Sujet : Re: transmission line z
De : bill.sloman (at) *nospam* ieee.org (Bill Sloman)
Groupes : sci.electronics.designDate : 17. Jun 2025, 09:48:23
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <102ra4q$296bk$1@dont-email.me>
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On 12/06/2025 5:21 am, john larkin wrote:
On Wed, 11 Jun 2025 14:30:33 +0200, Leo Baumann <ib@leobaumann.de>
wrote:
Am 11.06.2025 um 11:36 schrieb Jeroen Belleman:
Supposedly that's exactly _why_ this specific geometry is not
explicitly included.
>
The text in my book states that this line geometry is unstable. Other
lines and geometries in the vicinity have a significant disruptive
influence on Z.
Same as microstrip.
But not buried stripline. Once you put your conducting trace between two ground planes, your electric fields are confined, and well defined.
Buried strip-line does lend itself to relatively low impedance structures, and you might realise your transformers as transmission line transformers, with a pair of low impedance strip-lines combining to create twice the voltage swing in a higher impedance output strip line.
Hard to probe, but you could put in occasional vias to make the inner workings visible at crucial points.
https://www.allaboutcircuits.com/technical-articles/a-brief-introduction-to-ruthroff-transmission-line-transformers/https://rfic.eecs.berkeley.edu/courses/ee217sp05/lect10.pdf-- Bill Sloman, Sydney
transmission line z
Re: transmission line z
