User manual MATLAB RF TOOLBOX RELEASE NOTES

[. . . ] Please see www. mathworks. com/patents for more information. Contents Summary by Version . 1 4 6 7 9 10 12 14 18 20 21 23 25 26 28 iii iv Contents RF ToolboxTM Release Notes Summary by Version This table provides quick access to what's new in each version. Version (Release) Latest Version V2. 7 (R2010a) New Features and Changes Yes Details Version Compatibility Considerations No Fixed Bugs and Known Problems Bug Reports Related Documentation at Web Site Printable Release Notes: PDF Current product documentation V2. 6 (R2009b) V2. 5 (R2009a) V2. 4 (R2008b) V2. 3 (R2008a) V2. 2 (R2007b) V2. 1 (R2007a) V2. 0 (R2006b) V1. 3 (R2006a) V1. 2 (R14SP3) V1. 1 (R14SP2) Yes Details Yes Details Yes Details Yes Details Yes Details Yes Details Yes Details Yes Details Yes Details Yes Details No Yes Summary No No No No No No No No Bug Reports Includes fixes Bug Reports Includes fixes Bug Reports Includes fixes Bug Reports Includes fixes Bug Reports Bug Reports Bug Reports Bug Reports at Web site Bug Reports at Web site Bug Reports at Web site No No No No No No No No No No 1 RF ToolboxTM Release Notes Version (Release) V1. 0. 1 (R14+) V1. 0 (R14) New Features and Changes No Yes Details Version Compatibility Considerations No No Fixed Bugs and Known Problems Fixed bugs No bug fixes Related Documentation at Web Site No No Using Release Notes Use release notes when upgrading to a newer version to learn about: · New features · Changes · Potential impact on your existing files and practices Review the release notes for other MathWorksTM products required for this product (for example, MATLAB® or Simulink®). Determine if enhancements, bugs, or compatibility considerations in other products impact you. [. . . ] 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 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. · Use the semilogy method of the rfckt class to plot RF circuit object data using a logarithmic scale for the Y-axis. gamma2z Function Added Use the new gamma2z function to compute input impedance from a reflection coefficient. Tab Completion Added Tab completion is now available in the MATLAB command window for all functions and methods. For more information on tab completion, see "Completing Statements in the Command Window -- Tab Completion" in the MATLAB documentation. Data Tips Added Data tips are now available for any RF plot. For more information on data tips, see "Data Cursor -- Displaying Data Values Interactively" in the MATLAB documentation. Demos Added and Updated Visualizing Mixer Spurs shows how to use the toolbox to perform mixer spur analysis using data from an intermodulation table and then plot the output power spectrum of the desired signal and the undesired spurs. Modeling a High-Speed Backplane (Part 1: Measured 4-Port S-Parameters to a Rational Function Model) now uses the timeresp method to compute the time-domain response of a system characterized by measured data. 16 Version 2. 1 (R2007a) RF ToolboxTM Software Modeling a High-Speed Backplane (Part 2: Rational Function Model to Simulink Model) now includes code that you can use to generate a Simulink model for any rfmodel. rational object. 17 RF ToolboxTM Release Notes Version 2. 0 (R2006b) RF Toolbox Software This table summarizes what's new in V2. 0 (R2006b): New Features and Changes Yes Details below Version Compatibility Considerations No Fixed Bugs and Known Problems Bug Reports Related Documentation at Web Site No Version 2. 0 (R2006b) lets you create a rational function model from measured network parameters. This type of model is useful to signal integrity engineers, whose goal is to reliably connect high-speed semiconductor devices with, for example, multi-Gbit/s serial data streams across backplanes and printed circuit boards. New features and changes introduced in this version are described in this section. S-Parameter Conversion Function Added Use the s2tf function to convert 2-port scattering parameters into a transfer function that represents the normalized voltage gain of a 2-port network. rfmodel Class Added Use objects from the rfmodel class to represent components and networks with mathematical equations. The rfmodel. rational object stores a rational function model of a component or network. rationalfit Function Added Use the rationalfit function to fit a rational function to passive data that represents an RF component or network and then store the result in an rfmodel. rational object. freqresp and impulse Functions Added Use the freqresp method of the rfmodel class to compute the frequency response of an rfmodel object. 18 Version 2. 0 (R2006b) RF ToolboxTM Software Use the impulse method of the rfmodel class to compute the impulse response of an rfmodel object. Support for Exporting Verilog-A Models Added Use the writeva method of the rfmodel class to export a description of an RF component or network for use in a time-domain circuit simulator. Demos Added "Modeling a High-Speed Backplane (Part 1: Measured 4-Port S-Parameters to a Rational Function Model)" shows how to use the toolbox to model a differential high-speed backplane using rational functions. [. . . ] · Analyze circuits interactively. RF Circuits The toolbox provides classes that let you model these circuit objects and networks. · Passive networks · Amplifiers and mixers 26 Version 1. 0 (R14) RF ToolboxTM Software · Transmission lines: coaxial, coplanar waveguide, general transmission, microstrip, parallel-plate, and two-wire · SeriesRLC and shuntRLC circuits · LC ladder filters: LC bandpass pi, LC bandpass tee, LC bandstop pi, LC bandstop tee, LC highpass pi, LC highpass tee, LC lowpass pi, and LC lowpass tee · Networks: cascade, hybrid, parallel, and series You can also model general circuit elements from data files. Data Visualization The toolbox lets you plot the network parameters of the circuits you create. You can generate an X-Y plane plot, polar plane plot, or Smith Chart of one or more selected network parameters directly from your data. You can also generate these plots from circuit objects you create using the toolbox. [. . . ]