iosr-JECE   Volume-16 ~ Issue-6 ~ Nov.-Dec. 2021

Abstract: This article presents rectangular microstrip antennas in modified fractal geometries. The modified fractal antennas are designed using the HFSS, which is based on the finite element method of computational electromagnetics. Three forms of the designed antennas is discussed and the various electrical parameters such as reflection coefficient, 2 D radiation pattern and 3 D radiation pattern are investigated. The designed antennas have various wireless applications such as 1.8 GHz GSM and 2.4 GHz WLAN and IEEE 802.11(a, b ,g and n).The designed antennas also have wideband behavior with the multiband applications.

Keywords: Micro strip patch antenna, Fractal, WLAN

[1]. Garg, R., P. Bhartia, I. Bahl, and A. Ittipiboon, Microstrip Antenna Design Handbook, Artech House.
[2]. Constantine A. Blanis, Antenna Theory Analysis and Design Third Edition wiley India 2005.
[3]. Zhang, Y. P. and J. J. Wang, "Theory and analysis of differentially-driven microstrip antennas," IEEE Trans. Antennas Propag., Vol. 54, 1092-1099, 2006.
[4]. Pozar, D. M. and D. H. Schaubert, Microstrip Antennas, the Analysis and Design of Microstrip Antennas and Arrays, IEEE Press, New York, 1995.
[5]. H Sabri and Z Atlasbaf "Two novel compact triple band microstrip annular ring slot antenna for PCS-1900 and WLAN application". PIERS letters vol 5,87-98, 2008.

Abstract: Electrocardiogram (ECG)is a non-invasive technique used mainly as a primary diagnostic tool for cardiovascular diseases. A pure ECG signal provides valuable information about the electrophysiology of heart diseases and the occurrence of ischemic changes. It provides necessary information about the functional aspects of the heart and cardiovascular system. The objective of this report is to automatically detect the cardiac problems in ECG signal. Recently developed digital signal processing technique is used in this report for the detection of cardiac problems. Hence this report develops a method for analysis of heartbeats to detect cardiac abnormalities in ECG signals. ECG generated waveforms are used to find patterns of irregularities in cardiac cycles in patients. In many cases, irregularities evolve over an extended period of time that requires continuous monitoring. However, this requires compression of ECG signals. The practical importance of ECG data compression has become evident in many aspects of computerized electrocardiography. Various ECG compression methods are discussed.

Keywords: Ambiguity domain, Ramanujan Fourier Transform, Ramanujan sums, Time-frequency, T wave alternanace.

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[3]. G. Berntson, J. Bigger, D. Eckberg, P. Grossman, P. Kaufmann,M.Malik,H. Nagaraja, S. Porges, J. Saul, P. Stone, and M. vander Molen, "Heart rate variability: Origins, methods, and interpretive caveats, "Psychophysiology, vol. 34, no. 6, pp. 623{648, Nov. 1997.
[4]. F. Mormann, R. G. Andrzejak, C. E. Elger, and K. Lenhn-ertz, "Seizure prediction: the long and winding road," Brain, vol. 130, no. 2, pp. 313-333, 2006.
[5]. R. Silipo, G. Deco, R. Vergassola, and C. Gremigni, "A characterization of HRVs nonlinear hidden dynamics by means of Markovmodels,"IEEE Trans. Biomed. Eng., vol. 46, no. 8, pp. 978-986, Aug. 1999.

Abstract: The use of single wideband antenna which covers wide range frequencies is very desirable for many applications including wireless and high data rate communications, imaging and sensing, position and tracking and radar. Here the realization of the planar monopole antenna which can works at different frequencies with good radiation was presented. The design a broadband monopole planar rectangular antenna that is printed on printed circuit board (PCB) consisted of a rectangular patch and a ground plane. Besides mathematical procedure, the step in designing this antenna needed a simulation to get more accurate hypothesis before realizing the antenna. In this study, researcher applied Matlab that can be used for designing and simulating the antenna in more detail and....

Keywords: Broadband Rectangular Planar Monopole Antenna, Planar Monopole Antenna, Matlab

[1]. Ahmad and Jar'alla, "Design and Simulation of Broadband Rectangular Microstrip Antenna". Eng. Tech Vol. 26 No.1, 2008s.
[2]. Azari. A and Rowhani. J, "Ultra Wideband Fractal Microstrip Antenna Design" , Electromagnetic Reseach C , Vol 2,2008, P. 7-12
[3]. Azim, Tariqul and Misran, "Compact Planar Antenna for UWB Applications", International Review of Electrical Engineering 5 (4) , pp. 1848-1852, 2010.
[4]. Balanis, C.A, "Antenna Theory: Analysis and Design", John Wiley and Son, New Jersey, 2005.
[5]. Dubost &Zizter, "Antennas a Large Band", Masson, Paris, 1976, P. 128-129.

Abstract: This research aims to determine the usefulness of control components in operating Android-based Airfield Lighting System equipment with ON/OFF conditions and how to design android-based ON/OFF Airfield Lighting System operating controls. In the process of designing control Airfield Lighting System, this study carried out several stages, namely research identification, a research plan as a process of observation of data, analysis as the first step of collecting and preparing data, design as a stage of development after conducting analysis, and implementation as a result of research that has been designed that will conduct testing. The study results on the.....

Keywords: Control, NodeMCU, Airfield Lighting System

[1] Bumiller, G., and Pirschel, N., 2003. Airfield ground lighting automation system realized with power line communication. In Proc. 8th Int. Symp. Power Line Commun. Appl (pp. 16-20).
[2] Sudjoko, R. I., and Hariyadi, S., 2021. Design and Simulation of Airfield Lighting System Using 8 Luminaire in Airfield Lighting Laboratory at Politeknik Penerbangan Surabaya. In Journal of Physics: Conference Series (Vol. 1845, No. 1, p. 012034). IOP Publishing.
[3] Decree of the Director General of Transportation Number SKEP/114/VI/2002 concerning Standard Drawings for Airport Lighting Installations (Airfield Lighting System). Retrieved August 24, 2021, at 10.15 am.
[4] Almomani, I. M., & Al Khayer, A. (2020). A comprehensive analysis of the android permissions system. IEEE Access, 8, 216671-216688.
[5] Sadiq, S., Umer, M., Ullah, S., Mirjalili, S., Rupapara, V., and Nappi, M. 2021. Discrepancy detection between actual user reviews and numeric ratings of Google App store using deep learning. Expert Systems with Applications, 181, 115111.

Abstract: The influence of interconnecting cables on an audio system's performance is a controversial issue. This is partly because commonly measured parameters such as resistance, reactance, frequency response, and common distortions do not show meaningful differences. The present electrical study of line-level single-ended (unbalanced) analog interconnects, provides a more comprehensive picture surpassing the common specifications. It was found that uncommon time-domain effects such as reflection sequences and non-ideal capacitive behavior, along with noise, can better distinguish the electrical performance of interconnects of different grades.

Keywords: High-end audio; High fidelity; Hifi; Hi-fi; Cables; Interconnects; Psychoacoustics

[1]. M. N. Kunchur, "Cable Pathways Between Audio Components Can Affect Perceived Sound Quality," J. Audio Eng. Soc., vol. 69, no. 6, pp. 398–409, (2021 June). DOI: https://doi.org/10.17743/jaes.2021.0012
[2]. H. R. E. van Maanen, "Temporal Decay: A Useful Tool for the Characterization of Resolution of Audio Systems?" presented at the 94th Convention of the Audio Engineering Society (1993 Mar.), paper 3480.
[3]. H. R. E. van Maanen, "Requirements for Loudspeakers and Headphones in the 'High Resolution Audio' Era," in Proceedings of the 51stInternational Conference: Loudspeakers and Headphones (2013 Aug.), paper 1-3.
[4]. H. R. E. van Maanen, "Is Feedback the Miracle Cure for High-End Audio?" (2017 May). https://www.temporalcoherence.nl/cms/images/docs/FeedbackHvM.pdf.
[5]. W. Woszczyk, "Physical and Perceptual considerations for High-Resolution Audio," presented at the 115th Convention of the Audio Engineering Society (2003 Oct.), paper 5931

Abstract: The efficient accumulation, conveyance, segregation and disposal of garbage play a vital role in efficacious waste management. Segregation at source level itself impacts more truncation of landfills. According to a survey conducted in the city of Ahmedabad, due to infelicitous amassment and segregation of garbage at source level by the door-to-door van collector, there arises quandary of segregating them at different wards as well as increase in landfills. This paper suggests an architecture which will intimate the AMC ascendant entities about the incongruous amassment and segregation of garbage at source. Humidity sensor and MQ4 gas sensor is utilized in order to detect the level of the humidity and methane gas accumulated in the dry as well as wet container. Arduino Nano is utilized in order to detect that the dry garbage in accumulated in the dry container and wet garbage is accumulated in the wet container. Sim800L module will transmit the data to the server to be exhibited to the ascendant entities.

Keywords: Waste, Door-to-Door Van, AMC, segregation, containers and sensors

[1]. Amdavad Muncipal Corporation, https://ahmedabadcity.gov.in/portal/jsp/Static_pages/solid_waste_mgmt.jsp
[2]. J.T sheth, K. patel, D. Shah A Case Study of Ahmedabad, IJSRD, "Habitat Conclave 2016", Paper presentation on "Smart & Sustainable City"|| ,February 2016.
[3]. Nithya. Nadar, S. Sonar, A Survey report on Waste Segregation in Ahmedabad City, International Journal of Scientific and Technology Research (IJSTR) ISSN 2277-8616 ,2019.
[4]. S.Kumar,P. Tyagi, M. Zymbler, Internet of Things is a revolutionary approach for future technology enhancement: a review, Kumar et al. J Big Data ,2019 ,6:111
[5]. C. K Singh , A. Kumar , S.S Roy, Quantitative analysis of the methane gas emissions from municipal solid waste in India, http://www.nature.com/scientificreports ,Feb 2018.