Industry News
Multitone signal generators that provide up to 16 CW signal outputs simultaneously and have been designed specifically to test the intermodulation performance of base station high power amplifiers (HPA)
May 1, 1999
Multitone Signal Generators for Cellular and PCS HPA Evaluation RDL Inc. Conshohocken, PA Today's multicarrier wireless communications systems require sophisticated test equipment to analyze and verify performance levels. Spread spectrum systems are prone to generating intermodulation products due to the nonlinearity of system components such as high power amplifiers...
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A thin-core copper laminate for the RF portion of multilayer assemblies
May 1, 1999
A Thin, High Frequency Laminate for Multilayer PCB Applications GIL Technologies Collierville, TN Smaller, lighter and more integrated seem to be the direction toward which today's high frequency PCB technology is moving. The microwave portion of the circuit must now be an integral part of a multilayer PCB assembly...
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A new portable spectrum analyzer series that utilizes a continuous, automatic alignment function to provide a warm-up time of only five minutes
May 1, 1999
Portable Spectrum Analyzers with a Five-minute Warm-up Time Hewlett-Packard Co. Santa Rosa, CA In the demanding world of wireless communications, engineers and technicians are faced with ever-increasing pressure to be efficient with their time. These individuals cannot afford to wait long periods for test equipment to warm up to...
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A new low cost rubidium instrument that is one-third the size of previous similar sources without sacrificing performance
May 1, 1999
A Miniature, Low Cost Rubidium Frequency Standard Quartzlock UK Ltd. Totnes, Devon, UK Many of today's wireless communications systems require a compact, high precision frequency source. Although the use of a crystal frequency standard for these applications can provide excellent short-term stability, this type of source falls short in...
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A straightforward method for modeling FETs for Volterra analysis
May 1, 1999
Technical Feature FET Models for Volterra-series Analysis Stephen A. Maas Please click here to view the pdf file of the Technical Feature...
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How to characterize the radiation patterns of a slant-polarized cellular telephone base station antenna
May 1, 1999
Technical Feature Radiation Characterization of Slant Polarization Antennas Mao Tian Please click here to view the pdf file of the Technical Feature...
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A simple analytic method of microwave bipolar transistor oscillator design that defines explicit expressions for optimum values of feedback elements through the bipolar transistor Z parameters
May 1, 1999
Technical Feature Microwave Transistor Oscillators: An Analytic Approach to Simplify Computer-aided Design Andrey V. Grebennikov Please click here to view the pdf file of the Technical Feature...
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A look at the innovative business of commercial microwave sensors, which is expected to generate a new $1 B market within the next few years
May 1, 1999
Commercial Microwave Sensor Technology: An Emerging Business Microwave sensors are on the move toward commercial usage in the industrial, automotive and consumer fields. This innovative business is expected to generate a new $1 B market within the next few years. Patric Heide Siemens AG Munich, Germany Based on a...
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Simple-structured varactor-tuned oscillators using series-tuning methodology with a common base configuration accompanied by feedback inductance
May 1, 1999
Technical Feature Design and Analysis of Microwave Varactor-tuned Oscillators Jwo-Shiun Sun Please click here to view the pdf file of the Technical Feature...
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The use of an active phased array to solve such problems as generating high power in a single transmitter at super high frequencies
May 1, 1999
Efficiency Principles for Phased-array Radars Using Active Antenna Elements Efficiency design principles for active antenna arrays are presented and discussed. A dual-antenna then is shown to be a design that easily implements the efficiency principles and also offers other advantages for radars. Jesse C. James Consultant Huntsville, AL An...
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