Effects of fractional order integration on ASDM signals
Küçük Resim Yok
Tarih
2017
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer Berlin Heidelberg
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Pulse density modulation (PDM) can find applications in consumer electronics, power and switch control systems. PDM signals can be generated by asynchronous sigma delta modulator (ASDM) structures and improvement of ASDM performance provides significant contribution for practical applications. This study numerically investigates effects of fractional order integration (FOI) on the PDM signal, produced by ASDM. We implemented fractional order integratorin ASDM structure and present numerical analysis to discuss effects of fractional order integrator on PDM signals, obtained for bipolar digital signal transmission application. Theoretical analysis indicates that FOI provides finer pulse trains and thus improves representation of original signal. In simulations, we tested FOI for various fractional-order values. Signal to noise ratio and signal to noise and distortion ratio (SINAD) levels of demodulated signals are reported for sinusoidal and audio test signals. Simulation results demonstrate that FOI can improve SNR and SINAD performance of ASDMs. © 2016, Springer-Verlag Berlin Heidelberg.
Açıklama
Anahtar Kelimeler
Asynchronous sigma delta modulator, Fractional order integration, PDM, SNR
Kaynak
International Journal of Dynamics and Control
WoS Q Değeri
Scopus Q Değeri
Q2
Cilt
5
Sayı
1
