A 0.73 dB Multi-Gain Low Noise Amplifier Design with Fast Mode-Switching for 5G/4G Applications
In this paper, a sub-1dB Low Noise Amplifier (LNA) with several gain modes, including amplification and attenuation modes required for the fifth and fourth generations (5G/4G) of mobile network applications, is proposed. Its current consumption is adaptive for every gain mode and varies to lower cur...
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MDPI AG
2024-12-01
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| Online Access: | https://www.mdpi.com/1424-8220/24/24/8082 |
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| author | Kyung-Duk Choi SungHwan Paik Kyung-Jin Lee Dong-Min Kim Jun-Eun Park Sang-Sun Yoo Keum-Cheol Hwang Youngoo Yang Kang-Yoon Lee |
| author_facet | Kyung-Duk Choi SungHwan Paik Kyung-Jin Lee Dong-Min Kim Jun-Eun Park Sang-Sun Yoo Keum-Cheol Hwang Youngoo Yang Kang-Yoon Lee |
| author_sort | Kyung-Duk Choi |
| collection | DOAJ |
| description | In this paper, a sub-1dB Low Noise Amplifier (LNA) with several gain modes, including amplification and attenuation modes required for the fifth and fourth generations (5G/4G) of mobile network applications, is proposed. Its current consumption is adaptive for every gain mode and varies to lower currents for lower amplifications due to the importance of current consumption for mobile network applications. The proposed LNA features an innovative architecture with a three-core input structure supporting multi-gain modes, achieving high gain and ultra-low noise performance. Additionally, the design integrates a cascade switching mechanism to ensure fast transitions between the gain modes and maintain operational stability. A reconfigurable input structure is introduced to support multiple input stages, enabling the proposed LNA to be compatible with both 5G and 4G applications. The proposed design demonstrates the implementation of seven distinct gain modes with a maximum current consumption of 11.68 mA, achieving proper input matching in each gain mode. The LNA delivers a maximum gain of 20.4 dB with a noise figure of 0.73 dB. Moreover, the most stringent mode switching condition achieved, the ON time, is as short as 1.295 µs, and the gain mode transition speed is an impressive 0.874 µs, ensuring extremely fast mode transitions. The proposed LNA occupies an area of 700 µm × 500 µm and is fabricated using a 65 nm FD-SOI process. |
| format | Article |
| id | doaj-art-c7128e98be0b4981b9ed77dc48d4d1f4 |
| institution | Kabale University |
| issn | 1424-8220 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-c7128e98be0b4981b9ed77dc48d4d1f42024-12-27T14:52:55ZengMDPI AGSensors1424-82202024-12-012424808210.3390/s24248082A 0.73 dB Multi-Gain Low Noise Amplifier Design with Fast Mode-Switching for 5G/4G ApplicationsKyung-Duk Choi0SungHwan Paik1Kyung-Jin Lee2Dong-Min Kim3Jun-Eun Park4Sang-Sun Yoo5Keum-Cheol Hwang6Youngoo Yang7Kang-Yoon Lee8Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Republic of KoreaSKAIChips, Suwon 16571, Republic of KoreaSKAIChips, Suwon 16571, Republic of KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Republic of KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Republic of KoreaSKAIChips, Suwon 16571, Republic of KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Republic of KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Republic of KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Republic of KoreaIn this paper, a sub-1dB Low Noise Amplifier (LNA) with several gain modes, including amplification and attenuation modes required for the fifth and fourth generations (5G/4G) of mobile network applications, is proposed. Its current consumption is adaptive for every gain mode and varies to lower currents for lower amplifications due to the importance of current consumption for mobile network applications. The proposed LNA features an innovative architecture with a three-core input structure supporting multi-gain modes, achieving high gain and ultra-low noise performance. Additionally, the design integrates a cascade switching mechanism to ensure fast transitions between the gain modes and maintain operational stability. A reconfigurable input structure is introduced to support multiple input stages, enabling the proposed LNA to be compatible with both 5G and 4G applications. The proposed design demonstrates the implementation of seven distinct gain modes with a maximum current consumption of 11.68 mA, achieving proper input matching in each gain mode. The LNA delivers a maximum gain of 20.4 dB with a noise figure of 0.73 dB. Moreover, the most stringent mode switching condition achieved, the ON time, is as short as 1.295 µs, and the gain mode transition speed is an impressive 0.874 µs, ensuring extremely fast mode transitions. The proposed LNA occupies an area of 700 µm × 500 µm and is fabricated using a 65 nm FD-SOI process.https://www.mdpi.com/1424-8220/24/24/8082RF LNAgain mode switchingthree-core input structurecascaded switchingreconfigurable input structure |
| spellingShingle | Kyung-Duk Choi SungHwan Paik Kyung-Jin Lee Dong-Min Kim Jun-Eun Park Sang-Sun Yoo Keum-Cheol Hwang Youngoo Yang Kang-Yoon Lee A 0.73 dB Multi-Gain Low Noise Amplifier Design with Fast Mode-Switching for 5G/4G Applications Sensors RF LNA gain mode switching three-core input structure cascaded switching reconfigurable input structure |
| title | A 0.73 dB Multi-Gain Low Noise Amplifier Design with Fast Mode-Switching for 5G/4G Applications |
| title_full | A 0.73 dB Multi-Gain Low Noise Amplifier Design with Fast Mode-Switching for 5G/4G Applications |
| title_fullStr | A 0.73 dB Multi-Gain Low Noise Amplifier Design with Fast Mode-Switching for 5G/4G Applications |
| title_full_unstemmed | A 0.73 dB Multi-Gain Low Noise Amplifier Design with Fast Mode-Switching for 5G/4G Applications |
| title_short | A 0.73 dB Multi-Gain Low Noise Amplifier Design with Fast Mode-Switching for 5G/4G Applications |
| title_sort | 0 73 db multi gain low noise amplifier design with fast mode switching for 5g 4g applications |
| topic | RF LNA gain mode switching three-core input structure cascaded switching reconfigurable input structure |
| url | https://www.mdpi.com/1424-8220/24/24/8082 |
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