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A 7–9 GHz I/Q Up-Conversion Mixer Employing a Linear Voltage-to-Current Converting Baseband Input Stage for 5G New Radio Cellular Applications

Department of Electronics Engineering and Department of BIT Medical Convergence, Kangwon National University, Chuncheon 24341, South Korea

System LSI Business, Samsung Electronics, Hwaseong 18448, South Korea

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Donggu Lee

Department of Electronics Engineering and Department of BIT Medical Convergence, Kangwon National University, Chuncheon 24341, South Korea

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Jeongwoo Lee

GCT Semiconductor Inc., Seoul 07071, South Korea

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Junghwan Han

Department of Radio and Information Communication Engineering, Chungnam National University, Daejeon 34134, South Korea

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, and

Kuduck Kwon

Department of Electronics Engineering and Department of BIT Medical Convergence, Kangwon National University, Chuncheon 24341, South Korea

E-mail Address: kdkwon@kangwon.ac.kr

Corresponding author.

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https://doi.org/10.1142/S0218126622501432Cited by:0 (Source: Crossref)

Abstract

This work presents a 7–9GHz in-phase/quadrature (I/Q) direct up-conversion mixer employing a linear voltage-to-current converting baseband input stage for 5G new radio frequency range 2 cellular applications. The proposed baseband stage improves both the large-signal handling capability and small-signal linearity at the input stage of the mixer. The designed double-balanced I/Q up-conversion mixer, which is based on Gilbert-cell mixer, consists of a voltage-to-current converting input stage, switching stages, and an RLC tank. Simulated in a 40-nm CMOS process, the up-conversion mixer achieves a conversion gain of 5dB, input-referred third-order intercept point of 9.6dBm, and input 1-dB gain compression point of –0.8dBm. It draws a DC bias current of 15.8mA from a nominal supply voltage of 1.1V, and the active area is 0.129mm².

This paper was recommended by Regional Editor Giuseppe Ferri.

Keywords:

References

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