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Nexxim Simulator >
Nexxim Component Models >
Stripline Elements >
Bend, Unmitered

Bend, Unmitered

Netlist Form

Axxxx n1 n2 W1=val W2=val [NSUM=val]
COMPONENT=unmitered_bend SUBSTRATE=substrate_name

n1 and n2 are the names of the nodes attached to the unmitered bend. The entry COMPONENT=unmitered_bend identifies the element as an unmitered bend.

The entry SUBSTRATE=substrate_name identifies the Stripline substrate model name selected for the design (see Selecting a Stripline Substrate). See the Stripline (SL) Substrate for information on this substrate type.

**Unmitered Bend Instance Parameters**
Parameter	Description	Unit	Default
W1	Width of line 1	Meter	0.001
W2	Width of line 2	Meter	0.001
NSUM	Number of modes considered in the field expansion	None	3

Netlist Example

A23 Port1 Port2 W1=3e-4 W2=5e-3 NSUM=3
+ COMPONENT=unmitered_bend SUBSTRATE=SL1

where SL1, the selected layout technology or substrate type, has a definition such as:

.SUB SL1 SL( B=0.001524 Er=4.40000000000000
+ TAND=0.0200000000000000 MET1=1.72413793103448
+ T1=1.7145e-005 RGH=0mil)

Notes

1. [All substrates] This element refers to a right angle bend, where the two intersecting lines can be defined with different widths. The outer corner of the bend is not mitered.

2. [All substrates] Reference planes coincide with the inside vertex of the corner.

References

1. Wolff, G. Kompa, and R. Mehran, “Calculation method for microstrip discontinuities and T-junctions,” Electron. Lett., Vol. 8, 1972, pp. 177-179.

2. G. Kompa, and R. Mehran, “Planar waveguide model for calculating microstrip components,” Electron. Lett., Vol. 11, 1975, pp. 459-460.

3. T. Okoshi, Planar Circuits for Microwaves and Lightwaves, Springer-Verlag, Berlin, New York, 1983.

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