Talk:Isolator (microwave)
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Resonance or field-displacement isolator?
[edit]Is my isolator in the photo a resonance or a field-displacement isolator? I've called it a resonance isolator, but the presence of the tapered ceramic strip and the modest size of the magnet makes me wonder. How can I tell the difference? --catslash (talk) 11:15, 22 July 2009 (UTC)
- To answer my own question: it is a resonance absorption isolator because:
- the magnetic bias polarity is such that the precessing electrons in the ferrite interact with the backward not the forward signal,
- the extent (partial height) and position of the ferrite (1/4 way across the guide, not near the side wall (contrary to how it appears in the photo)) is consistent with the resonance absorption type and
- no resistive film or card is visible (though one could be there)
- -nearly convinced. --catslash (talk) 21:48, 22 October 2011 (UTC)