Latest Wireless/RF Technical Articles

In this article, we'll learn the basics of switching-mode RF amplifiers in general and Class D amplifiers in particular.

In this article, we'll learn the basics of switching-mode RF amplifiers in general and Class D amplifiers in particular.

In this article, we explore the drawbacks of Class C operation through a performance comparison with Class A and Class B…

In this article, we explore the drawbacks of Class C operation through a performance comparison with Class A and Class B amplifiers.

This article examines the operation of the Class C power amplifier and how it compares to its Class A and Class B counterparts.

This article examines the operation of the Class C power amplifier and how it compares to its Class A and Class B counterparts.

In this article, we explore the advantages of introducing an air gap to the magnetic core of an inductor.

In this article, we explore the advantages of introducing an air gap to the magnetic core of an inductor.

In this project, we mix the old and the new by integrating present-day BLE technology with a vintage Science Fair computer kit.

In this project, we mix the old and the new by integrating present-day BLE technology with a vintage Science Fair computer kit.

Core saturation is one of the main limitations on the design of magnetic components. In this article, we explore how…

Core saturation is one of the main limitations on the design of magnetic components. In this article, we explore how different factors—particularly the number of turns—impact the core saturation of an inductor.

In this article, we learn about core saturation and why it should be avoided in most applications. We then examine how…

In this article, we learn about core saturation and why it should be avoided in most applications. We then examine how different ways of defining permeability can help us predict the saturation flux density of a magnetic core.

Eddy currents are a major loss mechanism in transformer cores. This article provides both in-depth and simplified…

Eddy currents are a major loss mechanism in transformer cores. This article provides both in-depth and simplified explanations of how core laminations work to mitigate the effects of eddy currents.

In this article, we use the concept of magnetic field energy to explore the relationship between a core's hysteresis loss…

In this article, we use the concept of magnetic field energy to explore the relationship between a core's hysteresis loss and its B-H curve.

In this article, we explore the effect of dimensional resonance on the magnetic field distribution in high-frequency…

In this article, we explore the effect of dimensional resonance on the magnetic field distribution in high-frequency ferrite cores.

The formation of eddy currents can cause problems for magnetic cores at high frequencies. To mitigate these undesirable…

The formation of eddy currents can cause problems for magnetic cores at high frequencies. To mitigate these undesirable effects, we first need to understand them.

In this article, we use the concept of magnetic field intensity to help explain how complex permeability models the…

In this article, we use the concept of magnetic field intensity to help explain how complex permeability models the losses of a magnetic core.

We analyze a Ruthroff 1:4 transformer's performance at high frequencies, then learn how to improve its bandwidth using…

We analyze a Ruthroff 1:4 transformer's performance at high frequencies, then learn how to improve its bandwidth using equal-delay networks and how to redesign the circuit for higher impedance transformation ratios.

Learn how these classic RF transformers achieve broadband impedance transformation.

Learn how these classic RF transformers achieve broadband impedance transformation.

In this article, we explore two different methods for analyzing the impedance transformation ratio of a transmission line…

In this article, we explore two different methods for analyzing the impedance transformation ratio of a transmission line transformer.

In this article, we conclude our discussion of VNAs by walking through the steps of a SOLT calibration and examining the…

In this article, we conclude our discussion of VNAs by walking through the steps of a SOLT calibration and examining the potential non-idealities of its reference standards.

The 12-term error model is a simple, effective way of modeling systematic errors in vector network analyzer (VNA)…

The 12-term error model is a simple, effective way of modeling systematic errors in vector network analyzer (VNA) measurements. Learn about this model and an associated error correction technique in this article.

In this article, we compare the scope of factory and user calibration for vector network analyzers (VNAs). We then learn…

In this article, we compare the scope of factory and user calibration for vector network analyzers (VNAs). We then learn about the types of errors that calibration techniques can't correct.

In this project article, we design a handheld gaming console with wireless multiplayer functionality using ESP8266…

In this project article, we design a handheld gaming console with wireless multiplayer functionality using ESP8266 microcontrollers. We then program a game for it with the Arduino IDE.