RF & Microwave Industry News

* Two Novel Radar Vehicle Detectors for the Replacement of a Conventional Loop Detector

Introduction to intrusive and non-intrusive radar vehicle detectors developed at 24 GHz
TECHNICAL FEATURE Two Novel Radar Vehicle Detectors for the Replacement of a Conventional Loop Detector In this article, intrusive and non-intrusive radar vehicle detectors, compatible with existing inductive loop detectors (ILD) without any modification of the communication algorithm, have been developed at 24 GHz. The intrusive detector is based...
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A Ka-band Planar Printed Antipodal Linearly-tapered Slot Antenna

Measurement, fabrication and design of a 27 to 32 GHz Ka-band planar antipodal linearly-tapered slot antenna
TECHNICAL FEATURE A Ka-band Planar Printed Antipodal Linearly-tapered Slot Antenna A Ka-band (27 to 32 GHz) planar antipodal linearly-tapered slot antenna (ALTSA) is designed, fabricated and measured. The numerical simulation was performed by 3D finite-element method (FEM). The printed ALTSA has been realized by using an RT/Duroid printed circuit...
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Complex Coaxial-waveguide Transitions at Millimeter-waves

Description of two types of coaxial-waveguide transtitions experimentally investigated over a wide frequency range at millimeter-waves
TECHNICAL FEATURE Complex Coaxial-waveguide Transitions at Millimeter-waves Millimeter-waves have been used in commercial applications during the last decade as a result of the growing development of microwave multipoint distribution systems, local multipoint distribution systems, and digital audio and video broadcasting. In spite of many proposed simulation methods, experimentation remains...
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Adaptive Feedforward Amplifier Linearizer Using Analog Circuitry

Description of a typical feedforward architecture along with the simulation results of a compensation technique using the least mean square algorithm
TECHNICAL FEATURE Adaptive Feedforward Amplifier Linearizer Using Analog Circuitry Alfonso J. Zozaya, Eduard Bertran Albertí and Jordi Berenguer-Sau Dept. of Signal Theory and Communications Polytechnic University of Catalonia Barcelona, Spain Nowadays, feedforward is the most effective and broadly used linearization technique employed in modern multi-carrier communications systems. Different versions,...
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MEMS for RF/Microwave Wireless Applications: The Next Wave ­ Part II

Description of the possibilities afforded by MEMS in system integration and novel architectures
TUTORIAL MEMS for RF/Microwave Wireless Applications: The Next Wave ­ Part II Microelectromechanical systems (MEMS) technology is on the verge of revolutionizing RF and microwave applications.1 The requirements of present day and future RF and microwave systems for lower weight, volume, power consumption and cost with increased functionality, frequency...
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THE BOOK END

THE BOOK END * RF and Microwave Wireless Systems Kai Chang Wiley-Inter-science 339 pages; $79.95 ISBN: 0-471-35199-7 RF and microwave wireless systems are currently at the cutting edge of technology. Already, it is possible to communicate or transmit information instantly all over the world and this field is expanding...
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Catalog Update

CATALOG UPDATE * Short Form Catalog This eight-page catalog features the company's waveguide couplers, waveguide components, waveguide terminations, phase shifters, variable attenuators, coaxial components and custom products. Products photographs, schematics, specifications, ordering information and a company overview are provided. Advanced Technical Materials Inc. (ATM), Patchogue, NY (631) 289-0363. Circle...
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Around the Circuit

AROUND THE CIRCUIT INDUSTRY NEWS * Taconic announced that the closing of Rogers' acquisition of Taconic, which the parties had hoped would occur by the end of April, did not occur. The parties have encountered important differences over key terms in their agreement , and at this point it...
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Commercial Market

THE COMMERCIAL MARKET Nokia and Bertone-SKF Present Vision of the Future at Geneva Motor Show Nokia unveiled a future in-car wireless communication scenario at the 71st Geneva Motor Show, according to NewsEdge Corp. The aim of Nokia's contribution to the Bertone-SKF "Filo" concept car was to evoke ideas about...
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ERRATUM

ERRATUM In "MEMS for RF/Microwave Wireless Applications: The Next Wave," a tutorial by Randy J. Richards and Héctor J. De Los Santos that appeared in the March issue of Microwave Journal, a number of figures were published without proper credits. Figures 2, 3, 4, 5, 7, 10c, 11, 13a,...
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