Parameters for RF System Budget Analysis

The recommended way to setup a budget analysis is by using the Budget controller set up dialog box. To open this dialog box, double-click the Budget controller instance from the ADS schematic design. The Budget dialog box includes three tabs, enabling you to define the following aspects of the simulation:

Setup – Provides simulation setup and results/display setup features.
Measurements – Provides measurement descriptions, selection, save and recall features.
Display – Control the visibility of simulation parameters on the Schematic. For details, see Displaying Simulation Parameters on the Schematic.

Setting up a Budget Analysis

The Setup tab enables you to set up the simulation for linear or nonlinear analysis specify the frequency for noise simulation, and to specify how results are output. Names used in netlists and ADS Schematics appear under Parameter Name.

RF Budget Simulation Setup Parameters
Setup Dialog Name			Parameter Name	Description
Simulation - Set up linear/nonlinear simulation
	Nonlinear Analysis
		Enable nonlinear analysis	NonlinearAnalysis	Select the checkbox to enable nonlinear analysis. Leave the checkbox unselected to enable linear analysis.
		Harmonic order	NonlinearHarmonicOrder	Harmonic order used for P2D analysis of components that require S-parameter characterization
		Max. component input power (dBm)	CmpMaxPin	Maximum component input power
	Noise Simulation - Set up noise simulation
		Frequency span	NoiseFreqSpan	The frequency span used for noise simulations
		Frequency step	NoiseFreqStep	The frequency step used for noise simulations. In the dialog box, entering a value for Frequency step automatically calculates the value for Frequency points based on the value for Frequency span.
		Frequency points		Optionally, define the number of points and Frequency span to determine the Frequency step. In the dialog box, entering a value for Frequency points automatically calculates the value for Frequency step based on the value for Frequency span.
		Resolution bandwidth	NoiseResolutionBW	Resolution bandwidth used for noise simulations
Results - Set up the format and options for displaying results after analysis
	Components in		TableComponentFormat	Formats output table with measurements in columns or rows
	Angle unit		MeasurementAngleUnit	Determines the angle for output measurements in radians or degrees
	Frequency unit		MeasurementFrequencyUnit	Determines the frequency units for output measurements in Hz, kHz, MHz, GHz, THz, or PHz
	Auto format display with overwrite		AutoFormatDisplay	When selected, the output to the Data Display is formatted in tables and plots such that: - Components are ordered as in the system from first to last (source to term) - Measurements are ordered as listed in the Measurement tab - New data overwrites the existing .dds file for the current design
	Output results as comma separated values (CSV) to file		OutputCSVFile	Measurement data written as comma-separated values to .csv file
	Run command after analysis		RunCommand	When Output results as comma separated values (CSV) to file is selected, enabling this parameter runs a user-defined command after analysis. The command is entered in the System Command field, and typically is used for post processing the .csv file data.
	System command		SystemCommand	When Run command after analysis is selected, enter a command to run, such as running Excel on a PC platform. See Exporting and Post-Processing Results.

Selecting Measurements

The Measurement tab enables you to select the system cascade measurements that are evaluated per component in the schematic design. Names used in netlists and ADS Schematics appear under Parameter Name.

Note
Measurements also include a set of built-in system summary measurements, that evaluate overall system performance. These are single value system measurements and are not for each component. They are not selectable, and are always written to the CSV file and the ADS dataset.

Setup Dialog Name	Parameter Name	Description
Recall selected measurements from file		Populates the list of Selected Measurements from a file
Available Measurements		Select from list of available measurements to include in analysis. These are system cascade measurements for each component, or at each component input or output.
Selected Measurements	Measurement[n]	An ordered list determines the order in which measurements are written to the CSV file and Data Display. To change the order: Raise moves the selected measurement up Lower moves the selected measurement down Delete moves selected measurement(s) to the Available Measurements list
Description		Displays description of selected measurement
Save selected measurements to file		Saves the list of selected measurement to a text file

Parameters for RF System Budget Analysis

Setting up a Budget Analysis

RF Budget Simulation Setup Parameters

Selecting Measurements

Contents

Additional Resources