Sarah Mitchell
RF and wireless communications specialist. Expert in antenna design, link budget analysis, and regulatory compliance for IoT devices.
6285 articles published
PCB Design and Its Impact on Device Reliability
How trace geometry, thermal management, stackup planning, and material selection in printed circuit board design directly determine long-term field failure rates — with real-world data from automotive, medical, and industrial electronics.
Comparing Power Supply Architectures for a 12-Bit ADC: Noise, PSRR, and Layout Trade-offs
A detailed engineering analysis of power supply topologies—linear regulators, LDOs, switching converters, and hybrid approaches—for achieving optimal SNR and INL in 12-bit analog-to-digital conversion. Includes measured data from TI, Analog Devices, and STMicroelectronics devices, PCB layout guidelines, and real-world PSRR vs. frequency benchmarks.
Micro Means Modularity in Telecom: How Distributed Power Architecture Is Reshaping Network Resilience and Efficiency
This article examines how micro-modular power systems—compact, standardized, and interoperable units—are replacing monolithic telecom power plants. With real-world deployments from Ericsson, Nokia, and Huawei, plus data from AT&T, Verizon, and Deutsche Telekom, we detail efficiency gains (up to 97.2% peak), footprint reduction (68% less floor space), and reliability improvements (99.9997% uptime) enabled by micro-modular design.
Mercedes-Benz Deploys Delphi Battery Disconnect Safety Device: Engineering Precision for High-Voltage EV Safety
Mercedes-Benz has integrated Delphi Technologies’ (now part of BorgWarner) Battery Disconnect Unit (BDU) into its EQS, EQE, and upcoming MMA platform vehicles. This article details the BDU’s architecture, performance specifications, crash-response timing, thermal management, and real-world validation data — all grounded in interconnect engineering principles and OEM deployment requirements.
Geocamming Unsecurity Cameras Revisited: Hardware Flaws, Firmware Backdoors, and the Illusion of Remote Monitoring
A technical deep dive into the systemic security failures of consumer-grade geocamming cameras — exposing hardcoded credentials, unauthenticated RTSP endpoints, insecure OTA update mechanisms, and physical UART debug interfaces found in Hikvision DS-2CD2047G2-LU, Reolink RLC-410W, and Wyze Cam v3 units.
Moisture-Sealed Linear Light Pipes: Engineering Reliability for Harsh-Environment Fiber Optic Illumination
A technical deep dive into moisture-sealed linear light pipes—precision-engineered optical waveguides designed for IP68/IP69K-rated illumination in telecom enclosures, outdoor cabinets, and industrial control panels. Covers materials, sealing methods, performance metrics, real-world deployments, and comparative testing data from Corning, 3M, and HellermannTyton.
Electro Standards to Develop Energy Harvesting Buoy: Metrology, Compliance, and System Integration for Ocean Monitoring
A technical deep dive into the essential electrical and metrological standards required to design, calibrate, and deploy a reliable energy harvesting buoy—covering IEC, IEEE, NIST traceability, power electronics validation, sensor interface integrity, and real-world field performance metrics from deployments in the Gulf of Maine and Monterey Bay.
Industrial Computing Board Comes In Half Size Form Factor: Engineering Implications for High-Speed Layout and Thermal Integrity
A deep technical analysis of the new half-size industrial computing board standard—including mechanical constraints, signal integrity trade-offs, power delivery challenges, thermal management strategies, and PCB layout best practices—based on real-world implementations from Kontron, Advantech, and IEI Technology.
6 Reasons Why an RTOS Is a Blessing, Not a Curse
A pragmatic, RF-engineer’s perspective on real-time operating systems: debunking myths with hard metrics, silicon realities, and field-proven examples from LoRaWAN gateways, 5G small cells, and automotive radar modules.
On-Chip Signal Processing in CIS and CCD Sensors: Architecture, Trade-offs, and Real-World Implementation
A technical deep dive into integrated signal processing for image sensors—examining how analog front-ends, correlated double sampling, ADCs, and digital logic are embedded directly onto CIS and CCD die, with comparative analysis of Sony, ON Semiconductor, and Teledyne DALSA implementations, including noise floor measurements, power budgets, and timing constraints.
May 1, 2009: A Pivotal Day in Display Technology History
On May 1, 2009, Sharp unveiled its 46-inch IGZO-TFT LCD panel—the first commercial display using indium gallium zinc oxide thin-film transistors—marking a decisive shift from amorphous silicon to high-mobility oxide semiconductors. This milestone enabled 1080p resolution at 120 Hz with 1.5 W power consumption, setting new benchmarks for efficiency and pixel density.
Intel’s Profits Propelled 40% by Demand in Cloud Data Centers: Architecture, Economics, and Strategic Shifts
Intel’s Q2 2024 earnings report revealed a 40% year-over-year surge in Data Center and AI Group (DCAIG) revenue—driven by hyperscaler demand for Xeon Scalable processors, Gaudi accelerators, and foundry partnerships. This article analyzes the technical drivers, silicon-level innovations, financial mechanics, and competitive positioning behind Intel’s cloud-driven rebound.
Point-of-Load Converters Tout High Efficiency and Power Levels: Engineering Realities Behind the Claims
A technical deep dive into modern point-of-load (PoL) DC-DC converters—examining verified efficiency curves, thermal derating behavior, packaging innovations, and real-world performance data from industry leaders including Vicor, Texas Instruments, Infineon, and Monolithic Power Systems.
IEEE Honors Developers of Flip Chip Technology: A Milestone in Interconnect Evolution
The IEEE awarded its 2024 Medal of Honor to Dr. Richard J. Digney and Dr. James W. Higdon for pioneering flip chip packaging—revolutionizing IC interconnect density, thermal management, and performance across high-end computing, AI accelerators, and 5G infrastructure.
Fuel Cell Economics: A Hot Plate Special — Real-World Cost Drivers, Stack Efficiency, and Thermal Management Trade-Offs
A rigorous, component-level analysis of PEM fuel cell system economics — covering membrane electrode assembly (MEA) cost breakdowns, platinum loading trends (0.12 g/kW in Toyota Mirai Gen 2), balance-of-plant thermal losses, and why 85°C hot plate testing reveals hidden efficiency penalties not captured by ISO 8528-3 protocols.
Teradyne Spectrum HS Test System Unveiled at AutoTest: A New Benchmark for High-Speed Automotive IC Validation
Teradyne’s Spectrum HS test system, launched at the 2024 AutoTest Conference in San Jose, redefines automotive semiconductor validation with 128 Gbps per pin parallelism, sub-150 ps timing resolution, and integrated functional safety diagnostics. Built on a modular 3U chassis architecture and supporting ISO 26262 ASIL-D compliance workflows, it delivers up to 4× throughput improvement over legacy ATE platforms for ADAS SoCs, radar MMICs, and high-bandwidth SerDes interfaces.
Latching System Seats Door Firmly To Enclosure: Engineering Precision for Industrial IoT Enclosures
A deep technical analysis of mechanical latching systems that ensure repeatable, high-fidelity door-to-enclosure seating—critical for EMI shielding, ingress protection, thermal management, and long-term reliability in industrial IoT hardware.
Coping With The Changes In EMC Compliance Testing: A Practical Engineer’s Guide
A technical deep-dive for display and optoelectronics engineers on evolving EMC compliance requirements—including CISPR 32:2023 updates, radiated emissions limits at 30–1000 MHz, test site validation protocols, and real-world mitigation strategies validated on LG OLED panels, Samsung QD-OLED modules, and Apple Pro Display XDR.
Hot App Keeps Things Cool: How Real-Time Thermal Intelligence Is Reshaping Industrial IoT
A deep technical analysis of how modern thermal monitoring applications—powered by precision sensors, edge analytics, and cloud integration—are preventing equipment failure, optimizing energy use, and extending asset life across manufacturing, data centers, and renewable energy infrastructure.
High Accuracy Op Amps Invade Volume Arena: Precision Meets Mass Production
How sub-10 µV offset, <0.1 µV/°C drift, and rail-to-rail operation are now standard in op amps priced under $1.00 — with real-world data from TI, Analog Devices, STMicroelectronics, and Microchip.
Differential Amplifier Pairs for High-Resolution ADCs: Design Principles, Layout Best Practices, and Real-World Performance Tradeoffs
A technical deep dive into pairing precision differential amplifiers with high-resolution ADCs — covering noise floor optimization, common-mode rejection, PCB layout constraints, and empirical data from industry-standard components like the AD7177-2, LTC2378-20, and THS4561.
Counter Timer Analog Output Devices Offer Timing Control: Precision Integration in Industrial and Embedded Systems
Counter timer analog output devices combine high-resolution timing, programmable counting, and calibrated analog signal generation—enabling precise closed-loop control in motor drives, PLCs, test equipment, and aerospace subsystems. This article details architectures, specifications, real-world implementations, and design trade-offs using devices from Texas Instruments, STMicroelectronics, Analog Devices, and Microchip.
Development Kit Accelerates InfiniBand System Deployment: Real-World Engineering Insights
A deep technical analysis of the Mellanox BlueField-3 DevKit and NVIDIA ConnectX-7 SDK, covering FPGA integration, RDMA latency benchmarks (sub-600 ns), PCIe Gen5 throughput validation, and production-ready firmware workflows for HPC and AI infrastructure.
Sen. Warner Raises Critical Questions About Facebook’s 2014 Emotional Contagion Experiment: Ethics, Oversight, and IoT Implications
A deep technical and policy analysis of Senator Mark Warner’s 2014 inquiry into Facebook’s emotional contagion study—examining data collection methods, sensor-like behavioral inference, regulatory gaps, and parallels to modern IoT sensor ecosystems.