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Projecte llegit

Títol: Herramienta de software para enlazar Python y AWR en el diseño de filtros acústicos

Estudiants que han llegit aquest projecte:

Director/a: MATEU MATEU, JORDI

Departament: TSC

Títol: Herramienta de software para enlazar Python y AWR en el diseño de filtros acústicos

Data inici oferta: 06-02-2024     Data finalització oferta: 06-10-2024


Estudis d'assignació del projecte:
    DG ENG AERO/SIS TEL
    DG ENG AERO/TELEMÀT
    DG ENG SISTE/TELEMÀT
Tipus: Individual
 
Lloc de realització: EETAC
 
Segon director/a (UPC): NAVARRO GESSÉ, EDGAR
 
Paraules clau:
Filtro acústico, Python, MATLAB, AWR
 
Descripció del contingut i pla d'activitats:
Aques projecte consisteix en el desenvolupament d'eines software per la connexió entre Python i AWR per l'automatització del disseny i simulació de filtres electroacustics considerant els seus efectes no lineals.
 
Overview (resum en anglès):
In recent decades, there has been a shift in the radio frequency communications sector, with an increase in the use of Acoustic-Wave technology due to the advantages these filters present over conventional ones. Primarily, the smaller size of these filters allows for more implementations, improving the device's characteristics. Acoustic wave filters are composed of piezoelectric transducers, which convert electrical signals into acoustic ones using their properties. Specifically, they can convert electrical signals into mechanical vibrations. If the propagating wave has a stationary wave pattern, this transducer is known as an acoustic resonator, and there are two types: Surface Acoustic Wave and Bulk Acoustic Wave.

Acoustic filters consist of acoustic resonators and have a significant impact in the aerospace world due to their small size. Moreover, they have the advantages of better response to arbitrary signals compared to other filters, the ability to work at high frequencies, and great stability in extreme conditions. Additionally, due to their size, more acoustic filters can be implemented in the satellite, and with the help of switches, the cut-off frequencies and bandwidths can be changed remotely in real-time, making an adjustable filter.

However, the main problem with acoustic resonators is that they are nonlinear elements, meaning they generate nonlinearities that negatively affect the signal. A nonlinearity is an alteration of the original signal, which can be harmonics or intermodulation distortions. The former occurs at the fundamental frequency or its multiples, and the latter is a combination of harmonics. Nonlinearities can interfere with the original signal and, in some cases, make its reception and decoding impossible, making it necessary to model nonlinearities when designing a filter to prevent or minimize their impact. Programs exist that model nonlinearities, but they consume a huge amount of resources, time, and require licences for use. Therefore, the main objective of this project is to create a script that can model the nonlinearities of an acoustic filter without consuming so many resources, time, and without the need for a licence.

To achieve this, the project focuses on the communication between the Advanced Wireless Research program and a script, which helps the program model nonlinearities efficiently and quickly. As a secondary objective, the script will be able to work with any order of the filter, increasing flexibility in designing an acoustic filter.

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