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  Topic: Analyze reflection phase for a single reflectarray element
winson

Replies: 1
Views: 10098

PostForum: Questions Related to Antenna Theory   Posted: Thu Dec 30, 2010 9:30 pm   Subject: Analyze reflection phase for a single reflectarray element
Just found out that it can be achieve by using floquet port and master/slave boundary.
  Topic: Antenna efficiency
winson

Replies: 2
Views: 13804

PostForum: Questions Related to Antenna Theory   Posted: Sun Dec 12, 2010 6:10 am   Subject: Antenna efficiency
Hi Schubert,

Thanks for the clear and detail explanation. Very Happy

After reading your comment, now i understand why the total efficiency is always lower than the radiation efficiency.

Winson
  Topic: Antenna efficiency
winson

Replies: 2
Views: 13804

PostForum: Questions Related to Antenna Theory   Posted: Thu Dec 09, 2010 4:42 am   Subject: Antenna efficiency
Hi friends,

What is efficiency of antenna?

I have simulate some antennas in CST and i saw the results for radiation efficiency and total efficiency, so what are the difference between this two ...
  Topic: Any good IEEE papers for reflectarray design?
winson

Replies: 0
Views: 8544

PostForum: Questions Related to Antenna Theory   Posted: Mon Dec 06, 2010 3:48 pm   Subject: Any good IEEE papers for reflectarray design?
Hi friends,

Can anybody recommend some good IEEE papers about reflectarray design to me?

Any recommendation will be appreciate.
Thanks in advance.
  Topic: Analyze reflection phase for a single reflectarray element
winson

Replies: 1
Views: 10098

PostForum: Questions Related to Antenna Theory   Posted: Wed Dec 01, 2010 3:36 pm   Subject: Analyze reflection phase for a single reflectarray element
Hi all,

I'm quite new to ansoft HFSS, can i know how to configure the setting in order to simulate the reflection phase for a reflectarray element using infinite array approach?

I have successfu ...
  Topic: Gain of reflectarray antenna
winson

Replies: 4
Views: 17470

PostForum: Questions Related to Antenna Theory   Posted: Sun Oct 31, 2010 11:21 pm   Subject: Gain of reflectarray antenna
Thanks for the information, Schubert! Smile
  Topic: Gain of reflectarray antenna
winson

Replies: 4
Views: 17470

PostForum: Questions Related to Antenna Theory   Posted: Wed Oct 27, 2010 4:39 pm   Subject: Gain of reflectarray antenna
Thanks for reply, Very Happy

Reflectarray, if i not mistaken, is the combination of phased array and reflector antenna.

http://images.elektroda.net/30_1288196476.jpg
It was feed by a horn antenna an ...
  Topic: Gain of reflectarray antenna
winson

Replies: 4
Views: 17470

PostForum: Questions Related to Antenna Theory   Posted: Mon Oct 25, 2010 9:45 am   Subject: Gain of reflectarray antenna
Hi everybody,

I am trying to design a reflectarray antenna, so what are the design factors that affect the gain of the reflected far field beam?

How do we able to design it so that the reflecta ...
  Topic: CST Genetic Algorithm Optimizer - Setting
winson

Replies: 2
Views: 13291

PostForum: Questions Related to Antenna Theory   Posted: Thu Jun 24, 2010 10:24 am   Subject: CST Genetic Algorithm Optimizer - Setting
Thanks for reply.
Yes, you are correct. Appreciate your help.
  Topic: CST Genetic Algorithm Optimizer - Setting
winson

Replies: 2
Views: 13291

PostForum: Questions Related to Antenna Theory   Posted: Tue Jun 22, 2010 7:49 pm   Subject: CST Genetic Algorithm Optimizer - Setting
Hi everybody,

I'm now using the CST genetic algorithm optimizer to optimize the gain of my antenna, total 16 parameters is involve in optimization.

I'm having problem on putting value on the s ...
  Topic: CST Curve results problem (Parameter sweep & Direct solv
winson

Replies: 2
Views: 14760

PostForum: Questions Related to Antenna Theory   Posted: Wed Nov 11, 2009 6:18 pm   Subject: CST Curve results problem (Parameter sweep & Direct solv
Hi bigSteve,

Thanks for your clear explanation.

I have also try to unwrap one of the phase curve and now it show that they are exactly the same.
  Topic: Achieve good return loss in low freq patch antenna?
winson

Replies: 6
Views: 21306

PostForum: Questions Related to Antenna Theory   Posted: Wed Nov 11, 2009 6:13 pm   Subject: Achieve good return loss in low freq patch antenna?
Hi,

I'm just aware that you leave a message here. Yes, it is a L-Probe Patch antenna and that project already finish.

Thanks for your suggestion. The BW requirement is about to cover 800MHz to 9 ...
  Topic: CST Curve results problem (Parameter sweep & Direct solv
winson

Replies: 2
Views: 14760

PostForum: Questions Related to Antenna Theory   Posted: Tue Nov 10, 2009 7:59 pm   Subject: CST Curve results problem (Parameter sweep & Direct solv
Hi Friends,

I'm trying to simulate the phase of the single element for reflectarray.

My problem is with the same model i getting two different phase curve, one phase curve is generated from dir ...
  Topic: Achieve good return loss in low freq patch antenna?
winson

Replies: 6
Views: 21306

PostForum: Questions Related to Antenna Theory   Posted: Fri Jul 17, 2009 7:12 am   Subject: Achieve good return loss in low freq patch antenna?
Thanks for sharing your valuable experience.
  Topic: Achieve good return loss in low freq patch antenna?
winson

Replies: 6
Views: 21306

PostForum: Questions Related to Antenna Theory   Posted: Mon Jul 13, 2009 8:09 am   Subject: Achieve good return loss in low freq patch antenna?
-30dB is just an example, actually what i desire is have a return loss of more than -10dB at the same time maintain the wide bandwidth. Currently, i have design the antenna to have a good "bandwi ...
 
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