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利用ADS建立电感以及变压器模型

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利用ADS建立电感以及变压器模型,单端、差分,巴伦结构,方形、正八边形,对称、非对称,抽头,圈数、线宽、间距、内外径可调,生成Pcell,可变参数元件。可以指定采用的金属层以及过孔层。缺点是变压器结构比较固定,无法生成任意的初、次级线圈感值。
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CHEN, Jason 2018.04.17
Application Engineer, Keysight Technologies

2
• Basics of Spiral Inductors
• Inductor basics
• Technology basics
• Inductor P-Cell Design on ADS
• Basic of ADS Environment
• The Easy Way: Coilsys
• The Hard Way: Use AEL Macro
• Inductor Simulation Using Momentum
• Basic of emSetup
• Recommended Setting
• Inductor Modeling on ADS
• The Easy way: Coilsys Synthesis, Finder & AMC
• The Hard way: Expression and Optimization

3
Ref: C. Yue, C. Wong, “Design Strategy of On-Chip Inductors for Highly Integrated RF Systems”, 1999.

4
• Design Parameters:
• D: outer diameter
• W: metal width
• S: spacing between turns
• N: number of turns
• Process Parameters:
• Substrate resistivity
• Metal option selection
• Thickness of top metal
• Metal layer to form spiral
• Ls: Low-frequency inductance.
• Rs: Low-frequency resistive loss of a metal and
skin effect.
• Cs: arises from the overlap of the cross-under
with the rest of the spiral. The lateral
capacitance from turn to turn is included.
• Cox: capacitance between the spiral and the
substrate
• Rsi: substrate loss
• Csi: capacitance of the substrate
I M PAC T S O F E AC H C O M P O N E N T S

5
• Inductance Calculation
• Quality Factor Calculation
• 2-port to Differential 1-port
• Inductance (Ls)
• Single-ended Inductance
• Differential Inductance
• Quality Factor (Q)
• Single-ended Quality factor
• Differential Quality factor
• Self-Resonate Frequency (Fsr)
• Single-ended Fsr
• Differential Fsr
P E R F O R M AN C E M AT R I X
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