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Electronics

Electromagnetics

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Displaying 1001 - 1025 of 1580

Robust SOLT and Alternative Calibrations for Four-Sampler Vector Network Analyzers

October 1, 1999
Author(s)
Jeffrey Jargon, Roger Marks, D. K. Rytting
This paper assesses the accuracy of several proposed lumped-element calibration techniques for four-sampler vector network analyzers in the face of imperfectly defined standards. We find that these methods offer a wide range of accuracies, depending on the

A Causal Microwave Circuit Theory and Its Implications

August 1, 1999
Author(s)
Dylan Williams, Bradley Alpert
We will describe a new causal power-normalized waveguide equivalent-circuit theory and explore its implications. The new theory marries a power normalization with additional constraints that enforce simultancity of the theory's voltages and currents and

Far-Field Antenna Patterns Determined from Infrared Holograms

July 1, 1999
Author(s)
Carl F. Stubenrauch, J. D. Norgard, J. E. Will, Katherine MacReynolds
In this paper, we describe a technique based on optical holography which allows determination of the amplitude and phase of an unknown antenna on a near-field plane from amplitude-only measurements.

A Complete Multimode Equivalent-Circuit Theory for Electrical Design

June 22, 1999
Author(s)
Dylan F. Williams, L. A. Hayden, Roger Marks
This work presents a complete equivalent-circuit theory for lossy multimode transmission lines. Its voltages and currents are based on general linear combinations of standard normalized modal voltages and currents. The theory includes new expressions for

Update on a Consumer-Oriented Guide for Surge Protection

May 27, 1999
Author(s)
Francois D. Martzloff, T. S. Key, D. Nastasi, K. O. Phipps, J. May
Caught among contradictory stories on the need for surge protection as well as unsupported anecdotes of surge-related failures found in some editorial advertising, the typical consumer is in a quandary on how to est allocate personal resources to protect
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