A 32-40 GHz 7-bit CMOS Phase Shifter with 0.38dB/1.6° RMS Magnitude/Phase Errors for Phased Array Systems

Li, Yongjie; Zhang, Duan; Lv, Wei; Pan, Dongfang; Xie, Zipeng; Dai, Yong; Sun, Liguo

doi:10.1109/rfic49505.2020.9218318

Cited by 19 publications

(10 citation statements)

References 7 publications

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“…The VSPS in this work achieves a wide bandwidth with comparable insertion loss and RMS amplitude and phase error. Compared to [2][3][4], the proposed VSPS provides continuous phase shift and can adjust both amplitude and phase. Compared to previous VSPS [1], this work achieves a wider bandwidth and higher linearity at the cost of DC power consumption.…”

Section: Measurement Resultsmentioning

confidence: 99%

“…(GHz) Resolution Avg. loss (dB) RMS amp., phase error Input P1dB (dBm) Pdc (mW) Chen et al [2] 90-nm CMOS 36-40 4 bit 20.2-21 < 2.6 dB, < 2.6°-0 Li et al [3] 65-nm CMOS 32-40 7 bit 16.9-18.1 < 0.38 dB, < 1.6° -0 Tsai et al [4] 65-nm CMOS 27-42 5 bit 12.4 ± 1.2 a < 2.1 dB, < 3.8°7.5 b @ 39 GHz 0 Xiong et al [1] 90-nm CMOS 35-41 Cont. 5.9-7 < 0.35 dB, < 5.1°…”

Section: Discussionmentioning

confidence: 99%

“…Several phase shifters with various topologies have been reported for the mm-wave 5G application [1][2][3][4]. Nonetheless, there have been few vector-sum phase shifters (VSPS) yet, particularly in the n260 band (37-40 GHz) [1].…”

Section: Introductionmentioning

confidence: 99%

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A CMOS Vector-Sum Phase Shifter for 5G mm-Wave Application

Kim

Jeon

2022

J Electromagn Eng Sci

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This paper presents a wideband CMOS vector-sum phase shifter (VSPS) targeting the n260 band of 5G communication. A differential quadrature generator is implemented using a Marchand balun and two 90° coupled-line couplers to improve robustness to process and temperature variations. The quadrature vector signals are combined by a following vector modulator that adopts a double Gilbert-cell topology. The linearity and input-matching performance are enhanced at the expense of extra DC consumption by stacking a current source with high bias. The measurement shows that the VSPS provides a continuous 360° phase shift with an average insertion loss of 16.3 dB at 37 GHz. The root-mean-square (RMS) amplitude and phase errors maintain less than 1.5 dB and 4.9°, respectively, from 30.9 GHz to 41.7 GHz. The input-referred 1-dB compression point is 5.7 dBm at 38 GHz. It is also demonstrated by 484-state measurement that the phase and amplitude can be adjusted in a fine resolution.

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Section: Measurement Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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A CMOS Vector-Sum Phase Shifter for 5G mm-Wave Application

Kim

Jeon

2022

J Electromagn Eng Sci

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“…Neural Network-Based Model Waveform Processing at Transmission and Observation Path [67], [81], [89]- [103] [110]- [120], [122], [123] [67], [75], [82]- [88] DAC and ADC nonidealities [29], [130], [133]- [141] RF Sub-Components Effects [130]- [132], [142], [145] [130], [131] Amplitude-Compensated Phase Shifter [78], [79], [148]- [155], [157], [158] Phase-Compensated and Low-Noise Variable Gain Amplifier [44], [149], [159]- [169] SVM-Based Model better output performance. Since the invention of wireless communication, the linearity of transmitting signals hold paramount importance [73], [74].…”

Section: Baseband Waveform Processing Volterra Series-based Modelmentioning

confidence: 99%

“…Conversely, RF passive PSs have the commandment over their active counterpart in reducing circuit complexity and giving near 0-milli-watt power consumption [78], [155]. Since RF signal is directly generated from VSG, no complex digital waveforms from arbitrary baseband generators are involved in this approach.…”

Section: • Critical Analysismentioning

confidence: 99%

Predistortion-Based Linearization for 5G and Beyond Millimeter-Wave Transceiver Systems: A Comprehensive Survey

Haider

You

et al. 2022

IEEE Commun. Surv. Tutorials

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The next-generation (5G/6G) wireless communication aims to leapfrog the currently occupied sub-6 GHz spectrum to the wideband millimeter-wave (MMW) spectrum. However, MMW spectrums with high-order modulation schemes drive the power amplifier (PA) at significant back-off, causing severe nonlinear distortions, thus deteriorating the transceiver's (TRXs) modulation process. Typically, the TRX efficacy is quantified with standardized linearization matrices, which take advantage of different predistortion (PD) schemes to handle deep compression of the PA. In this regard, TRX baseband signals are mostly linearized in the digital domain, where digitally controlled linearization needs higher sampling rates due to increasing MMW bandwidths to compensate for intermodulation (IMD) products, resulting in increased system cost and power consumption. Alternately, the digitally controlled analog-based linearization, i.e., the hybridization of digital predistortion (DPD) and analog predistortion (APD), is highly productive and cost-effective for fulfilling the linearized energy-efficient design vision of MMW networks. Therefore, this paper puts an extensive spotlight on the progress in PD-based linearization for 5G and beyond communications. It first provides background information on the advancements of PD schemes through recent surveys, then classifies the general roadmap of PD waveform processing across the TRX system models as preliminary. After this, we present three prominent PD architectures and their design approaches with intrinsic performance metrics. Finally, we explore four case studies encompassing PD operation under certain nonlinear constraints of different communication schemes. We examine the suitability of PD-based linearization solutions, both existing and proposed till the first quarter of 2022, and identify the potential prospects in this domain.

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A compact 90–96 GHz 6‐bit passive vector modulator phase shifter in 28‐nm CMOS for phase array applications

Deng

Pan

Zhang³

et al. 2022

Micro & Optical Tech Letters

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This letter presents a 90-96 GHz 6-bit digital control passive vector modulator phase shifter (PS) in a 28-nm complementary metal-oxide-semiconductor for phase array application. In PS, a full differential directional coupler as a quadrature generator (QG) is proposed, which achieves wide bandwidth and a high-performance orthogonal network by introducing more pole-zero pairs. In the vector modulator, two 6-bit binary-weighted vector modulators, respectively scale the quadrature signal generated by QG to achieve a high-resolution vector phase. The measured PS cover ∘ 360 and the minimal root mean square (RMS) phase error is ∘ 0.7 and RMS gain error 0.3 dB at 93 GHz, respectively. The fabricated PS occupies 310 × 280 μm 2 excluding pads with no power consumption.

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A 32-40 GHz 7-bit CMOS Phase Shifter with 0.38dB/1.6° RMS Magnitude/Phase Errors for Phased Array Systems

Cited by 19 publications

References 7 publications

A CMOS Vector-Sum Phase Shifter for 5G mm-Wave Application

A CMOS Vector-Sum Phase Shifter for 5G mm-Wave Application

Predistortion-Based Linearization for 5G and Beyond Millimeter-Wave Transceiver Systems: A Comprehensive Survey

A compact 90–96 GHz 6‐bit passive vector modulator phase shifter in 28‐nm CMOS for phase array applications

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