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Open Stub, Physical Length with Reference

Open Stub, Physical Length with Reference

Netlist Form

An instance of an ideal open stub, physical length with reference node has the following netlist syntax:

Axxx n1 n2 P=val Z=val K=val A=val F=val COMPONENT=ideal_open_stub_physical

n1 is the name of the node attached to the open stub. n2 is the name of the reference node. The entry COMPONENT=ideal_open_stub_physical identifies the element as an ideal open stub, physical length (with or without a reference node).

**Ideal Open Stub, Physical Length with Reference, Instance Parameters**
Parameter	Description	Units	Default
P	Physical length	Meter	0.01
Z	Characteristic impedance	Ohm	50.0
K	Effective dielectric constant		1.0
F	Reference frequency	Hz	1.0e9
A	Attenuation constant at reference frequency	dB/m	0.0

Netlist Example

A44 Port1 Port3 P=10e-3 COMPONENT=ideal_open_stub_physical

Notes

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

2. The open stub 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 open stub model is equivalent to the transmission line model with a negative length terminated by an open.

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