Low-OSR asynchronous Sigma-Delta modulation high-order buck converter for efficient wideband switching amplification. - Albert Garcia-Tormo; Eduard Alarcón; Alberto Poveda; Francesc Guinjoan (ISCAS, 2008)

Design-oriented Characterisation of Adaptive Asynchronous SigmaDelta Modulation Switching Power Amplifiers for Bandlimited Signals. - Albert Garcia-Tormo; Alberto Poveda; Eduard Alarcón; Francesc Guinjoan (ISCAS, 2009)

An enhanced switching policy for buck-derived multi-level switching power amplifiers. - Albert Garcia-Tormo; Alberto Poveda; Eduard Alarcón; Henk Jan Bergveld; Berry Buter; Ravi Karadi (ISCAS, 2010)

Continuous-time CMOS adaptive asynchronous ΣΔ modulator approximating low-ƒs low-inband-error on-chip wideband power amplifier. - Eduard Alarcón; Daniel Fernández; Albert Garcia-Tormo; Jordi Madrenas; Alberto Poveda (ISCAS, 2011)

A grounded-output 5-switch bipolar buck-boost converter topology for switching power amplifiers. - Albert Garcia-Tormo; Alberto Poveda; Eduard Alarcón; Francesc Guinjoan (ISCAS, 2011)

Fundamental Modulation Limits for Minimum Switching Frequency Inband-Error-Free High-Efficiency Power Amplifiers. - Albert Garcia-Tormo; Alberto Poveda; Eduard Alarcón; Francisco Juan Guinjoan Gispert (IEEE Trans. Circuits Syst. I Regul. Pap., 2011)

A Study on Multi-Level PWM and Asynchronous ΣΔ Modulations for Enhanced Bandlimited Signal Tracking in Switching Power Amplifiers. - Albert Garcia-Tormo; Alberto Poveda; Eduard Alarcón; Francesc Guinjoan (IEEE Trans. Circuits Syst. I Regul. Pap., 2013)