A V-Band Power Amplifier With 23.7-dBm Output Power, 22.1% PAE, and 29.7-dB Gain in 65-nm CMOS Technology

Chang, Yang; Wang, Yunshan; Chen, Chun-Nien; Wu, Yen-Ting; Wang, Huei

doi:10.1109/tmtt.2019.2939527

Cited by 24 publications

(2 citation statements)

References 26 publications

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“…However, since we are comparing the required powers to those of the Cartesian, the exact parameter values are inconsequential and similar results are obtained with other parametrizations as well. Additionally, the ML-OP is assumed to utilize N A parallel PA branches in the generation of the component signals, requiring an additional 2 dB of power to overcome the loss in the combiner, which can be realized for up to N A = 16, for example, by two-stages of 4-way combiners with approximately 1 dB of insertion loss [55]. It can be seen that the sequential architecture benefits from splitting the signal in two parts before quantization with limited resolution, which turns into requiring less power than the Cartesian TX.…”

Section: Comparison To Reference Architecturesmentioning

confidence: 99%

Multilevel Outphasing With Over-the-Air Combining in Large Antenna Arrays

Lampu,

Xu,

Brihuega

et al. 2023

IEEE Trans. Commun.

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This article investigates the feasibility of combinerless multilevel outphasing transmitter as a potential architecture for large millimeter-wave (mmWave) phased arrays. We consider two distinct ways of distributing the component signals to the antennas and develop a model for the received signal at each radiated spatial direction from a phased array. Based on the received signal model, we derive expressions for the signal-to-distortion ratio as well as total power experienced at each spatial direction. Furthermore, antenna branch mismatches, overload distortion and quantization are considered, and an analytical model for the signal-to-distortion ratio at the intended receiver is derived. We additionally establish a model for comparing the achievable energy efficiency to those of the relevant reference methods. Extensive numerical experiments are carried out to verify the analytical works, and to assess the commonly used metrics of error vector magnitude (EVM) and total radiated power adjacent channel leakage ratio (TRP-ACLR). It is shown that the combinerless architecture is a valid option for mmWave phased arrays, demonstrating favorable EVM results and TRP-ACLR beyond the 28 dBc limit imposed by the 3GPP, even in the presence of the considered distortions. The conducted energy efficiency assessment shows that efficiency of the reference methods can be exceeded with sufficient amount of outphasing levels. The considered architecture is thus an interesting alternative for addressing the linearity vs. energy-efficiency challenge in mmWave phased-array systems.

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Section: Comparison To Reference Architecturesmentioning

confidence: 99%

Multilevel Outphasing With Over-the-Air Combining in Large Antenna Arrays

Lampu,

Xu,

Brihuega

et al. 2023

IEEE Trans. Commun.

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“…However, the LNA in CMOS still has many difficulties in attaining high gain and becomes a power-consuming block when the operating frequency enters the millimeter-wave regime. The neutralization technique has been a useful and popular method in the amplifier design to provide higher signal magnification [15,16,17,18,19,20,21,22,23,24,25]. Nevertheless, it is still not an effective way to make maximum use of the active devices.…”

Section: Introductionmentioning

confidence: 99%

A high gain 79-GHz low noise amplifier using inductor-embedded neutralization technique

Cheng

Mei

et al. 2021

IEICE Electron. Express

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This paper presents a 79 GHz low noise amplifier (LNA) design featuring high gain fabricated in a 40-nm CMOS process. To make better use of active devices, we propose an inductor-embedded neutralization technique. The implemented prototype consists of four-stage common-source amplifiers using the proposed technique and transformer-based matching networks. The measurement results show that the amplifier realizes a peak gain of 23 dB at 79 GHz with 14.4 mW power dissipation and 0.4 mm 2 area occupation. The LNA achieves a minimum noise figure (NF) of 6.3 dB.

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