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Top 20 Viewed Articles
Here are the most popular articles during the past 14 days. |
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Locked Your Keys In The Car? Get Out Your Cell Phone 50678 There has been a rumor going around in one of those dreadful e-mails that your friends and co-workers feel compelled to forward to you all the time. If you lock your keys in your car and you have a remote keyless entry system, you can get outside help to open the car if you have your cell phone with you. — Louis E. Frenzel May 2003 [Column] Hack Your Way To WLAN Security 43100 Recent global events have emphasized the need for adequate security—both in the real world and in cyberspace. Hacking into a wireless 802.11b network is often easy. In fact, it's too easy. So how do corporate IT administrators or small-office... — John Blyler April 2003 [Design Application] A Modified Constant Modulus Algorithm Enters The Scene 6964 Modern communications systems employ bandwidth-efficient modulation techniques, such as quadrature amplitude modulated (QAM). With QAM, the amplitude and phase of a sinusoidal signal are both varied to transmit digital information. Most transmission... — Maher Arar April 2004 [Design Application] Decrypt The Keys To Wireless Security 10583 Broadband wireless networking has become a technically feasible alternative for enterprise-wide IT systems. Compared to traditional wide-area networking, it offers an increasingly flexible and cost-effective approach. Plus, the costs for the... — Scott Palmquist March 2005 [Design Application] The Path To 4G Will Take Many Turns 22077 A race is going on right now and it's a heated one. It's a race to the next generation of untethered communications—4G mobile broadband wireless. The prize for reaching the finish line first or even finishing at all could be huge. Yet that finish line keeps moving, as the fourth generation (4G) isn't yet fully defined. In fact, spectrum won't be allocated until 2007. Standards probably won't be complete until the year after that. Right now, though, many teams across the globe are... — Noah Schmitz December 2004 [Design Application] Access Isn't Always The Killer Application 8977 A great number of usage models fall under the "wireless" umbrella. For some users, access to a network infrastructure is the killer application. For others, the "killer app" is the capability to communicate independently between devices within a... — Charles Knutson August 14, 2008 [News] Companies Team Up To Develop eWLB Packaging 9287 STMicroelectronics, STATS ChipPAC, and Infineon Technologies have agreed to jointly develop the next generation of embedded wafer-level ball-grid array (eWLB) technology. The R&D effort will focus on using both sides of a wafer to provide solutions for semiconductor devices with a higher integration level and a greater number of contact elements. — Staff March 2004 [Design Application] 3G-324M Helps 3G Live Up To Its Potential 15555 Broadband wireless is now a reality. Towers are converting to 3G throughout Europe and Asia. 3G-enabled phones are flying off the shelf and service providers are making a substantial commitment to the new format. At the same time, consumers are... — Eli Orr July/August 2004 [Design Application] Cell Phones Demand Better Battery Life 9508 Just a few short years ago, the expectations of cell-phone users centered around one capability: being able to reliably conduct voice calls while they were away from a wired telephone set. Since then, impressive technological advances have been... — Walter Croce June 2003 [Design Application] Don't Fall Into Circuit Protection's Pitfalls 5830 Often, little things make a big difference in a successful design. When it comes to telecommunications equipment, the incorrect specification of a circuit breaker can lead to unnecessary system shutdowns, superfluous costs, and the under-protection... — Kenneth Cybart February 2005 [News] Wi-Fi Network Security Goes Enterprise-Wide 2513 Wireless local-area networks (WLANs) bring a host of advantages to the enterprises that deploy them. They foster creativity of the most positive sort by enabling users to roam freely within the network's range. Unfortunately, however, that same free access can leave the enterprise open to mischief or worse. With 60% of enterprises having some sort of WLAN access, the Gartner Group recently predicted that WLANs pose the largest security problem through 2008. Enterprises with WLANs have seen... — Lisa Maliniak November 2, 2007 [News] LNA Boasts 20.5-dBm Gain, 0.8-dBm Noise Figure 12039 Taking advantage of the company’s advanced, low-power SiGe BiCMOS process, the MAX2659 high-gain, low-noise amplifier (LNA) from Maxim Integrated Products achieves a 20.5-dB gain and a noise figure of 0.8 dB. The device hits these performance levels while maximizing the input-referred 1-dB compression point and third-order intercept point at -12 dBm and -2 dBm, respectively. — Staff January/February 2003 [New Products] PA Reaches New Heights 1380 > The RFS P2020 power amplifier (PA) is said to offer the highest efficiency and range for the Wireless Local Area Network (WLAN) 802.11b and the draft 802.11g standards. This multimode PA is a high-performance InGaP HBT integrated circuit. It is... — Staff November/December 2003 [Column] Balance Hacker Crime And Punishment 4606 Is it really in society's best interest to impose severe punishment on young hackers? This question came about after the recent arrest of Jeffrey Lee Parsons. He is the teenager who wrote the variant of the Blaster worm that brought down thousands of... — John Blyler July/August 2004 [Design Application] Will RF Detectors Measure Up To 3G? 14802 Many systems need to measure radio frequency (RF) power. Some examples include communications transceivers, instrumentation, industrial controls, and radar. Sometimes, these RF-power measurements are required to assure compliance with... — Rick Cory , et al. November 2, 2007 [News] IR Receivers Feature Long Range, High Noise Immunity 13819 Designed for long-range operation in infrared remote control, data transmission, and light-barrier applications, the TSOP85 series of surface-mount infrared receiver modules targets portable systems requiring very small component profiles. — Staff August 11, 2008 [Editor's Note] The End Of WSD And The Beginning Of MD&D 7460 There’s an old proverb saying that when one door closes, another opens. Well, this August’s issue of Wireless System Design (WSD) is the last. And while that is the bad news for those of you who have stayed with this publication, I have some good news as well. A new publication will emerge in September. Called Mobile Dev & Design (MD&D), this monthly online publication will provide similar and even expanded coverage of wireless. So don’t fret. — Louis E. Frenzel May 2003 [News] On The Wireless Front 4942 Monroe, New York Acqiris USA has recently come to market with a 21-slot crate known as the CC121. It enables high-speed digitizer systems to be configured with up to 80 channels in a single, standard,... — Staff March 2003 [Design Application] Apply Service-Quality Management To Wireless Networks 6785 Traditionally, mobile network operators and service providers have relied on network-management platforms to optimize the performance of their networks. The telecommunications landscape is changing, however, with the advent of 2.5G and 3G... — Laure Reillier April 2004 [Design Application] Memory Motivates Cell-Phone Growth 14980 As cellular phones incorporate the multi-function capabilities that enable web-access and digital-camera functionality, their supporting memory subsystems grow increasingly complex. For engineers in today's cell-phone market, one of the main design... — Masashi Yokotsuka |
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