Talk:Isolator (microwave)

Resonance or field-displacement isolator?

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)[reply]

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)[reply]