Formulas & Data:
- Electronics
- Mathematics
- Physics
- RF & Microwaves

Parts Vendors:
- all hand-selected

- Amateur Radio
- Vintage Articles:
- Electronics World
- Popular Electronics
- QST
- Radio & TV News
- Radio Craft
- Short Wave Craft
- Wireless World

- Events Calendar
RF Cafe Homepage
Copyright 1999-2015   •−•  ••−•    −•−•  •−  ••−•  •   "RF Cafe" in Morse Code  >> Listen to It <<
- EW & Radar Handbook
- Quizzes       - Software
- App Notes
- Calculators
- Advertise on RF Cafe
- About RF Cafe™
- RF Cafe Shirts & Mugs
- RF Cafe Archives
RF Cafe Book Contest
- RF Cafe on Visit RF Cafe on Facebook Visit RF Cafe on Twitter Visit RF Cafe on LinkedIn
- Tech Humor
- Forums Archive
- Job Board
- Donate to RF Cafe
- Kirt's Cogitations
Custom Search
More than 10,000 searchable pages indexed.
Greetings: There is so much good stuff on RF Cafe that there is no way to list or link to all of it here. Please use the Search box or the Site Map to find what you want - there is a good chance I have it here. Thanks!

Question about µWave's fcmax - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.


 Post subject: Question about µWave's fcmax
Posted: Thu Jan 06, 2011 9:39 pm 
 
Lieutenant

Joined: Thu Jan 06, 2011 5:30 am
Posts: 1
When I simulate a combline fiter in µWave
cutoff freqency=20ghz, errors occurred and information displayed as below:

ERROR 1: Internal error in project [Combline.circuit_1]: Error for structure spres_31: critical order is exceeded by 166.66666667%
INFO in project [Combline.circuit_1]: Structure can be analyzed up to fcmax = 12.00000GHz
ERROR 1: Internal error in project [Combline.circuit_1]: *==> Execution Terminated!
ERROR 1: Internal error in project [Combline.circuit_1]: Error in subroutine destroy_qres: unable to (de)allocate memory
Program terminated with an error! ---Error occurred at f=1.800000 GHz [1.point]! Calculation time (0:00:00)

In order to get precise results, how can I modify the "fcmax" ?
Thanks in advance!




Posted  11/12/2012

Your RF Cafe
Progenitor & Webmaster

Click here to read about RF CafeKirt Blattenberger… single-handedly redefining what an engineering website should be.

View the YouTube RF Cafe Intro Video Carpe Diem!
(Seize the Day!)

5th MOB: My USAF radar shop

Airplanes and Rockets: My personal hobby website

Equine Kingdom: My daughter Sally's horse riding website