SESSION 32 - Power Amplification and Signal Generation.pdf

1、ISSCC 2024SESSION 32Power Amplification and Signal Generation32.1 A 47GHz 4-way Doherty PA with 23.7dBm P1dB and 21.7%/13.1%PAE at 6/12dB back-off supporting 2000MHz 5G NR 64-QAM OFDM 2024 IEEE International Solid-State Circuits Conference1 of 42A 47GHz 4-way Doherty PA with 23.7dBm P1dBand 21.7%/13

2、.1%PAE at 6/12dB back-off supporting 2000MHz 5G NR 64-QAM OFDMXiaohan Zhang*,Hao Guo*,and Taiyun ChiRice University,Houston,TX*Equally credited authors(ECA)32.1 A 47GHz 4-way Doherty PA with 23.7dBm P1dB and 21.7%/13.1%PAE at 6/12dB back-off supporting 2000MHz 5G NR 64-QAM OFDM 2024 IEEE Internation

3、al Solid-State Circuits Conference2 of 42Outline Introduction Transformer-based 4-way Doherty network High-speed adaptive biasing Measurement results Conclusion32.1 A 47GHz 4-way Doherty PA with 23.7dBm P1dB and 21.7%/13.1%PAE at 6/12dB back-off supporting 2000MHz 5G NR 64-QAM OFDM 2024 IEEE Interna

4、tional Solid-State Circuits Conference3 of 42PA Back-off EfficiencyOFDM transient envelopeTimeAmplitude of envelopePAPR=12dB-25-20-15-10-50020406080%020406080%Normalized output power(dBm)PDF of OFDM,PAPR=12dBDEPEAK=78.5%Drain efficiency DE12dB=14DEPEAK Ideal class-B curveHigh PAPR for 5G NR(QAM,OFDM

5、,CA)PAEBACKOFFis a more relevant metric32.1 A 47GHz 4-way Doherty PA with 23.7dBm P1dB and 21.7%/13.1%PAE at 6/12dB back-off supporting 2000MHz 5G NR 64-QAM OFDM 2024 IEEE International Solid-State Circuits Conference4 of 422-way Doherty PARFin&RFout minimum baseband computation overheadV1,I1V2,I2/4

6、 Tline Z0V2=jZ0I1I2=jY0V10dBBack-off-6dBEfficiency peaksDrain efficiencyRLPAPPAMImpedance inverterVMVLI0ILIMIP0dBBack-off-6dBVMVLEfficiency peaks0dBIPBack-off-6dBI0=IL IP32.1 A 47GHz 4-way Doherty PA with 23.7dBm P1dB and 21.7%/13.1%PAE at 6/12dB back-off supporting 2000MHz 5G NR 64-QAM OFDM 2024 IE