Design and optimisation of feedforward noise cancelling complementary metal oxide semiconductor LNA for 2.4 GHz WLAN applications

Roobert, A. Andrew; Rani, D. Gracia Nirmala; Rajaram, S.

doi:10.1049/iet-cds.2018.5291

Cited by 11 publications

(4 citation statements)

References 42 publications

(75 reference statements)

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“…19 Since the LNAs of different technology nodes are compared with the proposed work, Z N in is taken for the channel length normalization. FoM I is calculated by considering the gain, frequency, NF, DC power consumption, and the normalized input impedance (33).…”

Section: Results and Analysismentioning

confidence: 99%

“…The voltage gain of the second stage (A v2 ) is determined as in Equation (18), and it is tuned to the 2.3 GHz of frequency. It is improved by increasing the e 4 , which increases with the load inductance L 7 (19).…”

Section: Gain Calculationmentioning

confidence: 99%

“…Instead of this band count, bandwidth is included for the FoM of wideband LNAs. 19 Since the LNAs of different technology nodes are compared with the proposed work, Z N in is taken for the channel length normalization. IIP3 of the LNA is added in the FoM II calculation.…”

Section: Figure 11mentioning

confidence: 99%

See 2 more Smart Citations

Design and analysis of 0.9 and 2.3‐GHz concurrent dual‐band CMOS LNA for mobile communication

Roobert¹,

Rani²

2019

Circuit Theory & Apps

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A complementary metal-oxide-semiconductor (CMOS) dual-band low-noise amplifier (LNA) for 2G/3G/4G mobile communications is presented. It operates at 0.9 and 2.3 GHz of frequencies. The dual-band operation is achieved by adding a modified notch-filtering path in the wideband LNA. The modified notch-filtering path does not require additional power to cancel the signals of the stop band frequency. The impact of the filtering path in the proposed LNA is analyzed. Improved results are observed in dual bands of frequency. Sustainability of the LNA under process corner variation and temperature variation are examined, and it is found to be suitable for the application. The proposed LNA is designed at 90-nm technology in Cadence Virtuoso with 0.5 and 0.6-V supply. The post-layout simulation shows 22 dB of gain (S 21 ), 2 dB of Noise Figure (NF), and −5.5 dBm of IIP3 at the high band. In the low band, 24 dB of S 21 , 2.7 dB of NF, and −6.65 dBm of IIP3 are reached. The circuit consumes 5.2 mW of power and 0.0918 mm 2 of area. The efficiency of the LNA is estimated by the figure of merit, and comparable results are secured in the proposed work.

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Section: Results and Analysismentioning

confidence: 99%

Section: Gain Calculationmentioning

confidence: 99%

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Design and analysis of 0.9 and 2.3‐GHz concurrent dual‐band CMOS LNA for mobile communication

Roobert¹,

Rani²

2019

Circuit Theory & Apps

Self Cite

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show abstract

“…In the second one, multiple channels are sensed simultaneously. 17 In the second condition, the optimization problem arises, and it can be converted to a solvable convex optimization problem. 18 The sub-problems can be solved by employing special matrices and reformation techniques.…”

Section: Introductionmentioning

confidence: 99%

Adaptive cluster‐based heuristic approach in cognitive radio networks for5Gapplications

Devaraj¹,

Aruna²,

Muthukumaran³

et al. 2021

Trans Emerging Tel Tech

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The main objective of cognitive radio network is to provide flexible spectrum management, by permitting the secondary users (SUs) to temporarily access the licensed spectrum in the absence of a primary user. In the existing backward induction approach, each SU performs spectrum sensing and consequently reports the sensing details to the centralized controller. In the proposed work, an adaptive cluster-based heuristic approach (ACBHA) with cooperative spectrum sensing (CSS) scheme has been proposed for cognitive radio medium access control networks for 5G applications. To identify the availability of unused spectrum, the proposed CSS-based ACBHA algorithm adopts a cluster-based selection scheme. Simulation results show that the proposed CSS-based ACBHA provides a better result compared with existing techniques. The performance parameters such as false alarm probability, the probability of detection, spectrum sensing time, slot length, noise density have been analyzed using MATLAB R2012a.

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Design and analysis of 28 GHz CMOS low power LNA with 6.4 dB gain variability for 5G applications

Roobert¹,

Arunodhayamary²,

Rani³

et al. 2022

Trans Emerging Tel Tech

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A 28 GHz two stage low noise amplifier (LNA) is proposed with envelope detection technique for power reduction (21.62%) and tunable negative feedback capacitor for gain variation in 40 nm CMOS technology. The envelope detection circuit turn‐on the second half of the LNA by the RF signal input received at the first stage. The default gain is increased (31.53%) by the tunable negative feedback capacitor circuit of the LNA with the control voltage from 0 to 1 V. In addition, 6.22 GHz of bandwidth is achieved with the tunable gain from 20.3 dB to 26.7 dB. The first stage of the LNA is designed with the inductive source degeneration for the noise reduction, and the multiple‐gate topology is involved in the second stage to improve the linearity. The third‐order input intercept point and the noise figure of the LNA are −7 dBm and 2.86 dB, respectively. When the second stage is turned‐on and turned‐off the LNA consumes 7.4 mW and 5.8 mW of power, respectively, from the 1 V supply. The proposed LNA requires 0.19 mm2 of core area. The performance of the LNA under process corner variation and temperature variation are analyzed.

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Design and optimisation of feedforward noise cancelling complementary metal oxide semiconductor LNA for 2.4 GHz WLAN applications

Cited by 11 publications

References 42 publications

Design and analysis of 0.9 and 2.3‐GHz concurrent dual‐band CMOS LNA for mobile communication

Design and analysis of 0.9 and 2.3‐GHz concurrent dual‐band CMOS LNA for mobile communication

Adaptive cluster‐based heuristic approach in cognitive radio networks for5Gapplications

Design and analysis of 28 GHz CMOS low power LNA with 6.4 dB gain variability for 5G applications

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