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Ansoft Designer / Ansys Designer 在线帮助文档：

System Simulator >
System Component Models >
Microstrip >
   MS Open Stub near Microstrip Edge, Physical Length (MSOSTED, MSOSTED_REF)       

MS Open Stub near Microstrip Edge, Physical Length (MSOSTED, MSOSTED_REF)

 

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Schematic symbol (MSOSTED)

 

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Schematic symbol (MSOSTED_REF)

 

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Properties

Description

Units

Default

Range

W

Microstrip line width

m

Required

> 0

S

Spacing between strip and edge

m

Required

> 0

P

Physical length

m

Required

 

sub

Substrate name

none

Required

string

 

Notes

1. The physical model using physical length includes the open end length correction.

2. This model includes radiation effects if a cover height is not supplied (i.e., open structure.)

3. The MSOSTED model is equivalent to a transmission line model followed by an open model. This is also true in the case of negative length specifications which are used for deembedding purposes. Note that in the latter case, the OST model is equivalent to the TRL model with a negative length terminated by an open.

4. The following limits apply:

MS near substrate edge:

6 £ εr £ 18
For HU > 40H:
0.01 £ W/H £ 10 and 0.025 £ S/H £ 5
For HU £ 40H:
0.2 £ W/H £ 4 and 0.5 £ S/H £ 1.8

Netlist Form

MSOSTED:NAME n1 [ n2 ] W=val S=val P=val SUB=label

Netlist Example

MSOSTED:1 1 W=25MIL P=0.387IN S=0.05IN SUB=SUB1

where sub1 needs to be defined in the corresponding .sub statement.

References



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