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PRODUCT FEATURES Broadband Power Amplifiers for 600 MHz to 4.5 GHz System Applications Aethercomm Inc. San Marcos, CA A new line of medium and high power broadband amplifiers has been introduced that covers the 600 MHz to 4.5 GHz frequency bands. All of the power amplifiers (PA) offer medium...

PRODUCT FEATURES A Low Loss HDI Dielectric for High Frequency Modules and PCBs W.L. Gore & Associates Inc. Elkton, MD T he wireless telecommunications market continues to require denser circuitry and higher I/O count chip packages to meet ever growing performance requirements. These new requirements can only be satisfied...

COVER FEATURE Control Products for Wireless and Broadband Applications Alpha Industries Inc. Woburn, MA S witches, attenuators, directional detectors, phase shifters and other GaAs and silicon devices are shrinking dramatically as suppliers are challenged to develop new process and packaging techniques. Customers are demanding that new devices operate with...

Special Reports EDITORIAL INDEX 2000 * VOLUME 43 ANTENNAS Collins, Brian S. "Polarization Diversity Antennas for Compact Base Stations," No. 1, p. 76. Collins, Brian S. "The Effect of Imperfect Antenna Cross-polar Performance on the Diversity Gain of a Polarization-diversity Receiving System," No. 4, p. 84. Liang, Xu and...

Special Reports CNIT Paris la Défence from 16­18 January 2001 A conference dedicated to emerging technologies for the communications market For the first time, two of the world's leading technology magazines, Telecommunications ® and Microwave Journal, join together during RF & Hyper Europe 2001 to present a comprehensive industry...

Technical Features Behavioral Modeling of High Power Amplifiers Based on Measured Two-tone Transfer Characteristics Youngoo Yang, Jaehyok Yi, Joongjin Nam and Bumman Kim Department of Electronic and Electrical Engineering and Microwave Application Research Center Pohang University of Science and Technology Namku Pohang, Korea  Multi-stage high power amplifiers generally have...

Technical Feature 3D FEM and EM Simulations for DRFs Jwo-Shiun Sun Department of Electronic Engineering National Taipei University of Technology Taiwan, ROC Jier-Chih Hsieh Department of Engineering and System Science National Tsing Hua University Taiwan, ROC Three-dimensional (3D) fullwave analysis of a microwave dielectric resonator filter (DRF) in a...

TUTORIALS A General Design Procedure for Bandpass Filters Derived from Low Pass Prototype Elements: Part I K.V. Puglia M/A-COM Inc. Lowell, MA B andpass filters serve a variety of functions in communication, radar and instrumentation subsystems. Of the available techniques for the design of bandpass filters, those techniques based...

Application Note Measurement of Modulated Scattering Parameters using Modulated Vector Network Analysis Don Metzger Modulation Instruments Division Credence Systems Corporation Colorado Springs, CO A new architecture for RF and microwave measurement has recently been introduced. The first instrument based on this architecture is called the modulated vector network analyzer...

NEW PRODUCTS COMPONENTS * Surface-mount Voltage Variable Attenuator The model AV850M2-A2 18 to 40 GHz broadband millimeter-wave voltage variable attenua tor (VVA) offers 33 dB attenuation range and low insertion loss. It is designed for use in millimeter-wave communications and sensor systems as a variable attenuation stage in the...