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.

Check the lab for false radiated emissions

If you see emissions that you can't explain, look beyond for EUT to other equipment in the lab. Read More...

Data architecture in IoT: Identifying and breaking down silos

A typical design would connect one type of device via a secure gateway to a device management platform, and from there to a series of specific data services. But what if you wish to evolve and add a second type of device to your infrastructure? Read More...

Making fog computing sensors clearly reliable

With fog computing adding more intelligence and better communications at the edge, the opportunity arises to acquire more real-time sensor reliability insight. Read More...

Understanding RS-485 passive fail-safe biasing

Design successful fail-safe biasing networks with these equations for calculating the resistor values and the maximum possible bus loading caused by transceivers for single and dual fail-safe terminations. Read More...

Life as a system designer in 2076

With AI backing up the engineer, design becomes simply a matter of intent. Read More...

Discussion of the IoT must stratify

The term IoT is too encompassing for discussions about its many markets. Read More...

The homes of EDN

Take a tour of EDN's office locations through the years, including the home of the print collection. 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...

Designing high-speed analog signal chains from DC-to-wideband

This real system solution example presents an overview on the importance of common mode signals and how to properly level shift the amplifier front end. 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...

1982 editorial about computer security gets it right

Review a 1982 editorial about computer security, and contemplate the future 60 years from now as artificial technology combines with the Internet of Things. Read More...

RF design in the 21st century

To better understand field programmable radio frequency devices, let’s consider how a typical project might run today. Read More...

Ultra-wideband I/Q demodulator improves receiver performance

The Linear Technology LTC5586 high linearity I/Q demodulator has more than 1GHz, –1dB flatness bandwidth, supporting the fast approaching 5G wireless standard. Read More...

US DOT’s Smart City Challenge: Setting transportation standards

The U.S. Department of Transportation is dropping $40 million to define what it means to be a smart city—and that’s in only one location. Here’s a look at what has to work together to make a city of the IoT future well, smart. Read More...

LEDs will inherit the world

In 60 years, all lighting functions will be handled by LEDs, and it will be a substitute for Wi-Fi. Read More...

The Moto 360: Premature obsolescence out of design necessity?

Smart watch batteries can’t be user-replaceable without impacting their water resistance, size, and weight, which causes premature obsolescence when battery life issues occur. Read More...

EDN predictions for 2006, 10 years later

We look back on predictions made in 1981 that looked 25 years into the future to 2006. For EDN's 60th, we look with the perspective of an additional ten years. 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...

Advanced analytics will put big data to good use

A big data report from Technavio has identified emerging near-term trends, of which advanced analytics is the most compelling. Read More...

NI vector signal transceiver to be major weapon in the fight for 5G

Larry Desjardin dives into the new National Instruments VST, and explains why it could be called Very Slick Technology. Read More...

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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...

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Bluetooth module enhances IoT security

Laird’s BLE652 Bluetooth V4.2 and NFC certified radio module offers robust security and easy programming for enterprise IoT applications. Read More...

Ultra-wideband I/Q demodulator improves receiver performance

The Linear Technology LTC5586 high linearity I/Q demodulator has more than 1GHz, –1dB flatness bandwidth, supporting the fast approaching 5G wireless standard. Read More...

Kit demos multimode wireless charger

EPC’s 9121 wireless power-charging demonstration system simplifies the evaluation process of using eGaN FETs and ICs for multimode charging. Read More...

Fiber-optic modules form versatile transmission system

PFO-100R/T fiber-optic receivers and transmitters from Link Electronics enable 3G/HD/SD-SDI or ASI fiber-optic transmission. Read More...

Software enables one-button network testing

Anritsu’s SEEK MX100003A GUI software allows the creation of detailed test configurations for one-button execution on Network Master testers. Read More...

>> SEE ALL

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...

Seeking the secrets of a satellite receiver

DirecTV set-top-box design focuses on modularity for the mass market. Read More...

>> SEE ALL

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...

Network lifecycle management and the Open OS

The bare-metal switch ecosystem and standards are maturing, driven by the Open Compute Project. Pica8’s Steve Garrision sees Linux-based network OS software as transforming network economics and innovation for switches, just as it has done for servers. Read More...

Marvell shrink-wraps IoT gateway product

Marvell came to the International CES to pitch a ready-to-customize home server/home networking/IoT gateway system, called “Smart Home Cloud Center.” Read More...

>> SEE ALL

Check the lab for false radiated emissions

If you see emissions that you can't explain, look beyond for EUT to other equipment in the lab. Read More...

Data architecture in IoT: Identifying and breaking down silos

A typical design would connect one type of device via a secure gateway to a device management platform, and from there to a series of specific data services. But what if you wish to evolve and add a second type of device to your infrastructure? Read More...

Life as a system designer in 2076

With AI backing up the engineer, design becomes simply a matter of intent. Read More...

Discussion of the IoT must stratify

The term IoT is too encompassing for discussions about its many markets. Read More...

The homes of EDN

Take a tour of EDN's office locations through the years, including the home of the print collection. Read More...

1982 editorial about computer security gets it right

Review a 1982 editorial about computer security, and contemplate the future 60 years from now as artificial technology combines with the Internet of Things. Read More...

US DOT’s Smart City Challenge: Setting transportation standards

The U.S. Department of Transportation is dropping $40 million to define what it means to be a smart city—and that’s in only one location. Here’s a look at what has to work together to make a city of the IoT future well, smart. Read More...

The Moto 360: Premature obsolescence out of design necessity?

Smart watch batteries can’t be user-replaceable without impacting their water resistance, size, and weight, which causes premature obsolescence when battery life issues occur. Read More...

Building the IoT: connectivity and security

For the IoT to succeed, connectivity and security still need to mature. Read More...

Advanced analytics will put big data to good use

A big data report from Technavio has identified emerging near-term trends, of which advanced analytics is the most compelling. Read More...

>> SEE ALL

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