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Wireless/RF Technical Articles
Test & Measurement
The Packet Concept: High-Level Synchronization for Data Links
Learn about (for lack of a better term) packetization, a technique that facilitates robust data transfer in optical, RF, and long-distance-digital communication systems.
December 30, 2016
Manchester Encoding: What Is It, and Why Use It?
Learn about Manchester encoding, a simple and effective way to improve high-speed or wireless digital communication.
December 23, 2016
The Cyclic Redundancy Check (CRC): Finding—and Even Correcting—Errors in Digital Data
This technical brief explains what a CRC is and how you can use it to make your digital communication more robust.
December 22, 2016
Understanding Automatic Gain Control
How do designers cope with a system that has highly variable input amplitude yet requires fairly constant output amplitude? Let’s take a look....
November 22, 2016
Introduction to Wireless Power Transfer
Wireless Power Transfer holds the promise of freeing us from the tyranny of power cords. This technology is being incorporated into all kinds of devices and systems....
October 28, 2016
How to Design a Bluetooth Low Energy Circuit with Sensor Technology
Tutorial on designing a Bluetooth Low Energy (BLE) circuit with the ability to measure 9-axis motion, humidity, and temperature.
October 14, 2016
Antenna Basics: Radiation Patterns, Permittivity, Directivity, and Gain
Antennas allow information to be transferred to distant locations. In the second part of this Antenna Basics series, you will learn more about the physics of how antennas work....
October 12, 2016
Max & Math: Maxwell’s Equations in Relativistic Times
Maxwell's equations, which summarize the interaction of electromagnetic fields, have always been described using the "math of the times." Using tensors, they can be given in two equations!...
October 11, 2016
An Introduction to Antenna Basics
Antennas are used to transmit and receive electromagnetic energy. This article covers basic antenna theory.
August 24, 2016
Learning About Differential Quadrature Phase Shift Keying (DQPSK) Modulation
This technical brief explains what differential QPSK is and why it can be advantageous compared to ordinary QPSK.
August 22, 2016
Understanding Quadrature Phase Shift Keying (QPSK) Modulation
This technical brief covers the basic characteristics of a digital modulation scheme known as quadrature phase shift keying.
August 17, 2016
The How and Why of Energy Harvesting for Low-Power Applications
Harvesting energy from non-conventional sources has received an increased interest as designers look for alternative power sources. Even though the power is usually harvested in small amounts,...
June 23, 2016
Classification of Signals used in Electrical Engineering
Classifying signals is a way to organize the signals that surround us. It focuses design, testing requirements, measurement tools, and expected results. There are many ways to classify...
April 27, 2016
Linear Amplitude Modulation Applications
In this article, we'll delve into amplitude modulation and what it's used for. Also, we will differentiate between communication methods that do and do not use modulation....
April 04, 2016
An Overview of the Analysis and Transmission of Aperiodic Signals
A signal that does not repeat itself after a specific interval of time is called an aperiodic signal. By applying a limiting process, the signal can be expressed as a continuous sum (or...
January 20, 2016
An Intro to Adaptive Echo Cancellers
A introduction to adaptive echo cancellers using Matlab simulation.
December 07, 2015
The Fundamentals of Wi-Fi Antennas
Amateur radio operators ("hams") have long said, "If you want a bigger signal, put up more metal and put it up higher." Antennas for Wi-Fi are no exception....
December 04, 2015
Charles R. Hampton
Transmission Lines: From Lumped Element to Distributed Element Regimes
Delving further into the transmission line concept, the boundary between treating the line as a single lumped circuit element and using the distributed circuit parameters is investigated with a...
November 28, 2015
Everything You Need to Know About Direct Digital Synthesis
Direct Digital Synthesis is used to generate precise analog waveforms that can quickly change frequencies. It's used in test equipment, spread spectrum techniques and to enable frequency...
November 20, 2015
Introduction to the Transmission Line
Explanation of what a transmission line is, and the conditions under which it exists. Uses lumped element model to derive differential equations and manipulates the equations to get telegraph...
November 12, 2015
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