Noise Cancelation? Explained!: The Role of Feedback in Noise-Canceling LNAs and Receivers

Das, Indrajit; Nallam, Nagarjuna

doi:10.1109/mmm.2017.2712039

Cited by 5 publications

(5 citation statements)

References 23 publications

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“…For the small-signal model analysis [7] shown in Fig. 2(c), a MOSFET transistor in saturation can be modeled as a transconductance juncture with a signal voltage summer at the input and a current summer at the output.…”

Section: Mahesh Mudavath K Hari Kishore Sanjay Madupu Prashanth Chmentioning

confidence: 99%

“…Although the circuit diagram in Fig. 2(b) is a helpful generality of NC LNAs, the structure of new NC LNAs requires some extra knowledge [7] [10]. The solution to the NC principle is the recognition of the two nodes in a circuit where the signal appears with the same polarity but the instantaneous noise appears with opposite polarity [7].…”

Section: Mahesh Mudavath K Hari Kishore Sanjay Madupu Prashanth Chmentioning

confidence: 99%

“…2(b) is a helpful generality of NC LNAs, the structure of new NC LNAs requires some extra knowledge [7] [10]. The solution to the NC principle is the recognition of the two nodes in a circuit where the signal appears with the same polarity but the instantaneous noise appears with opposite polarity [7]. If such nodes exist in a circuit, additional circuit can forever be added of (signal + noise) voltages at these nodes suitably and combine them in such a way that the noise is nullified at the output shown in Fig.…”

Section: Mahesh Mudavath K Hari Kishore Sanjay Madupu Prashanth Chmentioning

confidence: 99%

“…These techniques are frequently explained with the help of the block diagram shown in Fig. 1 [7]. Here the input signal coming from a source of antenna terminal with internal impedance Rs is concurrently fed to a matching of CS amplifier and CG amplifier.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Low Noise Amplifier Design of CMOS Inductorless with Noise Cancellation Technique

Mudavath,

Kishore,

Madupu

et al. 2019

IJEAT

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This article presents the Low Noise Amplifier (LNA) design of CMOS Inductorless with noise cancellation (NC) technique for portable wireless receivers. An Inductorless CMOS LNA for multi-standard wireless applications with lessarea, single-chip is presented. This NC technique is used to cancel out the noise involvement in LNAs at the output of matching device. The proposed Inductorless CMOS LNA designed in a CMOS 45nm GPDK technology process. The simulated results within the frequency range of 1.04GHz-1.8GHz are considered here. The maximum gain has achieved 20dB @ 1.04GHz, 23dB @ 1.8GHz and a low NF of 1.2dB @ 1.04GHz, 0.6dB @ 1.8GHz. The input and output reflection coefficients are obtained as less than -10dB it is desirable value to fit in this LNA.

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Section: Mahesh Mudavath K Hari Kishore Sanjay Madupu Prashanth Chmentioning

confidence: 99%

Section: Mahesh Mudavath K Hari Kishore Sanjay Madupu Prashanth Chmentioning

confidence: 99%

Section: Mahesh Mudavath K Hari Kishore Sanjay Madupu Prashanth Chmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Low Noise Amplifier Design of CMOS Inductorless with Noise Cancellation Technique

Mudavath,

Kishore,

Madupu

et al. 2019

IJEAT

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show abstract

“…Recent research studies show that the noise introduced by the core transistor of amplifier can be canceled, while the tradeoff between the BW and NF can be released by introducing the noise-canceling scheme to the LNA implementation [16]. Two well-known noise-canceling LNA topologies are CG noise canceling and resistive feedback CS noise canceling [17]. Fig.…”

Section: Introductionmentioning

confidence: 99%

A 22.9–38.2-GHz Dual-Path Noise-Canceling LNA With 2.65–4.62-dB NF in 28-nm CMOS

Deng

Zhou

Qian

et al. 2021

IEEE J. Solid-State Circuits

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In this article, a 22.9-38.2-GHz dual-path noisecanceling low noise amplifier (LNA) is proposed, which can achieve a low noise figure (NF) by reducing the noise of both paths. Such LNA consists of one common gate (CG) amplifier with one three-stage transformer, one resistive feedback common-source (CS) amplifier, and two amplitude-adjusting amplifiers. The three-stage transformer is used in the CG amplifier to provide gain-boosting, noise-reducing, and wideband inter-stage matching operation, simultaneously. Meanwhile, amplitude-adjusting amplifiers with reconfigurable phase-tuning lines are utilized in both paths to optimize the noise-canceling performance. To verify the aforementioned principle, a dualpath noise-canceling LNA is implemented and fabricated using a conventional 28-nm CMOS technology. The proposed LNA consumed 18.9 mW under a 0.9-V supply. The measured NF is 2.65-4.62 dB within the operating frequency range of 22.9-38.2 GHz, while the peak gain is 14.5 dB. The in-band input 1-dB compression point (IP 1 dB ) and input third-order intercept point (IIP3) are −13.2 to −6.6 and −3.6 to 3.2 dBm, respectively.

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A 0.25–2.9 GHz Low-Noise Amplifier Employing Source-Follower Feedback in 40nm CMOS

Liu,

2024

2024 International Conference on Microwave and Millimeter Wave Technology (ICMMT)

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Noise Cancelation? Explained!: The Role of Feedback in Noise-Canceling LNAs and Receivers

Cited by 5 publications

References 23 publications

Low Noise Amplifier Design of CMOS Inductorless with Noise Cancellation Technique

Low Noise Amplifier Design of CMOS Inductorless with Noise Cancellation Technique

A 22.9–38.2-GHz Dual-Path Noise-Canceling LNA With 2.65–4.62-dB NF in 28-nm CMOS

A 0.25–2.9 GHz Low-Noise Amplifier Employing Source-Follower Feedback in 40nm CMOS

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