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Software & CAD

High Speed Analysis and Optimization of Waveguide Bandpass Filter Structures Using Simple Neural Architectures

Presentation of a simple and accurate neural architecture to facilitate the design of waveguide bandpass filter stuctures
TECHNICAL FEATURE High Speed Analysis and Optimization of Waveguide Bandpass Filter Structures Using Simple Neural Architectures At microwave frequencies, from about 7 to 60 GHz, inductive irises are very often used as coupling networks between half-wavelength cavities in rectangular waveguides to develop very selective low loss bandpass filters. This...
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Power Efficient MMIC Frequency Triplers

Presentation of an approach to optimize the power efficiency of an MMIC frequency tripler
TECHNICAL FEATURE Power Efficient MMIC Frequency Triplers The design of an efficient frequency tripler for an S-/X-band communications receiver is described. An approach for optimizing the tripler for best power efficiency is presented. The tripler topology consists of the harmonic generator circuit, a bandpass filter and an amplifier. A...
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SiGe Power Amplifier ICs with SWR Protection for Handset Applications

Detailed description of how SiGe technology is used to develop power amplifier ICs for wireless handset applications
TECHNICAL FEATURE SiGe Power Amplifier ICs with SWR Protection for Handset Applications Joe Pusl and Srikanth Sridharan IBM San Diego RFIC Design Center Encinitas, CA Philip Antognetti, David Helms, Anurag Nigam, James Griffiths, Kenneth Louie and Mark Doherty IBM Boston RFIC Design Center Lowell, MA In recent years there...
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On the Direct Conversion Receiver -- A Tutorial

A detailed look at the characteristics of the direct conversion receiver
TUTORIAL On the Direct Conversion Receiver -- A Tutorial Increased pressure for low power, small form factor, low cost and reduced bill of materials in such radio applications as mobile communications has driven academia and industry to resurrect the direct conversion receiver. Long abandoned in favor of the mature...
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