IIIE 20352
INSTITUTO DE INVESTIGACIONES EN INGENIERIA ELECTRICA "ALFREDO DESAGES"
Unidad Ejecutora - UE
artículos
Título:
Table-based PWM modulatior for all-digital RF transmitters
Autor/es:
PABLO S. MANDOLESI; JUAN IGANCIO MORALES; EDUARDO E. PAOLINI; FERNANDO CHIERCHIE
Revista:
International Journal of Circuit Theory and Applications
Editorial:
wiley
Referencias:
Año: 2018 vol. 47 p. 320 - 332
ISSN:
1097-007X
Resumen:
In this paper we present a PWM modulator for an all-digital PWM transmitter based on switching amplification. In this approach, each symbol is represented by a sequence of pre-computed PWM pulse widths stored in a table that results in reduced Error Vector Magnitude (EVM). A high resolution pulse-former is then used to build the bipolar RF signal. Simulations and comparisons to other approaches reported in the literature under different oversampling ratios and finite time resolutions are presented.
