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 Ansoft Designer / Ansys Designer 在线帮助文档：
Layout Editor User Guide >
Drawing a Model >
Drawing Geometric Objects >
Drawing a Via >
Selecting Load Types for 2.5D Vias
Selecting Load Types for 2.5D Vias
When defining the properties of a 2.5D via, you
must specify the type of load being applied to the signal or ground
layer. This is done in the Via Properties
window, under the Upper Layer
or Lower Layer tab, depending
on which layer contains the load. You may only define a load at one
end of the via. The load on the other end is then set to zero.
Select one of the following load types from the
Excitation/Load Type list:
![[spacer]](1p.gif)
complex
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A complex number with a real and
imaginary part.
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RLC series
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The resistor, inductor, and capacitor
are in series.
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RL series, C parallel
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The resistor and inductor are in
series, and they are in parallel with the capacitor.
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RC series, L parallel
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The resistor and capacitor are
in series, and they are in parallel with the inductor.
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LC parallel, R series
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The inductor and capacitor are
in parallel, and they are in series with the resistor.
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LC series, R parallel
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The inductor and capacitor are
in series, and they are in parallel with the resistor.
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RC parallel, L series
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The resistor and capacitor are
in parallel, and they are in series with the inductor.
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RL parallel, C series
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The resistor and inductor are in
parallel, and they are in series with the capacitor.
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RLC parallel
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The resistor, inductor, and capacitor
are in parallel.
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coaxial excitation
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The via is an external coaxial
probe source that excites the structure as a port. A probe source represents
a coaxial-type connector with its center pin extending
from the ground plane to any metal layer.
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If you select complex,
you will specify the real and imaginary portions of the load in ohms.
If you select any RLC combination, you will specify
the resistance value in ohms, the inductance value in nanohenrys, and
the capacitance in picofarads.
If you select coaxial
excitation, you will specify the desired current in amps,
the phase in degrees, and the coaxial source impedance in ohms.
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