Browsing by Author "Kaliyath, Y."

Now showing 1 - 7 of 7

A 1.8 v 11.02 ?w single-ended inverter-based OTA with 113.62 dB gain
(2016) Kaliyath, Y.; Laxminidhi, T.
This paper presents a low power 1.8 V single-ended operational trans conductance amplifier (OTA) with a very high dc gain targeted for audio applications. Cascoding and gain boosting are employed to achieve the high gain. The amplifier is implemented in UMC 180 nm CMOS technology. For a typical process corner, the amplifier provides a dc gain of 113.62 dB and a unity gain bandwidth of 2.49 MHz at 62.9� phase margin with capacitive load of 2.5 pF. The amplifier consumes only 6.12 ?A of quiescent current from 1.8 V supply. The amplifier exhibits good performance across all the process corners with the use of body bias technique. � 2016 IEEE.
3D-Printing Technology: A Review
(Institute of Electrical and Electronics Engineers Inc., 2024) Mahapatra, R.K.; Kaliyath, Y.; Shet, N.S.V.; Satapathi, G.S.; Mahapatro, S.R.; Lakshmu Naidu, M.L.
The process of digital fabrication, commonly known as 3D printing, involves gradually adding materials to a geometric representation to produce actual items. The advantages of 3D printing for industrial use include little material waste, simple manufacturing, minimal human participation, minimal post-processing, and energy efficiency. In this study, we provide insights on the development of 3D printing, its history, current state, uses, and potential future directions. There is a detailed explanation of various materials that work with each sort of 3D printing procedure. Â© 2024 IEEE.
A 1.8 v 11.02 Î¼w single-ended inverter-based OTA with 113.62 dB gain
(Institute of Electrical and Electronics Engineers Inc., 2016) Kaliyath, Y.; Laxminidhi, T.
This paper presents a low power 1.8 V single-ended operational trans conductance amplifier (OTA) with a very high dc gain targeted for audio applications. Cascoding and gain boosting are employed to achieve the high gain. The amplifier is implemented in UMC 180 nm CMOS technology. For a typical process corner, the amplifier provides a dc gain of 113.62 dB and a unity gain bandwidth of 2.49 MHz at 62.9Â° phase margin with capacitive load of 2.5 pF. The amplifier consumes only 6.12 Î¼A of quiescent current from 1.8 V supply. The amplifier exhibits good performance across all the process corners with the use of body bias technique. Â© 2016 IEEE.
A 1.8 V 8.62 µW Inverter-based Gain-boosted OTA with 109.3 dB dc Gain for SC Circuits
(Taylor and Francis Ltd, 2019) Kaliyath, Y.; Laxminidhi, T.
This paper presents a low-power inverter-based gain-boosted operational transconductance amplifier (OTA) for switched capacitor (SC) circuits operating at higher supply voltage (>1 V). The proposed OTA is implemented using UMC 180 nm CMOS technology with a supply voltage of 1.8 V and it offers a high dc gain with a unity gain bandwidth (UGB) suitable for audio applications. All the transistors of the proposed OTA are operated in sub-threshold region to minimize the power consumption. Gain-boosting technique is employed to achieve a higher dc gain. The post-layout simulations demonstrate the robust performance of the proposed OTA, which delivers a high dc gain of 109.3 dB and a UGB of 5.29 MHz at 81° phase margin (PM) with a capacitive load of 2.5 pF for a typical process corner at room temperature (27°C). The proposed OTA draws a quiescent current ((Formula presented.)) of 4.79 µA, resulting in a power consumption of 8.62 µW. © 2019, © 2019 IETE.
A survey on wireless sensor network (applications and architecture)
(Inderscience Publishers, 2024) Mahapatra, R.K.; Kaliyath, Y.; Shet, N.S.V.; Mahapatro, S.R.; Satapathi, G.S.; Prusty, S.B.; Patro, B.S.
Proliferation of the wireless sensor network is due to the advancement in wireless networks, information technologies, miniaturisation of sensors as well as convergence of MEMS technology, wireless communication and digital electronics. These wireless networks interface the physical world to the computing (virtual) world. In recent years, the availability of smaller, cheaper and intelligent sensors on a large scale has motivated the deployment of sensors in various applications such as smart city, smart home, smart grid, automated vehicles, etc. The sensor plays an important role in internet of things. This survey reports current research activities, applications, characteristics, architecture and case study of WSNs. In addition to this open research issues/problems are discussed. The aim is to present a comprehensive study of the literature on several aspects of wireless sensor network such as application and architecture. © 2024 Inderscience Enterprises Ltd.
Design and Analysis of Microstrip Wideband Filter
(Institute of Electrical and Electronics Engineers Inc., 2023) Mahapatra, R.K.; Kaliyath, Y.; Shet, N.S.V.; Satapathi, G.S.; Manjukiran, B.; DImri, P.; Shetty, A.N.; Srichandan, R.; Patro, B.S.; Senapati, A.
This paper deals with the study on conventional wideband bandpass filter (BPF) and the bandpass filter designed using the split ring resonator structure. The proposed design using the SRR consists of 3 SRR on which the filter is mounted. This is designed using the HFSS software. The material with in the dielectric constant of 4.36 and the loss tangent of 0.01 is used for the substrate material. The substrate height is varied with the dimension of 4.9 x 2.9 kept constant. The result observed for the BPF on SRR with increase substrate height has shown better results better return loss characteristics as compared to the other design. Â© 2023 IEEE.
High notch microstrip antenna array at Ka band
(Institute of Electrical and Electronics Engineers Inc., 2023) Mahapatra, R.K.; Kaliyath, Y.; Satapathi, G.S.; Shet, N.S.V.; Patra, J.P.; Manjukiran, B.; Rai, S.J.; Athmiya Raj, A.G.; Durgesh; Rai, H.
This paper presents the experimental research and design for microstrip patch array antenna which resonates in Ka band. The proposed design consists of 4 microstrip rectangular patches. HFSS software is used for the simulation and analysis with four candidate structure. A material having a dielectric constant of 4.36 is used for the substrate material with the low loss tangent of 0.01. The dimension of the patches are varied to achieve better result. Design of all the antenna were within the range of 28 to 40 GHz. Designed Antenna exhibit the bandwidth range within 2.925 GHz to 7.7 GHz. By adjustment of the size of the patch i.e length, width and height, an appreciable gain within 9.62 dB to 9.98 dB was observed within the proposed design. The proposed antenna array will be able to scaled to a larger radiating structure. Â© 2023 IEEE.