Subscribe to Features
View Sample

FREE WDD Email Newsletter

National Semiconductor Reaches Deals with GESolar & QC Solar

June 17, 2010 10:03 am | Articles | Comments

National Semiconductor Corp. recently announced that it has reached new deals related to its SolarMagic technology with Green Energy Solar (GESolar) and QC Solar. SolarMagic monitors and maximizes the energy harvest of each individual PV panel through a combination of advanced algorithms and leading-edge mixed-signal technology.

After Record-Breaking 2009, US Wind Markets Face a Growth-Constrained 2010

June 17, 2010 10:03 am | Articles | Comments

Following a record-breaking year of capacity additions in 2009 - with 9.8 GW of wind projects installed - the US wind market finds itself confronting a growth-constrained 2010 and a near-term market landscape wrought with increased competition, according to a new market study, US Wind Power Markets and Strategies: 2010-2025 from IHS Emerging Energy Research.

EPA Honors Three Universities for Significant Energy Savings

June 17, 2010 10:03 am | Articles | Comments

WASHINGTON- The U.S. Environmental Protection Agency (EPA) is recognizing three universities with the Combined Heat and Power (CHP) awards for generating power and thermal energy while saving energy, lowering greenhouse gas emissions and decreasing air pollution, which can reduce impacts on the public’s health.


Substantial Energy Efficiency Provisions in Lugar Energy Bill a ‘Solid Foundation,’ says Alliance

June 17, 2010 10:03 am | Articles | Comments

Washington, D.C., -- A new energy bill introduced by Sen. Richard Lugar (R-Ind) wisely uses energy efficiency as the core of its provisions, the Alliance to Save Energy said today. The Lugar Practical Energy and Climate Plan focuses on money-saving efficiency policies designed to create long-term energy savings for cars and trucks, new buildings and appliances, existing homes and commercial buildings and industry.

Company Reaches Milestone by Shipping Enough Product for 15,000 Megawatts of Wind Power

June 17, 2010 10:03 am | Articles | Comments

DEVENS, Mass.,(BUSINESS WIRE) -- American Superconductor Corporation, a global power technologies company, announces in conjunction with Global Wind Day 2010 that it has achieved a significant milestone by supporting the production of more than 15,000 megawatts (MW) of wind power worldwide with its proprietary power electronic solutions.

WiMAX and the Effects of Multipath

June 14, 2010 1:05 pm | Articles | Comments

By Ray Chadwick, Berkeley Varitronics Systems, Inc. WiMAX signals suffer from the effects of multipath and exhibit broadband fading characteristics that are very apparent in the spectrum of the received WiMAX signal (see Figure 1). It’s not a trick; OFDM modulation does not eliminate fading and is not always received with a flat spectrum.

Solutions for Nonlinear Characterization of High-Power Amplifiers

April 22, 2010 5:20 am | Articles | Comments

By Keith Anderson, Agilent Technologies click to enlarge Figure 1. NVNA block diagram. High-power RF amplifiers are used in telecommunications, biomedical, and military systems. With output power levels ranging up to 1kW, these amplifiers are typically designed to operate near or into compression in order to provide the maximum output power possible.

The Emergence of JESD204A in Data Converters and Low Power FPGAs in Wireless Infrastructure Equipment

April 14, 2010 12:12 pm | Articles | Comments

The increasing data throughput demands on base stations have led to increased radio unit component cost and power, with associated printed circuit board and interface complexities, as well as heightened signal integrity concerns.


Bluetooth Low Energy – Not Just Another Radio Frequency Networking Protocol

April 8, 2010 1:19 pm | Articles | Comments

By Brian Blum, Texas Instruments Bluetooth Low Energy (BLE) is fast-becoming the hottest buzz-word in low-power wireless communications. Within five years, we have seen a variety of standard and proprietary networking protocols emerge, begin to show promise, and occasionally open up new market spaces and fundamental opportunities for technical innovation.

What is Energy Harvesting and How Does it Work?

April 8, 2010 1:19 pm | Articles | Comments

By Michele Kinman, Energy Harvesting Forum click to enlarge Energy harvesting is the process of capturing and accumulating byproduct energy as the energy becomes available, storing the energy for a period of time and conditioning it into a form that can be used later – such as operating a microprocessor with in its limits.

Playing Nicely Together in Wireless Design

April 8, 2010 1:18 pm | Articles | Comments

By Mike Woodward, Communications Industry Marketing Manager, The MathWorks click to enlarge Figure 1. Silo development methodology. The use of silo-based methods in wireless systems design often introduces problems in the development process.

Printed Displays offer New World of Design Opportunities

April 8, 2010 1:18 pm | Articles | Comments

By Dennis Brestovansky, president and CEO of Aveso Displays A new world of printed electronic display technology is evolving, offering unlimited opportunities for mass consumer and industrial applications. New flexible, printed displays are increasingly being integrated into a variety of everyday products including credit cards, product packaging, home-health diagnostics and even in apparel to combat theft and counterfeit.

Benchmarking RF Front Ends Powered by DC-DC Converters Across a Discharging Battery

March 29, 2010 10:35 am | Articles | Comments

By Keith Adkins and Jackie Johnson, RF Micro Devices In the last decade mobile device users have seen unprecedented changes in technology. These changes have brought more functionality and lower cost to the overall handset market. Users are demanding more and more functionality in mobile devices, which comes at the cost of talk time.


Single Carrier FDMA in LTE

February 11, 2010 10:21 am | Articles | Comments

By Ram Asokan, Ixia SC-FDMA is a new technology used for uplink in LTE. This article explores this technology, its use in LTE and its extension from OFDM.

Challenges in Designing a New Modulation Scheme for LTE

February 8, 2010 7:30 am | Articles | Comments

Developing the LTE uplink, especially the receiver for the base station, requires complex design approaches and a significant capability in test systems. By Tim Fowler, Cambridge Consultants Ltd. click to enlarge Figure 1. Functional test equipment.

More than Residential: Femtocell Deployment Beyond the Home

February 8, 2010 7:30 am | Articles | Comments

There is great potential for ‘greater femtocells' to improve mobile coverage and capacity outside the home environment. By Rupert Baines, picoChip, Inc. Femtocells are now a commercial reality. Launches by AT&T and Vodafone, amongst others, have brought femtocells into the consumer sphere.

Wireless Basestation Design Challenges Using High-Speed, 16-bit ADCs

February 8, 2010 7:30 am | Articles | Comments

By Josh Carnes, National Semiconductor Corporation click to enlarge Figure 1. Block diagram of an IF sampling subsystem within a communications receiver. Cutting-edge 16-bit, high-speed analog-to-digital converters (ADC) can offer the very high dynamic range and low distortion levels required to meet today's most demanding wireless communications standards.

Next Generation Wireless IP Networking Applications

February 8, 2010 7:30 am | Articles | Comments

IPSec's growing importance in ensuring security and reliability in new networks By Asaf Shen, Discretix Inc. Internet Protocol Security (IPSec) provides security at the network layer of the protocol stack. By using IPSec, protection is offered to all IP packets regardless of the protocols and applications running in the upper layers of the protocol stack.

LTE Femtocell Roadmap from Concept to Reality

February 8, 2010 7:30 am | Articles | Comments

The LTE femtocell stands to serve as a key weapon in the mobile operator arsenal. By Todd Mersch, Continuous Computing click to enlarge Figure 1. Putting the puzzle together, integrated LTE femtocell silicon. The market is buzzing about the critical role of "small cells" in Long Term Evolution (LTE) deployments – femtocells, picocells and microcells.

Network Operator Acceptance Testing of LTE Devices

February 8, 2010 7:29 am | Articles | Comments

The (new/old) challenges in accelerating LTE device time-to-market. By Konstantinos Stavropoulos, Anite click to enlarge Figure 1. A representative set of lab acceptance tests that 2G/3G operators have considered. The use of wireless devices, whether handsets or data cards, has increased substantially during the last few years.

Building an FPGA-based SoC Framework for LTE Baseband Designs

February 8, 2010 7:28 am | Articles | Comments

By Akshaya Trivedi, Altera Corporation Figure 1. SoC framework and infrastructure. Radio Access Networks (RANs) are undergoing an architecture change to an all-IP flat network to reduce network deployment costs as well as to offer rich mobile applications and services at a lower end-to-end latency.

Transmitter RFIC Integration for Next Generation Wireless Infrastructure Radios

February 8, 2010 7:28 am | Articles | Comments

Leveraging highly integrated RFIC designs and high dynamic range converters helps meet the challenges of next-generation base stations. By Phillip Halford and Ed Balboni, RF Group, Analog Devices, Inc. click to enlarge Figure 1.

LTE: The Insatiable Need for Bandwidth Drives Architectural Change

February 2, 2010 10:14 am | Articles | Comments

By Manuel Uhm and Mark Quartermain, Xilinx The baseband processing function represents a key area of product differentiation for Telecommunications Equipment Manufacturers (TEMs). However, the advent of 3.9/4G systems poses a difficult challenge to TEMs, as they struggle to evolve traditional DSP-centric channel cards to meet a new set of technical and commercial challenges.

Wireless Base Stations Benefit from Signal Compression

February 2, 2010 6:17 am | Articles | Comments

For deployments by a single operator, wireless repeater systems offer more cost effective fiber transport costs. By Allan Evans, VP of Marketing, Samplify Systems ABI Research predicts that revenues for distributed antenna systems and in-building wireless systems will exceed $15B by 2013.

Designing a Wireless Heart Rate Monitor with Remote Data Logging

January 7, 2010 10:58 am | Articles | Comments

The current generation of monitors are portable heart rate sensors that have found their way into general purposes for activities such as exercise and sports. While these devices are useful for individual purposes, they do not facilitate use by a coach or manager. By Archana Yarlagadda, Cypress Semiconductor click to enlarge Figure 1.

You may login with either your assigned username or your e-mail address.
The password field is case sensitive.