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Industry News

The Book End

The Book End Digital Communications: Design for the Real World Andy Bateman Addison-Wesley Publishing Co. 221 pages plus CD ROM; $59.95, £24.95 Much of today's electronic communications utilizes some form of digital modulation. Communications equipment design engineers now must be thoroughly familiar with these techniques and their effects on...
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Improved Composite Metal for High Performance Semiconductor Applications

An improved version of the popular copper tungsten composite with thermal and electrical properties approaching the product's theoretical maximum
Improved Composite Metal for High Performance Semiconductor Applications Polese Co. San Diego, CA As performance demands on silicon and GaAs devices continue to increase, so do thermal management concerns and the need for cost-effective packaging alternatives. In addition to heat dissipation, concerns such as material compatibility must be considered...
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Chip Directional Couplers for Wireless Applications

Chip directional couplers in an ultra-compact package that utilize a proprietary ceramic multilayer material and process to ensure superior performance and reliability
Chip Directional Couplers for Wireless Applications Toko America Inc. Mt. Prospect, IL Numerous circuit locations exist in today's portable wireless telephones and equipment that require an RF sample voltage to be redirected to another part of the circuit. In the past, directional couplers were considered one of the more...
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An RF Power Amplifier for Whole-body MRI Scanner Applications

This month's cover features two of the four multikilowatt RF power amplifiers that are part of a 10 kW, 245 to 345 MHz power amplifier system used in the highest field strength MRI scanner in existence
An RF Power Amplifier for Whole-body MRI Scanner Applications Communication Power Corp. Brentwood, NY Approximately 20 years have passed since the introduction of magnetic resonance imaging (MRI) scanners. In that time, this once-ridiculed technology has become a mainstream medical imaging modality. Coupled with MRI's anatomical imaging capability is nuclear...
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Broadband High Frequency SMT Packages

A family of surface-mount technology (SMT) packages introduced for high frequency broadband applications
Broadband High Frequency SMT Packages Kyocera America Inc. San Diego, CA For many years, the electronics industry has been using surface-mount technology (SMT) components because of their ease of integration, low cost and standardization. One drawback has been the lack of a single broadband, low parasitic package to fit...
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Precision Attenuators for Wireless Production Applications

A series of electronically switched step attenuators that cover all of the frequencies used in wireless communications services
Precision Attenuators for Wireless Production Applications Trilithic Inc. Indianapolis, IN With "faster, cheaper" as their mantra, wireless telephone manufacturers are leaving no area of production untouched as they search for ways to improve throughput. Not surprisingly, production is an area frequently scrutinized since even modest reductions in test time...
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A Starlet's Secret Life as Inventor

The little-known contributions of actress Hedy Lamarr to the advancement of military communications
A Starlet's Secret Life as Inventor Hedy Lamarr is being showered with honors for advancements in military communications based on her anti-jamming patent from the '40s. Peter Y. Hong Los Angeles Times Staff Writer Editor's Note: The following article by Peter Y. Hong is reprinted with permission from the...
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Design Considerations for Multicarrier CDMA Base Station Power Amplifiers

A look at the issues involved in deisgning or selecting a transmit power amplifier for multicarrier CDMA base stations
Technical Feature Design Considerations for Multicarrier CDMA Base Station Power Amplifiers J.S. Kenney and A. Leke Please click here to view the pdf file of the Technical Feature...
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Cost Analysis of Rework and Test

A simple method to analyze the cost trade-offs associated with reworking or scrapping failed assemblies
Special Report Cost Analysis of Rework and Test Murat Eron Please click here to view the pdf file of the Special Report...
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Device and Circuit Approaches for Next-generation Wireless Communications

Emerging approaches for future communication systems, including power amplifiers with increased efficiency, optimized multicarrier CDMA modulation and optimized transistors
Technical Feature Device and Circuit Approaches for Next-generation Wireless Communications P. Asbeck, J. Mink, T. Itoh and G. Haddad Please click here to view the pdf file of the Technical Feature...
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