{"title":"扩展B级到J级连续模式的多倍频功率放大器设计方法","authors":"Y. M. A. Latha, K. Rawat","doi":"10.1109/IMaRC49196.2021.9714641","DOIUrl":null,"url":null,"abstract":"This paper presents the design of a multi-octave power amplifier (PA) using extended class B to class J continuous mode. In a multi-octave PA, an overlapping exists between the higher harmonic frequencies of the lower octave and the fundamental frequency of the higher octave. Therefore, a PA mode with overlapping between fundamental and second harmonic impedances is suitable to design a multioctave PA. An extended class B to class J continuous mode consists of overlapping between fundamental and second harmonic impedances. However, the design of a multi-octave PA is not straightforward. The impedance selected in each octave is important to design a highly-efficiency multi-octave PA. Therefore, this paper presents a methodology to choose the appropriate load in each octave to design extended class B to class J continuous mode PA. This paper also presents a valid range of design variables for the transistor’s reliable operation. The proof of concept PA has been designed using 10 W Wolfspeed GaN HEMT CGH40010F. The designed PA operates from 0.75 to 2.75 GHz. The corresponding fractional bandwidth is 114.2%. The measured drain efficiency, power added efficiency, and output power are 60-73.6%, 53-67.8%, and 39.3-42.3 dBm, respectively. The measured carrier to third-order intermodulation distortion is better than -15 dBc when tested with a 20 MHz spacing two-tone signal.","PeriodicalId":226787,"journal":{"name":"2021 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Methodology to Design Multi-Octave Power Amplifier Using Extended Class B to Class J Continuous Mode\",\"authors\":\"Y. M. A. Latha, K. Rawat\",\"doi\":\"10.1109/IMaRC49196.2021.9714641\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper presents the design of a multi-octave power amplifier (PA) using extended class B to class J continuous mode. In a multi-octave PA, an overlapping exists between the higher harmonic frequencies of the lower octave and the fundamental frequency of the higher octave. Therefore, a PA mode with overlapping between fundamental and second harmonic impedances is suitable to design a multioctave PA. An extended class B to class J continuous mode consists of overlapping between fundamental and second harmonic impedances. However, the design of a multi-octave PA is not straightforward. The impedance selected in each octave is important to design a highly-efficiency multi-octave PA. Therefore, this paper presents a methodology to choose the appropriate load in each octave to design extended class B to class J continuous mode PA. This paper also presents a valid range of design variables for the transistor’s reliable operation. The proof of concept PA has been designed using 10 W Wolfspeed GaN HEMT CGH40010F. The designed PA operates from 0.75 to 2.75 GHz. The corresponding fractional bandwidth is 114.2%. The measured drain efficiency, power added efficiency, and output power are 60-73.6%, 53-67.8%, and 39.3-42.3 dBm, respectively. The measured carrier to third-order intermodulation distortion is better than -15 dBc when tested with a 20 MHz spacing two-tone signal.\",\"PeriodicalId\":226787,\"journal\":{\"name\":\"2021 IEEE MTT-S International Microwave and RF Conference (IMARC)\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-12-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2021 IEEE MTT-S International Microwave and RF Conference (IMARC)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/IMaRC49196.2021.9714641\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 IEEE MTT-S International Microwave and RF Conference (IMARC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IMaRC49196.2021.9714641","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
摘要
本文介绍了一种采用扩展B级到J级连续模式的多倍频功率放大器的设计。在多倍频响中,低八度的高谐波频率与高八度的基频之间存在重叠。因此,基频和二次谐波阻抗重叠的PA模式适合设计多倍频的PA。扩展的B类到J类连续模式由基频和二次谐波阻抗之间的重叠组成。然而,多八度扩音的设计并不简单。每个倍频的阻抗选择对于设计高效的多倍频放大器至关重要。因此,本文提出了一种在每个八度内选择适当载荷的方法来设计扩展的B类到J类连续模态PA。本文还提出了晶体管可靠工作的有效设计变量范围。概念验证PA采用10 W Wolfspeed GaN HEMT CGH40010F设计。设计的PA工作在0.75到2.75 GHz之间。相应的分数带宽为114.2%。实测漏极效率为60 ~ 73.6%,功率增加效率为53 ~ 67.8%,输出功率为39.3 ~ 42.3 dBm。在间隔为20 MHz的双音信号下,测量到的载波到三阶互调失真优于-15 dBc。
Methodology to Design Multi-Octave Power Amplifier Using Extended Class B to Class J Continuous Mode
This paper presents the design of a multi-octave power amplifier (PA) using extended class B to class J continuous mode. In a multi-octave PA, an overlapping exists between the higher harmonic frequencies of the lower octave and the fundamental frequency of the higher octave. Therefore, a PA mode with overlapping between fundamental and second harmonic impedances is suitable to design a multioctave PA. An extended class B to class J continuous mode consists of overlapping between fundamental and second harmonic impedances. However, the design of a multi-octave PA is not straightforward. The impedance selected in each octave is important to design a highly-efficiency multi-octave PA. Therefore, this paper presents a methodology to choose the appropriate load in each octave to design extended class B to class J continuous mode PA. This paper also presents a valid range of design variables for the transistor’s reliable operation. The proof of concept PA has been designed using 10 W Wolfspeed GaN HEMT CGH40010F. The designed PA operates from 0.75 to 2.75 GHz. The corresponding fractional bandwidth is 114.2%. The measured drain efficiency, power added efficiency, and output power are 60-73.6%, 53-67.8%, and 39.3-42.3 dBm, respectively. The measured carrier to third-order intermodulation distortion is better than -15 dBc when tested with a 20 MHz spacing two-tone signal.