Table of Contents
Virtuoso Spectre RF Tools 清晰版
Module 1 Introduction
There are no labs for this module. ..... 1-1
Module 2 PSS and Swept PSS Analysis
Lab 2-1 Getting Started ..... 2-1
Logging In...... 2-1
Starting Cadence Software................. 2-1
Lab 2-2 Running a Voltage Conversion Gain Simulation ...... 2-3
Opening the ne600 Schematic ........... 2-3
Editing the Port Symbols . 2-5
Setting Up the Simulation Environment.............. 2-8
Setting Up the Default Plot Output.. 2-10
Setting Up the PSS Simulation ........ 2-11
Verifying the Fundamental (Beat) Frequency ... 2-12
Running the PSS Simulation............ 2-14
Lab 2-3 Displaying the Voltage Conversion Gain ................ 2-16
Using Direct Plot—Method 1 ......... 2-16
Using Direct Plot—Method 2 ......... 2-19
Lab 2-4 Running a 1 dB Compression Point Simulation ...... 2-23
Setting Up for Swept PSS................ 2-23
Setting the Analysis Options............ 2-24
Plotting the 1 dB Compression Point................. 2-26
Module 3 PAC Analysis
Lab 3-1 Running a PAC Conversion Gain Simulation ........... 3-1
Setting Up the Simulation Environment.............. 3-5
Setting Up the PSS Simulation .......... 3-6
Setting Up the PAC Simulation ......... 3-8
Running the PSS Simulation Followed by PAC 3-10
Plotting the Conversion Gain........... 3-11
Running and Plotting PAC Results with Real Frequency Values ....... 3-14
Lab 3-2 Running a Swept Small-Signal IP3 Simulation ....... 3-18
Modifying the RF Port Parameters for an IP3 Simulation... 3-18
Setting Up the Swept PSS Simulation ............... 3-19
Setting Up the Single Point PAC Simulation .... 3-21
Running a PSS Sweep Simulation Followed by PAC......... 3-23
Plotting the IP3 Curve.... 3-24
Module 4 PXF Analysis
Lab 4-1 RF Conversion Gain Simulation.............. 4-1
Modifying the RF Port Parameters for PXF Analysis ........... 4-1
Setting Up the Simulation Environment.............. 4-4
Setting Up the PXF Simulation ......... 4-4
Running the PSS Simulation Followed by PXF .. 4-9
Plotting the RF to IF Conversion Gain ................ 4-9
Running and Plotting PXF Results with Real Frequency Values........ 4-11
Lab 4-2 Power Supply Rejection....... 4-13
Plotting the Power Supply Rejection ................. 4-13
Module 5 PNoise Analysis
Lab 5-1 Noise Figure and Output Noise Analysis 5-1
Setting Up the Simulation Environment.............. 5-5
Running the PSS Simulation Followed by PNoise................ 5-9
Plotting the Output Noise and Noise Figure........ 5-9
Lab 5-2 Printing the Noise Summary Report ...... 5-13
The Noise Summary Report ............ 5-13
Lab 5-3 Running a PSS/PNoise Analysis on a Tunable Oscillator ..... 5-15
Oscillator Notes ............. 5-15
Opening the Oscillator Schematic ... 5-16
Setting Up the Simulation Environment............ 5-17
Setting Up the PSS and PNoise Simulation....... 5-18
Running PSS and PNoise Simulation ................ 5-23
Plotting the Simulation Results........ 5-23
Table of Contents Virtuoso Spectre RF Tools
Lab 5-4 Calculating Time-Varying Instantaneous Noise Power......... 5-28
Opening the Design ....... 5-28
Setting Up the Simulation Environment............ 5-29
Setting Up the PSS Analysis............ 5-29
Setting Up the PNoise Analysis....... 5-31
Running the PSS Simulation Followed by PNoise.............. 5-34
Plotting Time Domain Noise Results ................ 5-35
Calculating Time-Varying Noise Power............ 5-36
Module 6 Periodic S-Parameter (PSP) Analysis
Lab 6-1 Periodic S-Parameter (PSP) Analysis ...... 6-1
Setting Up the Simulation Environment.............. 6-5
Setting Up the PSS Simulation .......... 6-6
Setting up the PSP Analysis............... 6-8
Running the Simulation . 6-11
Plotting the Noise Figure ................. 6-11
Plotting Different Types of Noise Figure .......... 6-13
Plotting Gain 6-14
Plotting Periodic S-Parameters ........ 6-16
Module 7 QPSS Analysis
Lab 7-1 Running Simulation with QPSS .............. 7-1
Modifying RF Port Parameters for QPSS Analysis............... 7-1
Setting Up the Simulation Environment.............. 7-4
Setting Up the QPSS Simulation ....... 7-5
Selecting Outputs for Current and Power Plots ... 7-7
Changing the RF Input Power ........... 7-8
Running the QPSS Simulation......... 7-10
Plotting Simulation Results Using WaveScan... 7-10
Plotting Power................ 7-16
Lab 7-2 Simulating IP3 QPSS Intermodulation Distortion... 7-19
Modifying the RF Source in the Schematic....... 7-19
Setting Up and Running the QPSS Sweep Simulation ........ 7-21
Running the Swept QPSS Simulation................ 7-23
Displaying the IP3 Plot .. 7-24
Module 8 QPAC Analysis
There are no labs for this module. ..... 8-1
Module 9 QPAC & QPXF Analysis
Lab 9-1 QPSS Analysis with Small Signal QPAC and QPXF Analyses .. 9-1
Opening the mixer2 Schematic.......... 9-1
Setting Up the Simulation Environment.............. 9-3
Editing Design Variables . 9-4
Setting Up the QPSS Simulation ....... 9-5
Setting Up the QPAC Simulation ...... 9-6
Setting Up the QPXF Simulation....... 9-8
Running the Simulation . 9-10
Plotting the Results ........ 9-11
Plotting Isolation Curves ................. 9-14
Lab 9-2 Running QPSS with QPAC and QPXF Analyses.... 9-16
Setting Up the Simulation................ 9-16
Running the Simulation . 9-17
Plotting the Results ........ 9-17
Plotting the QPXF RF to IF Transfer Function vs. Input Frequency .. 9-21
Plotting the LO Leakage at the IF Output.......... 9-22
Module 10 QPNoise Analysis
Lab 10-1 QPSS Analysis with a Small-Signal Noise Analysis QPNoise . 10-1
Editing the Schematic .... 10-1
Setting Up the Simulation Environment............ 10-7
Setting Up the QPSS Simulation ..... 10-8
Setting Up the QPNoise Simulation 10-9
Editing the Design Variable........... 10-11
Saving Simulation Outputs ............ 10-12
Running the Simulation ................. 10-13
Plotting the Voltage and Power ..... 10-13
Plotting Power.............. 10-17
Plotting the Noise Figure ............... 10-18
Table of Contents Virtuoso Spectre RF Tools
Module 11 QPSP Analysis
Lab 11-1 QPSS Analysis with a Small Signal S-Parameter Analysis QPSP 11-1
Editing the Schematic .... 11-1
Setting Up the Simulation Environment............ 11-5
Setting Up the QPSS Simulation ..... 11-6
Setting Up the QPSP Simulation ..... 11-8
Running the QPSS Simulation Followed by QPSP........... 11-11
Plotting the Results ...... 11-12
Module 12 Envelope Following Analysis
Lab 12-1 Envelope Following Analysis and ACPR................ 12-1
Setting Up the Simulation Environment............ 12-2
Setting Up the ENVLP Simulation.. 12-2
Running the Envelope Following Simulation.... 12-4
Viewing the Envelope Following Results ......... 12-4
Lab 12-2 Following the Change in the Information (Baseband Signal) Through the Circuit....... 12-8
Plotting the Complete Baseband Signal........... 12-15
Plotting the Baseband Trajectory... 12-17
Lab 12-3 Plotting the Adjacent Channel Power Ratio .......... 12-20
Module 13 S-Parameter Analysis
Lab 13-1 S-Parameter Analysis and Plotting ........ 13-1
Reviewing the twa3b Schematic...... 13-1
Setting Up the Simulation Environment............ 13-2
Setting the Path to the S-Parameter Data Files .. 13-3
Choosing Analyses ........ 13-3
Simulating The Design .. 13-6
Viewing Simulation Results with Direct Plot.... 13-6
Plotting the Gain of the Circuit........ 13-9
Plotting VSWR and Gain............... 13-10
Plotting S11 and S22 on a Smith Chart ........... 13-12
Lab 13-2 Plotting Stability Circles .... 13-15
Setting Up the Design .. 13-15
Setting Up the Simulation Environment.......... 13-16
Setting the Path to the S-Parameter Data File.. 13-17
Choosing Analyses ...... 13-18
Running the Simulation ................. 13-20
Viewing Simulation Results with Direct Plot.. 13-21
Lab 13-3 Simulating Linear Two-Port Noise...... 13-25
Setting Up the Design .. 13-25
Setting Up the Simulation Environment.......... 13-27
Choosing Analyses ...... 13-27
Running the Simulation ................. 13-29
Viewing Simulation Results with Direct Plot.. 13-30
Lab 13-4 Comparing Measured Data to Simulation Data with a Schematic Model. 13-38
Setting Up the Design .. 13-38
Setting Up the Simulation Environment.......... 13-39
Setting the Path to the S-Parameter Data File.. 13-40
Choosing Analyses ...... 13-40
Simulating with Measured S-Parameter Data.. 13-42
Viewing Simulation Results with Direct Plot.. 13-42
Saving the Simulation Results ....... 13-44
Lab 13-5 Simulating with a Schematic Model.... 13-45
Setting the Schematic Model ......... 13-45
Choosing Analyses ...... 13-48
Simulating the ATF26100opt Component....... 13-49
Using the Direct Plot Tool to Compare Simulation Results................ 13-49
Lab 13-6 Tabulated S-Parameters in the Virtuoso Spectre RF Environment ........... 13-52
Reviewing the tab_sp_test Schematic ............. 13-52
Setting Up the First Simulation ..... 13-53
Simulating the tab_sp_test Schematic ............. 13-55
Plotting the Results ...... 13-55
Reviewing the tab_sp_test2 Design................. 13-58
Setting Up the Second Simulation . 13-60
Simulating the tab_sp_test2 Schematic ........... 13-62
Plotting the Results ...... 13-62
