Doherty power amplifier with simplified out‐of‐phase power splitter for 5G applications
Abstract This letter presents the architecture and characterization of a Doherty power amplifier (DPA) with a simplified out‐of‐phase power splitter (SOPPS) for fifth‐generation (5G) small‐cell applications. The proposed SOPPS consists of two passive components, which is conducive to chip miniaturiz...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-07-01
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| Series: | Electronics Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/ell2.12875 |
| Summary: | Abstract This letter presents the architecture and characterization of a Doherty power amplifier (DPA) with a simplified out‐of‐phase power splitter (SOPPS) for fifth‐generation (5G) small‐cell applications. The proposed SOPPS consists of two passive components, which is conducive to chip miniaturization. Additionally, a stable DPA architecture is employed to avoid oscillation caused by out‐of‐phase ports imbalance. A DPA based on gallium arsenide (GaAs) heterojunction bipolar transistor (HBT) technology is fabricated, achieving high gain of 32 dB over 2.5 to 2.7 GHz. Using a continuous‐wave signal, the DPA exhibits a saturation output power of 36 dBm, with a peak power‐added efficiency (PAE) of 42.3% and 37% at saturation and 6‐dB power‐back‐off, respectively, across the operating band. |
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| ISSN: | 0013-5194 1350-911X |