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

port setup issue-lumped gap source vs. wave port

Status
Not open for further replies.

mike_bihan

Full Member level 3
Joined
Mar 21, 2002
Messages
185
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,296
Activity points
1,544
port setup issue?

Can anyone tell the difference of accuracy between "lumped gap source" and "wave port"
 

Sync

Junior Member level 1
Joined
Mar 30, 2002
Messages
19
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
104
Check the manual for differences.

for CPW, wave port should be used, if your cpw port are not in very limited space.
 

loucy

Advanced Member level 1
Joined
Aug 26, 2001
Messages
414
Helped
24
Reputation
48
Reaction score
11
Trophy points
1,298
Activity points
4,657
I think the wave-port is more accurate (closer to measurement) than the lumped-gap source for any problem. The problem is it is difficult to define the wave port in some cases.
 

mwpro

Member level 4
Joined
Apr 20, 2001
Messages
71
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,288
Activity points
700
I think the best way is to run two simulation of the same structure and get some feeling of the accuracy of lumped gap port

regards
mwpro
 

loucy

Advanced Member level 1
Joined
Aug 26, 2001
Messages
414
Helped
24
Reputation
48
Reaction score
11
Trophy points
1,298
Activity points
4,657
Everybody will be happy if the two simulations agree with each other. What if they don't?
 

mwpro

Member level 4
Joined
Apr 20, 2001
Messages
71
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,288
Activity points
700
As mentioned earlier, wave port is more accurate. Lump gap port gives an close to accurate approximation.
 

pewang

Full Member level 3
Joined
Feb 19, 2003
Messages
155
Helped
15
Reputation
30
Reaction score
13
Trophy points
1,298
Location
China PRC
Activity points
1,328
lump gap source is virtual sours,can not related with real excite,I think.
 

eenaoo

Newbie level 1
Joined
Apr 18, 2003
Messages
1
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
12
I usually only used lumped port when analysing an internal impedance in the structure. Waveguide ports are the one to use on CPW, but you have to take care to define the dimension of the port correct. Make sure that you only propagate CPW mode form the port and not other strange waveguide modes. Do a port simulation and look at the field in the port!!!

Öistein
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top