28-GHz CMOS Up-Conversion Mixer With Improved LO Second-Harmonic Leakage Signal Suppression for 5G Applications
A CMOS up-conversion mixer with an intermediate frequency (IF) amplifier and local oscillator (LO) buffer is presented for mobile 28-GHz-band 5G dual-conversion transceivers. A balun transformer with improved common-mode rejection ratio characteristics is proposed to improve the LO second-harmonic s...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9782895/ |
| _version_ | 1817975955388366848 |
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| author | Suyeon Lee Yangji Jeon Dae-Young Yoon Ockgoo Lee Donggu Im Ilku Nam |
| author_facet | Suyeon Lee Yangji Jeon Dae-Young Yoon Ockgoo Lee Donggu Im Ilku Nam |
| author_sort | Suyeon Lee |
| collection | DOAJ |
| description | A CMOS up-conversion mixer with an intermediate frequency (IF) amplifier and local oscillator (LO) buffer is presented for mobile 28-GHz-band 5G dual-conversion transceivers. A balun transformer with improved common-mode rejection ratio characteristics is proposed to improve the LO second-harmonic signal suppression, which is a problem in the up-conversion mixer of the 5G dual-conversion architecture. By applying the proposed balun transformer instead of the conventional one, a common-mode rejection ratio greater than 10 dB can be achieved at the frequencies of the LO second-harmonic leakage signal. An up-conversion mixer with an IF amplifier and LO buffer incorporating the proposed balun transformer was implemented in a 65-nm CMOS process, and it draws a current of 31.4 mA from a 1-V supply voltage. It provides a gain larger than 22.2 dB, a noise figure less than 4.1 dB, a third-order output intercept point higher than 4.6 dBm, and an LO second-harmonic leakage signal lower than −55.5 dBm in frequencies ranging from 26.5 GHz to 29.5 GHz. It also exhibits a suppression improvement of the LO second-harmonic leakage signal of approximately 14 dB with respect to an up-conversion mixer with IF amplifier and LO buffer using the conventional balun transformer. The proposed up-mixer with IF amplifier and LO buffer is the first one reported that addresses the 2LO leakage issue and the first demonstration of 2LO leakage signal suppression improvement for a 5G mmWave dual-conversion single-quadrature transmitter. |
| first_indexed | 2024-04-13T21:56:08Z |
| format | Article |
| id | doaj.art-16c4bc9a871b4cdfa54d1c4b8a94565e |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-04-13T21:56:08Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-16c4bc9a871b4cdfa54d1c4b8a94565e2022-12-22T02:28:15ZengIEEEIEEE Access2169-35362022-01-0110570035701110.1109/ACCESS.2022.3178440978289528-GHz CMOS Up-Conversion Mixer With Improved LO Second-Harmonic Leakage Signal Suppression for 5G ApplicationsSuyeon Lee0Yangji Jeon1Dae-Young Yoon2Ockgoo Lee3https://orcid.org/0000-0001-8244-5115Donggu Im4Ilku Nam5https://orcid.org/0000-0001-7326-2253Department of Electrical Engineering, Pusan National University, Busan, South KoreaSamsung Electronics, Suwon, South KoreaSamsung Electronics, Suwon, South KoreaDepartment of Electrical Engineering, Pusan National University, Busan, South KoreaDivison of Electronic Engineering, Jeonbuk National University, Jeonju, South KoreaDepartment of Electrical Engineering, Pusan National University, Busan, South KoreaA CMOS up-conversion mixer with an intermediate frequency (IF) amplifier and local oscillator (LO) buffer is presented for mobile 28-GHz-band 5G dual-conversion transceivers. A balun transformer with improved common-mode rejection ratio characteristics is proposed to improve the LO second-harmonic signal suppression, which is a problem in the up-conversion mixer of the 5G dual-conversion architecture. By applying the proposed balun transformer instead of the conventional one, a common-mode rejection ratio greater than 10 dB can be achieved at the frequencies of the LO second-harmonic leakage signal. An up-conversion mixer with an IF amplifier and LO buffer incorporating the proposed balun transformer was implemented in a 65-nm CMOS process, and it draws a current of 31.4 mA from a 1-V supply voltage. It provides a gain larger than 22.2 dB, a noise figure less than 4.1 dB, a third-order output intercept point higher than 4.6 dBm, and an LO second-harmonic leakage signal lower than −55.5 dBm in frequencies ranging from 26.5 GHz to 29.5 GHz. It also exhibits a suppression improvement of the LO second-harmonic leakage signal of approximately 14 dB with respect to an up-conversion mixer with IF amplifier and LO buffer using the conventional balun transformer. The proposed up-mixer with IF amplifier and LO buffer is the first one reported that addresses the 2LO leakage issue and the first demonstration of 2LO leakage signal suppression improvement for a 5G mmWave dual-conversion single-quadrature transmitter.https://ieeexplore.ieee.org/document/9782895/CMOS technologyintermediate frequency amplifierlocal oscillator buffer5Gmillimeter-waveup-conversion mixer |
| spellingShingle | Suyeon Lee Yangji Jeon Dae-Young Yoon Ockgoo Lee Donggu Im Ilku Nam 28-GHz CMOS Up-Conversion Mixer With Improved LO Second-Harmonic Leakage Signal Suppression for 5G Applications IEEE Access CMOS technology intermediate frequency amplifier local oscillator buffer 5G millimeter-wave up-conversion mixer |
| title | 28-GHz CMOS Up-Conversion Mixer With Improved LO Second-Harmonic Leakage Signal Suppression for 5G Applications |
| title_full | 28-GHz CMOS Up-Conversion Mixer With Improved LO Second-Harmonic Leakage Signal Suppression for 5G Applications |
| title_fullStr | 28-GHz CMOS Up-Conversion Mixer With Improved LO Second-Harmonic Leakage Signal Suppression for 5G Applications |
| title_full_unstemmed | 28-GHz CMOS Up-Conversion Mixer With Improved LO Second-Harmonic Leakage Signal Suppression for 5G Applications |
| title_short | 28-GHz CMOS Up-Conversion Mixer With Improved LO Second-Harmonic Leakage Signal Suppression for 5G Applications |
| title_sort | 28 ghz cmos up conversion mixer with improved lo second harmonic leakage signal suppression for 5g applications |
| topic | CMOS technology intermediate frequency amplifier local oscillator buffer 5G millimeter-wave up-conversion mixer |
| url | https://ieeexplore.ieee.org/document/9782895/ |
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