Information on hair-pin comb filters?

[Ferdie Britz]

I am analyzing a Meteosat-7 weather satellite (1.7 GHz to 137.5 MHz)
frequency down converter as part of my degree project.

Any information on hair-pin comb filters will be highly appreciated.

Thanks
Ferdie

 

[Jim Backus]

On Wed, 1 Dec 2004 19:08:59 UTC, fb@absamail.co.za (Ferdie Britz)
wrote:

I am analyzing a Meteosat-7 weather satellite (1.7 GHz to 137.5 MHz)
frequency down converter as part of my degree project.

Any information on hair-pin comb filters will be highly appreciated.

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

--
Jim Backus OS/2 user since 1994
bona fide replies to j <dot> backus <the circle thingy> jita <dot>
demon <dot> co <dot> uk

 

[Don Pearce]

On Wed, 1 Dec 2004 20:52:30 +0000 (UTC), "Jim Backus"
<jhb@nospam.co.uk> wrote:

On Wed, 1 Dec 2004 19:08:59 UTC, fb@absamail.co.za (Ferdie Britz)
wrote:

I am analyzing a Meteosat-7 weather satellite (1.7 GHz to 137.5 MHz)
frequency down converter as part of my degree project.

Any information on hair-pin comb filters will be highly appreciated.


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
http://www.pearce.uk.com

 

[xray]

On Fri, 03 Dec 2004 13:47:43 +1300, Terry Given <my_name@ieee.org>
wrote:

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

ISBN 0-89006-099-1
G. Matthaei, L. Young, E.M.T. Jones
1096 pages.
Copyright 1980.

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

http://www.artechhouse.com/default.asp?Frame=Book.asp&Book=0-89006-099-1

 

[Steve Kavanagh]

fb@absamail.co.za (Ferdie Britz) wrote in message news:<28dbb065.0412011108.57672140@posting.google.com>...

Any information on hair-pin comb filters will be highly appreciated.

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 (www.arrl.org). But these may be hard
to obtain for you. One easily found reference in one of these
articles which might be worth a look is Joseph S. Wong, "Microstrip
Tapped-Line Filter Designs", IEEE Trans. Microwave Theory &
Techniques, Vol. MTT-27, No.1, Janury 1979.

Steve

 

[Luis Navarro-Serment]

Ferdie Britz wrote:

I am analyzing a Meteosat-7 weather satellite (1.7 GHz to 137.5 MHz)
frequency down converter as part of my degree project.

Any information on hair-pin comb filters will be highly appreciated.

Thanks
Ferdie

Although it does not explain the theory behind it, Ansoft Designer SV
(which is freely available at www.ansoft.com) comes with an example of a
hair pin filter. You can modify it as you wish, visualize the filter's
layout, and observe the results in frequency response and return losses.

You might find it helpful for your project.


Best,

-LENS