A Ka band CMOS differential LNA with 25 dB gain using neutralized bootstrapped cascode amplifier

Ding, Bowen; Yuan, Shengyue; Zhao, Chen; Li, Tao; Li, Xiaoyun; Tong, Tian

doi:10.1587/elex.15.20180230

Cited by 8 publications

(6 citation statements)

References 11 publications

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“…For the latter, the selection and design of its structure is very important, which directly affects the performance and area cost of the entire circuit. As a multi‐port passive network with both inductive and capacitive characteristics, transformer is very suitable for impedance conversion and circuit matching in the millimeter wave frequency band, and has been widely used in the design of the existing millimeter wave LNA 4–8 . Even so, because the transformer structure has many variable physical parameters and its physical characteristics are relatively complex, its design still needs many iterations to achieve good results.…”

Section: Proposed Methodsmentioning

confidence: 99%

“…As a multi-port passive network with both inductive and capacitive characteristics, transformer is very suitable for impedance conversion and circuit matching in the millimeter wave frequency band, and has been widely used in the design of the existing millimeter wave LNA. [4][5][6][7][8] Even so, because the transformer structure has many variable physical parameters and its physical characteristics are relatively complex, its design still needs many iterations to achieve good results. Moreover, multi-stages circuit will require more designs and optimizations.…”

Section: Typical Mm-wave Lna Structure and Synthesis Goalsmentioning

confidence: 99%

See 1 more Smart Citation

An efficient mm‐waveLNAimpedance match synthesis methodology with coordinate descent method

Zhou

Wen

Wang

2023

Int J Numerical Modelling

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In this paper, a novel synthesis methodology for LNA impedance matching is proposed, which consists of two main phases: database generation and parameter optimization. In the former phase, a large‐scale sweep of electromagnetic simulations of passive components is performed to speed up parameter optimization. In the latter phase, the coordinate descent method is used as the optimizer of this methodology. Since frequently dozens of parameters need to be optimized in synthesize LNAs, the coordinate descent method can temporarily fix some parameters in each iteration, thus convert the optimization problem into multiple simple low or even one‐dimensional optimizations, which can eventually obtain high‐quality LNAs quickly in fewer descent iterations. This methodology is applied to a Ka‐band two‐stage differential LNA design using 65 nm CMOS technology, and the synthesis time is only 3 min, which is tens of times faster compared to existing synthesis methods. The proposed LNA circuit is fabricated and the measured results verify the feasibility of the synthesis method.

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Section: Proposed Methodsmentioning

confidence: 99%

Section: Typical Mm-wave Lna Structure and Synthesis Goalsmentioning

confidence: 99%

An efficient mm‐waveLNAimpedance match synthesis methodology with coordinate descent method

Zhou

Wen

Wang

2023

Int J Numerical Modelling

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“…Benefit from the advantages of high integration and relatively low cost of CMOS technology, several mmwave LNAs in the CMOS process have been reported [1,2,3,4,5,6,7]. However, due to the lossy silicon substrate and low carrier mobility, these LNAs have relatively poor noise figure, gain, and linearity performance.…”

Section: Introductionmentioning

confidence: 99%

A 1.6-dB minimum NF, 28-38GHz GaAs low noise amplifier using wideband multistage noise matching technique

Yang

Wang

Zhang

et al. 2022

IEICE Electron. Express

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This letter presents a 28-38 GHz low-noise-amplifier (LNA) monolithic microwave integrated circuit (MMIC) using 0.15 µm GaAs pseudomorphic high electron mobility transistor (pHEMT) process. Inductive degeneration and shunt-series peaking techniques are employed to obtain simultaneous input and noise matching (SINM) and wideband flat gain. A novel wideband multistage noise matching technique based on a high-pass matching network is proposed to achieve low NF and further improve gain flatness over a wide frequency range. A four-stage LNA prototype is designed and fabricated based on the proposed technique. Measurement results show that the proposed LNA has a 1.6-dB minimum NF and an average gain of 23.7 dB in the entire operating band. S11 and S22 are better than −10 dB from 30 to 37 GHz. The measured output 1-dB compression point (OP 1d B ) is higher than 14.8 dBm from 28 to 38 GHz. The chip is realized within 2.1*1.5 mm 2 and consumes 56 mA current from a 5 V supply.

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“…Over the past years, the CMOS millimeter-wave circuit research has attracted enormous attention [1,2,3,4,5,6,7,8,9,10,11] as the CMOS technology node scales. Among components of a wireless system, the low noise amplifier (LNA) is a particularly crucial one since it is required to offer a high gain to reduce the noise contribution of subsequent circuits [9,12,13,14], thus elevating the system sensitivity. 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.…”

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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A Ka band CMOS differential LNA with 25 dB gain using neutralized bootstrapped cascode amplifier

Cited by 8 publications

References 11 publications

An efficient mm‐waveLNAimpedance match synthesis methodology with coordinate descent method

An efficient mm‐waveLNAimpedance match synthesis methodology with coordinate descent method

A 1.6-dB minimum NF, 28-38GHz GaAs low noise amplifier using wideband multistage noise matching technique

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

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