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A Method for the Schmitt Trigger Propagation Delay Compensation in Asynchronous Sigma-Delta Modulator


Matić, Tomislav; Švedek, Tomislav; Herceg, Marijan
A Method for the Schmitt Trigger Propagation Delay Compensation in Asynchronous Sigma-Delta Modulator // IEEE transactions on circuits and systems. II, Express briefs, 59 (2012), 7; 404-408 doi:10.1109/TCSII.2012.2198981 (međunarodna recenzija, članak, znanstveni)


Naslov
A Method for the Schmitt Trigger Propagation Delay Compensation in Asynchronous Sigma-Delta Modulator

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

Izvornik
IEEE transactions on circuits and systems. II, Express briefs (1549-7747) 59 (2012), 7; 404-408

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Asynchronous Sigma-Delta Modulator; Schmitt trigger; hysteresis voltage; propagation delay

Sažetak
This paper provides the mathematical analysis of the Schmitt trigger propagation delay influence on the Asynchronous Sigma-Delta Modulator (ASDM) output signal frequency spectrum. Beside the propagation delay, the Schmitt trigger slew rate impact has also been presented. Based on the mathematical analysis, a method for the Schmitt trigger propagation delay compensation has been proposed. The method is implemented by introducing hysteresis level amplitude modulation. The first-order ASDM simulation and measurement models have been proposed for the propagation delay influence to the ASDM output signal frequency and for the compensation method verification. The measurement and simulation results for the proposed method confirm the ASDM output frequency spectrum improvement.

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

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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