ESC

Wireless/Networking

Janine Love
Senior 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.

5G base station architecture, Part 1: Evolution

I thought that now would be a good time to review, with you the EDN design audience readership, where we are at technically with the formation of 5G technology in light of the recent Brooklyn 5G Summit that took place on April 8-10, 2015 jointly organized by Nokia Networks and the NYU Wireless research Center at Polytechnic School of Engineering at New York University. Read More...

Replace IR sensing with proximity detection

Proximity Detection using native characteristics of capacitive touch solutions can help reduce BOM, NRE, and manufacturing costs, and improve form factor and maximize profits. Here’s how. Read More...

Clocking wideband GSPS JESD204B ADCs

As high speed signal acquisition applications using multiple Analog to Digital Converters (ADCs) increase in complexity, each converter’s complementary clock solution will dictate the dynamic range and capacity of the system’s potential. Read More...

History of jitter, Part 1: the early years

There's no simple, straight path through the history of jitter. Rather, it's a story of numerous instruments, inventors, and twists and turns. Read More...

Advanced radiated emissions troubleshooting setups with the Rigol DSA815

Many product designers and EMI engineers are using the popular Rigol DSA815 spectrum analyzer for EMI troubleshooting and pre-compliance testing. I’d like to demonstrate the instrument settings and measurement features I most commonly use when troubleshooting radiated emissions in the 30 to 1000 MHz region. You’ll find these useful for either near field probing or testing emissions using a nearby EMI antenna. 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...

Simplified kurtosis computation detects signal interference

The statistical kurtosis operation, reinterpreted and implemented on an FPGA for this Design Idea, can detect various forms of interference in RF and other signals. Read More...

ZigBee and Thread move towards mesh network interoperability

On April 2, the Zigbee Alliance which consists of members consisting of silicon manufacturers, module providers and software developers on a global scale who adhere to the Zigbee standard, agreed to work together with the Thread Group whose goal is to make available the best means to control and connect products for the Smart Home. Read More...

Not your grandfather’s ADC: RF sampling ADCs offer advantages in systems design

Ever since the first commercial data converters were made, the insatiable need for faster and faster data rates meant that the data converter development had to keep pace. The latest avatar of the ADC is the RF sampling ADC with sampling speeds in the GHz realm. Read More...

Review: The Vectawave VBM2500-3 RF amplifier

Recently, several of my clients have been requesting help with pre-compliance testing in the 10 to 50 V/m range, well beyond what the simple TPI or Windfreak RF synthesizers alone can muster. So, I’ve been continuing to look for small low-cost RF power amplifiers that can help me achieve these higher power levels. Read More...

LXI digitizers reach 5 Gsamples/s

Networked systems are available in two, four, or eight channels at 1.5 GHz bandwidth. Read More...

Rethinking energy performance

Increase app coverage, lower energy; this white paper outlines some of the ways telecom operators can take a look at the whole network and not just the “box” to improve the overall infrastructure power efficiency. Read More...

Audio Precision supports Dante pro networked audio

The company's APx58x Series, APx52x Series, APx555 and APx515 audio analyzers now let you test and characterize audio transported on Dante Ethernet-based networks. Read More...

TI integrated high speed SoC including Digital Front End and JESD204B

Throughout my 42 year career in electronics, I have seen the battle of portions of FPGA solutions in telecom infrastructure being replaced by Graychip’s Digital Pre-Distortion IC solution, saving power, cost and size in highly dense base station PC cards. Then, years later, emerging FPGA technology replacing such optimized IC solutions as the Graychip Digital Pre-Distorion IC as that technology leap-frogged the customized solution. Read More...

Tear Down: The Propagating Plane Wave

Understanding the plane wave. All you need is the right picture. Read More...

Chasing 5G: Pizzacato, sigma delta and other architectures

“Outside-the-box” ideas about radically different architectures will emerge to meet the very difficult demands of higher speed and bandwidth radio at much lower power that 5G will need to be successful. Read More...

Shatter bottlenecks in WLANs and keep legacy infrastructure

Here’s how installed cable can still achieve multi-gigabit data rates in the enterprise. Read More...

De-embed transmission lines with FIR filters

This DI uses MATLAB to design de-embedding filters which clean up high-speed signal measurements. Read More...

OIF demonstrates 50 Gbps signals using two modulations

Two videos from OFC 2015 show how backplanes and capper cables are capable of handling 50 Gbps signals. Read More...

Keysight BERT adds adjustable ISI

The M8062A module for Keysight's J-BERT lets you test receivers at speeds to 32.4 Gbps while simulating intersymbol interference from copper trace lengths. Read More...

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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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IoT-ready Smart Lighting manager ICs feature integrated daylighting, spectral management and multi-sensor support.

Ams's new Smart lighting manager ICs support network-commanded dimming, daylighting and other basic smart lighting functions as well as an autonomous mode which only relies on a local or remote host for configuration and exception handling. Unlike most of their counterparts, they have highly-accurate built-in light sensors which enable precise daylighting, lumen maintenance, and in the case of the AS7221, color tuning. In addition, the same sub-$10 solution that drives the lighting system can also serve as a low-cost platform for many other Smart Building services. Read More...

Wireless MCU advances smart home and IoT designs

Marvell has launched the 88MZ300, an IEEE 802.15.4/ZigBee wireless microcontroller SoC offering RF performance that more than doubles the transmission range and reduces power consumption by 50% over Marvell’s previous generation 88MZ100 SoC. Read More...

LXI digitizers reach 5 Gsamples/s

Networked systems are available in two, four, or eight channels at 1.5 GHz bandwidth. Read More...

Audio Precision supports Dante pro networked audio

The company's APx58x Series, APx52x Series, APx555 and APx515 audio analyzers now let you test and characterize audio transported on Dante Ethernet-based networks. Read More...

TI integrated high speed SoC including Digital Front End and JESD204B

Throughout my 42 year career in electronics, I have seen the battle of portions of FPGA solutions in telecom infrastructure being replaced by Graychip’s Digital Pre-Distortion IC solution, saving power, cost and size in highly dense base station PC cards. Then, years later, emerging FPGA technology replacing such optimized IC solutions as the Graychip Digital Pre-Distorion IC as that technology leap-frogged the customized solution. 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

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...

Implement a VXLAN-based network into an SoC

Here’s how to eliminate bottlenecks in hyperscale cloud datacenter SoCs with VXLAN-based networks over 10G Ethernet IP Read More...

5 Bluetooth devices for the body at CES

At a pre-CES Bluetooth event, wearables and fitness devices were the stars of the show, with a few neat medical applications making waves. Read More...

How to virtualize network functions

Here’s how to use network functions virtualization (NFV) to take network functions that sit in dedicated appliances and relocate them as virtual instances, leading to increased flexibility, reduced CapEx and OpEx, and increased innovation. Read More...

Envelope tracking makes CMOS PAs possible in 4G smartphones

A look at how to improve the efficiency of CMOS PAs using envelope tracking. Product data includes performance testing using products from Nujira and Peregrine Semiconductor. Read More...

Test challenges for USB 3.1 SuperSpeedPlus

Testing for USB 3.1 involves not only measuring traditional eye diagrams, but also RF analysis using spectrum analyzers, time domain reflectometry, transmission characterization using S-parameters, and the new requirement for loopback receiver testing. Here's how to do it. Read More...

Slash SoC power consumption in the interconnect

A modular approach to SoC interconnect slashes power consumption with unit-level clock gating. Read More...

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DesignCon 2016 opens call for papers

It’s time to sharpen your virtual pencils and submit your ideas for next year’s DesignCon. If your work concerns signal integrity, power integrity, or the interference between the two in high-speed designs, then DesignCon is the conference for you to show your work and get the feedback of your peers. Read More...

Advanced radiated emissions troubleshooting setups with the Rigol DSA815

Many product designers and EMI engineers are using the popular Rigol DSA815 spectrum analyzer for EMI troubleshooting and pre-compliance testing. I’d like to demonstrate the instrument settings and measurement features I most commonly use when troubleshooting radiated emissions in the 30 to 1000 MHz region. You’ll find these useful for either near field probing or testing emissions using a nearby EMI antenna. Read More...

7 takeaways on embedded security

Jacob reveals some lessons learned from attending the reverse-engineering security session at ESC Boston. Read More...

ARM TechCon opens call for proposals

Proposals now being accepted for ARM TechCon 2015, which will take place November 10-12, 2015 Read More...

First three rules of IoT security

Security for an IoT design involves a myriad of decisions and actions, but these three form the foundation of a successful design effort. Read More...

Review: The Vectawave VBM2500-3 RF amplifier

Recently, several of my clients have been requesting help with pre-compliance testing in the 10 to 50 V/m range, well beyond what the simple TPI or Windfreak RF synthesizers alone can muster. So, I’ve been continuing to look for small low-cost RF power amplifiers that can help me achieve these higher power levels. Read More...

Promising hardware hampered by buggy software

WD's router is perhaps the most blatant yet example of a longstanding phenomenon; tremendous hardware potential hampered by buggy and otherwise underperforming software. Read More...

OIF demonstrates 50 Gbps signals using two modulations

Two videos from OFC 2015 show how backplanes and capper cables are capable of handling 50 Gbps signals. Read More...

Apple Watch details begin to emerge

Post-Apple event spokesperson comments and developer leaks often provide useful fodder to fill in any gaps. Here's what we've recently learned about the Apple Watch. Read More...

Inverse Fourth Power

Radar echoes from remote targets decay in inverse proportion to the fourth power of the distances to those targets. A quick look at the physics of the situation makes the reason for this clear. Read More...

>> SEE ALL

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