Wireless/Networking

Richard Quinnell
Technical Editor
A resources site and community for engineers involved in designing communications or networking-related products and systems. Find design tips, new product information and discussion on wired and wireless networking (Ethernet, ZigBee, Wi-Fi etc.), telecom (3G, 4G, LTE etc.), and application areas like the smart grid, smart homes, the Internet of Things, and cloud computing.

Connected cars: IoT’s value proposition

One area of IoT where the value proposition is relatively obvious is in connected cars, but how will the data exchange work? Read More...

Cycles per second: A historical perspective

Heinrich Hertz proved the existence of electromagnetic waves, for which we associate his name with cycles-per-second. Read More...

Understanding and designing differential filters for communications systems

Understand how to transfer a single-ended filter design to a differential filter design, and optimize your PCB design. Read More...

What I learned about LTE-M at the MEMS & Sensors Executive Congress 2016

MEMS & Sensors Executive Congress keynote speaker Cameron Coursey, from AT&T, presented "The Future of Sensors and MEMS in the Internet of Things." Read More...

System tests PAM4 signals to 56 and 64 Gbaud

Anritsu combines three instruments into an integrated system for making BER measurements up to 56 Gbaud PAM4 while generating signals to 56 Gbps PAM4. Read More...

Hands-on with BLE, apps, and ARMduino: The Simblee

RF Digital's Simblee (Simple BLE) offers a compelling and unique way to develop Bluetooth-enabled embedded systems alongside instantly customizable companion apps. Read More...

Plug and play mesh IoT sensor system unveiled

The Njord sensor module is part of a system that works straight out of the box. Read More...

RF MEMS switch passes 14 GHz signals

The ADGM1304 quad RF MEMS switch from Analog Devices could replace electromechanical RF switches, improving reliability and saving board space. Read More...

Teardown: Wireless keyboard and remote senses motion

The Mohu Channels wireless keyboard is also a remote control with motion-activated on-screen cursor capability; see how it works. Read More...

Oscilloscope option analyzes 100 GbE link-training signals

The HSSLTA 100 GbE link-training software option for the Tektronix 70 GHz DPO70000SX oscilloscope lets you automate measurements on signal equalization at the highest data rates in use today. Read More...

Add waveforms to your PXI system

Spectrum Instrumentation's 1, 2, and 4-channel AWGs let you add analog signals to an automated test system to simulate actual conditions. Read More...

Enterprise IoT: a standards-based approach to the connectivity and security challenge

The IoT is so all encompassing that standards are playing catch up. Here’s a look at open standards and what it will mean to IoT security and connectivity. Read More...

High-voltage PXI oscilloscope lets you create your own instruments

The PXIe-5164 from National Instruments adds FPGA technology to let you program your own instrument after digitizing signals. It also supports a wide range of voltage inputs. Read More...

Design with QDR-IV for high-performance networking systems, part 1

In part 1 of this multi-part series, we’ll discuss the two types of QDR-IV memory, clocking, read/write operations, and banking. Read More...

An NFC-enabled multi-parameter bio-signal monitor for wearable systems

In-home monitoring is a growing trend, where patients monitor their vital signs on their own. Bio-signal sensor data can be transmitted wirelessly through NFC to a smartphone for remote monitoring by a healthcare professional. Read More...

Marketers talk funnier than ever

As we keep coming up with new buzzwords, marketers keep misusing the English language. Read More...

The basics of Bluetooth Low Energy (BLE)

Bluetooth Low Energy is the intelligent, power-friendly version of Bluetooth wireless technology making smart gadgets compact, affordable, and less complex.  Read More...

The trouble with relying on the cloud

A cloud-centric product strategy delivers an abundance of benefits for developers and purchasers alike ... until the cloud goes down, that is. Read More...

How one researcher cracked the iPhone 5c

Larry Desjardin describes how one researcher cracked the iPhone 5c using test and measurement equipment. Read More...

The speed of thought

The three timescales of thought dictate the time it takes to hit the brakes or to run from a tiger, but it takes longer to have an idea and much longer to learn how to do things quickly. Read More...

>> SEE ALL

Splitting and arbiting a bidirectional serial bus

Serial buses like I2C are widespread. This Design Idea demonstrates ways of splitting each bidirectional line into two unidirectional ones – and why you might want to. Read More...

NRZ to AMI converter uses single supply

Convert serial data to AMI format with this simple Design Idea. Read More...

Monitor a differential pair for valid & fault conditions

Monitor the state of a differential communications line with this Design Idea. Read More...

Avago Tech Note: High-speed optocouplers enable industrial networks

Communicate at up to 25Mb/s over (e.g.) PROFIBUS. Read More...

LTC Design Note: Robust 10MHz reference clock input protection circuit and distributor for RF systems

Design a protected 10MHz reference input without degrading phase noise. Read More...

Postprocessing converts Spice to RF analyzer

Designers of RF and high-frequency products need a simulator that can predict noise figure at a given frequency, minimum noise figure, optimum reflection coefficient for noise, and noise resistance. Read More...

Simple circuit suits quadrature detection

A circuit generates an output voltage that you can measure to determine whether two sine waves have a quadrature relationship. Read More...

Low-cost RF synthesizer uses generic ICs

You can make an AM-band frequency synthesizer from standard components. Read More...

Achieve simple IR-data transmission from a PC’s serial port

By transmitting appropriate hex values from a PC's serial port to a pair of IR LEDs, a remote-control IR receiver can enable 38.4-kHz data transmission. Read More...

>> SEE ALL

Tektronix updates PAM4 validation platform

The latest release of Tektronix’ PAM4 transmitter analysis software adds error detection, SNDR measurement, and FFE/DFE equalization. Read More...

Keysight introduces three PXI chassis

The three chassis give you options when developing automated test applications. Read More...

PXIe modules switch signals from DC to microwave

The SentinelIEX series from Ametek VTI Instruments cover general-purpose switching, matrices, and RF/microwave switching in multiple switch configurations. Read More...

RF power amplifier generates 100 W

Pasternack’s PE15A5033F GaN-based power amplifier delivers 100 W of saturated output power over a frequency range of 0.7 GHz to 2.7 GHz. Read More...

Hands-on with BLE, apps, and ARMduino: The Simblee

RF Digital's Simblee (Simple BLE) offers a compelling and unique way to develop Bluetooth-enabled embedded systems alongside instantly customizable companion apps. Read More...

>> SEE ALL

Teardown: Wireless keyboard and remote senses motion

The Mohu Channels wireless keyboard is also a remote control with motion-activated on-screen cursor capability; see how it works. Read More...

Teardown: Apple iPad Air packs faster A7

Apple's iPad Air packs a somewhat faster A7 processor but few other surprises. Read More...

Dissecting the Intel 710 Enterprise SSD

The design for this drive, which uses multilevel-cell NAND flash for primary storage, emphasized endurance, reliability, and power efficiency. Read More...

Teardown: Ethernet and EMP take out TV tuner

In this teardown we look for evidence that an EMP generated by a lightning bolt coupled to Ethernet cable, acted as an antenna, and zapped relevant ICs inside a TV tuner. Read More...

Dissecting Disney's MagicBand

Disney is no stranger to technology, but one of the really cool tools they've put out fairly recently is the MyMagic+ system or MagicBand. Read More...

The Nexus One: Google hits a smartphone home run

More than a year after its unveiling, the Nexus One remains a leading-edge product, and represents a substantial leap in capability beyond the T-Mobile G1. Read More...

Wireless high-definition video: silicon consolidation that's maximal

The Wireless Gigabit Alliance's 60-GHz-based high-definition wireless-video-transport scheme may be on the way, but SiBEAM's pioneering approach and multiple product generations are already on the scene. Read More...

Sony Ericsson’s Xperia X10 mini: the teardown skinny

Does this smartphone address the market need for a simpler handset that will make and take calls, handle e-mail and Web surfing, and fit comfortably into a normal-sized pocket? Read More...

Inside a cellular femtocell

The solution to smartphone data traffic is a problem for femto-basestation designers. Read More...

Plugging hardware-based compression into a server

Prying Eyes gets an early look at a forthcoming PCIe-based hardware accelerator for the open-source GNU-zip algorithm. Read More...

>> SEE ALL

Design with QDR-IV for high-performance networking systems, part 1

In part 1 of this multi-part series, we’ll discuss the two types of QDR-IV memory, clocking, read/write operations, and banking. Read More...

The basics of Bluetooth Low Energy (BLE)

Bluetooth Low Energy is the intelligent, power-friendly version of Bluetooth wireless technology making smart gadgets compact, affordable, and less complex.  Read More...

Building wearables that sense, think, and communicate, part 2

In Part 2 of this series, additional design challenges for wearables, including field upgrade, energy harvesting, connectivity, and special features are discussed. Read More...

Building wearables that sense, think, and communicate, part 1

This series provides guidance in meeting the myriad design challenges of building interactive wearable devices. Part 1 will identify the challenges and offer help in the way of feature-rich MCUs. Read More...

Wireless networking will cover the world

The next 60 years in wireless will be more exciting than the last 60 years, with everything from 10G to intrusion tolerant networks and photonic Li-Fi. Read More...

Implementing Bluetooth Smart modules in industrial IoT applications

Bluetooth Smart technology is one of the easiest and most cost-effective ways to implement IoT. Read More...

2D semiconductors take aim at optical communications

Developments in the lab offer glimpses of a technology that could change the future of high-performance optical links. Read More...

Flexible RF Front End Designs for Mid-Tier and Regional Smartphones

New flexible design techniques are shortening development times and increasing design reuse as mobile phone standards proliferate. Read More...

A look into Bluetooth v4.2 for Low Energy Products

Bluetooth LE v4.2 introduces some important specification changes. Here's a quick summary. Read More...

Can all the wireless charging standards coexist?

When it comes to wireless charging, the question for many developers is whether or not the various standards like Qi and A4WP can coexist, and how to design for that. Read More...

LTE-A Release 12 transmitter architecture: analog integration

In part 2 of a series, Damian Anzaldo explains how LTE-Advanced Release-12 shapes eNode transmitter architecture, specifically in terms of the analog integration challenge. The article includes an example using a MAX5868 RF DAC transmitter from Maxim Integrated. Read More...

Understand LTE-A Release 12 transmitter architecture: Part 1

A technical look at the market forces driving global adoption of the LTE standard and trends in 4G radio access technology. Topics include carrier aggregation (CA), spatial multiplexing, and active antenna systems (AAS). Read More...

>> SEE ALL

Connected cars: IoT’s value proposition

One area of IoT where the value proposition is relatively obvious is in connected cars, but how will the data exchange work? Read More...

Cycles per second: A historical perspective

Heinrich Hertz proved the existence of electromagnetic waves, for which we associate his name with cycles-per-second. Read More...

What I learned about LTE-M at the MEMS & Sensors Executive Congress 2016

MEMS & Sensors Executive Congress keynote speaker Cameron Coursey, from AT&T, presented "The Future of Sensors and MEMS in the Internet of Things." Read More...

Enterprise IoT: a standards-based approach to the connectivity and security challenge

The IoT is so all encompassing that standards are playing catch up. Here’s a look at open standards and what it will mean to IoT security and connectivity. Read More...

Marketers talk funnier than ever

As we keep coming up with new buzzwords, marketers keep misusing the English language. Read More...

How one researcher cracked the iPhone 5c

Larry Desjardin describes how one researcher cracked the iPhone 5c using test and measurement equipment. Read More...

The trouble with relying on the cloud

A cloud-centric product strategy delivers an abundance of benefits for developers and purchasers alike ... until the cloud goes down, that is. Read More...

The speed of thought

The three timescales of thought dictate the time it takes to hit the brakes or to run from a tiger, but it takes longer to have an idea and much longer to learn how to do things quickly. Read More...

FFTs and oscilloscopes: A practical guide

Understanding how oscilloscopes perform Fast Fourier Transforms lets you get the right results. Read More...

A glimpse of the future of IoT sensors

Sensors are the backbone of the IoT and the MEMS & Sensors Executive Congress shares visions of the technological and application developments shaping the future of design. Read More...

>> SEE ALL

FEATURED RESOURCES