Design filter supressing harmonica

Hi guys,
Pls tell me some theory and tricks on designing waveguide filter with capability of supressing harmonic.For example,8-10GHz BPF,with 40dBc attenuation among 16-20G.

I cannot carry on with my work now.
Response is appreciated!

Maybe it help:

http://www.guidedwavetech.com/
http://www.fb1.uni-bremen.de/hf-tech..._synthesis.pdf
http://home.sandiego.edu/~ekim/e194rfs01/filterek.pdf

rgds

You need to use a corrugated waveguide filter or a waffle-iron filter.
Theory and example you can find in the "Matthaei book" and the attachments file's from R_Goulouev.
Good luck.

Hi borich_03,

I have downloaded both the files but the files are in extension *.mcd ; could I know what software will be able to open the above attachement?

Thanks.

You've to use MathCad programme from Mathsoft Corporation.