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HELP! How to add a dc bias Magnetic field and a ac M-field together to a domain

Posted 22.07.2011, 16:15 GMT-4 RF & Microwave Engineering, Parameters, Variables, & Functions Version 4.2 0 Replies

Yilin Zhang
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The magnetic field I would like to apply is a dc M-field plus an ac field.

I defined dc field (H_dc), and also a waveform (H_ac) as the ac field in Global definition.

Then I defined a magnetic field under the physics "electromagnetic wave", and typed magnetic field: H0=H_dc+H_ac (in z direction), but the expression turned out red and said "Unexpect unit of input". I can not define unit for the ac part in the Global definition.

Is there any one knows how to define dc field+ac field? Thx!
0 Replies Last Post 22.07.2011, 16:15 GMT-4
COMSOL Moderator

Hello Yilin Zhang

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