Wentao Zhou;Zixian Ma;Bing Lan;Jun Chen;Zhaosheng Liu;Qun Jane Gu;Chunyi Song;Zhiwei Xu
{"title":"A Compact Multilayer-Stacked Guanella Transformer Based 50–680-MHz GaAs Power Amplifier","authors":"Wentao Zhou;Zixian Ma;Bing Lan;Jun Chen;Zhaosheng Liu;Qun Jane Gu;Chunyi Song;Zhiwei Xu","doi":"10.1109/LMWT.2024.3386883","DOIUrl":null,"url":null,"abstract":"This letter presents a sub-GHz ultra-wideband power amplifier (PA) in a 0.25-\n<inline-formula> <tex-math>${\\mu }\\text{m}$ </tex-math></inline-formula>\n GaAs pHEMT process. A compact Guanella-type transformer is designed with a space-saving multilayer-stacked topology to achieve single-ended to differential conversion and impedance transformation over a multioctave frequency range. The proposed PA with differential cascode topology andOFF-chip transformers can achieve a high saturated output power larger than 31 dBm across 50680 MHz (173% fractional bandwidth) in a small dimension. When with a 5-V supply, the fabricated PA microsystem delivers a 34.5-dBm peak output power and achieves a 24.0-dB maximum gain, a 52.7% peak power-added efficiency (PAE), as well as high linearity.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE microwave and wireless technology letters","FirstCategoryId":"1085","ListUrlMain":"https://ieeexplore.ieee.org/document/10508791/","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"0","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
This letter presents a sub-GHz ultra-wideband power amplifier (PA) in a 0.25-
${\mu }\text{m}$
GaAs pHEMT process. A compact Guanella-type transformer is designed with a space-saving multilayer-stacked topology to achieve single-ended to differential conversion and impedance transformation over a multioctave frequency range. The proposed PA with differential cascode topology andOFF-chip transformers can achieve a high saturated output power larger than 31 dBm across 50680 MHz (173% fractional bandwidth) in a small dimension. When with a 5-V supply, the fabricated PA microsystem delivers a 34.5-dBm peak output power and achieves a 24.0-dB maximum gain, a 52.7% peak power-added efficiency (PAE), as well as high linearity.