ESC Silicon Valley

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.

Review: The Aaronia BicoLOG 30100X and HyperLOG 7060 EMI antennas

The majority of my work includes troubleshooting and pre-compliance testing for clients and I’m always on the lookout for useful EMI equipment to make my job easier. In this review I'll be trying out the Aaronia BicoLOG 30100X (30 to 1000 MHz active antenna with attached 40 dB preamp) and a HyperLOG 7060 (700 MHz to 6 GHz log-periodic). Read More...

Maximizing performance and integration in applications requiring isolated SPI

Optocouplers are not as simple to design with as a digital isolator, especially the simple low speed optocouplers. A crash course in how Optocoupler CTR (Current Transfer Ratio) changes with time and temperature and how it affects speed in the application may be required. Read More...

Workshop opened my eyes to the latest in test

Attending Keysight's Advanced Measurement Lab was a worthwhile experience, one that leaped me into the latest measurement technology. Read More...

Record and analyze RF and wireless signals

The RP-6100 series from Averna lets you record hours of RF and wireless signals for analysis. Read More...

Powering Ethernet, Part 2: Optimizing Power Consumption during Standby Operation

Power consumption during the standby operation is also of concern, especially when designing to specifications such as the ‘One Watt Initiative.’ Read More...

Silicon photonics: Will the hare finally catch the tortoise?

Silicon photonics is sort of like fusion energy, always right around the corner. But this time, it's for sure. Read More...

JTAG Boundary scan: Four test cases

Learn how an engineering design consulting company used Boundary scan to solve problems in four microprocessor-based boards. Read More...

Optimizing clock synthesis in small cells and heterogeneous networks

Mobile network operators are increasingly turning to small cell base stations to expand coverage, increase capacity and enable network densification in congested, high-traffic urban environments. Small cells are low-power radio access nodes that can be used by operators to offload mobile data to Internet Protocol (IP) networks and enable more efficient use of radio spectrum in 4G/LTE applications. Read More...

MIMO over-the-air testing ready to roll

Here's what you need to know to get started with MIMO OTA testing. Read More...

Powering Ethernet, Part 1: Designing for Low Power Consumption in Operation

Analyzing power consumption in Ethernet circuitry shows it to be far from efficient. This is in part because Ethernet consumes similar energy during both traffic and idle periods, and in fact, idle periods typically account for more than 97 percent of the time. Read More...

Which buses control your test instruments?

Unless you're still living in the dark ages, you probably use some communications bus to control test equipment and collect measurements. Which do you use? There are numerous choices, so tell us which you use in our informal poll. Read More...

Stagger Tuning

The venerable superheterodyne is very much with us. The intermediate frequency amplifier, the IF amplifier or the IF stage, requires alignment of the IF transformers for optimum performance so let's look at a single section IF stage's properties. Read More...

Interleaving ADCs: Unraveling the mysteries

Time interleaving is a technique that allows the use of multiple identical analog-to-digital converters (ADCs) to process regular sample data series at a faster rate than the operating sample rate of each individual data converter. Read More...

LVDS display bridges and automated measurements, part 1

OpenLDI modules control displays in vehicles and their components need characterization. In part 1 of 2, we discuss the fundamentals of LVDS signals, the information they carry, and the components needed to drive displays. Read More...

Millimeter wave wireless for 5G

A primer on 5G Technology and the potential use of millimeter wave transmission Read More...

5G to disrupt the test equipment market

Larry Desjardin reviews 5G technology, and predicts modular instrumentation will play a leading role. Read More...

Copper-wire analyzers gain bonded-pair test capabilities

Aimed at copper-wire provisioning and maintenance technicians, select models in the HT1000/2 series of handheld wire analyzers from Megger can now perform bonded-pair testing for all DSL services, from ADSL through to vectored VDSL2. Read More...

Correlation: An overlooked oscilloscope measurement

The correlation function is a useful signal-processing tool that helps determine periodicity, signal-to-noise ratio, propagation delay, and signal detection in unknown waveforms with poor SNR. Read More...

Which software automates your tests?

A poll on EE Times asks which of several software packages engineers use to automate tests. Tell us which you use. Read More...

When will ZigBee RF4CE land in Europe?

ZigBee RF4CE (Radio Frequency 4 Consumer Electronics) is the popular wireless communication protocol that enables interoperability between remote controls and a variety of TVs, set-top boxes, gateways and other home networking and entertainment systems from different manufacturers. 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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Record and analyze RF and wireless signals

The RP-6100 series from Averna lets you record hours of RF and wireless signals for analysis. Read More...

Copper-wire analyzers gain bonded-pair test capabilities

Aimed at copper-wire provisioning and maintenance technicians, select models in the HT1000/2 series of handheld wire analyzers from Megger can now perform bonded-pair testing for all DSL services, from ADSL through to vectored VDSL2. Read More...

IoT-ready smart lighting manager ICs feature 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...

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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...

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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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Review: The Aaronia BicoLOG 30100X and HyperLOG 7060 EMI antennas

The majority of my work includes troubleshooting and pre-compliance testing for clients and I’m always on the lookout for useful EMI equipment to make my job easier. In this review I'll be trying out the Aaronia BicoLOG 30100X (30 to 1000 MHz active antenna with attached 40 dB preamp) and a HyperLOG 7060 (700 MHz to 6 GHz log-periodic). Read More...

imec Power Model Minimizes Power Consumption of Mobile Networks

Data traffic is increasing sharply, new applications and services are heavily driving energy consumption; networks are optimized for capacity not energy. Read More...

Silicon photonics: Will the hare finally catch the tortoise?

Silicon photonics is sort of like fusion energy, always right around the corner. But this time, it's for sure. Read More...

MIMO over-the-air testing ready to roll

Here's what you need to know to get started with MIMO OTA testing. Read More...

5G to disrupt the test equipment market

Larry Desjardin reviews 5G technology, and predicts modular instrumentation will play a leading role. Read More...

IoT security may lie in numbers

The old adage that there is strength in numbers may well apply to providing security in the Internet of Things (IoT). Read More...

My new home office: Update 4

Water damage, a new monitor, and a new personal laptop make big changes since Update 3 in 2012. Read More...

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...

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