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# Coplanar Coupled-Lines Data Definitions C_NL_TYP

### Symbol :

### Illustration :

### Parameters :

> GW = Width of ground planes
> GND_MET = Identification of metal level for the ground planes (Used for layout only)
> SG1 = Slot between first line and left ground plane
> SG2 = Slot between last line and right ground plane
> W1 = Width of line 1
> LEVEL1 = Identification of metal level for line 1
> S1_2 = Slot between line 1 and line 2
> W2 = Width of line 2
> LEVEL2 = Identification of metal level for line 2
> S2_3 = Slot between line 2 and line 3
> W3 = Width of line 3
> LEVEL3 = Identification of metal level for line 3
> S3_4 = Slot between line 3 and line 4
> W4 = Width of line 4
> LEVEL4 = Identification of metal level for line 4
> S4_5 = Slot between line 4 and line 5
> W5 = Width of line 5
> LEVEL5 = Identification of metal level for line 5
> S5_6 = Slot between line 5 and line 6
> W6 = Width of line 6
> LEVEL6 = Identification of metal level for line 6
> S6_7 = Slot between line 6 and line 7
> W7 = Width of line 7
> LEVEL7 = Identification of metal level for line 7
> S7_8 = Slot between line 7 and line 8
> W8 = Width of line 8
> LEVEL8 = Identification of metal level for line 8
> S8_9 = Slot between line 8 and line 9
> W9 = Width of line 9
> LEVEL9 = Identification of metal level for line 9
> S9_10 = Slot between line 9 and line 10
> W10 = Width of line 10
> LEVEL10 = Identification of metal level for line 10

### Range of Usage :

> W1 to W10 = 0.5.n.DL* n=2,3,4,...
> S1_2 to S9_10 = 0.5.n.DL* n=1,2,3,...
> SG1, SG2 = 0.5.n.DL* n=1,2,3,...
> GW = 0.5.n.DL* n=2,3,4,...
> LEVEL1 to LEVEL10 = 1 or 2 (DEFAULT-Foundry)
> GND_MET = 1 or 2 (DEFAULT-Foundry)
> * ) see C_GRID for information on DL

### Notes/Equations/References :

> 1. The geometrical dimensions of coupled coplanar lines are defined in the C_NL_TYP data item.
> 2. The coupled line parameters (W1 to W10, S1_2 to S9_10, SG1, SG2 and GW) must be chosen in a way that metallization corners lie on the grid (see Range of Usage). However, if the user specify a maximum deviation from grid size ACC (see C_GRID for details), the simulator can adapt the incompatible structure parameters into the grid by changing these parameter slightly (warnings will be reported). For ACC=0 (no deviation from grid) the simulator reports error and the next compatible value will be recommended in the error message. Note that these changes are not considered by automatic layout generation.
> 3. Depending on number of lines of related element, some parameters in C_NL_TYP are ignored. For example for 5 coupled coplanar lines (element C_5COUP), only the parameters with an index less than 5 are used (it means W1 to W5, LEVEL1 to LEVEL5 and S1_2 to S4_5). The parameters GW, SG1, SG2 and GND_MET are always used.
> 4. In the presented version all center lines must have the same metal level LEVEL.
> 5. In present version, GND_MET is used for layout generation only. For the simulation, GND_MET is set equal to LEVEL1.

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