Krishna Kanth Varma Penmatsa

ORCID: 0000-0003-2626-5288
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Research Areas
  • Antenna Design and Analysis
  • Microwave Engineering and Waveguides
  • Antenna Design and Optimization
  • Energy Harvesting in Wireless Networks
  • Advanced MIMO Systems Optimization
  • Advanced Data Compression Techniques
  • Digital Filter Design and Implementation
  • Advanced Antenna and Metasurface Technologies
  • Wireless Body Area Networks
  • Image and Signal Denoising Methods
  • Metamaterials and Metasurfaces Applications
  • Algorithms and Data Compression
  • Stock Market Forecasting Methods
  • Image Enhancement Techniques
  • Forecasting Techniques and Applications
  • Neural Networks and Applications
  • Distributed and Parallel Computing Systems
  • Energy Load and Power Forecasting
  • Bluetooth and Wireless Communication Technologies
  • Plasmonic and Surface Plasmon Research
  • Mobile Ad Hoc Networks
  • Advanced Adaptive Filtering Techniques
  • Blind Source Separation Techniques
  • Radio Wave Propagation Studies
  • Parallel Computing and Optimization Techniques

SRKR Engineering College
2018-2024

Amrita Vishwa Vidyapeetham
2024

SRM University, Andhra Pradesh
2018-2022

Acharya Nagarjuna University
2020

Virginia Tech
2003-2008

Jensen Hughes (United States)
2008

Tata Consultancy Services (India)
2004

In this communication, a planar dual port multiple input output antenna of size 1.2λ0 × 0.6λ0 0.008λ0 with LHCP/RHCP features is reported for the fifth-generation new radio n77/n78 sub-6 GHz wireless applications band. The single unit proposed design consists modified L-shape rectangular radiator Z-shape slot loaded DGS. defected ground structure optimized through machine learning algorithms to achieve maximum ARBW (output) by Right Shifting (RS) and left shifting (LS) DGS obtaining...

10.1038/s41598-023-41302-2 article EN cc-by Scientific Reports 2023-08-26

A new and improved image coding standard, called JPEG2000, has been developed. JPEG2000 is the state-of-the-art standard that results from joint efforts of International Standards Organization (ISO) Telecommunications Union. In this article, we describe most important parameters present several "tips tricks" to help resolve design tradeoffs application developers are likely encounter in practice. The outperforms older JPEG by approximately 2 dB peak signal-to-noise ratio (PSNR) for images...

10.1109/msp.2004.1359144 article EN IEEE Signal Processing Magazine 2004-11-01

A 4-port MIMO antenna with a novel isolator structure for sub-1GHz/sub-6GHz and RF-energy harvesting applications is presented in this research. The proposed investigated systematically at 2.6 GHz design frequency four distinct stages: STEP-1, STEP-2, STEP-3 STEP-4 an optimal (STEP-4: 0.5λ×0.7λ×0.014λ mm3) chosen further study. unique isolation was developed between two identical elements separated by 0.077λ, resulting improved of greater than 14 dB 0.9 18 obtained. suggested resonates 900...

10.1080/09205071.2023.2224081 article EN Journal of Electromagnetic Waves and Applications 2023-06-21

Embedded block coding, i.e., embedded coder with optimal truncation (EBCOT) tier-1, is the most computationally intensive part of JPEG2000 image coding standard. Past research on fast EBCOT tier-1 hardware implementations has concentrated cycle-efficient context formation. These pass-parallel architectures require that JPEG2000's three mode switches be turned on; thus, efficiency sacrificed for improved throughput. In this paper, a new design presented: It called split arithmetic encoder...

10.1109/tcsi.2008.927221 article EN IEEE Transactions on Circuits and Systems I Regular Papers 2008-12-01

Cross-correlation based time delay estimates (TDE) can be used for direction-of-arrival (DOA) estimation with an acoustic array in not-too-reverberant environments. In order to benefit from the computational efficiency of TDE-based DOA estimation, and concentrating on applications that use a compact microphone low sampling frequency, we combination approaches make more robust under reverberant conditions. interpolation Goertzel algorithm is generalized cross-correlation TDE as well...

10.1109/sam.2002.1191031 article EN 2003-10-15

Summary This communication presents a compact field de‐correlation lines integrated dual band with dual‐polarized (LP & CP) multiple‐input multiple‐output (MIMO) antenna for the fifth generation (5G) sub‐6‐GHz wireless systems. Dual working bandwidths, smaller interelement gaps, and superior isolation within MIMO components are distinguishing characteristics that give proposed system an aspect of novelty. The modeled has configurations 20 × 21 0.8 mm 3 . unit cell consists microstrip...

10.1002/dac.5460 article EN International Journal of Communication Systems 2023-02-22

A slotted log periodic dipole antenna with Giuseppe Peano fractal geometry applied on edges is proposed for multiband operation. The design has been fabricated FR4 epoxy substrate a loss tangent of 0.02withdimensions 48mm x 82mm 1.6mm. designed resonates at seven resonant frequencies 2.2GHz, 2.54GHz, 3.5GHz, 4.94GHz, 6.02GHz, 7.36GHz and 9.98GHz. -10dB bandwidths obtained are 220MHz, 160MHz, 140MHz, 230MHz, 400MHz 910MHz respectively. achieves directional radiation pattern in end fire...

10.1109/icatcct44854.2018.9001920 article EN 2018-09-01

Bluetooth (BT) mesh networks are used in several ad hoc network communication scenarios, including natural disasters, calamities, war zones, etc. However, there situations where misused by anti-social elements during riots As of now no such research article that showcases detection BT using machine learning tools. Therefore, is a need to build novel methods for detecting the very presence aid law enforcement agencies. This paper contributes building new dataset tools detect networks. The...

10.1016/j.procs.2024.03.247 article EN Procedia Computer Science 2024-01-01

Abstract In this communication, the conceptualization involves design of a multiple input output (MIMO) (dual-port) ring dielectric resonator antenna and integration meta-surface onto configuration. It introduces three distinctive attributes, which characterize novelty proposed design: (a) facilitates conversion linearly polarized waves into circularly counterparts; (b) contributes to substantial enhancement in gain between working band; (c) there is notable improvement isolation ports more...

10.1088/1402-4896/ad4eac article EN cc-by-nc-nd Physica Scripta 2024-05-21

10.1109/icccnt61001.2024.10725949 article EN 2022 13th International Conference on Computing Communication and Networking Technologies (ICCCNT) 2024-06-24

The JPEG2000 standard includes a perceptual weighting method based on the contrast sensitivity function (CSF). Recent literature shows that methods subband deviation are also effective in image compression. We present two new combine information from both human as well within or code-block. compare these sets of weights to CSF weights. results indicate our performed better than for high frequency images. Weights solely shown perform worse all images at compression ratios.

10.1109/icassp.2004.1326632 article EN IEEE International Conference on Acoustics Speech and Signal Processing 2004-09-28

This paper concentrates on bandwidth enhancement of antenna using square Koch fractal (SKF) and Babinet's principle. A quadband transmission line feed tortoise shaped microstrip patch with optimized self - similar slotted ground structure is proposed for C band (4-8GHz) Ku (12-18GHz) applications. The overall size 33mm×28mm×1.6mm. operates at 4.12GHz (f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> ), 5.92GHz...

10.1109/iccci50826.2021.9402698 article EN 2022 International Conference on Computer Communication and Informatics (ICCCI) 2021-01-27

Embedded block coding (EBCOT Tier-1) is the most computationally intensive part of JPEG2000 image standard. Past research on fast EBCOT Tier-1 hardware implementations has concentrated cycle-efficient context formation, and achieve improved throughput at cost reduced efficiency. In this paper, a new design called Split Arithmetic Encoder (SAE) process presented. The proposed exploits concurrency to obtain with lower penalty in for complete process, considers system-level issues such as need...

10.1145/1127908.1127970 article EN 2006-04-30

A hybrid fractal antenna inspired from sri yantra geometry covering multiple bands in the microwave frequency spectrum is presented this paper with a reduced size of 45mm x 30mm 1.6mm. The design aims at multiband polygon slots in- scribed circular patch defected ground structure and effect Sri Yantra iterations on characteristics are also studied. gains achieved respective for 4.61dB 4.04GHz, 2.71dB 4.94GHz, 4.77dB 5.88GHz, 3.41dB 6.60GHz, 5.12dB 7.24GHz, 3.11dB 8.88GHz 3.47dB 10.92GHz.

10.14419/ijet.v7i3.31.18197 article EN International Journal of Engineering & Technology 2018-08-24

This paper presents a novel rhombus-shaped patch antenna with right angled isosceles triangle fractal. resembles diamond shape by etching and merging the square slot, apart from being fed coplanar waveguide structure. has compact size, measuring 40mm x 65mm 1.6mm. The final prototype resonates at 4.66GHz, 6.12GHz, 8GHz 8.88GHz 150MHz, 360MHz, 300MHz 220MHz bandwidths, respectively. stable omni-directional E-plane radiation patterns their operating bands. proposed is suitable in cases, where...

10.1109/icatcct44854.2018.9001933 article EN 2018-09-01

In this communication, a compact wideband anti-parellel 2-port T shaped MIMO antenna suitable for sub-6 GHz 5G applications is designed and analyzed with an 3.2–4.3 operational bandwidth. The initial entity of the proposed configuration consists T-shape radiating element C shape ground plane on same side dielectric materials. 2- port module achieved by taking mirror image single about x-axis. To justify behavior as antenna, various antenna/diversity parameters are calculated observed...

10.1109/iccci54379.2022.9740767 article EN 2022 International Conference on Computer Communication and Informatics (ICCCI) 2022-01-25
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