Information on hair-pin comb filters?

I guess you just have to have learned MW filter theory from Matthei for it to look simple then...

Of course, it was written in the early 60s! (or is it late 50s... my copy is sadly, long ago borrowed...) :-(

Have you looked at the book commonly known as Matthei, Young & Jones? It's stuffed with information on microwave components.

I have that book and it is a disgrace. Vastly too expensive, and nothing more than a collection of poorly written papers. It isn't even typeset! You can extract some useful information from it, but boy do you have to dig.

Far better to get any generalized filter book and get to understand k and q values for resonator coupling, then experiment with a few topologies - including hairpins - and see what suits best.

d Pearce Consulting

I agree that the courier typeface makes it hard work, but there is no doubt that all the theory is there. If you read the preface (or whatever) it was written as a US DOD project. That alone pretty much guarantees that the information is rock solid.

Quite a few hairpin filter designs were presented in various articles in the American amateur radio literature from the mid 80's to the early 90's. The best articles are probably those in several of the proceedings of the annual Microwave Update Conference, published by the American Radio Relay League

Steve

Microwave Filters, Impedance-Matching Networks, and Coupling Structures

ISBN 0-89006-099-1 G. Matthaei, L. Young, E.M.T. Jones

Here's a link. Select your part of the world on the map and it will show the book...

Although it does not explain the theory behind it, Ansoft Designer SV (which is freely available at

You might find it helpful for your project.

Best,

-LENS

Hi Jim,

can you please provide the full title, ISBN/LOC etc. I have an extensive collection of electronic engineering texts, and am always on the lookout for :good" books. By good, I usually mean full of detailed technical info. Many books (eg all those published by TAB) are just crap - so many modern texts provide little more than a summary.

Cheers Terry

Microwave Filters, Impedance-matching networks, and Coupling Structures G Matthaei, L Young, E M T Jones

Library of Congress 80-68976 Standard Book number 0-89006-099-1

originally printed by McGraw Hill 1964 reprint from Artech House 1980

Thanks both Jim and XRay

Regards, Terry