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Passive Components

A Cellular Band Power Amplifier/Duplexer Module

TriQuint Semiconductor Inc.
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Wireless communications handsets are increasing in functionality through the addition of features such as GPS, color displays and PDA functions. At the same time the handset is maintaining a roughly constant price and size target. Because of this trend, handset manufacturers are requiring higher levels of integration from component...
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Enterprise Software for RF Device Characterization

Cascade Microtech Inc.
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In today's competitive marketplace the characterization of RF semiconductor devices for modeling, design, applications and process improvement must be faster, more efficient, and more repeatable and accurate as companies strive to improve their product performance, design productivity and time to market. However, help is on hand with the Wavevue...
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Ultra Linear Bandpass Filters

Delta Microwave
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A new product line of ultra linear bandpass filters has been introduced that utilize patent pending cross coupling to reduce time delay and phase distortion up to 90 percent. The filters typically utilize a 12-section filter with two inductive and two capacitive non-adjacent couplings to equalize and flatten the...
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2003 Connector, Cable and Cable Assembly Survey

This is the first survey of connectors, cables and cable assemblies sponsored by Microwave Journal. We hope to update it annually with increased industry participation.
Harlan Howe, Jr.
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On December 13, 2002, we sent a questionnaire to 75 companies that provide products and services in this field, with a response deadline of January 11th. We used e-mail rather than the USPS so that we would have feedback that all the questionnaires were received. On January 3, 2003,...
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Quick Mating N Connectors for RF Applications

Radiall
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In today's competitive environment designers and engineers are looking for any features that can give them the edge. When it comes to RF connectors, areas where that advantage can be gained are in the speed of installation, flexibility of connection and efficient utilization of space. The QuickLock family of...
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Precision Test Cable Assemblies to 40 GHz

Storm Products
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The Accu-Testâ„¢ products are a family of precision cable assemblies that are designed for use in the DC to 40 GHz frequency range, intended to facilitate accurate measurements and exhibit low loss characteristics at a competitive price for precision test and measurement applications. The family is currently comprised of...
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MIM Technology for RF Connector Production

IMS Connector Systems
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When developing and producing complex RF connector housings, costs can be high and the process complex due to the sheer number of required machined metal components and the diversity of the necessary assembly. However, these difficulties can be overcome by employing molded injected metal (MIM) technology for connector manufacturing....
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Self-locking Connectors to Reduce Aircraft Service Times

M/A-COM Inc.
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With all the talk about a wireless society, there is still a need for high performance coaxial cable assemblies. One of the areas still getting lots of development attention is cable assemblies for airborne electronic warfare. Most of these applications are at power levels too high for fiber optic...
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Developing Sophisticated Models for Capacitors, Inductors and Other Passive Components

It is useful to model the non-ideal characteristics of capacitors, inductors and other passive components by using multi-element "schematics," where each element represents some portion of the device's behavior. Traditional models for these devices suf...
Gregory L. Amorese, Agilent Technologies Inc. Santa Rosa, CA
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Traditional capacitor and inductor models have consisted of two or three elements (capacitor examples are shown in Figure 1 ). The two-element models provide a simple way to define the device. From a circuit designer's viewpoint, the two-element models may suffice for applications where the component is being used...
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RF Coplanar Probe Basics

Explanation of the construction, characteristics and usage of coplanar waveguide probes
Scott Wartenberg
One Comment
Coplanar waveguide probes, also referred to as coplanar probes, are the method of choice for launching RF signals on and off a wafer. This article explains their construction, RF characteristics and proper usage. Before the advent of coplanar probes, finding the RF behavior of a die on a wafer...
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