Design of RF BAW-based ΣΔ Modulators

Author

Belfort, Diomadson ; Catunda, Sebastian Y. C. ; Aboushady, Hassan

Author_Institution

Autom. & Comput. Eng. Dept., Fed. Univ. of Rio Grande do Norte, Natal, France

fYear

2014

fDate

25-28 Feb. 2014

Firstpage

1

Lastpage

4

Abstract

Analysis of the Bulk Acoustic Wave (BAW) resonator modeled as a two-port device is presented for applications in Sigma Delta Modulator (ΣΔM) based Analog-to-Digital Converter (ADC). The design of BAW-based Continuous Time (CT) ΣΔM starting from a Discrete Time (DT) model, which is designed from scratch, is presented and explained in details. In order to convert a DT ΣΔM into CT BAW-based ΣΔM, Finite Impulse Response (FIR) filters are used in the feedback path increasing the degrees of freedom. We discuss and validate the calculation of the FIR filter coefficients by using a design example of BAW-based ΣΔMs.

Keywords

FIR filters; acoustic resonator filters; bulk acoustic wave devices; continuous time filters; discrete time filters; radiofrequency filters; sigma-delta modulation; two-port networks; ΣΔM; ADC; DT model; FIR filter; RF BAW-based ΣΔ modulator; analog-to-digital converter; bulk acoustic wave resonator; degrees of freedom; discrete time model; finite impulse response filter; sigma delta modulator; two-port device; Band-pass filters; Bulk acoustic wave devices; Capacitors; Mathematical model; Modulation; Radio frequency; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (LASCAS), 2014 IEEE 5th Latin American Symposium on

Conference_Location

Santiago

Print_ISBN

978-1-4799-2506-3

Type

conf

DOI

10.1109/LASCAS.2014.6820294

Filename

6820294