On the design of passive dispersive filters for analog signal processing applications

The paper presents the design of two dispersive filters (also called phasers) dedicated to Analog Signal Processing (ASP) applications. Possible ASP applications targeted for these filters are also proposed: analog pulse compression radar, analog chirp Fourier transformer and frequency discriminator...

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Veröffentlicht in:Facta universitatis. Series Electronics and energetics 2024-12, Vol.37 (4), p.639-654
Hauptverfasser: Meliani, Hanane, Avignon-Meseldzija, Emilie, Anastasov, Jelena, Milic, Dejan, Ferreira, Pietro
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container_issue 4
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container_title Facta universitatis. Series Electronics and energetics
container_volume 37
creator Meliani, Hanane
Avignon-Meseldzija, Emilie
Anastasov, Jelena
Milic, Dejan
Ferreira, Pietro
description The paper presents the design of two dispersive filters (also called phasers) dedicated to Analog Signal Processing (ASP) applications. Possible ASP applications targeted for these filters are also proposed: analog pulse compression radar, analog chirp Fourier transformer and frequency discriminator. In the past decades, dispersive filters for ASP have been implemented with Surface Acoustic Wave (SAW) filters, having a reduced bandwidth leading to a poor resolution in the applications. Consequently, designing these filters with a larger bandwidth is a significant progress and this is what is proposed in this work. The design of the two filters is described step-by-step: the mathematical method employed to optimize the parameters of the filters, the calculation of theoretical values of components and the selected real values of components of the shelves for the PCB. The two measured filters, composed of 2 passive cells, have negative slope and positive slope group delay characteristics: the first filter has a group delay downslope of -1 ns/GHz for the considered bandwidth [700MHz - 1.9GHz], and the second has a group delay upslope of 1.25ns/GHz for the considered bandwidth [500MHz-1.3GHz].
doi_str_mv 10.2298/FUEE2404639M
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subjects Engineering Sciences
Micro and nanotechnologies
Microelectronics
title On the design of passive dispersive filters for analog signal processing applications
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