{"title":"A Differential SiGe HBT Doherty Power Amplifier for Automotive Radar at 79 GHz","authors":"Jan Schoepfel, H. Rücker, N. Pohl","doi":"10.1109/SiRF56960.2023.10046275","DOIUrl":null,"url":null,"abstract":"In this paper, a differential Doherty power amplifier for automotive applications in a 130nm SiGe BiCMOS technology, featuring ft/fmax of 470/650 GHz, is presented. The amplifier achieves a measured, peak power added efficiency of 11.6% with 17.0dBm saturated output power at a frequency of 79GHz. In the 6dB power back-off, the proposed amplifier offers a power added efficiency of 6.1%. For comparison, a reference Class-A amplifier has been designed that achieves an output power of 7.2dBm at the 6dB power back-off with a power added efficiency of 1.8%. Compared to other state-of-the-art Doherty approaches, the proposed architecture first time proves the traditional transmission line-based impedance inversion in the automotive frequency range from 76GHz to 81GHz.","PeriodicalId":354948,"journal":{"name":"2023 IEEE 23rd Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems","volume":"21 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2023 IEEE 23rd Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SiRF56960.2023.10046275","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
In this paper, a differential Doherty power amplifier for automotive applications in a 130nm SiGe BiCMOS technology, featuring ft/fmax of 470/650 GHz, is presented. The amplifier achieves a measured, peak power added efficiency of 11.6% with 17.0dBm saturated output power at a frequency of 79GHz. In the 6dB power back-off, the proposed amplifier offers a power added efficiency of 6.1%. For comparison, a reference Class-A amplifier has been designed that achieves an output power of 7.2dBm at the 6dB power back-off with a power added efficiency of 1.8%. Compared to other state-of-the-art Doherty approaches, the proposed architecture first time proves the traditional transmission line-based impedance inversion in the automotive frequency range from 76GHz to 81GHz.
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