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SPECTRASYS Examples

Path: Examples\SPECTRASYS\

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Description

Usage

ADS Templates\

Basic template ADS.wsx

Provides a basic cascaded lineup between the source and output port.

System Analysis

 

Feed Forward Amplifier ADS.wsx

Dual loop feed forward amplifier

System Analysis
Tuning Variables

 

Image Rejection Mixer ADS.wsx

Illustrates the concepts of an image reject mixer with three applied signals.

System Analysis

 

Receiver ADS.wsx

Provides a basic receiver cascaded lineup between the source and output port.

System Analysis

 

RX Blocking ADS.wsx

Performs a receiver blocking simulation to determine the required receiver phase noise to meet a given carrier-to-noise ratio.

Equations
System Analysis
Tuning Variables

 

Tx Rx Chain ADS.wsx

An entire transmit and receive chain that includes the path loss between the transmitter and receiver.

System Analysis
Tuning Variables

 

X Band Up Converter ADS.wsx

Illustrates an X band up converter showing the LO impurity appearing at the up converter output.

System Analysis

AGC\

Open Loop AGC.wsx

Setup of an open loop Automatic Gain Control (AGC) loop based on input power and an IF attenuation table.

Equations
LiveReport
MultiSource
Sweep
System Analysis

Amplifiers\

10th Order Amp w 4 Tone Input.wsx

Shows the capability of higher order amplifiers. This amplifier is represented by a 10th order polynomial and driven by 4 input signals

Equations
System Analysis
Tuning Variables

 

Amplifier Compression.wsx

How to perform a simple RF power sweep to determine the 1 dB compression point of a RF amplifier.

Equations
Sweep
System Analysis
Tuning Variable

 

Dual Hybrid Matrix Amp.wsx

Demonstrates the use of a dual hybrid matrix amplifier.

Equations
System Analysis
Tuning Variables

 

Feed Forward Amplifier.wsx

Dual loop feed forward amplifier. For additional documentation see Feed Forward Amplifier.

System Analysis
Tuning Variables

 

Freq Dependent Params.wsx

Demonstrates how to create and use parameters dependent on another variable like frequency.

System Analysis
Equations

 

Harmonic Suppressed Amp.wsx

Illustrates a parallel amplifier configuration that cancels both 2nd and 3rd order intermod and harmonic products.

Equations
System Analysis

 

Hybrid Linear Nonlinear Amp.wsx

Illustration of the hybrid S-parameter nonlinear amplifier model.

Linear Analysis
System Analysis

 

Manual S Parameters.wsx

Shows how to create an S-parameter file with noise data to be used in the simulator.

Linear Analysis
S-Parameter
System Analysis

 

Quad Hybrid Matrix Amp.wsx

Demonstrates the use of a quad hybrid matrix amplifier. For additional documentation see Quad Hybrid Matrix Amp.

Equations
System Analysis
Tuning Variables

 

Simple Variable Gain Amp.wsx

Illustration of how to create the control voltage gain and noise figure curves for a variable gain amplifier.

Equations
System Analysis
Sweep
Tuning Variable

Analog Digital\

Simple System w ADC.wsx

A simple system followed by an impedance matched analog-to-digital converter.

System Analysis
Tuning Variable

AppCAD\

AppCAD 1.9Ghz CDMA Handset Receiver.wsx

Illustration of how a dumbed down SPECTRASYS simulation will give the same answers as the AppCAD NoiseCalc example '1.9 GHz Handset Receiver'.

System Analysis

Coherency\

Reference Clock.wsx

Shows how coherency and the source reference clock works in SPECTRASYS

Coherency
MultiSource
System Analysis

Equations\

Spectrum Mask.wsx

Creates limit lines from an array of numbers used for a spectrum mask.

Equations
System Analysis

 

User Defined Warnings.wsx

Uses equations to create a user defined warning and error messages.

Equations
System Analysis
Tuning Variable

Freq Mult Div\

Multiplier Divider SSB Decomposition.wsx

Shows how an unwanted single sideband signal at the input of a digital divider (or frequency multiplier or divider) is decomposed into its AM and PM components

MultiSource
System Analysis
Tuning Variables

Group Delay\

Group Delay Verification.wsx

Shows how group delay measurements in the linear analysis engine are the same as SPECTRASYS.

Equations
Linear Analysis
System Analysis

 

RXSystem Group Delay.wsx

Shows how to get SPECTRASYS group delay measurements.

Equations
Linear Analysis
System Analysis

IC Design\

Simple Receiver IC.wsx

Shows voltage based measurements and models used in IC design.

System Analysis

Intermods\

Basic IP2 and IP3 Measurements.wsx

How to perform an IP2 and IP3 measurement on the same circuit at the same time.

System Analysis

 

Intermod Basics.wsx

How to perform both in-band and out-of-band intermod analysis.

System Analysis

Log Detector\

Simple Log Detector.wsx

How to set up a sweep and examine the performance of a log detector.

Equations
Sweep
System Analysis

Mixers\

Basic Mixer Compression.wsx

How to perform a simple RF power sweep to determine the 1 dB compression point of basic mixer.

Equations
Sweep
System Analysis
Tuning Variable

 

Image Rejection Mixer.wsx

Illustrates the concepts of an image reject mixer with three applied signals.

System Analysis

 

Simple Table Mixer.wsx

Demonstrates table mixer configuration and operation.

System Analysis
Tuning Variables

Monte Carlo\

TX Power Variation.wsx

Uses a Monte Carlo analysis to determine transmitter power output variation

Monte Carlo Analysis
MultiSource
System Analysis
Tuning Variables

Noise\

Fiter Amp Noise Figure.wsx

Illustrates how the source impedance of the filter affects the cascaded noise figure of the filter and LNA pair.

Linear Analysis
System Analysis
Tuning Variables

 

Image Noise.wsx

Illustrates how to determine the effect of the image noise on receiver sensitivity.

Equations
System Analysis
Tuning Variables

 

NPR measurement.wsx

How to perform a noise power ratio (NPR) measurement.

System Analysis

 

True Cascaded Noise Figure.wsx

Illustration of how traditional cascaded noise figures will give incorrect answer unless all paths are considered.

System Analysis

 

TX Noise in RX Band.wsx

Demonstrates the use of a duplexer for a common antenna used by transmit and receive channels. Examines the parameters and performance. For additional documentation see TX Noise in RX Band.

Linear Analysis
System Analysis

Optimization\

Base Station RX Front End.wsx

Determines the budgeting tradeoffs between a base station receiver front end and its individual receivers.

Equations
Optimization
System Analysis
Tuning Variables
Yield Analysis

 

Intermod w Optimization.wsx

Shows how to perform an optimization along a path in SPECTRASYS.

Equations
Optimization
System Analysis
Tuning Variables

Paths\

Forced Path Frequency.wsx

Learn how to create a path that changes frequency at a user specified node name.

System Analysis

 

Switched Filter Bank.wsx

Illustrates that both the path frequency and path definition track through the state of a switch

Equations
LiveReport
MultiSource
System Analysis

Phase\

Spectrum Phase.wsx

Displays the phase of individual spectral components of an internal node.

System Analysis
Tuning Variables

Phase Noise\

RX Blocking.wsx

Performs a receiver blocking simulation to determine the required receiver phase noise to meet a given carrier-to-noise ratio.

Equations
LiveReport
System Analysis
Tuning Variables

Receivers\

Input P1dB vs Freq.wsx

Shows the system input 1 dB compression point versus swept frequency of a system.

Sweep
System Analysis
Tuning Variable

 

RX SFDR.wsx

Shows verification of the Spurious Free Dynamic Range (SFDR) measurement used by SPECTRASYS with a manual calculation of the same.

System Analysis
Tuning Variable

 

System Input P1dB.wsx

Shows  the system input 1 dB Compression point of a system.

System Analysis
Tuning Variables

Statistics\

RX Statistics.wsx

Shows histograms of a Monte Carlo analysis on a simple receiver for cascaded gain, noise figure, and input intercept points.

Monte Carlo Analysis System Analysis

Sub Circuits\

Simple Transceiver.wsx

A simple transceiver.

System Analysis
User Models
User Symbols

 

Subcircuit Basics.wsx

Illustrates how multiple levels of subcircuits work in Genesys and SPECTRASYS

System Analysis

Sweeps\

Noise Figure vs Freq.wsx

How to sweep the RF input frequency and look at the performance changes of a the cascaded noise figure.

Equations
Sweep
System Analysis
Tuning Variable

 

RX Spur Sweep.wsx

Shows a sweep of the RF input frequency while tuning the LO to keep the IF output frequency constant.

Equations
Sweep
System Analysis
Tuning Variable

Transmitters\

Diversity TX and Hybrid Amp.wsx

A diversity transmitter with a hybrid amplifier. For additional documentation see Diversity TX and Hybrid Amp.

Equations
System Analysis
Tuning Variables

 

X Band Up Converter.wsx

Illustrates an X band up converter showing the LO impurity appearing at the up converter output.

System Analysis

TX and RX\

Tx Rx Chain.wsx

An entire transmit and receive chain that includes the path loss between the transmitter and receiver. For additional documentation see TX and RX Chain.

System Analysis
Tuning Variable

VSWR\

5 GHz VSWR Detector.wsx

A 3 sector 5.8 GHz receiver that can be used as a TX power or VSWR tester.

Equations
System Analysis

 

Wideband Carrier VSWR.wsx

How to determine the VSWR input of a cascade for a wide carrier.

Equations
System Analysis

WhatIF\

Dual Band Frequency Plan.wsx

Illustrates the IF performance of a dual band CDMA receiver.

WhatIF Frequency Planner


SPECTRASYS Examples with Additional Documentation