RF Basics: What is a Phase-Locked Loop (PLL)?
If you tear down any modern wireless device—whether it is a 5G base station, a commercial satellite transceiver, or even your smartphone—you will find a...
RF Basics: Understanding the Relationship from VSWR to Return Loss
If you are stepping into the world of Radio Frequency (RF) engineering, one of the first and most critical concepts you will encounter is impedance...
RF Basics: What is Frequency Hopping Spread Spectrum (FHSS)?
In modern wireless communications, the airwaves are crowded. Devices operating in the globally available ISM (Industrial, Scientific, and Medical) bands, such as the 2.4 GHz...
RF Basics: Why Signal Speed Matters — Understanding Velocity Factor (VF)
In a vacuum, electromagnetic waves travel at the speed of light (c ≈ 300,000,000 m/s). However, once those waves enter a coaxial cable, they slow...
RF Basics: Understanding the Far Field in Antenna Testing
When measuring antenna performance, placing your test probe too close will completely distort your data. To capture accurate, real-world metrics for gain, directivity, and radiation...
RF Basics: Understanding Watts to dBm Conversion
For anyone entering the field of radio frequency (RF) engineering or telecommunications, one of the first and most confusing hurdles is understanding power measurement. While...
RF Basics: What is a Low Noise Amplifier (LNA)?
In radio frequency (RF) engineering, much of the attention is often given to the massive power amplifiers that transmit signals across long distances. However, the...
What is an RF Power Amplifier? Core Principles for Testing Engineers
In the world of Electromagnetic Compatibility (EMC) and radio frequency testing, the signal generator is only half of the equation. To create the intense electromagnetic...