ALLPCB
What Causes Passive Intermodulation and How to Solve It
Explore passive intermodulation (PIM) in RF systems: causes, material/contact nonlinearity, real satellite cases, and mitigation tips for engineers.
Radar Antennas: Understanding Received Echo Power
Understand radar basics: radiated power, antenna gain, radar cross section, effective aperture and why received power drops as 1/R^4.
NB-IoT Antenna ESD and Surge Protection
NB-IoT antenna ESD and surge protection guide: low-capacitance diodes (ULC3311CDN, ULC0511CDN30) and GDTs for IEC 61000-4-5.
Adaptive Radar Beam Scheduling Strategies and Criteria
Explore adaptive radar beam scheduling strategies and criteria for optimizing phased array radar systems and resource allocation.
Antenna Design Guide for Efficient Wireless
EDA-driven guide: shrink a Bluetooth IoT antenna to 53% and gain ~6 dB by optimizing rigid-flex, matching network, grounding, and mounting.
RF Learning: Common Questions and Answers
Practical RF design Q&A: PA saturation, GaN/ADS convergence, Doherty, LNA matching, load-pull, MMIC layout and simulation tips.
IQ Mismatch Causing Image Interference in Zero-IF Receivers
Learn how IQ gain and phase mismatches in zero-IF receivers create image interference and how image rejection relates to gain/phase errors.
NR Frame Structure and Flexible Subframe Design
Huawei NR frame structure design: flexible numerologies, coexistence, subframe scaling, TDD/configurable HARQ, unlicensed and MIMO considerations.
Integrated Sensing-Communication-Computing Use Cases
Integrated sensing-communication-computing with 5G/Wi-Fi and AI for smart homes, transport, cities, healthcare, and drone monitoring.
How to Conceal an HF GP Vertical Antenna
Learn how to hide an HF ground-plane vertical inside a foam and fiberglass mast or flagpole, with design tips, materials, and RF tuning advice.