RF Architectural Models

Models of RF transmitters and receivers to explore different architectural choices

Use RF Blockset™ Circuit Envelope library blocks to simulate RF transmitter and receiver systems using different architectures such as direct conversion, superheterodyne, low-IF, Hartley, Weaver, to name a few. With these models, you can anticipate specific architectural aspects and explore which architecture is best for the implementation of your RF system.

You can also use RF Blockset Analog Devices® support software to simulate and verify agile RF transceiver designs. MathWorks and Analog Devices co-developed the models and validated the values using lab measurements.

Topics

Models

AD9361 Models

AD9361 transmitter and receiver models.

AD9371 Models

AD9371 transmitter, receiver, observer, and sniffer.

Testbenches

AD9361 Testbenches

AD9361 transmitter, receiver, and QPSK test benches.

AD9371 Testbenches

AD9371 transmitter, receiver, observer, sniffer, and transmitter-observer testbenches.

Featured Examples

Frequency Response of an RF Transmit/Receive Duplex Filter

Frequency Response of an RF Transmit/Receive Duplex Filter

Use blocks from the RF Blockset™ Circuit Envelope library to simulate a transmit/receive duplex filter and calculate frequency response curves from a broadband white-noise input. Blocks from the DSP System Toolbox™ libraries generate the input signal, process the output signal, and display the results.

Open Script
Carrier to Interference Performance of Weaver Receiver

Carrier to Interference Performance of Weaver Receiver

A classic superheterodyne architecture filters images prior to frequency conversion. In contrast, image-reject receivers remove the images at the output without filtering but are sensitive to phase offsets.

Open Script
Demodulate Two-Tone RF Signal Using IQ Demodulator

Demodulate Two-Tone RF Signal Using IQ Demodulator

Use the IQ Demodulator block to demodulate a two-tone RF signal to DC level. Observe the impairments in the demodulated output signal such as images due to gain imbalance, intermodulation distortion, and output third-order intercept (OIP3).

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Modulate Two-Tone DC Signal Using IQ Modulator

Modulate Two-Tone DC Signal Using IQ Modulator

Use the IQ Modulator block to Modulate a two-tone DC signal to RF level. Observe the impairments in the modulated output signal such as images due to gain imbalance, intermodulation distortion, and output third-order intercept (OIP3).

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Top-Down Design of an RF Receiver

Top-Down Design of an RF Receiver

Designs an RF receiver for a ZigBee®-like application using a top-down methodology. It verifies the BER of an impairment-free design, then analyzes BER performance after the addition of impairment models. The example uses the RF Budget Analyzer App to rank the elements contributing to the noise and nonlinearity budget.

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Architectural Design of a Low IF Receiver System

Architectural Design of a Low IF Receiver System

Use the RF Blockset™ Circuit Envelope library to simulate the performance of a Low IF architecture with the following RF impairments: Component noise

Open Script

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