Crystal ladder coupling constants.
 

I am writing a simple program to design crystal ladder filters
using the formulas from W7ZOI's excellent QST article A Unified
Approach to the Design of Crystal Ladder Filters. QST May 1982.

I have got the tables of normalised coupling constants for
Butterworth and 0.1dB Chebyshev filters from the QST article.

I would like to find a source of similar tables for
filters with more than 5 poles and for passband ripple
other than 0.1dB.

Many Thanks.

73, Ed. EI9GQ.


--
Linux 2.6.15
Remove 'X' to reply by e-mail.
Yes, my username really is: nospam

Crystal ladder coupling constants.
 

Eamon Skelton wrote:

I have got the tables of normalised coupling constants for
Butterworth and 0.1dB Chebyshev filters from the QST article.

I would like to find a source of similar tables for
filters with more than 5 poles and for passband ripple
other than 0.1dB.

Many Thanks.

73, Ed. EI9GQ.

Handbook of Filter Synthesis by Anatol I. Zverev
(now available in paperback)
is the best book I've ever
seen on this topic. It even has tables for lossy filter elements.

Zack Lau W1VT

Crystal ladder coupling constants.
 

Handbook of Filter Synthesis by Anatol I. Zverev
(now available in paperback)
is the best book I've ever
seen on this topic. It even has tables for lossy filter elements.

Zack Lau W1VT


From where Zack? My hard copy has the pages falling out of it.

W4ZCB

Crystal ladder coupling constants.
 

Harold E. Johnson wrote:
Handbook of Filter Synthesis by Anatol I. Zverev
(now available in paperback)
is the best book I've ever
seen on this topic. It even has tables for lossy filter elements.

Zack Lau W1VT


From where Zack? My hard copy has the pages falling out of it.

W4ZCB

Amazon has it, £44.50 (UK).

Leon

Crystal ladder coupling constants.
 

On Mon, 16 Jan 2006 11:56:43 -0800, Zack wrote:


Handbook of Filter Synthesis by Anatol I. Zverev
(now available in paperback)
is the best book I've ever
seen on this topic. It even has tables for lossy filter elements.

Zack Lau W1VT

Thanks Zack,

73, Ed. EI9GQ.
--
Linux 2.6.15
Remove 'X' to reply by e-mail.
Yes, my username really is: nospam

Crystal ladder coupling constants.
 

On Sat, 14 Jan 2006 14:23:09 +0000, Eamon Skelton wrote:


I would like to find a source of similar tables for
filters with more than 5 poles and for passband ripple
other than 0.1dB.

I got the Tables from Zverev's book.

Many thanks,

73, Ed. EI9GQ.

--
Linux 2.6.15
Remove 'X' to reply by e-mail.
Yes, my username really is: nospam