I am unable to correctly set up the baseband operations in Simulink.

I have just started using Simulink and MATLAB; despite watching tutorials and successfully setting up my RF chain, I cannot perform the baseband operations in a way that suits my RF system, so I am unable to run my simulations. Is there anyone who can help me with this?

Answer 1

[Abhas]

Hi @Bogac,

You can follow the below guide on setting up baseband operations in Simulink for your RF chain:

1. Idealized Baseband: Simplest model, assumes perfect impedance match. Great for fast, discrete-time simulations of RF networks without mismatch effects. You can refer to the below documentation link to know more about the same: https://www.mathworks.com/help/simrf/gs/using-simrf-software-for-the-first-time.html
2. Equivalent Baseband: Supports discrete-time simulation of cascaded single-carrier RF chains with mismatches, importing network parameters (e.g. S‑parameters). Refer to the below documentation for better understanding: https://www.mathworks.com/help/simrf/equivalent-baseband-simulation.html
3. Circuit Envelope: Best for multicarrier/high-fidelity cases with arbitrary topologies. It is slightly more complex to model.

I hope this helps!

[Bogac]

Thank you for the information you provided. I have one more question. I am working on a sample RF system model in MATLAB (Model RF Systems with Antenna Arrays Using RF Blockset Antenna Block). In this model, for example, I only changed the CF variable from 35 GHz to 2.4 GHz, and my constellation diagram became distorted. Besides the CF variable, which other parameters should I modify? Based on what criteria should I assign their values? Thank you in advance for your responses.