TY - GEN
T1 - Performance Investigation of AMPR algorithm for Out-phased Power Amplifiers
AU - Mohammady, Somayeh
AU - Varahram, Pooria
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Designing Power Amplifiers has been the center of many researches around the world, and the main idea is always to reduce the power waste and improve the efficiency. Among many proposed designs, Out-phased PA provides outstanding power efficiency, however it suffers from a phenomena known as zero crossing. The zero crossing causes unwanted elements in frequency domain which leads to bandwidth leakage and so reducing the efficiency. Therefore analyzing the zero crossing and optimizing this phenomena is crucial. Recently a parameter is defined to measure the probability of this problem. This parameter is named Average to Minimum Power Ratio (AMPR). The probability of a modulated signal experiencing high AMPR is analyzed with Complementary Cumulative Distribution Function (CCDF). An approach is investigated to target the zero crossing effect and attempt to reduce the AMPR, and so the bandwidth expansion outcome. It is expected that by using the algorithm of AMPR reduction to Digital Signal Processing (DSP) segment before the SCS, the Error Vector magnitude or Mapping (EVM) is maintained.
AB - Designing Power Amplifiers has been the center of many researches around the world, and the main idea is always to reduce the power waste and improve the efficiency. Among many proposed designs, Out-phased PA provides outstanding power efficiency, however it suffers from a phenomena known as zero crossing. The zero crossing causes unwanted elements in frequency domain which leads to bandwidth leakage and so reducing the efficiency. Therefore analyzing the zero crossing and optimizing this phenomena is crucial. Recently a parameter is defined to measure the probability of this problem. This parameter is named Average to Minimum Power Ratio (AMPR). The probability of a modulated signal experiencing high AMPR is analyzed with Complementary Cumulative Distribution Function (CCDF). An approach is investigated to target the zero crossing effect and attempt to reduce the AMPR, and so the bandwidth expansion outcome. It is expected that by using the algorithm of AMPR reduction to Digital Signal Processing (DSP) segment before the SCS, the Error Vector magnitude or Mapping (EVM) is maintained.
KW - Average to Mean Power Ratio (AMPR)
KW - Error Vector magnitude or mapping (EVM)
KW - Long-Term Evolution (LTE)
KW - Out phasing
KW - Power Amplifier
KW - Signal Component Separator (SCS)
UR - https://www.scopus.com/pages/publications/85151512073
U2 - 10.1109/RFM56185.2022.10065210
DO - 10.1109/RFM56185.2022.10065210
M3 - Conference contribution
AN - SCOPUS:85151512073
T3 - Proceedings - 2022 RFM IEEE International RF and Microwave Conference, RFM 2022
BT - Proceedings - 2022 RFM IEEE International RF and Microwave Conference, RFM 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 9th RFM IEEE International RF and Microwave Conference, RFM 2022
Y2 - 19 December 2022 through 21 December 2022
ER -