Incremental Improvements Define The 2012 Mobile World Congress |
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Louis E. Frenzel, Editor in Chief
The usual players all showed up at this year’s Mobile World Congress in Barcelona with lots of improved devices, but no real game-changing breakthroughs... |
Micrel Licenses ARM922T Core
Micrel Semiconductor Corp. (www.micrel.com) and ARM Ltd. (www.arm.com) announced that Micrel has licensed the ARM922T core. Micrel has utilized the core...
Errata
An error was made in the article Indoor propagation issues for wireless LANs, September 2002, p. 40. Equation (1) reads: -38 - [10log(distance)] Equations...
RF Micro Devices Opens Office in China
RF Micro Devices Inc. (www.rfmd.com) announced the opening of a new sales and customer support office in Beijing, China. The sales and customer support...
WLAN RFICs Test Challenges
Consumers' insatiable thirst for high data rates coupled with mobility is creating rapid growth in WLAN market requirements and device volume. In turn, this demand has created unprecedented challenges for RFIC testing....
Ansoft Partners With Carnegie Mellon
Ansoft Corp. (www.ansoft.com) announced the formation of an educational partnership with Carnegie Mellon University's (www.cmu.edu) new center for wireless...
Philips and Sasken Partner for 2.5G/3G Enhancements
Royal Philips Electronics (www.philips.com) announced a partnership with Sasken (www.sasken.com), a telecommunications software solutions provider. Philips'...
An Optimal Mixer Matching Design Technique Under Large Signal Pumping
A mixer design protocol that improves the conversion efficiency by defining the circuit parameters for maximum RF and IF matching. By applying this technique under different levels of large signal pumping, the optimum mixer of reference is defined for the non-linear element....
National and ARM Announce Strategic Relationship
National Semiconductor Corp. (www.national.com) and ARM Ltd. (www.arm.com) announced a strategic business relationship to jointly develop and market power...
BUSINESS BRIEFS
Ansoft Corporation Second Quarter Results Ansoft Corp. (www.ansoft.com) announced its financial results for its second fiscal quarter ended October 31,...
Relating Cascaded Noise Figures to Real-world Performance
A common issue that often arises is, after the design and build of a receiver, it is determined that the sensitivity is worse than of the calculated model....
Open-collector Mixer Design for Next Generation RFICs
Many RF front-end integrated circuit (IC) devices used in today's handsets employ a differential open-collector (OC) output structure for the active mixer stage. This configuration allows the customer flexibility in setting the output impedance, conversion gain, and linearity of the mixer. These front-ends can be used effectively with both differential and single-ended surface acoustic wave (SAW) filter configurations. This article describes techniques for the design of output network circuitry...
Progress, or Lack of, for That Last Mile
In the days before the Internet, xG and GHz computers, the last mile wasn't much of a target of opportunity. Rather it was viewed as simply a communications link that could be filled only by wireless technology. And, in those days, the last mile meant a VHF or UHF (and some 800 MHz) short-haul licensed link that was designed to add telephone-like communications to areas that weren't served by landlines. There was no data, no Internet and no opportunity, perceived or otherwise. Furthermore, in so...
Range Estimation for Short-range Event Transmission Systems
Design of short-range wireless event transmission devices, including, for example, security systems, medical emergency buttons and instrument fault detectors as well as remote keyless entry devices, has become relatively easy, thanks to the availability of complete transmit and receive modules and highly integrated chips. However, estimation of system performance, either during the stage of choosing the appropriate module or during actual system design, remains a difficult task....
Card Adds Bluetooth Technology to Mobiles
Silicon Wave, a supplier of integrated circuits for wireless personal area networks, announced that Toshiba Corporation selected its Bluetooth radio modem IC for the newly launched Toshiba SDIO ......
Business Briefs
Laird, BMI join forces — Laird Technologies and BMI will combine their technical, geographic and human resources to become supplier to the electronics industry globally. The merged product lines will provide customers with total shielding needs as well as local manufacturing, sales, service, and support worldwide. The immediate objective will be to continue uninterrupted service and support....
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