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What does a S-parameter larger than 1 means?
Posted 20.12.2015, 16:47 GMT-5 RF & Microwave Engineering Version 5.1 1 Reply
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I have a structure with 2 ports and periodic boundaries on the walls. In one port, excitation is on and in the other one, it is off. When I compute, I get a s-parameter of 1.5 for the transmission. I use these:
abs(emw.S11)^2
and
abs(emw.S12)^2
How is it possible? What does it mean? Does anyone have any idea?
Thanks,
--
Hadi Maghsoudiganjeh
abs(emw.S11)^2
and
abs(emw.S12)^2
How is it possible? What does it mean? Does anyone have any idea?
Thanks,
--
Hadi Maghsoudiganjeh
1 Reply Last Post 20.12.2015, 18:31 GMT-5
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Posted:
9 years ago
I agree that that shouldn't happen, but don't know why it did. Have you tried various changes in boundary conditions, meshes, element order, etc.? Have you looked at arrow-plots of the fields and power-flow directions? Have you reviewed your port specifications in detail, and considered using different kinds of ports? You may have set up some kind of pathological configuration.