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Industry News

A Fully Integrated Dual-frequency Push-push VCO for 5.2 and 5.8 GHz Wireless Applications

Description of a single push-push VCO circuit with 3.5 and 7 GHz outputs for wideband wireless applications
Y. Sun, Utrecht T. Tieman, H. Pflung and W. Velthuis
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TECHNICAL FEATURE A Fully Integrated Dual-frequency Push-push VCO for 5.2 and 5.8 GHz Wireless Applications A fully integrated dual-frequency voltage control oscillator (VCO) for 5.2 and 5.8 GHz wireless local area network (LAN) application, providing not only a high frequency local oscillator (LO) signal to transceiver mixers but also...
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A 3 V Small Chip Size GSM HBT Power MMIC with 56 Percent PAE

A three-stage 56 percent power added efficiency InGaP/GaAs hetero-junction bipolar transistor power MMIC for use in Global System for Mobile Communications applications
J.E. Mueller, U. Gerlach, G.L. Madonna, M. Pfost, R. Schultheis and P. Zwicknagl
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TECHNICAL FEATURE A 3 V Small Chip Size GSM HBT Power MMIC with 56 Percent PAE This article describes a three-stage 56 percent power added efficiency (PAE) InGaP/GaAs hetero-junction bipolar transistor (HBT) power MMIC for use in Global System for Mobile Communications (GSM) applications at 900 MHz. An output...
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Design of Coplanar Power Amplifiers for Millimeter-wave System Applications Including Thermal Aspects

Design issues in the thermal management of coplanar MMIC power amplifiers, including transistor geometry, chip size and mounting conditions
A. Bessemoulin, W. Marsetz, Y. Baeyens, R. Osorio, H. Massler, A. Hulsmann and M. Schlechtweg
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TECHNICAL FEATURE Design of Coplanar Power Amplifiers for Millimeter-wave System Applications Including Thermal Aspects Because of the poor thermal conductivity of GaAs, successful power MMIC amplifier design in coplanar technology requires careful thermal considerations. The influences of the active device geometry and mounting conditions have been investigated theoretically and...
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A Low Cost, Cavity Stabilized 5.8 GHz Oscillator Realized in LTCC

A cost-effective, highly stable 5.8 GHz FET oscillator realized in LTCC with an integral cavity resonator
Steve Maas, J. Delacueva, J. Li and S. White
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TECHNICAL FEATURE A Low Cost, Cavity Stabilized 5.8 GHz Oscillator Realized in LTCC To achieve high stability and low cost, a 5.8 GHz FET oscillator was realized in the low temperature, cofired ceramic (LTCC) medium, with an integral cavity resonator. The oscillator exhibits an average 0.23 MHz/°C drift over...
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Metamorphic Transistor Technology for RF Applications

Detailed review of the material properties, processing, and device and amplifier performance of metamorphic HEMTs
C.S. Whelan, P.F. Marsh, W.E. Hoke, S.M. Lardizabal, R. Leoni III, K.C. Hwang and T.E. Kazior
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TECHNICAL FEATURE Metamorphic Transistor Technology for RF Applications C.S. Whelan, P.F. Marsh, W.E. Hoke, S.M. Lardizabal, R. Leoni III, K.C. Hwang and T.E. Kazior Raytheon RF Components Andover, MA T he need for bandwidth, driven primarily by the explosive demand for information transfer and communication services, has necessitated the...
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Spectrum Modeling of an RF Power Amplifier for TDMA Signals

Nonlinear effects of an RF power amplifier in a TDMA system
Chunming Liu, Heng Xioa, Fu Li, Qiang Wu
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TECHNICAL FEATURE Spectrum Modeling of an RF Power Amplifier for TDMA Signals One of the critical and costly components in digital cellular communication systems is the RF power amplifier. Theoretically, one of the main concerns in an RF power amplifier design is the nonlinear effect of the amplifier. Quantitatively,...
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The Book End

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THE BOOK END * Bluetooth Demystified Nathan J. Muller McGraw-Hill 396 pages; $49.95 (paperback) ISBN: 0-07-136323-8 Bluetooth wireless technology is intended to replace cable connections between electronic devices for the purpose of data transfer. Within a few years, approximately 80 percent of all mobile phones are expected to carry...
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Catalog Update

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Catalog Update * New Products and Technologies Catalog   This "What's New at AVX for 2001" catalog offers valuable information on this year's new products and technologies. The catalog highlights information on the company's products, including capacitors, capacitor arrays, filters, thin film devices, ferrites, timing devices, connectors and circuit...
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Around the Circuit

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AROUND THE CIRCUIT INDUSTRY NEWS * Rogers Corp. has entered into an agreement with Taconic to acquire its Advanced Dielectric business. Taconic's Advanced Dielectric business manufactures and markets high frequency printed circuit material laminates. Under the terms of the agreement, Rogers will acquire the manufacturing facilities and offices located...
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Commercial Market

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THE COMMERCIAL MARKET Voice-activated Wireless Location-sensitive Service to be Tested Cell-Loc Inc. has announced that, in conjunction with Nortel Networks, a joint trial of the first voice-activated, wireless location-sensitive service using network location technology to provide that service to mobile phone users will be conducted in Austin, TX. The...
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