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.

NR Frame Structure and Flexible Subframe Design

Huawei NR frame structure design: flexible numerologies, coexistence, subframe scaling, TDD/configurable HARQ, unlicensed and MIMO considerations.

Terahertz Technology: Global Development Status

Terahertz waves explained: properties, sources, detectors, communication, imaging and future applications in sensing, security and high-speed links.

Why Modulate Signals? Common Linear Modulation Types

Learn why modulation adapts baseband signals to bandpass channels, definitions, AM/FM/PSK/QAM, linear vs nonlinear methods and purposes.

FM Demodulation Circuits and Characteristics

Learn FM demodulation: FM-to-AM conversion, resonant discriminators like Foster-Seeley and ratio detectors, and limiter roles in radio audio.

Types of Network Communication and Transmission Media

Explore network communication types, wired vs wireless, TCP vs UDP, and transmission media like twisted pair, coaxial, fiber and radio waves.

Bluetooth Adapter vs Receiver vs Transmitter Explained

Understand Bluetooth adapter vs receiver vs transmitter - what they do and how to choose by compatibility, audio quality, range and battery.

TDD vs FDD Duplexers Explained

Learn how duplexers enable simultaneous transmit/receive, compare TDD vs FDD, and understand filters, circulators, and spectrum trade-offs.

RF SNR Calculation and Simulation

Learn how to calculate and simulate RF link SNR: power-based and FFT-based methods, MATLAB snr usage, and practical examples for realistic channels.

LEO Satellite Communication: Basic Principles

Explore LEO satellite communication architecture, main components, operation steps and benefits like low latency and global connectivity.