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.

Objects

matchingnetwork Create matching network for 1-port network and generate circuit object

Functions

`addEvaluationParameter`	Adds performance goal for sort, pass, or fail matching network design
`circuitDescriptions`	Tables describing each created matching network's topology and performance
`getEvaluationParameters`	Table of evaluation parameters currently used to rank and pass or fail matching network designs
`clearEvaluationParameter`	Delete one or more performance goals
`exportCircuits`	Select and export generated matching networks as circuit objects from an existing matching network object
`rfplot`	Plot cumulative RF budget result versus cascade input frequency
`smithplot`	Plot measurement data on Smith chart
`sparameters`	S-parameter object

Featured Examples

Impedance Matching of a Non-resonant(Small) Monopole

Design a double tuning L-section matching network between a resistive source and capacitive load in the form of a small monopole. The L-section consists of two inductors. The network achieves conjugate match and guarantees maximum power transfer at a single frequency. This example requires the following product:

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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) by plotting its gain and noise.

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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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Designing 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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Designing Broadband Matching Networks (Part 2: Amplifier)

Design broadband matching networks for a low noise amplifier (LNA). In an RF receiver front end, the LNA is commonly found immediately after the antenna or after the first bandpass filter that follows the antenna. Its position in the receiver chain ensures that it deals with weak signals that have significant noise content. As a result the LNA has to not only provide amplification to such signals but also minimize its own noise footprint on the amplified signal. In this example you will design an LNA to achieve the target gain and noise figure specifications over a specified bandwidth, using lumped LC elements. A direct-search based approach is used to arrive at the optimum element values in the input and output matching network.

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