Passive Components

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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...

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...

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...

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...

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...

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...