User manual MATLAB RF TOOLBOX RELEASE NOTES

[. . . ] Other product or brand names may be trademarks or registered trademarks of their respective holders. Patents The MathWorks products are protected by one or more U. S. Please see www. mathworks. com/patents for more information. Contents Summary by Version . Version 2. 7 (R2010a) RF Toolbox Software . Version 2. 6 (R2009b) RF Toolbox Software . [. . . ] · The stepresp method calculates the response of an rfmodel. rational object to a step signal. You can use this function to perform time-domain reflectometry (TDR) and time-domain transmission (TDT) analysis. Demo Added The Modeling a High-Speed Backplane (Part 3: 4-Port S-Parameters to Differential TDR and TDT) demo shows how to perform time-domain 4 Version 2. 7 (R2010a) RF ToolboxTM Software reflectometry (TDR) and time-domain transmission (TDT) analysis on network data. 5 RF ToolboxTM Release Notes Version 2. 6 (R2009b) RF Toolbox Software This table summarizes what's new in V2. 6 (R2009b): New Features and Changes Yes Details below Version Compatibility Considerations No Fixed Bugs and Known Problems Bug Reports Includes fixes Related Documentation at Web Site Printable Release Notes: PDF Current product documentation New features and changes introduced in this version are: · "New Function for Testing Passivity of S-Parameters" on page 6 · "Expanded Port-Ordering Schemes for S-Parameter Conversion Functions" on page 6 · "Support for Calculation of Power-Wave Gain for Transfer Functions" on page 6 New Function for Testing Passivity of S-Parameters The ispassive function checks the passivity of N-port S-parameter matrices. Expanded Port-Ordering Schemes for S-Parameter Conversion Functions The functions s2scc, s2scd, s2sdc, s2sdd, s2smm, smm2s now support a third commonly-used port-ordering. For more information on using this feature, see the corresponding function reference page. Support for Calculation of Power-Wave Gain for Transfer Functions The s2tf function can now calculate the power-wave gain of 2-port S-parameters. Calculation in terms of voltage is still the default option. 6 Version 2. 5 (R2009a) RF ToolboxTM Software Version 2. 5 (R2009a) RF Toolbox Software This table summarizes what's new in V2. 5 (R2009a): New Features and Changes Yes Version Compatibility Considerations Yes--Details labeled as Compatibility Considerations, below. Fixed Bugs and Known Problems Bug Reports Includes Fixes Related Documentation at Web Site Printable Release Notes: PDF Current product documentation New features and changes introduced in this version are: · "New Functions for Converting 4N-Port S-Parameter Matrices" on page 7 · "Enhanced Dielectric Loss Model in Three Transmission Line Objects" on page 7 · "Demos Added" on page 8 New Functions for Converting 4N-Port S-Parameter Matrices There are two new functions for converting between 4N-port single-ended S-parameter matrices and 2N-port mixed-mode S-parameter matrices: · The s2smm function lets you convert 4N-port single-ended S-parameters to 2N-port mixed-mode S-parameters. You can view the 2N-port output data to see interactions, such as crosstalk, that are not apparent in the single-ended data. This lets you easily select the ports of interest for further analysis. · The smm2s function lets you convert 2N-port mixed-mode S-parameters to 4N-port single-ended S-parameters. Enhanced Dielectric Loss Model in Three Transmission Line Objects The following objects now provide a more realistic model for dielectric loss: 7 RF ToolboxTM Release Notes · rfckt. coaxial · rfckt. twowire · rfckt. parallelplate To specify dielectric loss, you use a new property, LossTangent. This property replaces the SigmaDiel parameter. Compatibility Considerations Your existing objects with a nonzero value for the SigmaDiel parameter no longer model dielectric loss. Instead, the objects issue a warning message and use the default value of zero for the LossTangent property when you use the analyze method. Demos Added Two new demos show how to design broadband impedance matching networks for RF components: · Designing Broadband Matching Networks (Part 1: Antenna) shows how to design a matching network for an antenna. · Designing Broadband Matching Networks (Part 2: Amplifier) shows how to design a matching network for an amplifier. 8 Version 2. 4 (R2008b) RF ToolboxTM Software Version 2. 4 (R2008b) RF Toolbox Software This table summarizes what's new in V2. 4 (R2008b): New Features and Changes Yes Version Compatibility Considerations No Fixed Bugs and Known Problems Bug Reports Includes Fixes Related Documentation at Web Site Printable Release Notes: PDF Current product documentation New features and changes introduced in this version are: · "cascadesparams Function now supports N-port S-parameters" on page 9 · "Improvements to the plotyy Method" on page 9 cascadesparams Function now supports N-port S-parameters You can now use the cascadesparams function to cascade the S-parameters of an arbitrary number of N-port devices to form a network. The function lets you specify how to connect the ports of each N-port device to the ports of the subsequent N-port device in the cascade. For more information about the function, see the cascadesparams reference page. Improvements to the plotyy Method The plotyy method now uses a more intuitive approach when determining how to plot the specified parameters if you do not specify the plot format. The original three parts of the demo are now parts 2, 3, and 4. The following demos replace the "Designing Impedance Matching Networks" and "Placing Circles on a Smith Chart" demos, respectively, and show how to use the new circle method: · Designing Matching Networks (Part 1: Networks with an LNA and Lumped Elements) uses the available gain design technique to design a low-noise amplifier for a wireless communication system. · Designing Matching Networks (Part 2: Single Stub Transmission Lines) shows how to design input and output matching networks for an amplifier. 13 RF ToolboxTM Release Notes Version 2. 1 (R2007a) RF Toolbox Software This table summarizes what's new in V2. 1 (R2007a): New Features and Changes Yes Details below Version Compatibility Considerations No Fixed Bugs and Known Problems Bug Reports Related Documentation at Web Site No New features and changes introduced in this version are · "Agilent P2D and S2D System-Level Verification Model Support Added" on page 14 · "Mixer Spur Analysis Added" on page 15 · "timeresp Method Added" on page 15 · "Plotting Methods Added" on page 15 · "gamma2z Function Added" on page 16 · "Tab Completion Added" on page 16 · "Data Tips Added" on page 16 · "Demos Added and Updated" on page 16 Agilent P2D and S2D System-Level Verification Model Support Added The rfckt. amplifier and rfckt. mixer objects now let you import system-level verification models of amplifiers and mixers, respectively, using data from Agilent® P2D and S2D files. Use P2D files to specify the following data for multiple operating conditions, such as temperature and bias values: · Small-signal network parameters · Power-dependent network parameters 14 Version 2. 1 (R2007a) RF ToolboxTM Software · Noise data · Intermodulation tables Use S2D files to specify the following data for multiple operating conditions: · Small-signal network parameters · Gain compression (1 dB) · Third-order intercept point (IP3) · Power-dependent S21 parameters · Noise data · Intermodulation tables Use the following methods to work with operating condition data after you import a P2D or S2D file into an RF object: · setop -- Use this method to set operating condition values or to list all available values. · getop -- Use this method to display the selected operating condition values. Mixer Spur Analysis Added You can import an intermodulation table into an rfckt. mixer object. The object's plot method has a new option for plotting mixer spur data. timeresp Method Added Use the new timeresp method of the rfmodel. rational object to compute the time response of an rfmodel object to a specified input signal. Use this method rather than computing impulse response with the impulse method and then convolving that response with the input signal because the timeresp method generally gives a more accurate output signal for a given input signal. Plotting Methods Added Four new plotting methods provide additional plotting options: 15 RF ToolboxTM Release Notes · Use the plotyy method of the rfckt class to create a plot that contains RF circuit object data on both the left and right Y-axes. · Use the loglog method of the rfckt class to plot RF circuit object data on a log-log scale. · Use the semilogx method of the rfckt class to plot RF circuit object data using a logarithmic scale for the X-axis. [. . . ] You can also generate these plots from circuit objects you create using the toolbox. See "RF Circuit Objects" and "RF Data Objects" for information. Data Format Support The toolbox supports the Touchstone SnP, YnP, ZnP, and HnP data file formats. It also introduces the MathWorks AMP format for amplifier data. For more information about this format, see "AMP File Format". RF Analysis GUI RF Tool is an RF analysis GUI that provides a visual interface for creating and analyzing RF (radio frequency) components and networks. [. . . ]