Matching Network Design

Design narrowband matching networks

Matching network designs a set of circuits that match the impedance of a given source to the impedance of a give load at a specified center frequency.

Apps

Matching Network Designer

Design, visualize, and compare matching networks for one-port load (Since R2021a)

Objects

matchingnetwork Create matching network for 1-port network and generate circuit object (Since R2019a)

Functions

`addEvaluationParameter`	Adds performance goal for sort, pass, or fail matching network design (Since R2019a)
`circuitDescriptions`	Tables describing each created matching network's topology and performance (Since R2019a)
`getEvaluationParameters`	Table of evaluation parameters currently used to rank and pass or fail matching network designs (Since R2019a)
`clearEvaluationParameter`	Delete one or more performance goals (Since R2019a)
`exportCircuits`	Select and export generated matching networks as circuit objects from an existing matching network object (Since R2019a)
`rfplot`	Plot input reflection coefficient and transducer gain of matching network (Since R2019a)
`smithplot`	Plot impedance transformation for selected matching network on smith chart (Since R2019a)
`sparameters`	Calculate S-parameters for RF data, network, circuit, and matching network objects

Topics

Designing Matching Networks in RF Systems
Design and analyze a matching network for an RF system.

Featured Examples

Design Matching Network Using Lumped Components from Modelithics Library

Design a matching network with real-world lumped components from Modelithics SELECT+ Library™.

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Impedance Matching of Small Monopole Antenna

Design a double tuning L-section matching network between a resistive source and capacitive load in the form of a small monopole by using the matchingnetwork object. The L-section consists of two inductors. The network achieves conjugate match and guarantees maximum power transfer at a single frequency.

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Designing Matching Networks for Low Noise Amplifiers

Verify the design of input and output matching networks for a Low Noise Amplifier (LNA) using gain and noise figure plot.

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Designing Matching Networks (Part 2: Single Stub Transmission Lines)

Use the RF Toolbox to determine the input and output matching networks that maximize power delivered to a 50-Ohm load and system. Designing input and output matching networks is an important part of amplifier design. This example first calculates the reflection factors for simultaneous conjugate match and then determines the placement of a shunt stub in each matching network at a specified frequency. Finally, the example cascades the matching networks with the amplifier and plots the results.

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Design Matching Networks for Passive Multiport Network

Design matching networks for 16-port passive network at 39 GHz for 5G mmWave systems. Matching networks are designed independently for each port, and each generated matching network is intended to function between two 1-port terminations.

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Design Broadband Matching Networks for Antennas

Design a broadband matching network between a resistive source and inductive load using optimization with direct search methods.

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Design Broadband Matching Networks for Amplifier

Design broadband matching networks for a low noise amplifier (LNA) with ideal and real-world lumped LC elements. The real-world lumped LC elements are obtained from the Modelithics SELECT+ Library™. The LNA is designed to the target gain and noise figure specifications over a specified bandwidth. A direct-search based approach is used to arrive at the optimum element values in the input and output matching networks.

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