Talk:Stripline

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AIL stripline

I don't quite understand the description of this. It sounds a bit like suspended stripline, but then it says the conductor was printed on both sides of the dielectric and I'm lost. Perhaps a diagram? --catslash (talk) 00:09, 12 April 2010 (UTC)[reply]

Did you look up the reference? There is a diagram in there which should make it clear. Something like that could be done in SVG. SpinningSpark 05:34, 12 April 2010 (UTC)[reply]

Cutoff frequency

"Like coaxial cable, stripline is non-dispersive, and has no cutoff frequency", I think this statement is not exactly true. In here http://www.qsl.net/va3iul/Microstrip_Stripline_CPW_Design/Microstrip_Stripline_and_CPW_Design.pdf a formula is given for calculating the cutoff frequency when certain (I guess ideal) conditions for a stripline are not met. 64.129.166.50 (talk) 15:07, 15 April 2014 (UTC)[reply]

I'm not seeing it, can you give me an exact quote please?. The document says "Like coaxial cable, Stripline it is non-dispersive, and has no cut-off frequency." This is almost identical to the sentence in our own article. The dominant mode of stripline is TEM which cannot have a cut-off frequency. A formula is given for cut-off for a rectangular mode that can exist when stripline is surrounded with via fences but this is a mode which ignores the strip conductor. It could be removed and the mode would still propagate. Note that there is an exactly analogous case with coaxial cables. Circular waveguide modes can exist that do not require the centre conductor. Spinning Spark 17:04, 15 April 2014 (UTC)[reply]

Would it be clearer if it said: Like coaxial cable, stripline is non-dispersive (given a non-dispersive substrate material), and has no lower cutoff frequency.? (Though of course the TEM mode doesn't have an upper cutoff either (given ideal materials).) --catslash (talk) 22:02, 15 April 2014 (UTC)[reply]