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This table summarizes what's new in V2.5 (R2009a):
| New Features and Changes | Version Compatibility Considerations | Fixed Bugs and Known Problems | Related Documentation at Web Site |
|---|---|---|---|
| Yes | Yes—Details labeled as Compatibility Considerations, below. See also Summary. | Bug
Reports Includes Fixes | Printable Release Notes: PDF |
New features and changes introduced in this version are:
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.
The following objects now provide a more realistic model for dielectric loss:
To specify dielectric loss, you use a new property, LossTangent. This property replaces the SigmaDiel parameter.
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.
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.
![]() | Version 2.6 (R2009b) RF Toolbox Software | Version 2.4 (R2008b) RF Toolbox Software | ![]() |

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