what is rf gamma value
时间:04-09
整理:3721RD
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If I add a port to a microstip line and run a simulation, the value of Gamma returned is always:
Re(Gamma) = 0
im(Gamma) = 1
I'm assuming this Gamma is the standard,
Gamma = Alpha + j Beta
where Alpha is the attenuation and Beta the propagation constant. I can calculate the Beta from the slope of the S11 angle plot (and it agrees well with theory) and I can see that the attenuation Alpha is not exactly zero from the S11 mag plot.
Do I need to renormalize or maybe set some switch to have the Gamma value displayed properly or am I completely misinterpreting something here?
Thank you,
JimR
Re(Gamma) = 0
im(Gamma) = 1
I'm assuming this Gamma is the standard,
Gamma = Alpha + j Beta
where Alpha is the attenuation and Beta the propagation constant. I can calculate the Beta from the slope of the S11 angle plot (and it agrees well with theory) and I can see that the attenuation Alpha is not exactly zero from the S11 mag plot.
Do I need to renormalize or maybe set some switch to have the Gamma value displayed properly or am I completely misinterpreting something here?
Thank you,
JimR
gamma is basically reflection coefficient u can check from that point of view
I don't think that is correct. This is a one port system so the reflection coefficient is given by the S11 parameter. In fact from this correctly simulated S11 parameter (the reflection coefficient) I can calculate the complex propagation constant and the values agree very well with measurement. I just think that there is a way to use the Ansoft tool to calculate it for me.
The Ansoft documentation clear states:
"complex propagation constants (gamma parameters)"