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Industry News

Aluminum Nitride vs. Beryllium Oxide for High Power Resistor Products

Extensive study on the use aluminum nitride as an alternative to beryllium oxide for high power resistor and termination applications
November 1, 2001
Technical Feature Aluminum Nitride vs. Beryllium Oxide for High Power Resistor Products Michael Kettner, Patrick Biebersmith, Nelson Roldan And Balram K. Sharma Florida RF Labs Inc. Stuart, FL For the past few decades, beryllium oxide (BeO) has been the main substrate material used for RF resistors and terminations for...
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Planar EM Simulation of Multi-chip Modules and BGA Packages

Effect of planar electromagnetic simulators on multi-chip modules and ball grid array mounting techniques
November 1, 2001
Technical Feature Planar EM Simulation of Multi-chip Modules and BGA Packages Jim DeLap Agilent EEsof EDA Westlake Village, CA As electronics vendors and consumers demand smaller and lower cost products, manufacturers must find ways to increase levels of integration while maintaining product functionality. These higher levels of integration are...
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An Embedded MOS Model 9 for CMOS RF Circuit Design

Presentation of an n-channel MOS transistor model for the simulation of CMOS RF circuits in the gigahertz range
November 1, 2001
Technical Feature An Embedded MOS Model 9 for CMOS RF Circuit Design This article presents an n-channel MOS transistor model for the simulation of CMOS RF circuits in the gigahertz range. This model is based on a MOS model 9 (MM9) compact transistor model, embedded in a network describing...
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Rigorous Analytical Expressions for Electromagnetic Parameters of Transmission Lines: Coupled Sliced Coaxial Cable

A set of accurate closed-form formulas for primary parameter matrices and even- and odd-mode impedances for coupled sliced coaxial cables
November 1, 2001
Technical Feature Rigorous Analytical Expressions for Electromagnetic Parameters of Transmission Lines: Coupled Sliced Coaxial Cable This article is a continuation of a previous article that appeared in Microwave Journal and is the first part in the development of accurate closed-form formulas for the primary parameters (inductance [L] and capacitance...
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Circuit Designers: An Endangered Species?

Overview of the impact of sophisticated CAD software on today's analog design engineer
November 1, 2001
Special Report Circuit Designers: An Endangered Species? Ernest Rejman, Contributing Editor Back in the Jurassic Period, when the four-function calculator first made its appearance, some greeted it with dismay. "Suitable for imbeciles," spat an elder engineer of my acquaintance. "Now it won't be necessary to even know how to...
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Coping with Hidden Spurious Harmonic Modes in the Design of Low Pass Corrugated Waveguide Filters

Proposed simulation scheme to predict the frequency band location and hidden spurious harmonic modes in low pass corrugated waveguide filters
November 1, 2001
Technical Note Coping with Hidden Spurious Harmonic Modes in the Design of Low Pass Corrugated Waveguide Filters Hidden spurious harmonic modes in corrugated waveguide filters are investigated from both theoretical and practical points of view. It has been found that multiple mode couplings occurring at more than one place...
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Application and Operation of a Double OCXO

Use of double oven-controlled crystal oscillators to improve thermal quality for highly precise frequency references
November 1, 2001
Application Note Application and Operation of a Double OCXO Timo Reinhardt FOQ Piezo Technik GmbH Bad Rappenau, Germany Central switching centers make up the junction of mobile and stationary communications. In order to handle increasing data flows, this operation is performed at ever-higher frequencies and data speeds, and the...
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New Products

October 1, 2001
New Products COMPONENTS Digital Attenuator The model AA113-310 IC six-bit digital attenuator features a driver with low loss, high atten- uation accuracy, and single positive voltage control per bit. The high performance and low frequency of the attenuator make is well suited for IF gain control circuits in basestations,...
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Around the Circuit

October 1, 2001
Around the Circuit INDUSTRY NEWS Unitek Miyachi International Ltd. has acquired Benchmark International Inc. Located in Goffstown, NH, Benchmark is widely recognized as the world leader in hermetic sealing systems for small electronic packages. Platinum Equity has signed a definitive agreement to acquire the Access Product Division (APD) and...
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New Literature

October 1, 2001
New Literature Short Form Catalog This eight-page catalog features the company's waveguide couplers, waveguide components, waveguide terminations, phase shifters, variable attenuators, coaxial components and custom products. Product photographs, schematics, specifications, ordering information and a company overview are provided. Advanced Technical Materials Inc. (ATM), Patchogue, NY (631) 289-0363. Circle No....
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