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An Analog Multiplier Based on Asynchronous Sigma-Delta Pulse Amplitude Modulation


Matić, Tomislav; Švedek, Tomislav; Herceg, Marijan
An Analog Multiplier Based on Asynchronous Sigma-Delta Pulse Amplitude Modulation // Proceedings of TELSIKS 2011 / Milutinović, Bratislav (ur.).
Niš, Srbija: IEEE, 2011. str. 707-710 (poster, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)


Naslov
An Analog Multiplier Based on Asynchronous Sigma-Delta Pulse Amplitude Modulation

Autori
Matić, Tomislav ; Švedek, Tomislav ; Herceg, Marijan

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of TELSIKS 2011 / Milutinović, Bratislav - Niš, Srbija : IEEE, 2011, 707-710

ISBN
978-86-6125-044-6

Skup
TELSIKS 2011

Mjesto i datum
Niš, Srbija, 05-08.10.2011

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Analog multiplier; asynchronous sigma-delta modulation; pulse-amplitude modulation; duty-cycle

Sažetak
Asynchronous sigma-delta modulation (ASDM) has been proposed as a possible solution for the amplitude to duty-cycle conversion. The information conveyed by voltage level of the ASDM input signal is converted into the duty cycle of the ASDM output signal period. Applying pulse amplitude modulation (PAM) to ASDM output pulse stream, 2-input analog multiplier can be obtained. The mean value of the output pulse stream period corresponds to the product of the ASDM input and PAM input signals. This paper gives the mathematical analysis of the ASDM-PAM analog multiplier output signal spectrum for the DC and sinusoidal input signals. It has been shown that combination of ASDM and PAM modulation generates a product of the two input signals in the baseband and around multiples of the central frequency, which can be later on efficiently filtered out. The ASDM-PAM multiplier Simulink model has been used for confirmation of the mathematical analysis.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika, Računarstvo



POVEZANOST RADA


Projekt / tema
165-0361630-3049 - Napredni sustavi radijskog pristupa zatvorenom prostoru i interakcija s okolišem (Tomislav Švedek, )
165-0362027-1479 - Širokopojasni pristup i internetske usluge u ruralnim područjima (Drago Žagar, )
165-0362980-2002 - Postupci raspoređivanja u samoodrživim raspodijeljenim računalnim sustavima (Goran Martinović, )

Ustanove
Fakultet elektrotehnike, računarstva i informacijskih tehnologija Osijek