How to simulate full cavity filter using CST

[shockwave]

cavity filters, cst

For cavity filter design, now we only first simulate single cavity's resonance frequency, then caculate the coupling coefficient that determine the ires'width.
I have seen some papers that introduce full cavity filter simulation using HFSS and CST,but I can't grasp the main idear,
Can anyone introduce some method on full filter simulation in detail.

Thanks

The attached is the pic on filter synthesis programe

 

[goxy]

Here you full method for cavity filter simulation in CST:
**broken link removed**

ps. at the end of posted page you have link> next step, there are 7 pages in all.

 

[shockwave]

goxy
Thanks for your answer
But the filter that I design include tuning and coupling screw, so more parameters need to be determined,and if use crosscoupling then how to do?

 

[HxJi]

en, not a hard work...
in theory at least...