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Author

Manish Kumar

Bio: Manish Kumar is an academic researcher from GLA University. The author has contributed to research in topics: Noise figure & CMOS. The author has an hindex of 5, co-authored 29 publications receiving 58 citations.

Papers
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Journal ArticleDOI
TL;DR: In this article, a wideband low noise amplifier (LNA) consisting of two stages is presented, first stage is a complimentary common gate (CCG) stage to consume low power and low chip area while second stage is the mutually coupled common source (CS) stage used to generate high gain at high frequency.
Abstract: This paper presents a wideband low noise amplifier (LNA) which consist cascade of two stages. First stage, a complimentary common gate (CCG) stage is utilized to consume low power and low chip area while second stage is the mutually coupled common source (CS) stage used to generate high gain at high frequency. The concept of current reuse technique is used in CCG stage to save the dc power. While for the objective of low chip area, mutually coupled inductors are used, mathematically equivalent to a transformer. CCG stage provides high gain at low frequency. A frequency dependent load is generated by mutually coupled CS stage to transfer this gain at high frequency and then this load is transferred to the CCG stage using load transformation technique. This help a lot in achieving wide band input matching hence low noise figure (NF). Proposed LNA is verified mathematically and simulated in 90-nm CMOS process. The measured 3-dB bandwidth is 4.7–14.7 GHz with maximum voltage gain of 17.2 dB, minimum NF of 1.8 dB and S11 < − 10.3 dB. Maximum available power gain (GA) is 11.9 dB and maximum operating power gain is 11.4 dB at frequency of 13.2 GHz.

13 citations

Journal ArticleDOI
26 Mar 2020-Frequenz
TL;DR: The proposed LNA successfully simulated in 90 nm CMOS technology and results of proposed work indicate optimization at frequency 5.7 GHz, which has the edge advantage of improving overall Noise figure (NF) due to wide band impedance matching in UWB.
Abstract: Abstract This paper includes a design analysis of an inductorless low-power (LP) low-noise amplifier (LNA) with active load for Ultra Wide Band (UWB) applications. The proposed LNA consists of two parallel paths, one is the common source (CS) path and second is the CG path. The CG path has the edge advantage of improving overall Noise figure (NF) due to wide band impedance matching in UWB, while the CS path provides high power gain. A method for noise cancellation is adopted, to reduce the noise of CS path with the help of CG path. The proposed LNA successfully simulated in 90 nm CMOS technology. The results of proposed work indicate optimization at frequency 5.70 GHz with 3 dB bandwidth of 4.3 GHz–8.9 GHz. All simulations have been done for a range of frequency 03 GHz–13 GHz in Cadence virtuoso software. The results quoted 1.15 dB NF, −18.12 dB S11, 13.7 dB S21, maximum operating power gain (GP) 11.756 dB at frequency 5.7 GHz and available power gain (GA) is 10.17 dB at frequency 8.61 GHz, with 0.6 V, 0.92 mW broad band LNA.

13 citations

Journal ArticleDOI
TL;DR: A design analysis of low power (LP) and low voltage (LV) optimized low noise amplifier (LNA) for wide band applications and optimization of passive component parameters of proposed LNA, particle swarm optimization (PSO) algorithm has been used.
Abstract: This paper characterizes a design analysis of low power (LP) and low voltage (LV) optimized low noise amplifier (LNA) for wide band applications. With review discussion on design challenges of LP and LV, a new biasing metric has been introduced for radio frequency analog circuit. The proposed LNA consists of two stages, the first stage is a current reuse topology, in which a combination of PMOS transistor stack on top of NMOS transistor has been used with series inductive peaking in the feed-back loop. It helps a lot to achieve the target of LP and LV, while the second stage is a mutually coupled CS stage, used for wideband matching to enhance the bandwidth and noise figure (NF). For optimization of passive component parameters of proposed LNA, particle swarm optimization (PSO) algorithm has been used. All the simulations have been done for a range of frequency 0–35 GHz in Cadence Virtuoso software 45-nm CMOS technology. The results quoted 18.57 dB maximum voltage gain, 2.4 dB NF, 17.1 dB S11, 16.6 dB S21, at frequency 25.4 GHz with 0.8 V, 1.6 mW broad band LNA.

12 citations

Journal ArticleDOI
TL;DR: The minimum mean square error (MMSE) based beamformer is suggested to combat the propagation loss and effect of multiple access interference (MAI), for massive MIMO-IDMA system under downlink communication constraints.
Abstract: Abstract Now-a-days Massive MIMO (mMIMO) become an attractive technology due to its spectral and energy efficiency by the means of simple signal processing. However, in overloaded scenario, wherein the number of users equipments (UEs) are larger than number of antennas, the spectral effciency (SE) suffers and hence error rate performance, it has been shown recently that use of code domain NOMA in mMIMO can improve the SE performance. Further, interleave division multiple access (IDMA) has been drawn much attention as a suitable code domain non-orthogonal multiple access (NOMA) for future communication standards. This paper proposes the work in two folds, first a massive multiple input and multiple output (MIMO) and IDMA communication system is jointly proposed in which antennas on the base station serves users simultaneously in the same frequency band. Both and are large in numbers. Secondly, the minimum mean square error (MMSE) based beamformer is suggested to combat the propagation loss and effect of multiple access interference (MAI), for massive MIMO-IDMA system under downlink communication constraints. With the help of simulation results, the performance of the proposed system with MMSE beamforming have been investigated in terms of BER vs SNR curve plot.

7 citations

Journal ArticleDOI
TL;DR: In this paper , a single-stage EMI filter is designed by incorporating a DM filter offering an equal attenuation to DM and CM noise at switching frequency, while, in multistage EMI filters, the required CM attenuation is split between the two stages.
Abstract: The SiC inverter switching at high frequencies introduces increased common-mode (CM) and differential-mode (DM) electromagnetic interference (EMI) issues, such as shaft voltage, bearing currents, insulation degradation, and poor current quality in the motor. These EMI issues are commonly addressed with EMI filters employing CM and DM inductors. The increased volume and poor performance of a CM inductor designed for SiC inverter switching at high frequency require a modified EMI filter design procedure for enhanced performance and volume minimization. In this work, three EMI filters are presented with modified design procedures. A single-stage EMI filter is designed by incorporating a DM filter offering an equal attenuation to DM and CM noise at switching frequency. Here, the additional CM attenuation demand is fulfilled by a marginal value of the CM inductor, while, in multistage EMI filters, the required CM attenuation is split between the two stages. The multistage EMI filter 1 is designed using an additional CM inductor and existing load capacitance as the second stage, whereas the multistage EMI filter 2 is designed with a lesser value of CM inductance to provide CM attenuation over the entire conducted EMI frequency range. The modified EMI filters are tested on an SiC inverter operating at 200 kHz.

7 citations


Cited by
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ReportDOI
08 Dec 1998
TL;DR: In this article, the authors consider the unique features of UWB technology and propose that the FCC should consider them in considering changes to Part 15 and take into account their unique features for radar and communications uses.
Abstract: In general, Micropower Impulse Radar (MIR) depends on Ultra-Wideband (UWB) transmission systems. UWB technology can supply innovative new systems and products that have an obvious value for radar and communications uses. Important applications include bridge-deck inspection systems, ground penetrating radar, mine detection, and precise distance resolution for such things as liquid level measurement. Most of these UWB inspection and measurement methods have some unique qualities, which need to be pursued. Therefore, in considering changes to Part 15 the FCC needs to take into account the unique features of UWB technology. MIR is applicable to two general types of UWB systems: radar systems and communications systems. Currently LLNL and its licensees are focusing on radar or radar type systems. LLNL is evaluating MIR for specialized communication systems. MIR is a relatively low power technology. Therefore, MIR systems seem to have a low potential for causing harmful interference to other users of the spectrum since the transmitted signal is spread over a wide bandwidth, which results in a relatively low spectral power density.

644 citations

Proceedings Article
01 Jan 2004
TL;DR: In this paper, a SiGe amplifier with on-chip matching network spanning 3-10 GHz was presented, achieving 21dB peak gain, 2.5dB noise figure, and -1dBm input IP3 at 5 GHz, with a 10-mA bias current.
Abstract: Reactive matching is extended to wide bandwidths using the impedance property of LC-ladder filters. In this paper, we present a systematic method to design wideband low-noise amplifiers. An SiGe amplifier with on-chip matching network spanning 3-10 GHz delivers 21-dB peak gain, 2.5-dB noise figure, and -1-dBm input IP3 at 5 GHz, with a 10-mA bias current.

342 citations

Book ChapterDOI
01 Jan 2003
TL;DR: In this paper, an expanded and thoroughly revised edition of Thomas H. Lee's acclaimed guide to the design of gigahertz RF integrated circuits features a completely new chapter on the principles of wireless systems.
Abstract: This expanded and thoroughly revised edition of Thomas H. Lee's acclaimed guide to the design of gigahertz RF integrated circuits features a completely new chapter on the principles of wireless systems. The chapters on low-noise amplifiers, oscillators and phase noise have been significantly expanded as well. The chapter on architectures now contains several examples of complete chip designs that bring together all the various theoretical and practical elements involved in producing a prototype chip. First Edition Hb (1998): 0-521-63061-4 First Edition Pb (1998); 0-521-63922-0

207 citations

01 Jan 2010
TL;DR: Eventually, you will certainly discover a additional experience and ability by spending more cash, nevertheless when?
Abstract: Eventually, you will certainly discover a additional experience and ability by spending more cash. nevertheless when? realize you admit that you require to acquire those every needs when having significantly cash? Why don't you attempt to acquire something basic in the beginning? That's something that will guide you to understand even more around the globe, experience, some places, like history, amusement, and a lot more?

119 citations