Ways to Improve Wearable Device Battery Life

Survey of wearable power solutions covering energy harvesting, battery and power management, and Qi-compatible wireless charging reference designs.

Planar Reflectarray Antenna Co-simulated with MATLAB and HFSS

Single-layer windmill unit for reflectarray antenna achieving 473.6° linear phase range; 80×80 mm Ka-band prototype (400 elements) shows 27.86 dBi gain and 35.7% 3 dB bandwidth.

Acoustic Source Separation Improves Speech Recognition

Overview of acoustic source separation techniques for embedded devices, detailing DNN and cochlear (CASA) methods to improve speech recognition in noisy environments.

5G Capital Addresses 5G-A Deployment Challenges

Technical summary about China Unicom's 5G-A trials and Beijing large-scale demo, detailing 10 Gbps downlink peak, audiovisual use cases, and deployment challenges.

Optimizing Power Consumption in IoT Wearables

DC/DC converter strategies for IoT wearables, analyzing hysteretic control and hybrid converters to balance fast transient response, low quiescent power, and controlled noise.

Runxin Ultra-Low-Power MCU with BLE Solution

Overview of ultra-low-power MCU technology (SPOT) and low-power BLE solutions, including BLE 5.2 and LE Audio, for always-online IoT and wearable devices.

Bluetooth Solutions for Wearable Devices

Technical guide to Bluetooth Low Energy for wearable devices, comparing BLE vs BR/EDR, GATT roles and reference designs like nRF51822 and TI CC256x.

700-nA Quiescent Current Enables Always-On Wearable Designs

TI bq25120 battery management solution for wearables and IoT: integrated charger, low 700 nA quiescent current, I2C-configurable LDO/buck and battery monitor.

Digital Twin Integration for Steel Pipe Production with 5G and Industrial Internet

Framework for applying 5G to straight?seam steel pipe production: networking, unique identification, equipment upgrades, and digital twin virtual lines.

Improving Battery Life for Wearable Devices

Overview of ultra-low-power power conversion for wearables, covering LDOs, buck-boost and boost DC-DC converters, low-power MCUs and sensor front-ends.

Understanding RF and Microwave Concepts Simply

Technical overview of RF propagation phenomena: electromagnetic waves, direct/reflected/diffracted/scattered waves, skin effect, Fresnel zones, multipath and slow/fast fading.

Wearables in the Wireless Charging Market

Overview of wireless charging technology and market adoption across wearables, automotive and mobile devices, highlighting receivers, transmitters and coils.

5G Filter Tuning and Debugging Methods

Practical guide to 5G filters: design preparation, manufacturing adjustments, testing and verification techniques for diagnosing and tuning filter performance.

PCB Design Considerations for Wearable Devices

Practical guide to wearable PCBs covering substrate choices (FR4 vs Rogers), manufacturing tolerance, RF design, and RF transmission lines like microstrip and coplanar waveguide

Improving Multi-Sensor Readout Using Phase Division Multiplexing

Phase-division multiplexing (PDM) using maximal-length (ML) sequences to improve SNR and per-source sampling efficiency in reflective pulse oximetry versus TDM.

What Is 5G Messaging and Why Promote It?

Technical overview of China’s 5G messaging policy and RCS: origins, IMS basis, MaaP enterprise use, device support, ecosystem challenges and deployment outlook.

5G Edge Gateway for Energy Storage Monitoring

Online energy storage monitoring solution using a 5G edge gateway: architecture and design for environment, energy, equipment and security monitoring at storage stations.

Wearable Devices as a Human Information Exchange Platform

Technical and market overview of wearable devices, covering sensors, ultra-low power design, connectivity, AR/VR, industry bottlenecks and investment opportunities.

Reducing Display Power with Parallel Asynchronous SRAM

Technical guide to reducing display power in wearables: optimizing frame buffer memory, controller integration, and low-power serial memories (Quad SPI F-RAM)

Design and Implementation of an Optical Heart Rate Monitor

Technical overview of photoplethysmography (PPG) design for optical heart-rate monitoring, covering LEDs, photodiode interface, drivers, integration, and algorithm trade-offs.