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PRODUCT FEATURE Low Phase Noise Voltage Tunable Oscillators Paratek Columbia, MD Driven by the VCO market's insatiable need for lower phase noise and wider tuning ranges, a new line of voltage tunable oscillators (VTO) has been introduced with superior performance in these areas. The new VTOs operate at fundamental...

PRODUCT FEATURE Miniature, High Performance GPS RF SAW Filters Location-based products using Global Positioning Satellite (GPS) signals are poised to revolutionize wireless service. Implementation of federally mandated mobile subscriber location requirements is fueling the rush to market. Meanwhile, manufacturers plan to capitalize on the presence of GPS-enabled mobiles by...

TECHNICAL FEATURE High Speed Analysis and Optimization of Waveguide Bandpass Filter Structures Using Simple Neural Architectures At microwave frequencies, from about 7 to 60 GHz, inductive irises are very often used as coupling networks between half-wavelength cavities in rectangular waveguides to develop very selective low loss bandpass filters. This...

TECHNICAL FEATURE Power Efficient MMIC Frequency Triplers The design of an efficient frequency tripler for an S-/X-band communications receiver is described. An approach for optimizing the tripler for best power efficiency is presented. The tripler topology consists of the harmonic generator circuit, a bandpass filter and an amplifier. A...

TECHNICAL FEATURE SiGe Power Amplifier ICs with SWR Protection for Handset Applications Joe Pusl and Srikanth Sridharan IBM San Diego RFIC Design Center Encinitas, CA Philip Antognetti, David Helms, Anurag Nigam, James Griffiths, Kenneth Louie and Mark Doherty IBM Boston RFIC Design Center Lowell, MA In recent years there...

EUROPEAN SUPPLEMENT A Long Range View of Short Range Wireless Systems Richard Mumford Microwave Journal European Editor The development of short range wireless systems, particularly Bluetooth and wireless local area networks (WLAN) has captured the industry's imagination, if not the market that was initially predicted. Bluetooth technology originated in...

THE BOOK END * Modulation and Coding for Wireless Communications Alistair Burr Prentice Hall/Pearson Education 352 pages; $79 ISBN: 0-201-39857-5 Wireless communications have become one of the most rapidly growing industries in the world. This book is concerned with the principles of modulation and coding as they apply to...

AROUND THE CIRCUIT INDUSTRY NEWS * Endwave Corp. acquired M/A-COM's Broadband Wireless Business Unit (BBU), initiating a strategic relationship with Tyco Electronics and making Endwave the most complete RF subsystem supplier for millimeter-wave radio OEMs. * Aeroflex Inc. has acquired TriLink Communications Corp. for approximately 1.2 million shares of...

THE COMMERCIAL MARKET New All-silicon Chips for Wireless Base Stations Newsedge reports that Lucent Technologies has announced the development of an all-silicon chipset for wireless base stations. The announcement was made at the recent Solid State Circuits Conference in San Francisco. These new chips will be used in base...

ON THE COVER Low Cost Directional Couplers Mini-Circuits Brooklyn, NY Ever expanding applications of RF and microwaves for wireless and cable applications have revived the development efforts of components at these frequencies. There is a continuing demand to reduce size and cost, and to improve performance and quality at...