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Compact 47 GHz band 32-element CMOS phased array transceiver chip with bidirectional IF phase shifter and IQ mixer

Published online by Cambridge University Press:  07 July 2025

Jun Kobayashi Open the ORCID record for Jun Kobayashi [Opens in a new window] ,
Toshihiro Shimura ,
Yohei Yagishita ,
Masato Nishimori ,
Yoji Ohashi ,
Yoichi Kawano  and
Toshihide Suzuki
Jun Kobayashi*
Affiliation:
Fujitsu Limited, Kawasaki, KNG, Japan
Toshihiro Shimura
Affiliation:
Fujitsu Limited, Kawasaki, KNG, Japan
Yohei Yagishita
Affiliation:
Fujitsu Limited, Kawasaki, KNG, Japan
Masato Nishimori
Affiliation:
Fujitsu Limited, Kawasaki, KNG, Japan
Yoji Ohashi
Affiliation:
Fujitsu Limited, Kawasaki, KNG, Japan
Yoichi Kawano
Affiliation:
Fujitsu Limited, Kawasaki, KNG, Japan
Toshihide Suzuki
Affiliation:
Fujitsu Limited, Kawasaki, KNG, Japan
*
Corresponding author: Jun Kobayashi; Email: kobayashi_r.jun@fujitsu.com
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Abstract

This paper presents a compact, dual-polarized, 32-element, 47 GHz phased array transceiver, fabricated in 55 nm CMOS technology with antenna in package (AiP) technology for 5G communications. The proposed transceiver employs an intermediate frequency (IF) phase-shifting architecture and a facing-up (FU) configuration AiP. The IF phase shifting is realized using a bidirectional IF vector sum phase shifter and IQ mixer with drain bias, achieves less than 1° phase resolution, with rms phase error of 0.047° and rms amplitude error of 0.063 dB. The output third-order intercept point is above +1.0 dBm with Txconversion gain of more than 16.5 dB over the radio frequency ranges from 46 to 49 GHz. To reduce heat concentration from the high integrated phased-array transceiver, a FU AiP-fan-out wafer-level packaging utilizes solder balls mounted on the package as a heat spreader, resulting in a thermal resistance of less than 0.3 K/W. The finalized AiP size is only 12.3 mm × 14.9 mm. Regarding the over-the-air measurement, the proposed transmitter can deliver an equivalent isotropic radiated power of 30.7 dBm with single polarization and demonstrates transmitter error vector magnitude less than 3.9% under 5G NR modulation scheme (256QAM, 100 MHz bandwidth).

Keywords

5G47 GHzantenna in packagebeamformingCMOSdual polarizedphased array

Information

Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , First View , pp. 1 - 11
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Copyright
© The Author(s), 2025. Published by Cambridge University Press in association with The European Microwave Association.

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References

Brambilla, M, Cerutti, M, Colombo, W and Tornatore, M (2023) Evaluation of power consumption in 5G networks at sub-6 GHz and mmWave. 2023 21st Mediterranean Communication and Computer Networking Conference (MedComNet), 43–48, Island of Ponza, Italy.10.1109/MedComNet58619.2023.10168872CrossRefGoogle Scholar
Dunworth, JD, Homayoun, A, Ku, BH, Ou, YC, Chakraborty, K, Liu, G, Segoria, T and Aparin, V (2018) A 28 GHz bulk-CMOS dual-polarization phased-array transceiver with 24 channels for 5G user and basestation equipment. 2018IEEE Int. Solid-State Circuits Conf. (ISSCC), 70–72, San Francisco, CA, USA.10.1109/ISSCC.2018.8310188CrossRefGoogle Scholar
Verma, A, Bhagavatula, V, Singh, A, Wu, W, Nagarajan, H, Lau, PK, Yu, X and Cho, TB (2022) A 16-channel 28/39 GHz dual-polarized 5G FR2 phased-array transceiver IC with a quad-stream IF transceiver supporting non-contiguous carrier aggregation up to 1.6 GHz BW. 2022 IEEE Int. Solid-State Circuits Conf. (ISSCC), 1–3, San Francisco, CA, USA.10.1109/ISSCC42614.2022.9731664CrossRefGoogle Scholar
Gu, X, Liu, D, Baks, C, Tageman, O, Sadhu, B, Hallin, J, Rexberg, L and Valdes-Garcia, A (2019) Development, implementation, and characterization of a 64-element dual-polarized phased-array antenna module for 28-GHz high-speed data communications. IEEE Transactions on Microwave Theory & Techniques 67, 2975–2984.10.1109/TMTT.2019.2912819CrossRefGoogle Scholar
Kim, H-T, Park, BS, Song, SS, Moon, TS, Kim, SH, Kim, JM, Chang, JY and Ho, YC (2017) A 28GHz CMOS direct conversion transceiver with packaged antenna arrays for 5G cellular system, 2017 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), 69–72, Honolulu, HI, USA.10.1109/RFIC.2017.7969019CrossRefGoogle Scholar
Che, FX and Chen, Z (2018) Study on electrical performance and mechanical reliability of antenna in package (AIP) with fan-out wafer level packaging technology. 2018 IEEE 20th Electronics Packaging Technology Conference (EPTC), 180–185, Singapore.10.1109/EPTC.2018.8654303CrossRefGoogle Scholar
Sadhu, B, Tousi, Y, Hallin, J, Sahl, S, Reynolds, S, Renström, Ö … and Valdes-Garcia, A (2017) A 28 GHz 32-element phased-array transceiver IC with concurrent dual polarized beams and 1.4 degree beam-steering resolution for 5G communication. 2017 IEEE International Solid-State Circuits Conference (ISSCC), 128–129, San Francisco, CA, USA.10.1109/ISSCC.2017.7870294CrossRefGoogle Scholar
Kobayashi, J, Shimura, T, Yagishita, Y, Nishimori, M, Ohashi, Y, Kawano, Y and Suzuki, T (2024) A compact 47 GHz band 2×16ch CMOS phased array transceiver chip with bi-directional IF phase shifter and IQ mixer. 2024 19th European Microwave Integrated Circuits Conference (EuMIC), 235–238, Paris, France.10.23919/EuMIC61603.2024.10732826CrossRefGoogle Scholar
Duan, Q, Chen, ZJ, Mao, F, Zou, Y, Li, B, Feng, G, Wang, W and XL, Lin (2022) A 27–29.5GHz 6-bit phase shifter with 0.67 −1.5 degrees rms phase error in 65nm CMOS. 2022 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS), 574–577.10.1109/APCCAS55924.2022.10090332CrossRefGoogle Scholar
Pang, J, Wu, R, Wang, Y, Dome, M, Kato, H, Huang, H, Narayanan, AT and Okada, K (2019) A 28-GHz CMOS phased-array transceiver based on LO phase-shifting architecture with gain invariant phase tuning for 5G New Radio. IEEE Journal of Solid-State Circuits 54, 1228–1242.10.1109/JSSC.2019.2899734CrossRefGoogle Scholar
Shimura, T, Ohshima, T and Ohashi, Y (2017) Low power consumption vector-sum phase shifters using zero-pi amplifiers for millimeter-wave beamforming. 2017 47th European Microwave Conference (EuMC), 42–45.10.23919/EuMC.2017.8230794CrossRefGoogle Scholar
Weng, S, Shen, C and Chang, H (2012) A wide modulation bandwidth bidirectional CMOS IQ modulator/demodulator for microwave and millimeter-wave gigabit applications. 2012 7th European Microwave Integrated Circuit Conference (EuMIC), 8–11, Amsterdam, Netherlands.Google Scholar
Parlak, M and Buckwalter, J (2013) A passive I/Q millimeter-wave mixer and switch in 45-nm CMOS SOI. IEEE Transactions on Microwave Theory & Techniques 61, 1131–1139.10.1109/TMTT.2013.2238247CrossRefGoogle Scholar
Chang, Y-T and Lin, K-Y (2021) A 28-GHz bidirectional active Gilbert-cell mixer in 90-nm CMOS. IEEE Microwave and Wireless Components Letters 31, 473–476.10.1109/LMWC.2021.3061658CrossRefGoogle Scholar
Garcia, JA, Pedro, JC, De La Fuente, ML, De Carvalho, NB, Sánchez, AM and Puente, AT (1999) Resistive FET mixer conversion loss and IMD optimization by selective drain bias. IEEE Transactions on Microwave Theory & Techniques 47, 2382–2392.10.1109/22.808985CrossRefGoogle Scholar