Doherty Load Modulation Based on Non-Reciprocity
Paper i proceeding, 2021
This paper presents a new type of Doherty power amplifiers (DPA) based on non-reciprocal power combiners. We replace the conventional quarter-wave (λ/4) impedance inverter in a DPA by a non-reciprocal gyrator. As proof of concept, a DPA using a commercial circulator has been implemented. The
prototype PA exhibits a peak output power of 49.1 ± 0.1dBm and efficiency between 57-68% at 6 dB output back-off (OBO) across 2.08 -2.14 GHz. Linearized modulated measurements, using 10MHz LTE signal with 7.8 dB PAPR, show an average output power of 13 W, an average drain efficiency of 54 %, and an adjacent channel leakage ratio (ACLR) lower than -55 dBc.
prototype PA exhibits a peak output power of 49.1 ± 0.1dBm and efficiency between 57-68% at 6 dB output back-off (OBO) across 2.08 -2.14 GHz. Linearized modulated measurements, using 10MHz LTE signal with 7.8 dB PAPR, show an average output power of 13 W, an average drain efficiency of 54 %, and an adjacent channel leakage ratio (ACLR) lower than -55 dBc.
energy efficiency
power amplifiers
Doherty
Circulator
GaN-HEMT
Författare
Paul Saad
Ericsson AB
Han Zhou
Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik
Jose-Ramon Perez-Cisneros
Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik
Rui Hou
Ericsson AB
Christian Fager
Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik
Bo Berglund
Ericsson AB
2021 51st European Microwave Conference, EuMC 2021
938-941
978-2-87487-063-7 (ISBN)
2021 51th European Microwave Conference, EuMC 2021
London, United Kingdom,
London, United Kingdom,
Ämneskategorier
Telekommunikation
DOI
10.23919/EuMC50147.2022.9784157