The major release 1.0.0 of scikit-rf is the result of 14 years of developement by around 80 contributors. In the recent months, the codebase and its API has been reorganized, cleaned and optimized, to provide a robust and well-tested RF/Microwave engineering package.

The version 1.0.0 does not include major changes with respect to the previous versions. This number 1.0.0 just aims to show for current and future users, that the scikit-rf package has now reached a significant level of maturity, a sufficient stable and performant state, ready for production use. It means that the developers consider scikit-rf to be ready for a widespread adoption.

Of course, scikit-rf development will continue, with new features, bug fixes, improved performances, in its subsequent versions.

Looking ahead to future release, we have releases a survey is intended for all the users of scikit-rf, in order for the developers to get some feedback, to determine what are the functionalities used the most and the less, the ones which could be improved, and to determine the directions for the future of the package. Thank you for your time in answering this survey. This should take 5 minutes and your feedback will be very useful.

https://docs.google.com/forms/d/e/1FAIpQLScTNfqZLcTeMV-8IkWOAKkDsd37EzOMhZmp5oI-zat9W99EUg/viewform

What's Changed

• Fix 10ports by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/1042
• Advanced Smith Chart examples with markers or background by @mhuser in https://github.com/scikit-rf/scikit-rf/pull/1041
• Run CI against nightly as well by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/1044
• Updated 8510 class with bugfixes and compound sweep support by @jjoonathan in https://github.com/scikit-rf/scikit-rf/pull/1040
• Fix linter by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/1046
• CI speedup by @jhillairet in https://github.com/scikit-rf/scikit-rf/pull/1045
• Vector Fitting: Docstrings by @Vinc0110 in https://github.com/scikit-rf/scikit-rf/pull/1036
• Remove Network2 by @jhillairet in https://github.com/scikit-rf/scikit-rf/pull/1031
• Move apps to a seprate repo by @jhillairet in https://github.com/scikit-rf/scikit-rf/pull/1055

Full Changelog: https://github.com/scikit-rf/scikit-rf/compare/v.0.32.0...v1.0.0

This version 0.32.0 of scikit-rf includes new features, optimizations, fixes and important effort to improve the code quality.

New Features

• Touchstone File Version 2 with parameters different from S are now supported. Finalize ts2 support by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/1009
• Support of N-port mismatch junction (arbitrary real reference impedance) in Circuit by @mhuser in https://github.com/scikit-rf/scikit-rf/pull/1028
• A fully automatic version of VectorFitting.vector_fit() (No need to provide the number of poles, which can sometimes be very challenging), called VectorFitting.auto_fit() by @Vinc0110 in https://github.com/scikit-rf/scikit-rf/pull/1033

Optimization

• Circuit optimization (C function) by @jhillairet in https://github.com/scikit-rf/scikit-rf/pull/1013

Deprecation

• Network2 is now deprecated. It will be removed in future versions. by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/1034

Fixes, Code Quality and Continuous Integration

• Fix pre-commit config by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/1018
• Dev/GitHub actions bump versions by @jhillairet in https://github.com/scikit-rf/scikit-rf/pull/1016
• Remove white-space from directory name by @mchristen-astranis in https://github.com/scikit-rf/scikit-rf/pull/1019
• Enable more Ruff rules and clean codebase to pass ruff test by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/1020
• Fix CI Tests by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/1021
• Ruff rules for numpy by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/1023
• Enable B check in ruff by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/1024
• Update ruff to detect np.random.random calls by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/1029
• Remove some unused code by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/1030

New Contributors

• @mchristen-astranis made their first contribution in https://github.com/scikit-rf/scikit-rf/pull/1019

Full Changelog: https://github.com/scikit-rf/scikit-rf/compare/v0.31.0...v.0.32.0

This new version of scikit-rf includes the support of Touchstone V2 format, a new gain circle features and many improvements and bug fixes.

New Features

• Start touchstone 2 support by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/993
• Add gain circle by @keikawa in https://github.com/scikit-rf/scikit-rf/pull/998

Improvements

• Make SOLT class inherit run method from TwelveTermModel to allow arbitrary thrus by @floschl in https://github.com/scikit-rf/scikit-rf/pull/990
• Vector Fitting: Removing deprecated zeros attribute by @Vinc0110 in https://github.com/scikit-rf/scikit-rf/pull/996
• Allow printing of Networks with empty frequency range by @eendebakpt in https://github.com/scikit-rf/scikit-rf/pull/991
• Vector Fitting: Support for large number of parameters by @Vinc0110 in https://github.com/scikit-rf/scikit-rf/pull/1004

Continuous Integration

• use old version of labler by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/985
• Re enable pr labeler by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/986
• Fixing CI tests by @Vinc0110 in https://github.com/scikit-rf/scikit-rf/pull/1006

Bug Fixes

• Set default f_unit to Hz by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/1008

New Contributors

• @floschl made their first contribution in https://github.com/scikit-rf/scikit-rf/pull/990

Full Changelog: https://github.com/scikit-rf/scikit-rf/compare/v0.30.0...v0.31.0

This new release includes some new features and bugfixes:

Improvements

• Add support for python3.12 by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/966
• Force PNA to use expected format for SNP data by @mjpelmear in https://github.com/scikit-rf/scikit-rf/pull/976
• Define circuit name at initialization by @rragona in https://github.com/scikit-rf/scikit-rf/pull/979
• Deal with deficient Z or Y matrices in y2z() and z2y() by @Vinc0110 in https://github.com/scikit-rf/scikit-rf/pull/978

Bug fixes

• Remove html_theme_path setting from docs config to fix search & other JavaScript functions by @miek in https://github.com/scikit-rf/scikit-rf/pull/970
• Fix de-embedding when 2 networks are provided by @atavella in https://github.com/scikit-rf/scikit-rf/pull/971
• NanoVNA fixes by @miek in https://github.com/scikit-rf/scikit-rf/pull/968

New Contributors

• @miek made their first contribution in https://github.com/scikit-rf/scikit-rf/pull/970
• @atavella made their first contribution in https://github.com/scikit-rf/scikit-rf/pull/971
• @rragona made their first contribution in https://github.com/scikit-rf/scikit-rf/pull/979

Full Changelog: https://github.com/scikit-rf/scikit-rf/compare/v0.29.1...v0.30.0

This minor version contains bug and documentation fixes.

The detailed list of changed is:

What's Changed

• Fix network_2_dataframe for more than 10 ports by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/955
• Check python 3.12 compatibility by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/956
• Fix plotting notebook for Matplotlib 3.8 by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/959
• Fix VI documentation issue by @cafeclimber in https://github.com/scikit-rf/scikit-rf/pull/954
• Add timeout argument to VNA constructor by @cafeclimber in https://github.com/scikit-rf/scikit-rf/pull/958
• Avoid running constructor multiple times when import skrf by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/957
• Use correct x-axis for time_mag and time_db plots by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/961
• Fix #951 by @Vinc0110 in https://github.com/scikit-rf/scikit-rf/pull/962

Full Changelog: https://github.com/scikit-rf/scikit-rf/compare/v0.29.0...v0.29.1

The version 0.29.0 of scikit-rf includes two major changes in the API, three new features and many important improvements and bug fixes. Please see the description below for additional information:

Major Changes

• SI units for frequency and time are now the new default by @jhillairet in https://github.com/scikit-rf/scikit-rf/pull/935
• New VNA implementation by @cafeclimber in https://github.com/scikit-rf/scikit-rf/pull/744

New Features

• Supports the creation of capacitors and inductors with Q factor by @Asachoo in https://github.com/scikit-rf/scikit-rf/pull/933
• Stability circles by @keikawa in https://github.com/scikit-rf/scikit-rf/pull/943
• Add TUG multiline TRL and a method to compute switch terms indirectly by @ZiadHatab in https://github.com/scikit-rf/scikit-rf/pull/929

Improvements

• New implementation of the automatically generated docstrings for plotting methods by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/848

Bug Fixes

• Fix true-false-comparison errors. by @bchpmn in https://github.com/scikit-rf/scikit-rf/pull/937
• fix switch term termination function by @ZiadHatab in https://github.com/scikit-rf/scikit-rf/pull/938
• export unscaled frequency to dataframe by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/945

Documentation

• Update Calibration.ipynb by @mjpelmear in https://github.com/scikit-rf/scikit-rf/pull/930
• Updating documentations by @jhillairet in https://github.com/scikit-rf/scikit-rf/pull/936
• Add classifiers for pypi by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/944

New Contributors

• @mjpelmear made their first contribution in https://github.com/scikit-rf/scikit-rf/pull/930
• @ZiadHatab made their first contribution in https://github.com/scikit-rf/scikit-rf/pull/929
• @bchpmn made their first contribution in https://github.com/scikit-rf/scikit-rf/pull/937

Full Changelog: https://github.com/scikit-rf/scikit-rf/compare/v0.28.0...v0.29.0

This new release of scikit-rf fixes some bugs and brings improvements:

New Features and Important changes

• Add noise data to write_touchstone by @ericwrice in https://github.com/scikit-rf/scikit-rf/pull/906
• Remove deprecated setter methods on Frequency by @eendebakpt in https://github.com/scikit-rf/scikit-rf/pull/878
• Allow to pass a callable fucnction as window argument by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/925

Bug Fixes

• Fix transposed circuit voltages by @Ttl in https://github.com/scikit-rf/scikit-rf/pull/918
• Fixed the bug that touchstone files containing noise could not be cropped. by @Asachoo in https://github.com/scikit-rf/scikit-rf/pull/913
• Numpy1.25 by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/922
• Fixed eq issue by @Hadimius in https://github.com/scikit-rf/scikit-rf/pull/915
• Update calibration.py by @jmcelroy01 in https://github.com/scikit-rf/scikit-rf/pull/926

Documentation

• Formatting API documents by @keikawa in https://github.com/scikit-rf/scikit-rf/pull/912

New Contributors

• @Asachoo made their first contribution in https://github.com/scikit-rf/scikit-rf/pull/913
• @Hadimius made their first contribution in https://github.com/scikit-rf/scikit-rf/pull/915
• @jmcelroy01 made their first contribution in https://github.com/scikit-rf/scikit-rf/pull/926

Full Changelog: https://github.com/scikit-rf/scikit-rf/compare/v0.27.1...v0.28.0

What's Changed

Important Changes in Media

• Refactor media to simplify line creation by @mhuser in https://github.com/scikit-rf/scikit-rf/pull/727

The Media class has been refactored to simplify the API and avoid confusions related to the impedances. The z0 property now returns by default the Characteristic Impedance of the media (also available from z0_characteristic) if the property z0_override is defined, z0 returns z0_override instead of the Characteristic Impedance.

The embed argument and the parameters Z0 (capital) have been deprecated. If the property z0_port is defined, all lines will be renormalized from z0 to z0_port, like in a measurement with z0_port. Please refer to the Media tutorial more additional information and a clear explanation of the different between port and characteristic impedances.

New Features

• Add gain properties by @keikawa in https://github.com/scikit-rf/scikit-rf/pull/908

New properties have been added to a Network: maximum stable gain (max_stable_gain), Maximum available power gain (max_gain) and Mason's unilateral gain (unilateral_gain)

Improvements

• Vectorize drop_non_monotonic_increasing by @eendebakpt in https://github.com/scikit-rf/scikit-rf/pull/882
• Improve performance network.copy by @eendebakpt in https://github.com/scikit-rf/scikit-rf/pull/875

Bug Fixes

• Make Network.copy also copy params dict by @cafeclimber in https://github.com/scikit-rf/scikit-rf/pull/887
• Fix incorrect z0 handling in SeriesImpedance and ShuntAdmittance by @Ttl in https://github.com/scikit-rf/scikit-rf/pull/885
• Handle non-zero length thru in TRL by @Ttl in https://github.com/scikit-rf/scikit-rf/pull/896
• Resolve singularities for matched thru and line in determine_reflect by @eendebakpt in https://github.com/scikit-rf/scikit-rf/pull/870
• Timescale by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/900
• Allow NISTMultilineTRL to work with non-exact floats by @eendebakpt in https://github.com/scikit-rf/scikit-rf/pull/895
• Handle division by zero in stability by @Ttl in https://github.com/scikit-rf/scikit-rf/pull/910

Code Quality/CI

• Create dependabot.yml by @jhillairet in https://github.com/scikit-rf/scikit-rf/pull/898
• [pre-commit] ruff by @jhillairet in https://github.com/scikit-rf/scikit-rf/pull/892
• disable upper limits by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/893

Documentation

• Prepare media tutorial for characteristic impedance implementation change by @mhuser in https://github.com/scikit-rf/scikit-rf/pull/888
• Fix doc links from Circuit tutorial to Circuit convenience methods by @caryan in https://github.com/scikit-rf/scikit-rf/pull/897
• just fixing a small typo I spotted :-) by @Patarimi in https://github.com/scikit-rf/scikit-rf/pull/876
• Fix docstring for Frequency.unit by @eendebakpt in https://github.com/scikit-rf/scikit-rf/pull/879
• URL updated. by @wollmich in https://github.com/scikit-rf/scikit-rf/pull/881
• Fix installation documentation by @jhillairet in https://github.com/scikit-rf/scikit-rf/pull/907

New Contributors

• @Patarimi made their first contribution in https://github.com/scikit-rf/scikit-rf/pull/876
• @wollmich made their first contribution in https://github.com/scikit-rf/scikit-rf/pull/881
• @caryan made their first contribution in https://github.com/scikit-rf/scikit-rf/pull/897

Full Changelog: https://github.com/scikit-rf/scikit-rf/compare/v.0.26.0...v0.27.0

New Features

• Add shunt_resistor by @jhillairet in https://github.com/scikit-rf/scikit-rf/pull/853
• Create variables to modify nudge_eig thresholds by @jhillairet in https://github.com/scikit-rf/scikit-rf/pull/859

Improvements

• Do not generate subnetworks all the time but provide them dynamically by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/810
• improve performance of Coaxial.from_attenuation by @eendebakpt in https://github.com/scikit-rf/scikit-rf/pull/871

Bug Fix

• Fix CITI parser by @jhillairet in https://github.com/scikit-rf/scikit-rf/pull/854
• Fix division by zero warnings in determine_line by @eendebakpt in https://github.com/scikit-rf/scikit-rf/pull/868
• Fix reading/writing HFSS Touchstone files using the 'power' S-param definition by @jhillairet in https://github.com/scikit-rf/scikit-rf/pull/869

Community, Code Quality and Continuous Integration

• Adding issue templates by @jhillairet in https://github.com/scikit-rf/scikit-rf/pull/862
• [pre-commit] pre-commit configuration: blank lines and trailing spaces by @jhillairet in https://github.com/scikit-rf/scikit-rf/pull/863 and https://github.com/scikit-rf/scikit-rf/pull/873
• [pre-commit] trailing spaces and end lines by @jhillairet in https://github.com/scikit-rf/scikit-rf/pull/867

Documentation

• Remove duplicate files in documentation by @jhillairet in https://github.com/scikit-rf/scikit-rf/pull/861

Full Changelog: https://github.com/scikit-rf/scikit-rf/compare/v0.25.0...v.0.26.0

The release 0.25.0 of scikit-rf includes several new features, with for example:

• Calibrating multi-port (N>2) networks is now possible thanks to @Ttl. See Multi-port calibration documentation.
• Making copy of a Network is now 4 times faster than before thanks to @eendebakpt
• Adds an option for custom pole spacing in Vector Fitting thanks to @Vinc0110

The complete list of changes is found below. We welcome two new contributors @eendebakpt and @ericwrice for their work!

New Features

• Multi-port calibration by @Ttl in https://github.com/scikit-rf/scikit-rf/pull/818
• Vector Fitting: Custom pole initialization by @Vinc0110 in https://github.com/scikit-rf/scikit-rf/pull/845

Improvements

• Improve performance of Network.copy by @eendebakpt in https://github.com/scikit-rf/scikit-rf/pull/828
• Add name argument to two_port_reflect by @eendebakpt in https://github.com/scikit-rf/scikit-rf/pull/829
• Overlap dut and dummy networks in deembedding by @ericwrice in https://github.com/scikit-rf/scikit-rf/pull/834
• Adding parameter draw_labels to plot_smith(). by @Vinc0110 in https://github.com/scikit-rf/scikit-rf/pull/826

Documentation

• Improve error message in NIST TRL calibration by @eendebakpt in https://github.com/scikit-rf/scikit-rf/pull/827
• Fix inductor units in media docstrings by @ericwrice in https://github.com/scikit-rf/scikit-rf/pull/835

Bug Fixes

• Fix get_sparameter_names order for two-port by @Ttl in https://github.com/scikit-rf/scikit-rf/pull/822
• Fix NetworkSet division by @cafeclimber in https://github.com/scikit-rf/scikit-rf/pull/843
• Fix shade_bands overwriting y_range (#742) by @ericwrice in https://github.com/scikit-rf/scikit-rf/pull/838
• Use fft_window when specified and not window by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/802

Code Quality

• Add test for input networks of OnePort calibration by @eendebakpt in https://github.com/scikit-rf/scikit-rf/pull/844
• Misc fixes by @eendebakpt in https://github.com/scikit-rf/scikit-rf/pull/808
• Remove unneeded print by @FranzForstmayr in https://github.com/scikit-rf/scikit-rf/pull/801
• Fix Python 3.7 flake8 by @Ttl in https://github.com/scikit-rf/scikit-rf/pull/820
• Dynamically load version from init.py by @Vinc0110 in https://github.com/scikit-rf/scikit-rf/pull/837
• Small cleanup in calibration methods by @eendebakpt in https://github.com/scikit-rf/scikit-rf/pull/836
• Vector Fitting: Tests by @Vinc0110 in https://github.com/scikit-rf/scikit-rf/pull/850
• Increasing rtol for sweep type tests by @Vinc0110 in https://github.com/scikit-rf/scikit-rf/pull/847

New Contributors

• @eendebakpt made their first contribution in https://github.com/scikit-rf/scikit-rf/pull/808
• @ericwrice made their first contribution in https://github.com/scikit-rf/scikit-rf/pull/835

Full Changelog: https://github.com/scikit-rf/scikit-rf/compare/v0.24.1...v0.25.0