Advanced Design in Keysight Genesys with Modelithics Models 1
What We ll Cover: What is the Modelithics COMPLETE Library? What are the key specialized features of Modelithics models for accurate simulation and quickly meeting design goals? Matching network optimization example in Keysight Genesys Latest updates and features of the Modelithics COMPLETE Library for Keysight Genesys 2
The Modelithics COMPLETE Library Modelithics models are measurement-based simulation models for RF and microwave electronic components, that feature many advanced features and capabilities The Modelithics library is a collection of these models: Over 520 models from over 50 popular vendors representing over 16,000* electronic components! The Modelithics COMPLETE Library includes: CLR Library NLT Library NLD Library SLC Library PLUS RLC component Microwave Global Models Non-linear transistor models Non-linear diode models System Level Component (filters, amplifiers, couplers, etc.) -Substrate Library -SPAR Library -Example Projects * Represents Modelithics COMPLETE Library for Keysight Genesys v17.2. Counts may vary by simulator. 3
Modelithics Microwave Global Models for Fast Design Optimization Part Value Scaling Solder Pad De-embedding Statistical Analysis Pad Scaling Horizontal/Vertical Orientation Substrate Scaling Part values can be optimized Substrate properties can be varied to evaluate effect on the design Statistical analysis can be used to predict yield and look into cost savings The models are compatible with EM co-simulation 4
Simple Matching Network Design Goals/Specs Use a lumped element design Input impedance series RLC: R=72Ω, C=10pF, L=0.405nH Output impedance: 50Ω Center frequency: 2.5GHz Substrate: 10 mil Rogers 4350B 5
Matching Network Synthesis in Keysight Genesys A quick way to start the synthesis is to select Impedance Match in the Getting Started window after launching Genesys. 6
Frequency Range *Center frequency = 2.5GHz Input = Series RLC Enter values for input impedance Match Network = LC Bandpass Order = 3 Output = 50Ω Enter Matching Network Properties 7
Ideal Matching Network Calculated Port_1 ZO=72 Ω Load C1 C=10 pf L1 L=0.405 nh C2 C=3.902 pf L2 L=1.099 nh L3 L=7.412 nh C3 C=3.419 pf C4 C=0.683 pf C5 C=1089.029 pf L4 L=1.033 nh Port_2 ZO=50 Ω Element Value C2 (pf) 3.902 C3 (pf) 3.419 C4 (pf) 0.683 S11=S22 C5 (pf) 1089.029 L2 (nh) 1.099 L3 (nh) 7.412 L4 (nh) 1.033 8
Next: Add Substrate and Replace Ideal Components with Modelithics Microwave Global Models 10 mil Rogers 4350B from Modelithics Substrate library Capacitor and inductor models from Modelithics CLR library Port_1 ZO=72 Ω IND_CLC_0302_001_1 CAP_PPI_0201N_001_2 IND_CLC_0302_001_3 Part=CoilCraft 0302CS Part="PassivePlus 0201N, ultra-low ESR" Part=CoilCraft 0302CS L=1.099 nh C=3.419 pf L=1.033 nh Sim_mode=0 - Full Parasitic Model Sim_mode=0 - Full Parasitic Model Sim_mode=0 - Full Parasitic Model Load C1 C=10 pf L1 L=0.405 nh CAP_PPI_0201N_001_1 Part="PassivePlus 0201N, ultra-low ESR" C=3.902 pf Sim_mode=0 - Full Parasitic Model IND_CLC_0302_001_2 Part=CoilCraft 0302CS L=7.412 nh Sim_mode=0 - Full Parasitic Model CAP_KMT_0603_001_1 Part=KEMET C0603 C=1089.029 pf Sim_mode=0 - Full Parasitic Model CAP_PPI_0201N_001_3 Part="PassivePlus 0201N, ultra-low ESR" C=0.683 pf Sim_mode=0 - Full Parasitic Model Port_2 ZO=50 Ω *After adding parasitic models (using the ideal MN values), the matching network does not meet the design goals. 9
Re-optimize Matching Network Before (pink and green) and After (red and blue) optimization with parasitic models. Element Ideal Optimized with Modelithics models C2 (pf) 3.902 4.923 C3 (pf) 3.419 4.171 C4 (pf) 0.683 0.523 C5 (pf) 1089.029 3332.719 L2 (nh) 1.099 1.505 L3 (nh) 7.412 6.405 L4 (nh) 1.033 0.901 10
Add Microstrip Elements and Re-Optimize Microstrip elements are needed for evaluating any layout effects on the design. If any corrections are needed, it can be caught and updated in simulation before fabrication. Port_1 ZO=72 Ω IND_CLC_0302_001_1 Part=CoilCraft 0302CS L=1.505 nh Sim_mode=0 CAP_PPI_0201N_001_2 Part="PassivePlus 0201N, ultra-low ESR" C=4.171 pf Sim_mode=0 IND_CLC_0302_001_3 Part=CoilCraft 0302CS L=0.901 nh Sim_mode=0 Load C1 C=10 pf L1 L=0.405 nh TL1 CSTP1 CAP_PPI_0201N_001_1 CSTP2 W=21.7 mil [WLin] Part="PassivePlus 0201N, ultra-low ESR" C=4.923 pf Sim_mode=0 TL2 LSTP1 LSTP2 W=21.7 mil [WLin] 1 2 TL3 W=21.7 mil [WLin] TE1 TL4 W=21.7 mil [WLin] TL6 CSTP3 CSTP4 W=21.7 mil [WLin] 1 2 TL7 W=21.7 mil [WLin] TE2 TL8 W=21.7 mil [WLin] TL10 W=21.7 mil [WLin] CSTP7 CAP_KMT_0603_001_1 CSTP8 TL11 LSTP5 Part=KEMET C0603 W=21.7 mil [WLin] C=3332.719 pf Sim_mode=0 LSTP6 Port_2 TL12 W=21.7 mil [WLin] ZO=50 Ω LSTP3 CSTP5 IND_CLC_0302_001_2 Part=CoilCraft 0302CS L=6.405 nh Sim_mode=0 CAP_PPI_0201N_001_3 Part="PassivePlus 0201N, ultra-low ESR" C=0.523 pf Sim_mode=0 LSTP4 CSTP6 TL5 W=24 mil L=12 mil TL15 W=24 mil L=12 mil VH1 VH2 CAD Layout TL13 W=24 mil L=12 mil TL14 W=24 mil L=12 mil Genesys Layout 11
Before and After Optimization with Microstrip Elements Added Before Opt S11 S22 Ideal After Opt 12
Choose Available Component Values* Element Ideal Optimized with Modelithics models Re-optimized with Microstrip Layout Available Values C2 (pf) 3.902 4.923 1.636 1.6 C3 (pf) 3.419 4.171 4.322 4.3 C4 (pf) 0.683 0.523 0.103 0.1 C5 (pf) 1089.029 3332.719 3299.643 3300 L2 (nh) 1.099 1.505 2.279 2.1 L3 (nh) 7.412 6.405 3.123 3 L4 (nh) 1.033 0.901 0.782 0.67 Final design response *Discrete optimization is coming soon in the 2018 releases of Genesys and Modelithics, so this step will be automatic! 13
What s New in the Modelithics COMPLETE Library for Keysight Genesys? 48 new models in v17.2 for: ATC and AVX capacitors Chilisin ferrite beads Coilcraft inductors Johanson capacitors KEMET capacitors KOA resistors Murata capacitors and inductors Piconics conical inductors Presidio capacitor ST Micro capacitors Taiyo Yuden capacitors TDK capacitors and inductors Würth Elektronik inductors Skyworks Schottky diode Guerrilla RF LNA (SPAR/noise) Vanguard Electronics inductors and transformers (SPAR) Many new models coming in the next library release! (Planned Q3 2018) New features to be implemented in the upcoming Genesys SW release that take advantage of Modelithics model capabilities, including Vendor Part Synthesis and discrete optimization 14
Explore the capabilities of X-Parameters models 15
X-Parameters Models Small Signal Small signal S-Parameters and Noise Parameters performance SP and NP for Mini-Circuits PGA-103+ amplifier Red=Modeled @ 5V Blue=Modeled @ 3V 16
X-Parameters Models Large Signal P1dB vs frequency and vendor data Red=Modeled Blue=Measured Black=Desired Output Power Red=Gain Blue=Compression Power and frequency sweep of an amplifier X- Parameter model Red=S11 at 21dBm Blue=S22 at 21dBm 17
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