelectric (PVDF) layer sandwiched between two...

The interest in flexible vibrational energy harvesters is continuously increasing due to their low cost, biocompatibility, and environmental friendliness. This paper presents the optimization of PVDF-TrFE nanocomposite thin film which barium titanate (BTO) added as a functional material for transformation inherent α highly piezoelectric β phase. BTO are dispersed dimethyl sulfoxide (DMSO) spin-coated on Molybdenum/polyethylene terephthalate sheet (Mo/PET). composition crystallinity varied...

This paper presents a GaAs/AlGaAs HBT transmitter MMIC chip set consisting of power amplifier, mixer and voltage-controlled oscillator (VCO) for 5.8 GHz OFDM applications. The performance the in an system is investigated by means envelope co-simulation circuit simulation platform that conforms to IEEE 802.11a wireless LAN standard. To best our knowledge, this research represents first reported implementation GaAs technology.

A fully-integrated differentially-tuned CMOS LC voltage controlled oscillator (VCO) is presented. The VCO designed in a 0.13 /spl mu/m standard digital process with 1.2 V supply. It achieves phase noise of -99 dBc/Hz at 1 MHz offset from carrier frequency 10 GHz and has tuning range 3.7 the core consuming only 3.6 mW DC power. This satisfies requirements clock-and-data-recovery (CDR) circuits for gigabit optical communication systems. paper also investigates, first time, circuit topologies...

This paper presents a low-cost flexible energy harvester with groove structure and attached copper-proof mass using barium titanate/polyvinylidene fluoride-trifluoroethylene (BTO/PVDF-TrFE) film on polyethylene terephthalate (PET) substrate conditioning circuit. In this context, we simulate optimize the rectangular shape design of different dimensions. Further, optimized is fabricated BTO/PVDF-TrFE nanocomposite characterized for voltage at values acceleration. Moreover, Dickson charge pump...

This letter presents an integrated system comprising of a direct current triboelectric generator (dc-TEG) and associated power management circuit (PMC). The asymmetric high peak-to-average ratios the output are two major bottlenecks that limit charging efficiency TEGs. intrinsic impedance these generators further complicates charge transfer to large capacitive load. DC-TEG generates unidirectional without rectification. A based on two-stage series–parallel switched capacitor configuration is...

This work presents the development and investigation of a mechanomagnetic sensor with Metglas as active layer for potential multimodal sensing applications. Along conventional bulk magnetostrictive properties Metglas, surface charge retention based triboelectricity is investigated first time. The pristine exhibits unique switch in its triboelectric polarity converts from tribo-positive to tribo-negative on annealing at 500 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...

This work proposes an experimental demonstration of a wireless communication system with mm-scale low-frequency Magnetoelectric receiving antenna that operates at resonance frequency 49.9 kHz. The proposed is intended for short-range up to 200 cm, received power −47.4 dBm. device has limit-of-detection (LoD) 0.3 mOe, and the corresponding voltage spectral density $1.9 \mu V / \sqrt{H z}$ magnetic field sensitivity 0.55 V/Oe. near-field data transfer been successfully established by...

This paper presents the development of a high performance broadband transceiver front-end chipset for 5-6 GHz wireless applications in commercial GaAs MESFET process. The developed include power amplifier, mixer, VCO and LNA.. chipsets are compliant to IEEE 802.11a LAN standard. amplifier shows gain 14 dB, an output 1 dB compression 24 dBm, LNA exhibits 13.5 gain, 2.2 noise figure IIP3 2.8 dBm. performances show significant linearity improvement over earlier implementations.

In this work, a standard four-metal layer, Indigenous 180nm Digital CMOS Process is chosen for the design of an inductorless wideband differential RF-Amplifier to overcome limitations SCL Foundry designing RF circuits due non-availabilities top thick metal, models inductors and interconnects. A capacitor cross-coupled g <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">m</sub> - boosting scheme introduced improve gain, input, output matching while...

A 5.5 GHz monolithic VCO is designed in standard 0.24 /spl mu/m single-poly, 5-metal digital CMOS process. The VCO-core draws only 4.8 mW of DC power. measured phase noise at 1 MHz offset from the center frequency as low -114 dBc/Hz. Tuning range 16% covers bands for wireless LAN (IEEE802.11a and HiperLAN) standards 5-6 range. An optimal octagonal inductor structure nMOS-pMOS complementary cross-coupled topology have enabled simultaneous achievement low-power low-phase-noise performance,...