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DECEMBER 2002 | |
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December 2002 - In This Issue [Cover Story] 400-MSamples/s DDSs Run On Only +1.8 VDC Direct-digital synthesizers (DDSs) are flexible integrated circuits (ICs) capable of answering a host of design challenges. Programmable DDS ICs are agile frequency sources capable of low phase noise and good spurious performance. Until now, DDS... — Jon Baird [News] SUSS’s Brand Of Vermont Technology Vermont is not normally associated with high-technology industry. But, in addition to skiing, tourism, and a famous cider mill, the tiny town of Waterbury Center, VT is also home to SUSS MicroTec, Inc., manufacturer of some of the world's most precise... — Jack Browne [News] Reference Designs Liven Wireless Show Wireless circuit and system designers have been developing something of a tradition in February: furthering education at the risk of romance. If this connection seems vague, it is due to the timing of the Wireless Systems Design Conference & Expo,... — Jack Browne [Design Features] Oscillators: A New Look At An Old Model Traditional models of high-frequency oscillators have guided design engineers for many years. Recently, design approaches have focused on transmission analysis, with many benefits compared to negative-resistance approaches. By adopting a... — Stan Alechno [Design Features] Designing Antennas For Indoor Millimeter-Wave Use Demand for bandwidth has been on the rise, pushing regulatory agencies such as the US Federal Communications Commission (FCC) to explore the use of millimeter-wave bands for commercial applications. Already, wireless local-area networks (WLANs) have... — Dr. A. Kumar [Design Features] Build LNAs With An Integrated Approach Low-noise amplifiers (LNAs) that are small and low in cost, while still maintaining noise figures of typically 0.8 dB at personal-communications-services (PCS) frequencies, are key requirements for cellular base stations. While a variety of modular... — Bo Jensen [Design Features] Modulated S-Parameters Tackle Wideband Devices Wireless communication systems continue to progress to wideband modulation formats. In particular, third-generation (3G) wireless and wireless local-area networks (WLANs) present extraordinary increases in channel bandwidth. As a result, designers are... — John Lukez [Product Technology] Integrated Power Amp Covers GSM/DCS/PCS Cellular handset designers yearn for amplification that is compact and simple to use. The +3.5-VDC model RF3133 PowerStar™ power-amplifier (PA) module from RF Micro Devices (Greensboro, NC) may just be the ideal PA solution, since it measures... — Bobby L. Johnson , et al. [Product Technology] Diversity Antenna Module Broadens Wireless Range Cross-compatibility is the standout feature of the DualNet mini-peripheral-component-interface (MPCI) Internal Antenna Module from Ethertronics (San Diego, CA). By operating on the 2.400-to-2.485-GHz and 5.150-to-5.825-GHz frequency bands, the MPCI... — Nancy Konish [Editorial] A Time For Remembrance Time is continuous, and sometimes likened to a river, with eddies and currents flowing within the whole. But try as we might, we cannot stop it, only pause in our own thinking to reflect over some portion of it and how it has impacted our lives and... — Jack Browne |
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