Custom Search
Over 10000 Pages Indexed
Your Host
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!)

5CCG (5th MOB):
My USAF radar shop

Hobby & Fun

Airplanes and Rockets:
My personal hobby website

Equine Kingdom:
My daughter Sally's horse
riding business website -
lots of info

•−•  ••−•    −•−•  •−  ••−•  •
RF Cafe Morse Code >Hear It<

Job Board

About RF Cafe©

RF Cafe E-Mail

Need help on Simulating a 60GHz F-form Antenna by HFSS - 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: Need help on Simulating a 60GHz F-form Antenna by HFSS
Posted: Mon Jul 28, 2008 3:46 pm 
 
Lieutenant

Joined: Wed Jul 09, 2008 11:51 am
Posts: 2
Location: Chicago
Hi all,

I am simulating a 60GHz straight F-form antenna by Ansoft HFSS. I use the low-loss Rogers material(loss tangent is 0.0021) as the board material. This F-form antenna resonates around 61GHz(S11) . However, when I tried to get information on radiation efficiency, it turns out that the radiation efficiency is greater than "1". I don't know what's wrong with my modeling and how to improve it. Could anyone give me some advices? Thank you very much! Welcome to contact me via: hopefully81(at)gmail.com

Kevin

_________________
Pursuing perfectness pushes us to progress


 
   
 
 Post subject:
Posted: Tue Jul 29, 2008 2:03 am 
 
Captain
User avatar

Joined: Wed Jun 20, 2007 3:01 am
Posts: 22
Dear sageme,

Check your radiation box size, it should larger and enclosing your structure. Check the operating frequency, in your case, it should be at least 60GHz. Could you please send a figure for your structure model on HFSS?


Best Regards,
imodelit Moderator


 
   
 
 Post subject:
Posted: Tue Jul 29, 2008 12:39 pm 
 
Lieutenant

Joined: Wed Jul 09, 2008 11:51 am
Posts: 2
Location: Chicago
Hi imodelit_moderator,

My radiation box is at least quarter-wavelength away from the radiating structure. The solution frequency is set to 61GHz, while the frequency sweep range is from 50GHz to 75GHz. From the S11, this F antenna really resonates around 61GHz. By the way, I don't know how to post a figure here....

Thank you very much!

Kevin

[/img]

_________________
Pursuing perfectness pushes us to progress


 
   
 
 Post subject:
Posted: Wed Jul 30, 2008 1:53 am 
 
Captain
User avatar

Joined: Wed Jun 20, 2007 3:01 am
Posts: 22
Hi Kevin,

Could you please send me your simulation file on marwah.shafee@imodelit.com. Thanks.


Best Regards,
Marwah Shafee
imodelit Moderator





Posted  11/12/2012
A Disruptive Web Presence

Custom Search
Over 10,000 pages indexed! (none duped or pirated)

Read About RF Cafe
Webmaster: Kirt Blattenberger
    KB3UON

RF Cafe Software

RF Cascade Workbook
RF Cascade Workbook is a very extensive system cascaded component Excel workbook that includes the standard Gain, NF, IP2, IP3, Psat calculations, input & output VSWR, noise BW, min/max tolerance, DC power cauculations, graphing of all RF parameters, and has a graphical block diagram tool. An extensive User's Guide is also included. - Only $35.
RF system analysis including
frequency conversion & filters

RF & EE Symbols Word
RF Stencils for Visio

Product & Service Directory
Personally Selected Manufacturers
RF Cafe T-Shirts & Mugs

RF Cafe Software

Calculator Workbook
RF Workbench
Smith Chart™ for Visio
Smith Chart™ for Excel