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System Component Models >
Microstrip >
MS Spiral Inductor (MSSPI)

MS Spiral Inductor (MSSPI)

Properties	Description	Units	Default	Range
N	Number of turns	none	Required	> 0
W	Conductor width	m	Required	> 0
S	Conductor spacing	m	Required	> 0
R	Inside radius of innermost turn	m	Required	> W
T	Conductor thickness	m	Substrate metallization thickness definition	> 0
RB	Bulk resistivity of the conductor	micro-Ohm * cm	Substrate metallization resistivity definition	> 0
OPT	Indicates the existence or not of a ground plane beneath the inductor	none	GND	[GND,NG]
sub	Substrate name	none	Required	string
CoSimulator	Simulation engine	none		Planar EM
CoSimStackup	Stackup used for simulation	none	Layout Stackup	Layout Stackup, Footprint stackup, Substrate

Notes

1. The innermost turn radius, R, must be greater than the line width, W.

2. This model is not recommended for use beyond the first resonant point.

3. The inductor model is a partial representation of a physical inductor. Air bridges are required to connect the interior end of the inductor to the rest of the circuit. The air bridges must be modeled separately.

Netlist Form

MSSPI:NAME n1 n2 N=val W=val S=val R=val [T=val] [RB=val]
+ [OPT={GND,NG}] SUB=label

Netlist Example

MSSPI:1 1 2 N=5.05 W=10MIL S=10MIL R=30MIL OPT=GND SUB=SUB1

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

References

HFSS视频教程 ADS视频教程 CST视频教程 Ansoft Designer 中文教程


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