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The digitally-controlled attenuator (DCA) is a fundamental element of any system that combines microwave components and embedded digital control in its architecture. It consists of a bank of fixed attenuator pads, each of which can be switched in or out to adaptively select the optimum signal level for a...
Over the last few months I've had conversations with authors and reviewers which reveal that some elements of our editorial policy would be well put down in writing for all of us to consider. With a clearer picture for ourselves, we can better project encouragement to colleagues when we...
For those who want a change from technical meetings occupied with graduate student excercises and slides full of equations, there is the Allerton Antenna Applications Syposium. This is a brief report on the most recent, held September 20-22, 1978 at Robert Allerton park, about 25 miles west of Champaign-Urbana,...
With its Bridging Gaps theme, the 11th European Microwave Week couldn’t be held in a more suitable city than Amsterdam. Known as the ‘Venice of the North’, the canals that give it that name are spanned by 1281 bridges. They range from the famous Magere Brug (Skinny Bridge; see...
As European Microwave Week (EuMW) returns to its inaugural host city of Amsterdam, we would like to take the opportunity to outline the history of EuMW, the role of the European Microwave Association (EuMA) and the latest developments. The story starts with Peter Clarricoats who, on joining GEC in...
The following list is complete at the time of going to press. ABF Elettronica SRL — 1015 ACAL Technology — 205 Acceleware Corp. — 1011 Actipass Co. Ltd. — 1215 Advanced Control Components Inc. — 1203 Advantage Business Media — PubCorner Aeroflex — 514 AFT Microwave GmbH — 1416...
In wireless handset design, specifically power amplifiers (PA), there is constant pressure to improve time-to-market while maintaining high yields. To meet these demands, designers need to evaluate current design practices and identify areas for improvement. Presently, most PA designers spend a great deal of time bench-tuning to optimize circuits....
The use of passive repeaters for mobile communications is often discarded because of the inherent losses that these systems introduce. However, the radio signal coverage of indoor areas poses a particularly complex problem in buildings with heavily reinforced concrete walls and shielded or underground infrastructure, which introduce great attenuation....
In two-way radio applications, achieving constant efficiency across a wide power level is an important design criterion to be considered. Constant efficiency in this context refers to efficiency improvement at low power level while maintaining high efficiency at high power level. Switched gain stage and drain supply adjustment methods...
Murata Electronics North America , an innovator in electronics and the largest global supplier of ceramic passive components, introduced the new LXMS31 series MAGICSTRAP™ for complete coverage in the Ultra High Frequency (UHF) band (850 to 965 MHz). This advanced Radio Frequency Identification (RFID) Tag is designed to be...
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