{"title":"nf -增益-线性折衷的放大器输入匹配","authors":"William Sear, Adam Der, T. Barton","doi":"10.1109/PAWR46754.2020.9035994","DOIUrl":null,"url":null,"abstract":"In this paper we investigate the effect of amplifier input matching on the noise figure, gain, and linearity design tradeoff, with the goal of developing a single-amplifier solution able to operate as either a PA or LNA. We evaluate the large-signal linearity performance of an amplifier with a noise-matched input compared to an identical amplifier with gain-matched input, and the effects on efficiency and noise figure. The prototype amplifier is designed at 3 GHz and realizes 42.86 dBm CW output power and 67% PAE at 3 dB gain compression. With a noise-matched input the amplifier realizes a 2 dB reduction in gain and 7.7 percentage point reduction in PAE compared to the gain-matched amplifier, but a 3 dB improvement in IMD3 at 33.5 dBm output power under a 1-MHz spaced two-tone signal excitation.","PeriodicalId":356047,"journal":{"name":"2020 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Amplifier Input Matching for NF-Gain-Linearity Compromise\",\"authors\":\"William Sear, Adam Der, T. Barton\",\"doi\":\"10.1109/PAWR46754.2020.9035994\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this paper we investigate the effect of amplifier input matching on the noise figure, gain, and linearity design tradeoff, with the goal of developing a single-amplifier solution able to operate as either a PA or LNA. We evaluate the large-signal linearity performance of an amplifier with a noise-matched input compared to an identical amplifier with gain-matched input, and the effects on efficiency and noise figure. The prototype amplifier is designed at 3 GHz and realizes 42.86 dBm CW output power and 67% PAE at 3 dB gain compression. With a noise-matched input the amplifier realizes a 2 dB reduction in gain and 7.7 percentage point reduction in PAE compared to the gain-matched amplifier, but a 3 dB improvement in IMD3 at 33.5 dBm output power under a 1-MHz spaced two-tone signal excitation.\",\"PeriodicalId\":356047,\"journal\":{\"name\":\"2020 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR)\",\"volume\":\"55 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2020-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2020 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/PAWR46754.2020.9035994\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PAWR46754.2020.9035994","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Amplifier Input Matching for NF-Gain-Linearity Compromise
In this paper we investigate the effect of amplifier input matching on the noise figure, gain, and linearity design tradeoff, with the goal of developing a single-amplifier solution able to operate as either a PA or LNA. We evaluate the large-signal linearity performance of an amplifier with a noise-matched input compared to an identical amplifier with gain-matched input, and the effects on efficiency and noise figure. The prototype amplifier is designed at 3 GHz and realizes 42.86 dBm CW output power and 67% PAE at 3 dB gain compression. With a noise-matched input the amplifier realizes a 2 dB reduction in gain and 7.7 percentage point reduction in PAE compared to the gain-matched amplifier, but a 3 dB improvement in IMD3 at 33.5 dBm output power under a 1-MHz spaced two-tone signal excitation.
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