淘宝官方店推荐课程在线工具联系方式关于我们

	微波射频仿真设计 Ansoft Designer 中文培训教程 \| HFSS视频培训教程套装
	Agilent ADS 视频培训教程 \| CST微波工作室视频教程 \| AWR Microwave Office

首页 >> Ansoft Designer >> Ansoft Designer在线帮助文档

Ansoft Designer / Ansys Designer 在线帮助文档：

Nexxim Simulator >
Nexxim Component Models >
Microstrip Elements >
Via Pad

Via Pad

Netlist Format

A via pad instance has the following netlist format:

Axxx n1 [n2 n3 n4] [D=val] [DG=val] [W=val]
COMPONENT=viapad SUBSTRATE=substrate_name

n1 through n4 are the names of the nodes attached to the via pad. Any nodes not specified are modeled as open stubs. A fifth node is connected to ground, and is not shown in the syntax. The entry COMPONENT=viapad identifies the element as a via pad. 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.

**Via Through Hole Instance Parameters**
Parameter	Description	Unit	Default
D	Diameter of upper via hole	Meter	0.5e-3
DG	Diameter of lower via hole	Meter	D
W	Width and length of square pad	Meter	1e-3

Netlist Example

A23 Port1 Port2 Port3 Port4 D=0.0005 W=0.001
+ COMPONENT=viapad 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] The pad is connected through a via to a ground.

2. [All substrates] The pad is square.

3. [All substrates] Unconnected nodes are considered to be open.

4. [All substrates] Transitions to connected transmission lines are not included in this model.

HFSS视频教程 ADS视频教程 CST视频教程 Ansoft Designer 中文教程


Copyright © 2006 - 2013 微波EDA网, All Rights Reserved 业务联系：mweda@163.com