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Ansoft Designer / Ansys Designer 在线帮助文档：

Nexxim Simulator >
Nexxim Component Models >
Microstrip Elements >
   Bend, Arbitrary Angle       

Bend, Arbitrary Angle

 

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Netlist Form

Axxxx n1 n2 W=val ANG=val M=val
COMPONENT=ms_bend_arbitrary_angle SUBSTRATE=substrate_name

n1 and n2 are the names of the nodes attached to the arbitrary-angled bend.
The entry COMPONENT=ms_bend_arbitrary_angle is required.
The entry SUBSTRATE=substrate_name identifies the microstrip substrate model name selected for the design (see Selecting a Microstrip Substrate). See the Microstrip (MS) Substrate for information on this substrate type.

 


Arbitrary-Angle Bend Instance Parameters

Parameter

Description

Unit

Default

W

Width of line

Meter

0.001

ANG

Angle of bend

Degree

45

M

Miter ratio (S/D in diagram). Range is from 0 (no miter) to 1

None

3

Netlist Example

Abend1 1 2 W=3e-4 ANG=30 M=0.3
+ COMPONENT=ms_bend_arbitrary_angle SUBSTRATE=FR4

where FR4, the selected layout technology or substrate type, has a definition such as:

.SUB FR4 MS( H=7.6200e-004 Er=4.4 TAND=0.02 TANM=0
+ MSat=0 MRem=0 HU=0.00508 MET1=1.72413793103448
+ T1=1.7145e-005 RGH=0mil)

Notes

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

2. [Microstrip] The frequency should be below the cutoff frequency of the first higher mode on the microstrip:

 

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Where:

C0 = speed of light in free space,

Weff = effective width of microstrip,

Ereff = effective dielectric constant

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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