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Nexxim Simulator >
Nexxim Component Models >
Microstrip Elements >
   Branch Line Coupler       

Branch Line Coupler

 

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Netlist Format

A branch line coupler length instance has the following netlist format:

AMSCOUPBxxx n1 n2 n3 n4 W1=val W2=val W3=val W4=val W5=val L1=val L2=val L3=val COMPONENT=branch_coupler SUBSTRATE=substrate_name

n1, n2, n3, and n4 are the names of the nodes attached to the coupler. The entry COMPONENT=branch_coupler identifies the element.

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.

 


Branch Line Coupler Instance Parameters

Parameter

Description

Unit

Default

W1

Width of lines connected to nodes n1 and n4

Meter

0.5e-3

W2

Width of lines connected to nodes n2 and n3

Meter

0.5e-3

W3

Width of line from n1 to n4

Meter

0.5e-3

W4

Width of line from n1 to n2

Width of line from n3 to n4

Meter

0.5e-3

W5

Width of line from n2 to n3

Meter

0.5e-3

L1

Length along center line of W4

Meter

2e-3

L2

Half length along center line of W3

Meter

2e-3

L3

Half length along center line of W5

Meter

0


Netlist Example

AMSCOUPB1 net1 Port2 net3 Port4 W1=1e-3 W2=.2e-3 W3=.7e-3
+ W4=.4e-3 L1=1.8e-3 L2=1.5e-3 L3=1.5e-3
+ COMPONENT=branch_coupler 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)




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