A 39-GHz CMOS Bidirectional Doherty Phased- Array Beamformer Using Shared-LUT DPD With Inter-Element Mismatch Compensation Technique for 5G Base Station

Li, Zheng; Pang, Jian; Zhang, Yi; Yamazaki, Yudai; Wang, Qiaoyu; Luo, Peng; Chen, Weichu; Liao, Yijing; Tang, Minzhe; Wang, Yun; Fu, Xi; You, Dongwon; Oshima, Naoki; Hori, Shingo; Park, Jeehoon; Kunihiro, Kazuaki; Shirane, Atsushi; Okada, Kei

doi:10.1109/jssc.2022.3232137

Cited by 12 publications

(4 citation statements)

References 47 publications

(64 reference statements)

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“…Recently, millimeter-wave (mm-wave) transceivers have been intensively researched for multi-Gb/s data transfer with low-latency and high reliability [1][2][3][4][5][6][7][8]. For fifth-generation (5G) cellular communications, n260 (37~40 GHz) and n257 (26.5~29.5 GHz) mm-wave bands are allocated for 5G applications [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…For fifth-generation (5G) cellular communications, n260 (37~40 GHz) and n257 (26.5~29.5 GHz) mm-wave bands are allocated for 5G applications [9][10][11]. Transceiver systems [1][2][3][4][5][6][7][8] have successfully demonstrated 5G cellular communications using mm-wave bands. The transceivers for mm-wave 5G cellular communications use phased arrays to enhance communication distance and coverage to non-line-of-sight propagation [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…Transceiver systems [1][2][3][4][5][6][7][8] have successfully demonstrated 5G cellular communications using mm-wave bands. The transceivers for mm-wave 5G cellular communications use phased arrays to enhance communication distance and coverage to non-line-of-sight propagation [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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A 28 GHz Highly Linear Up-Conversion Mixer for 5G Cellular Communications

Byeon

2024

Technologies

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In this paper, we present a highly linear direct in-phase/quadrature (I/Q) up-conversion mixer for 5G millimeter-wave applications. To enhance the linearity of the mixer, we propose a complementary derivative superposition technique with pre-distortion. The proposed up-conversion mixer consists of a quadrature generator, LO buffer amplifiers, and an I/Q up-conversion mixer core and achieves an output third-order intercept point of 15.7 dBm and an output 1 dB compression point of 2 dBm at 27.6 GHz, while it consumes 15 mW at a supply voltage of 1 V. The conversion gain is 11.4 dB and the LO leakage and image rejection ratio are −56 dBc and 61 dB, respectively, in the measurement. The proposed I/Q up-conversion mixer is suitable for 5G cellular communication systems.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A 28 GHz Highly Linear Up-Conversion Mixer for 5G Cellular Communications

Byeon

2024

Technologies

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“…The other one is the phase-to-digital converter (PDC)/analog-to-digital converter (ADC) detection technique shown in Fig. 2(b) [12], [17], [21]. This technique achieves less than 0.1 • and 0.1-dB detection accuracy with the independent phase and amplitude detection.…”

Section: Introductionmentioning

confidence: 99%

A 37–43.5-GHz Phase and Amplitude Detection Circuit With 0.049° and 0.036-dB Accuracy for 5G Phased-Array Calibration Using Transformer-Based Injection-Enhanced ILFD

Yamazaki

Sakamaki

Pang

et al. 2023

IEEE J. Solid-State Circuits

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This article introduces a high-accuracy phase and amplitude detection circuit for 5G phased-array calibration. By utilizing a 39 GHz-150 kHz down-conversion scheme, the phase and amplitude information are detected separately with a phase-to-digital converter (PDC) and an analogto-digital converter (ADC). In addition, to reduce the number of reference signals, a divide-by-4 injection-locked frequency divider (ILFD) using a transformer-based injection-enhancing technique is implemented for wideband reference signal generation. This ILFD realizes a wide locking range of 16.3-23.4 GHz (35.8%) with 5.05-mW power consumption. The detection circuit achieves less than 0.049 • and 0.036-dB detection rms errors at 39 GHz. The wideband high-accuracy detection is also achieved from 37 to 43.5 GHz. The total power consumption is 50 mW with a 1-V VDD. The total core area is 1.43 mm 2 in a 65-nm CMOS process.

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RF circuit techniques for transition to 5G advanced

Balteanu

2024

Int. J. Microw. Wireless Technol.

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Worldwide adoption of 5G mobile devices has been one of the main driving engines behind semiconductor industry. Since the initial release in 2020, 5G-enabled devices have surpassed the market penetration of 3G/4G smartphones. 5G brings higher data capacity, low latency, and new applications. These are possible due to lower feature nodes such as FinFET 3 nm/5 nm but also due to improvements of the 5G radio frequency (RF)front-end circuitry. This paper presents 5G RF front-end architectures with novel circuits and measurement details which will be part of future 5G advanced and 6G mobile devices and are easier to be controlled using digital circuitry. The paper presents an envelope-controlled power amplifier (PA) principle, along with a novel simplified calibration architecture designed for 5G/5G+ operating under 6 GHz, as well as for frequency range 2 millimeter-wave PAs. An earlier version of this paper was presented at the 2023 53rd European Microwave Conference and was published in the Proceedings [Balteanu F, Thoomu K, Pingale A, Venimadhavan S, Sarkar S, Choi Y, Modi H, Drogi S, Lee J and Agarwal B (2023) Enabling RF circuit techniques for 5G and beyond In 53rd European Microwave Conference (EuMC), Berlin, Germany, 22–25].

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A 39-GHz CMOS Bidirectional Doherty Phased- Array Beamformer Using Shared-LUT DPD With Inter-Element Mismatch Compensation Technique for 5G Base Station

Cited by 12 publications

References 47 publications

A 28 GHz Highly Linear Up-Conversion Mixer for 5G Cellular Communications

A 28 GHz Highly Linear Up-Conversion Mixer for 5G Cellular Communications

A 37–43.5-GHz Phase and Amplitude Detection Circuit With 0.049° and 0.036-dB Accuracy for 5G Phased-Array Calibration Using Transformer-Based Injection-Enhanced ILFD

RF circuit techniques for transition to 5G advanced

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