Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

A guide to Floquet port in HFSS v11

Status
Not open for further replies.

Feri4030

Junior Member level 3
Joined
Feb 20, 2009
Messages
31
Helped
13
Reputation
26
Reaction score
12
Trophy points
1,288
Location
Persia
Activity points
1,509
floquet port hfss

A guide to Floquet port in HFSS v11
 

monster528

Junior Member level 2
Joined
Sep 4, 2009
Messages
23
Helped
5
Reputation
10
Reaction score
4
Trophy points
1,283
Activity points
1,378
hfss floquet

This is very useful for me. Thank you!
 
  • Like
Reactions: yiyi

    yiyi

    points: 2
    Helpful Answer Positive Rating

radio09

Newbie level 2
Joined
Sep 16, 2009
Messages
2
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Location
asia
Activity points
1,292
hfss v11

Hi,
Could some one help me in understand how to plot the result of a single sell cell of an FSS structure simulated using floquet port as described in the above literature HFSSFloquet.pdf. I would like to know how to get the transmission and reflection coefficient. Also the S11.
My first post here and am trying to learn the tool.
Thanks a lot.
 

Feri4030

Junior Member level 3
Joined
Feb 20, 2009
Messages
31
Helped
13
Reputation
26
Reaction score
12
Trophy points
1,288
Location
Persia
Activity points
1,509
floquet port

radio09 said:
Hi,
Could some one help me in understand how to plot the result of a single sell cell of an FSS structure simulated using floquet port as described in the above literature HFSSFloquet.pdf. I would like to know how to get the transmission and reflection coefficient. Also the S11.
My first post here and am trying to learn the tool.
Thanks a lot.
Note that HFSS calculates generalized S-param which means that the reflection coefficient equals to S11 and transmission coefficient is equal to the S12.

If you want to obtain conventional S-param (like those Network analyzer calculates) u should use some "post processing" to normalize the S-param to some impedance (say 50 ohm) or u can simply use the formula conversion from reflection coefficient to normalized S-param, these formulas can be found in many books like microwave engineering, Pozar
 

myemworld

Junior Member level 2
Joined
Jan 25, 2011
Messages
24
Helped
11
Reputation
22
Reaction score
10
Trophy points
1,283
Activity points
1,414
Hi,

Quick note.

For the version 11 release, the following restrictions apply:
• Currently, only modal projects may contain Floquet ports.
• Boundaries that are adjacent to a Floquet port must be linked boundaries.
• Fast frequency sweep is not supported. (Discrete and interpolating sweep are supported.)

Version 13 don't seem to have those limitations. Update and enjoy like me :)

Joline.
 

tohoma

Junior Member level 1
Joined
Dec 26, 2011
Messages
18
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,283
Activity points
1,358
helo,
Is there any (pdf) about the excitation by an incident wave?

thanks in advance
 

cosmefulanito

Newbie level 5
Joined
Sep 11, 2009
Messages
8
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,337
Hi everyone,


If I have an antenna that must be feed at the bottom of the air box (where the Floquet port should be positioned) how can I make a simulation in this mode?

Thanks
 

friendchip

Newbie level 4
Joined
Oct 16, 2012
Messages
5
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,283
Activity points
1,303
Hi everyone,


If I have an antenna that must be feed at the bottom of the air box (where the Floquet port should be positioned) how can I make a simulation in this mode?

Thanks
In my opinion, floquet port is also a kind of feed or excitation.the mode TE and TM should cover all the situation, I think. I wonder if my opinion is right.
 

DeboraHarry

Full Member level 5
Joined
Dec 3, 2011
Messages
275
Helped
48
Reputation
94
Reaction score
43
Trophy points
1,308
Location
UK
Activity points
3,905
Re: floquet port

Note that HFSS calculates generalized S-param which means that the reflection coefficient equals to S11 and transmission coefficient is equal to the S12.
The transmission coefficient from port 1 to port 2 is S21, not S12.
 

Feri4030

Junior Member level 3
Joined
Feb 20, 2009
Messages
31
Helped
13
Reputation
26
Reaction score
12
Trophy points
1,288
Location
Persia
Activity points
1,509
In my opinion, floquet port is also a kind of feed or excitation.the mode TE and TM should cover all the situation, I think. I wonder if my opinion is right.
I agree with friendchip, but it should be noticed that Floquet port is matched in all frequencies, however, the feed is not. I think first you should make sure that the Floquet port (with specific settings) and the feed launch the same field pattern (i.e. same TE/TM modes) so these two will have the same matching condition. You can easily figure out which mode is excited by the feed (using the geometry of the feed and it's probably one of the fundamental modes) and configure the Floquet port to excite the same mode.

Why don't you use the feed as excitation?

Good Luck
 

jarvisedwin

Newbie level 6
Joined
Oct 11, 2013
Messages
11
Helped
2
Reputation
4
Reaction score
2
Trophy points
3
Activity points
35
Very useful for me thank you for uploading it...........
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top