Circuit Design and Analysis

Perform RF budget analysis; create and analyze RF circuits, filters, and matching networks in the frequency domain

Use theRF Budget Analyzerapp for designing RF transmitters and receivers using data sheet parameters. You can subsequently perform full circuit envelope or time domain simulation on your RF system using anrfsystemsystem object.

Design RF filters, matching networks, or circuits with arbitrary configurations using RF circuit elements. Alternatively, you can use RFCKT objects to construct series, parallel, cascade, hybrid, and inverse hybrid configurations. You can perform frequency domain analysis on these networks, calculate S-parameters, and group delay.

You can also use theMatching Network Designerapp to design, visualize, and compare 1-port narrowband matching networks.

Featured Examples

Design Two-Stage Low Noise Amplifier Using Microstrip Transmission Line Matching Network

Use the RF Toolbox™ microstrip transmission line element to design two-stage low noise amplifier (LNA) for wireless local area network (WLAN) with an input and the output matching network (MNW) to maximize the power delivered through a 50-ohm load and the system.

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Bandpass Filter Response

Compute the time-domain response of a simple bandpass filter. The eight steps involved in computing the time-domain response of a simple bandpass filter are,

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Design IF Butterworth Bandpass Filter

Design an Intermediate Frequency (IF) Butterworth bandpass filter with a center frequency of 400 MHz, bandwidth of 5 MHz, and Insertion Loss (IL) of 1dB [1].

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MOS Interconnect and Crosstalk

Build and simulate an RC tree circuit using the RF Toolbox™.

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MOS Interconnect and Crosstalk Using RFCKT Objects

Build and simulate an RC tree circuit using the RF Toolbox™.

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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)

使用RF工具箱来确定输入和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 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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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. This example requires the following product:

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Operations with RF Circuit Objects

Create and use RF Toolbox™ circuit objects. In this example, you create three circuit (rfckt) objects: two transmission lines and an amplifier.

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Bandpass Filter Response Using RFCKT Objects

Compute the time-domain response of a simple bandpass filter:

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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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