Designing Matching Networks in RF Systems
Matching networks in RF system enable maximum power transfer from the source to the load.
You can design a set of circuits that match the impedance of a source to the impedance of a
load at a specific center frequency using the
or the Matching Network Designer
app. You can also use the object and the app to visualize, and compare matching networks for
the one-port loads.
Using the object and the app, you can also:
Design two- and three-component lumped-element matching networks at desired frequencies and unloaded-Q factors.
Provide source and load impedance as a one-port Touchstone file, scalar impedance, RF circuit object, RF network parameter object, Antenna Toolbox™ object, or as an anonymous function.
Sort matching networks using constraints such as operating frequency range and power wave S-parameters.
Plot power wave S-parameters  of the matching network on a Smith™ chart and Cartesian plot.
Plot voltage standing wave ratio (VSWR) and impedance transformation plots.
Plot magnitude, phase, real, and imaginary parts of power wave S-parameters of the matching network.
Export selected networks as
circuitobjects or power wave S-parameters as
You can design matching networks in these network configurations:
You can design matching networks for RF systems using these workflows:
Design Matching Networks for Passive Multiport Network — This workflow shows how to design matching networks for 16-port passive networks at 39 GHz for 5G mm Wave systems. You design a matching network for each port that functions between two 1-port terminations.
Design Broadband Matching Networks for Antennas — This workflow shows how to design a broadband matching network between a resistive source and inductive load using optimization with direct search methods.
Designing Matching Networks for Low Noise Amplifiers — This workflow shows how to verify the design of input and output matching networks for a low noise amplifier (LNA) using a gain and noise figure plot.
Design Broadband Matching Networks for Amplifier — This workflow shows how to design broadband matching networks for a LNA.
Design of Quarter-Wave Transformer for Impedance Matching Applications (RF PCB Toolbox) — This workflow shows how to design a quarter-wave transformer for impedance-matching applications using
 Kurokawa, K. “Power Waves and the Scattering Matrix.” IEEE Transactions on Microwave Theory and Techniques 13, no. 2 (March 1965): 194–202. https://doi.org/10.1109/TMTT.1965.1125964.
 Ludwig, Reinhold, and Gene Bogdanov. RF Circuit Design: Theory and Applications. Upper Saddle River, NJ: Prentice-Hall, 2009.