Andy, yes - I'll copy the relevant section from Brian Wadell's Transmission
Line Design Handbook.
73 John, G3WKL
-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of Talbot Andrew
Sent: Friday, November 29, 2002 11:14
To: LF Group (E-mail)
Subject: LF: Printed Spiral Inductors - off topic
Sorry if this is somewhat off topic, but I am looking for the design
equations for spiral inductors printed on PCB material, with or without a
groundplane. I vaguely remember seeing some equations in one of the
freebie RF magazines a few years ago, but can't find it. A web search has
not pointed at anything useful - yet.
I need to design some bandpass filters in the 300MHz and 600 to 800MHz
ranges and want something more repeatable than bits of silver
plated wire.
Can anyone lay their hands on the design equations ?
Tnx
Andy G4JNT
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