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Content tagged with RF/Microwave
posted in September 2008
Tall tale: Trees could power wireless networks
Design How-To  
9/30/2008   Post a comment
MIT researchers say that by harnessing the voltage difference between a tree and the ground new ultralow-power sensors can transmit sensor data from almost any tree.
Three challenges for WiMedia compliance test
Design How-To  
9/29/2008   1 comment
This article explains the concepts behind the UWB technology as well as the challenges surrounding compliance test of UWB transmitters, packet overhead, and receivers.
Bankruptcy looms for NextWave subsidiary GO
News & Analysis  
9/29/2008   Post a comment
Struggling wireless chip and systems company NextWave Wireless Inc.(San Diego, Calif.) is closing its Israel-based subsidiary, GO Networks, as part of its global restructuring.
Bluetooth headset turns to SUN and goes green
Teardown  
9/29/2008   Post a comment
Last year, I purchased a hands-free Bluetooth car kit as a Christmas gift for a family member who, as a sales rep, spends significant time talking in her car. Worried for her safety as she drives with one hand on the wheel and the other around a cell phone, I initially felt a sense of pride as she unwrapped a gift that demonstrated concern for her well-being. Sometimes, however, a buzz can be short-lived. After a quick explanation of what the gift was, I could see a bit of uneasiness creep in as
CDMA tutorial, part 1: CDMA and WCDMA
Design How-To  
9/28/2008   1 comment
Part 1 introduces CDMA and Wideband CDMA (WCDMA). Standards covered include UMTS (UTRA-FDD/UTRA-TDD), TD-CDMA, TD-SCDMA, MC-CDMA, CDMA-2000, and DS-CDMA.
Signal Integrity Engineer's Companion: The Wireless Signal--Part VI
Design How-To  
9/25/2008   Post a comment
Chapter 10 of the Signal Integrity Engineer's Companion is a discussion of new techniques in wireless signal measurement and thought-provoking ideas about signal analysis in the modern wireless environment. Part VI covers the workings of a real-time spectrum analyzer.
Introduction to Wireless Systems--A Tutorial--Part IX
Design How-To  
9/22/2008   Post a comment
Here is segment nine of a multi-part series excerpted from 'Introduction to Wireless Systems.' Chapter 4 concentrates on Radio Frequency Coverage: Systems Engineering and Design. Introduction to Wireless Systems brings together the theoretical and practical knowledge readers need to participate effectively in the planning, design, or implementation of virtually any wireless system.
Featured Course: Overview of WiMedia UWB
Design How-To  
9/22/2008   Post a comment
Here's this week's featured course. It comes from Staccato Communications, and it is part of the Embedded On Demand Center, which provides you with access to the Embedded Systems Conference class sessions.
Standards Related to RFID--Part 1
Design How-To  
9/19/2008   Post a comment
How do standards help technology adoption? What are key RFID standards? What does the EPCglobal standard mean and what is generation 2? How are standards different globally? How can you ensure compliance while standards evolve? Read the answers in this book excerpt.
Signal Integrity Engineer's Companion: The Wireless Signal--Part V
Design How-To  
9/18/2008   Post a comment
Chapter 10 of the Signal Integrity Engineer's Companion is a discussion of new techniques in wireless signal measurement and thought-provoking ideas about signal analysis in the modern wireless environment. Part V covers Fast Fourier transform analysis.
OFDM tutorial, part 2: MIMO, Turbo, and JCE
Design How-To  
9/17/2008   Post a comment
Here's how to boost OFDM performance with MIMO. Topics covered Turbo channel estimation, joint channel estimation, and adaptive bit loading.
Microchip : Automotive transceivers are LIN-SAE J2602 certified
Product News  
9/17/2008   Post a comment
The MCP2021 and MCP2022 (MCP202X) LIN/SAE J2602 transceivers are 3rd party-LIN/J2602 approved, OEM approved, and AEC-Q100 certified to meet the stringent requirements of global automotive manufacturers worldwide.
CSR claims industry's first ROM-based Bluetooth development kit with stereo DSP
Product News  
9/16/2008   Post a comment
CSR has launched BlueTunes ROM, which the company claims as the industry's first ROM-based Bluetooth development kit for stereo headsets with an integrated digital signal processor (DSP).
Group pushes Internet Protocol for sensor nets
Product News  
9/16/2008   Post a comment
Proponents of Internet Protocol for sensors networks have formed the IP for Smart Objects Alliance which already has kicked off work on setting an interoperability standard for running IPv6 on nets based on the IEEE 802.15.4 standard.
This Week's Main Course
RF & Microwave Designline Blog  
9/15/2008   Post a comment
Don't have the time or budget to travel? A new feature gives you a glance at the courses you might be missing.
RF Featured Course: RF Amps
Design How-To  
9/12/2008   Post a comment
Here's this week's featured course. It comes from Analog Devices, and it is part of the Embedded On Demand Center, which provides you with access to the Embedded Systems Conference class sessions.
ZigBee goes green with support for smart energy
Design How-To  
9/12/2008   Post a comment
A recent focus on advanced metering infrastructure (AMI) or more specifically, Smart Energy, is well positioned to open up ZigBee to become the truly interoperable global standard that has been claimed all these years.
OFDM tutorial, part 1: PAPR, ECC, and DAR
Design How-To  
9/10/2008   2 comments
Here's how OFDM works and how it is used. Topics covered include modulation techniques, Peak to Average Power Ratio (PAPR), Error Correcting Codes (ECC) and Decision Aided Reconstruction (DAR).
Signal Integrity Engineer's Companion: The Wireless Signal--Part IV
Design How-To  
9/9/2008   Post a comment
Chapter 10 of the Signal Integrity Engineer's Companion is a discussion of new techniques in wireless signal measurement and though-provoking ideas about signal analysis in the modern wireless environment. Part IV covers the vector signal analyzer and an overview of the real-time spectrum analyzer.
ASK/FSK transmitter supports multiple operating frequencies
Product News  
9/8/2008   Post a comment
The MAX7057 ASK/FSK transmitter from Maxim Integrated Products supports any frequency in the 300- to 450-MHz range with the use of a single crystal reference, and ensures that the output of the power amplifier stays matched to the antenna or load.
Mobile WiMAX PHY: Control Mechanisms and the Mobile Station
Design How-To  
9/8/2008   Post a comment
Click here if you would like to learn more about WiMAX control mechanisms and the mobile station.
Updated: Ember, Skyworks partner on Zigbee modules
Product News  
9/8/2008   Post a comment
Skyworks Solutions, Inc. and Ember Corp. will combine their RF and controller devices to create a family of modules aimed at ZigBee wireless networks, targeting a wide range of industrial and consumer applications including smart energy meters.
Introduction to Wireless Systems--A Tutorial--Part VII
Design How-To  
9/8/2008   Post a comment
Here is segment seven of a multi-part series excerpted from 'Introduction to Wireless Systems.' Chapter 4 concentrates on Radio Frequency Coverage: Systems Engineering and Design. Introduction to Wireless Systems brings together the theoretical and practical knowledge readers need to participate effectively in the planning, design, or implementation of virtually any wireless system.
Digital radio kit aids in development, test of signal processing applications
Product News  
9/8/2008   Post a comment
Colorado Electronic Product Design's digital radio kit is intended to aid in the development and test of algorithms and signal processing applications, including digital radio, modulator/demodulator development; software defined radio; high speed data acquisition and signal processing; and audio data acquisition and signal processing.
Mobile WiMAX PHY (RF) operation and measurement, Part 1
Design How-To  
9/4/2008   Post a comment
This is a multi-part excerpt from Agilent Technologies' Application Note: Mobile WiMAX PHY Layer (RF) Operation and Measurment. This part introduces the WiMAX standard and provides in-depth explanation of the IEEE 802.16 profiles.
RFID in China
Design How-To  
9/3/2008   Post a comment
On the heels of the 2008 Beijing Olympics, when the world turned to China, I thought you would enjoy looking back at how far the radio frequency identification technology industry has come in one short year. Read the expectations for China in the excerpt of this book, RFID Applied. This segment is the first look in the series that will take you around the world, from the United States to Spain to Australia to Japan to Singapore.
300 to 930MHz receiver addresses multiple bands with software
Product News  
9/2/2008   Post a comment
Designed for automatic meter reading and remote controls, Melexis has launched a frequency agile RF receiver chip dubbed the MLX71122 that addresses multiple bands using software.
Staccato launches industry's first 65nm CMOS single-chip device for UWB
Product News  
9/2/2008   Post a comment
The Ripcord2, its first 65nm UWB device that supports multiple protocols, including Wireless USB, High-Speed Bluetooth, Wireless IP and Wireless Audio/Video. In addition, several features were added to Ripcord2, including support for WiMedia Band Groups 1, 3 and 6, as well as the capability for detection and avoidance (DAA).
Introduction to Wireless Systems--A Tutorial--Part VI
Design How-To  
9/2/2008   1 comment
Here is segment six of a multi-part series excerpted from 'Introduction to Wireless Systems.' Chapter 4 concentrates on Radio Frequency Coverage: Systems Engineering and Design. Introduction to Wireless Systems brings together the theoretical and practical knowledge readers need to participate effectively in the planning, design, or implementation of virtually any wireless system.
Fraunhofer demos DAB Surround broadcast
Product News  
9/1/2008   Post a comment
At the IFA consumer electronics show in Berlin, Fraunhofer IIS demonstrates a method to transmit 5.1 surround sound across DAB radio channels. The technology is compatible with existing DAB radio.


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