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Whitening Filters Help Low-Power Radios Tackle Issues Caused by Long Identical Bit Sequences

Whitening Filters Help Low-Power Radios Tackle Issues Caused by Long Identical Bit Sequences

Learn how whitening filters solve problems in low-power radios when transmitting long identical bit sequences. Explore their significance in protocols like BLE and ZigBee.


ATT and GATT—How Bluetooth LE Devices Store Data

ATT and GATT—How Bluetooth LE Devices Store Data

Learn how ATT and GATT protocols help Bluetooth LE devices store and manage data, making it easier for connected devices to work together seamlessly.


Lossy Transmission Lines: Introduction to the Skin Effect

Lossy Transmission Lines: Introduction to the Skin Effect

This article introduces high-frequency conductor losses in transmission lines caused by a phenomenon known as the skin effect.


Vulnerabilities and Attacks on Bluetooth LE Devices—Reviewing Recent Info

Vulnerabilities and Attacks on Bluetooth LE Devices—Reviewing Recent Info

To understand known vulnerabilities and attacks on Bluetooth LE devices, we review some studies from the past 4+ years.


Introduction to Lossy Transmission Lines

Introduction to Lossy Transmission Lines

This article will help you understand losses in high-frequency transmission lines that include traces on PCBs. We will also investigate how these losses impact signal propagation and the quality of digital signals.


PCB Material Properties and Their Impact on Performance of High Frequency Boards

PCB Material Properties and Their Impact on Performance of High Frequency Boards

Understanding PCB material parameters such as relative permittivity and loss tangent allows us to discuss some important considerations for choosing the right material when designing a high-speed/high-frequency application.


Gain Definitions for the Y-Factor Method of NF Measurements: Available Gain or Insertion Gain?

Gain Definitions for the Y-Factor Method of NF Measurements: Available Gain or Insertion Gain?

The Y-factor method is a widely used technique for measuring the gain and noise figure (NF) of RF components. This article will help you understand the differences between the insertion gain and the available gain, while avoiding potentially significant errors when measuring the noise figure.


Securing BLE Connections—An Overview of the Security Protocol

Securing BLE Connections—An Overview of the Security Protocol

Learn about Bluetooth LE's security features and tools, how to use them, and understand how they keep connections secure.


Breaking Down the BLE Link Layer—The 7 States of Bluetooth LE Radio

Breaking Down the BLE Link Layer—The 7 States of Bluetooth LE Radio

Explore the seven states of the Bluetooth LE radio, how the link layer state machine manages the LE radio, and the roles of these states in wireless communication.


Explore the Y Factor Method for Noise Figure Measurement

Explore the Y Factor Method for Noise Figure Measurement

Learn about measuring the noise figure (NF) using the Y factor method. We'll dive into using this to find the noise factor, how to calibrate for noise temperature, and much more.


Characterize RF Noise Components Using Equivalent Noise Temperature

Characterize RF Noise Components Using Equivalent Noise Temperature

Learn another way to characterize RF noise components using noise temperature and how this concept clears up how noise figure measurement instruments actually work.


Understanding the RF Noise Figure Specification

Understanding the RF Noise Figure Specification

Take a closer look at the definition of the RF noise figure and discuss some subtleties to help avoid erroneous interpretations of this specification.


Exploring Single Stub Impedance Matching Through Smith Chart Examples

Exploring Single Stub Impedance Matching Through Smith Chart Examples

Learn about impedance matching using a single stub, transmission lines, and immittance Smith chart examples.


Designing a Wideband Analog Voltage and Current Meter

Designing a Wideband Analog Voltage and Current Meter

Design a wideband analog multimeter to measure AC voltages and currents from 20 Hz to 1 MHz with a selectable sensitivity from 1 mV to 100 V, while the ammeter has a selectable current sensitivity of 10 mA to 10 A.


Projects May 03, 2023 by John Woodgate
Learn Stub Tuning With a Smith Chart

Learn Stub Tuning With a Smith Chart

Learn about impedance matching stub tuning using a Smith chart, as well as single and double stub tuning, impedance contour, and the "forbidden region" of a Smith chart.


A Brief Introduction to Slot Antennas

A Brief Introduction to Slot Antennas

Learn about slot antennas, namely their history, characteristics, and electromagnetic (EM) behavior for low-voltage, small-form-factor electronic devices.


Designing L-type Matching Networks Using Series and Parallel RC and RL Circuits

Designing L-type Matching Networks Using Series and Parallel RC and RL Circuits

Learn about l-type impedance matching equations through the quality factor (Q factor) of RC and RL circuits and the series-parallel conversion of these circuits.l-


Using the Smith Chart to Design a T and Pi Matching Network

Using the Smith Chart to Design a T and Pi Matching Network

Learn more about L-sections and impedance matching by designing T and Pi matching networks using a Smith chart.


L-type Matching Network Basics—Examining L Network Frequency Response and Bandwidth

L-type Matching Network Basics—Examining L Network Frequency Response and Bandwidth

Learn about two-element networks (L-sections or L-networks), how they transform one impedance to another, their frequency response, estimating their bandwidth, and their limitations leading to T networks.


Design a Two-element Matching Network Using the ZY Smith Chart

Design a Two-element Matching Network Using the ZY Smith Chart

Learn about the immittance Smith chart (ZY Smith chart), the effect of adding series and parallel components, impedance matching, and finding a two-element matching network.