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Article: RF-inductor modeling for the 21st century.
- Article from:
- EDN
- Article date:
- September 27, 2001
- Author:
CopyrightCOPYRIGHT 2001 Reed Business Information, Inc. (US). This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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THE FAMILIAR THREE-ELEMENT MODEL OF AN INDUCTOR HAS SOME SERIOUS SHORTCOMINGS, EVEN AT FREQUENCIES WELL BELOW THE INDUCTOR'S SELF-RESONANT FREQUENCY. A MORE USEFUL MODEL CORRECTLY PREDICTS AN INDUCTOR'S BEHAVIOR OVER A RANGE OF FREQUENCIES.
OF THE THREE BASIC passive components--resistors, capacitors, and inductors--inductors are the least ideal and, therefore, the most difficult to model. The importance of a good model is that it not only tells you which inductor is best for your application, it also tells you how that inductor will behave in your application.
Since early in the last century, engineers have recognized the effect of distributed ...