Professor Sudath R D Kalingamudali

Professor Sudath R D Kalingamudali BSc (Kelaniya), PhD (Sheffield), CSci, CEng, CPhys, FIET, FInstP, FIP (SL),MIEEE
Dean of the Faculty and Senior Professor
Project Director of the Solar Edu-Training Project,Ministry of Science, Technology and Research.
Chairman, Sports Advisory Board.

Specialized Field	:	Semiconductor Devices/Electronics
Email Address	:	deansc@kln.ac.lk, kalinga@kln.ac.lk
Telephone No	:	+94 (0)11 2 903 200 (ext: 200)
		+94 (0)11 2 976 600 (Residence)
		+94 (0)71 2 510 646 (Mobile)
		+94 (0)76 7 710 646 (Mobile)
Office Location	:	B1 332/3
Teaching	:	Electronics

Google Scholar | Researchgate | ORCiD

Research Interests

Designing and developing of new electronic circuits for various applications.

Selected Publications

PLAK Piyumal, ALAK Ranaweera, SRD Kalingamudali and N Kularatna, In book: Supercapacitor-Assisted Converter Techniques for Implementing Highly Efficient and Self-sustained Off-grid Renewable Energy Systems, National Science and Technology Commission of Sri Lanka, Battaramulla pp. 208-229 (2023) LDPS Jayasekara, TN Gurusinghe, HE Wijesooriya, JA Seneviratne, ALAK Ranaweera, KMDC Jayathilaka, LBDRP Wijesundera and SRD Kalingamudali, *Smart System Using Lora Technology to Connect Rural Areas Underserved By Existing Internet and Telecommunication Technologies, ECS Transactions 107 (1), 17731 (2022) PLAK Piyumal, ALAK Ranaweera, SRD Kalingamudali and N Kularatna, Maximum Power Point Tracking of an Off-Grid Photovoltaic System Consisting of a Series Connected Supercapacitor with a Step-Down Converter, ECS Transactions 107 (1), 16233 (2022) TT Manilgama, RMIU Rajapaksha, SRD Kalingamudali, KN Seneviratne and Nimanthi Jayathilaka, Vacuum manifold for column-based solid-phase extraction, 1^st Scientific and technology conference 2021, Republic of Rwanda (2022) K Piyumal, A Ranaweera, S Kalingamudali and N Kularatna, Maximum Power Point Tracking of a Standalone Photovoltaic System Consisting of a Series Connected Supercapacitor, SPAST Abstracts, 1 (01) (2021) Kasun Piyumal, Aruna Ranaweera, Sudath Kalingamudali and Nihal Kularatna, Supercapacitor Assisted Hybrid PV System for Efficient Solar Energy Harnessing, Electronics 10 (19), 2422 (2021) USRH Fernando, ALAK Ranaweera, SC Chandrarathna and SRD Kalingamudali, Design and Implementation of Low Drop Diode Equivalent (LDDE) Circuits for Piezoelectric Energy Harvesting, Proc. 76^th Annual Sess., SLAAS, p. 152 (2020) GDK De Silva, PLAK Piyumal, ALAK Ranaweera and SRD Kalingamudali, Supercapacitor Assisted Wireless Chargers for Moving Electric Vehicles, accepted for a presentation in the 76th Annual Sess., SLAAS (2020) LDPS Jayasekara, PLAK Piyumal, ALAK Ranaweera and SRD Kalingamudali, Efficiency Optimization of Supercapacitor Assisted Low Dropout (SCALDO) Regulators, accepted for a presentation in the IEEE Region 10 Humanitarian Technology Conference (R10 HTC) 2020, which will be published in IEEE Xplore Digital library DGDD Jayawardana, ALAK Ranaweera, SRD Kalingamudali, Design and characterization of a parametric speaker using Pulse Width Modulation method, Proceedings of the International Conference on Applied and Pure Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, p. 57 (2020) HPM Udayanga, RT Seneviratne, SAR Geethal, WVI U Kumara,ALAK Ranaweera and SRD Kalingamudali, Design of an Automated Power Sourcing Unit to Optimize the Operating Schedule of Industrial Loads, Proceedings of the International Conference on Advanced in Computing and Technology 2020, Indexed in IJIFACTOR Master Lis PLAK Piyumal, ALAK Ranaweera, SRD Kalingamudali and N Kularatna, Analysis of Impedance Matching Technique for Novel Supercapacitor Assisted PV Systems, Proc. 46th Annual Conference of the IEEE Industrial Electronics Society (IES) IECON 2020, to be published in IEEE Xplore Digital library RMIU Rajapaksha, PSH Perera, PKDM Nandasena, PSTK Gunarathna, PPD Gihan Kanishka, ALAK Ranaweera, SRD Kalingamudali, Design of an Auto Disconnecting Regulator and Safety Switch to Prevent Domestic Gas Leakages, Proc. International Research Conference on Smart Computing and Systems Engineering, pp. 57-61 (2020) to be published in IEEE Xplore Digital library RMDM Rajapaksha, SS Dhananjaya, MWASH Wijesuriya, KMS Fernando, ALAK Ranaweera, SRD Kalingamudali, Design and implementation of automated heat shrink cutting process for industrial usage, Proc. 4^th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, p. 219 (2019) PLAK Piyumal, ALAK Ranaweera, SRD Kalingamudali and N Kularatna, Novel slow switching technique for efficient solar energy harnessing for off grid photovoltaic systems, Proc. 4^th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, p. 101 (2019) SBMSS Gunarathne and SRD Kalingamudali, Smart Automation System for Controlling Various Appliances Using a Mobile Device, IEEE Xplore, pp. 1585-1590 (2019) PLAK Piyumal, ALAK Ranaweera, SRD Kalingamudali and Nihal Kularatna, Improving the Energy Storage of Standalone PV Systems while Enhancing the Charging Efficiency using Supercapacitors, IEEE Xplore, pp. 486-490 (2019) PLAK Piyumal, ALAK Ranaweera, SRD Kalingamudali and Nihal Kularatna, Novel Approach for Harnessing Maximum Energy from PV Systems using Supercapacitors, IEEE Xplore, pp. 1-6 (2018) RMIU Rajapaksha, PSH Perera, PKDM Nandasena, EPGTK Gunarathna, Gihan Kanishka, ALAK. Ranaweera and SRD Kalingamudali, Design and Implementation of Smart Standalone Gas Fire Security System for Domestic Usage, Proc. 19th Conference on Postgraduate Research 2018, University of Kelaniya, pp. 65 (2018) PLAK Piyumal, ALAK Ranaweera, SRD Kalingamudali and N Kularatna, Supercapacitor based novel approach for efficient solar energy harnessing, Proc. 3^rd International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, p. 103 (2018) HBH De Zoysa, PA Guruge, SRD Kalingamudali, Nihal Kularatna and Gihan Kanishka, Designing and Constructing a DC Microgrid with Uninterrupted Power Supply Capability and Optimizing its Energy Usage by Smart Controlling System, IEEE Xplore, pp. 351-356 (2018). BNP Cooray, WSK Perera and SRD Kalingamudali, Simultaneous control of multiple line-loads each connected separately in series with a designed unit (Control using Radio Frequency and a Mobile device),* IEEE Xplore, pp. 318-323 (2016). JAK Maduranga, SRD Kalingamudali and KPSC Jayaratne, Effects of lightning and possible health hazards due to the erection of telecommunication towers, Proc. Wayamba University International Conference, p. 248 (2016) WSK Perera and SRD Kalingamudali, *Remotely Controllable Regulator Connected in Series with Resistive and Inductive Loads, Proc.31^st Tech. Sess. Inst. Phys., Sri Lanka, pp. 23-28 (2015) KDBH Gunawardana and SRD Kalingamudali, Remotely Controllable Regulator for Line-loads, Proc. 30^th* Tech. Sess. Inst. Phys., Sri Lanka, pp. 89-95 (2014) SRD Kalingamudali, *Acoustic Charge Transfer Devices, Presidential Address, 29^th Tech. Sess. Inst. Phys., Sri Lanka (2013) HMSKB Kotakadeniya, SRD Kalingamudali and G Bulathsinghala, Challenges of defending maritime domain of Sri Lanka, Proc. 13th Annual Research Symp. 2012, University of Kelaniya, pp. 87-88 (2012) MDGM Abeyratne, IU Kalupahana, WAP Buddhika, SD Kumara, NWK Jayatissa, LBDRP Wijesundera, JC. Harambearachchi, and SRD Kalingamudali, An Inexpensive Universal Serial Bus Interfaced Home Automation System, Proc. IET Nineteenth* Annual Technical Conference, Sri Lanka (2012) SRD Kalingamudali, H Shao, RC Woods, R Neelam and V Singh, *Pentacene acoustic charge transfer devices, 2011 LSU-CAMD User Meeting, Baton Rouge, USA (2011) SRD Kalingamudali and NYJB Nikapitiya, Designing of an Economical Computer Interfaced Current Source, Proc. 9th Annual Research Symp. 2008, University of Kelaniya, p. 119 (2008) SRD Kalingamudali and AMR Jayasingha, Designing of an inexpensive GPIB interfaced voltage source, IEEE Xplore Release 2.4,* pp.75-78 (2006) SRD Kalingamudali, JC Harambearachchi , LSR Kumara, JHSR De Silva, DDF Piumwardena, LDL De Silva, LT Abeynanda, KHGG Chameera, DP Dissanayake, AMCR Attenayake and SAGN Molligoda, *Pedestrian and vehicular traffic friendly uninterrupted solar powered traffic signal light system, IEEE Xplore Release 2.4,* pp. 208-210 (2006) SRD Kalingamudali, JC Harambearachchi , LSR Kumara, JHSR De Silva, RMCRK Rathnayaka, G Piyasiri, WAN Indika, MMAS Gunarathne, HADPSS Kumara and MRDB Fernando, *Remote controlling and monitoring system to control electric circuitry through SMS using a microcontroller, IEEE Xplore Release 2.4, pp. 378-382 (2006) KH Kumara, L Munasinghe, KD Jayasuriya, NGJ Dias, CH De Silva and SRD Kalingamudali,Design and implementation of a WEB-based faculty information system, Proc. 7th Annual Research Symp. 2006, University of Kelaniya, p. 66 (2006) SRD Kalingamudali, Development of electronics from vacuum tubes to integrated circuits, Science to Society (YSF Science Magazine, NASTEC), pp. 4-5 (2004) AWS Chandana, SRD Kalingamudali, RP Wijesundara and KD Jayasuriya, Design of an Inexpensive Digital Watt-hour Meter, Proc. IEE Tenth* Annual Conference, Sri Lanka (2003) ML Kalingamudali and SRD Kalingamudali, *Advantages of the use of Solar Cells and Light Emitting Diodes (LED) for Traffic Signal Lights for the current power crises in Sri Lanka, Proc. IEE Ninth* Annual Conference, Sri Lanka (2002) GS Dedigamuwa and SRD Kalingamudali, *Electronic Scoreboard for Basketball game, Proc. 18^th* Tech. Sess. Inst. Phys., Sri Lanka, pp. 37-43 (2002) SRD Kalingamudali and W Siripala, *Observation of defect interface states at the Cu₂O/Cu_xS junction using thermally stimulated I-V measurements, Sri Lankan Journal of Physics 2, pp. 7-12 (2001) RP Wijesundara, NP Gunatunga, W Siripala, KD Jayasuriya, SRD Kalingamudali, KTL De Silva and JKDS Jayanetti, Fabrication and Characterisation of CuInS₂/ZnSe/Metal Structures for Solar Cell Applications, Proc. 16^th* Tech. Sess. Inst. Phys., Sri Lanka, pp. 63-70 (2000) RP Wijesundara, W Siripala, KD Jayasuriya and SRD Kalingamudali, *Sulphurisation of sequentially electrodeposited Cu-In alloy for the preparation of semiconductor thin films, Proc. Annual Research Symp. 2000, University of Kelaniya, p. 32 (2000) RP Wijesundara, W Siripala, KD Jayasuriya and SRD Kalingamudali, I-V and C-V characterization of semiconductor thin films, Proc. Annual Research Symp. 2000, University of Kelaniya, p. 31 (2000) RP Wijesundara, MP Nadesalingam, W Siripala, KD Jayasuriya, SRD Kalingamudali, JKDS Jayanetti and KTL De Silva, A study of CuInS₂ thin films for photovoltaic applications, Proc. 15^th* Tech. Sess. Inst. Phys., Sri Lanka, pp. 52-58 (1999) WMPI Wijesinghe, W Siripala, KD Jayasuriya and SRD Kalingamudali, *A computational study of IV characteristics of ITO/Cu₂O/Metal junctions, Proc. 15^th* Tech. Sess. Inst. Phys., Sri Lanka, pp. 35-42 (1999) RP Wijesundara, W Siripala, KD Jayasuriya, SRD Kalingamudali, KTL De Silva, JKDS Jayanetti, AP Samantilleke and IM Dharmadasa, *Growth and characterisation of CuInS₂ thin films, Proc. Wkshp. Low Cost Elect. Mat. and Solar Cells, Peradeniya, Sri Lanka, pp. 40-45 (1999) RP Wijesundara, W Siripala, KD Jayasuriya, SRD Kalingamudali, KTL De Silva, and JKDS Jayanetti, Photoelectrochemical Characterisation of ZnSe coated Copper Indium Sulphide Thin Film Electrodes, Proc. 55^th* Annual Sess., SLAAS, p. 203 (1999) RP Wijesundara, SRD Kalingamudali and KD Jayasuriya, *Construction of a near ideal sensitive nanoammeter, Proc. 14^th* Tech. Sess. Inst. Phys., Sri Lanka, pp. 50-53 (1998) SRD Kalingamudali, AC Wismayer, RC Woods and DR Wight, *Perimeter and bulk recombination currents in GaAs homojunction diodes and GaAs/AlGaAs heterojunction bipolar transistors after surface processing,Solid-St. Electron. 41, pp. 417-422 (1997) LDRD Perera, W Siripala, SRD Kalingamudali, JKDS Jayanetti and KTL De Silva, IV characteristics of ITO/Cu₂O/metal junctions, Proc. 52^nd* Annual Sess., SLAAS, pp. 160-161 (1996) SRD Kalingamudali, RC Woods and AC Wismayer, *New experimental interpretation for the emitter-size effect of AlGaAs/GaAs heterojunction bipolar transistors, Proc. Cond. Matter and Mat. Phys. Conf., p. 134, Liverpool, United Kingdom (1995) SRD Kalingamudali, Edge leakage effects in AlGaAs/GaAs heterojunction bipolar transistors, PhD Thesis, Department of Electronic and Electrical Engineering, The University of Sheffield, United Kingdom (1994) SRD Kalingamudali, AC Wismayer and RC Woods, Recombination current reduction in AlGaAs/GaAs heterojunction bipolar transistors with polyimide deposition, Solid-St. Electron. 37, pp. 1977-1982 (1994) SRD Kalingamudali, AC Wismayer, RC Woods and JS Roberts, Current gain increase in AlGaAs/GaAs heterojunction bipolar transistors using AlGaAs layer overgrowth, Appl. Phys. Lett. 65 (11), pp. 1403-1405 (1994) SRD Kalingamudali, AC Wismayer and RC Woods, Experimental evaluation of separate contributions to ideality factor for the base surface recombination current in heterojunction bipolar transistors, Materials Science and Engineering B28, pp. 238-241 (1994) SRD Kalingamudali and W Siripala, Thermally stimulated current voltage characteristics of Cu₂O/Cu_xS diode, Proc. 44^th* Annual Sess., SLAAS, p. 152 (1988)

Membership in Professional Societies

Honours and Distinctions

Patents and Inventions

Patents:

i. International Publication under Patent Cooperation Treaty (PCT)

TN Gurusinghe, LDPS Jayasekara, HE Wijesooriya, RMIU Rajapaksha, PLAK Piyumal, JA Seneviratne, ALAK Ranaweera, KMDC Jayathilaka, LBDRP Wijesundera and SRD Kalingamudali, (2022). System and method for addressable data communication using Radio Frequency Communication, (WO 2022/189847 A1). World Intellectual Property Organization - https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2022189847&_cid=P20-L8E3Q1-87682-1

ii. Sri Lankan Patents

N Jayathilaka, NAKPJ Seneviratne, SRD Kalingamudali, RMIU Rajapaksha and TTD Manilgama, (2023). Vacuum manifold for column-based solid-phase extraction, Sri Lankan Patent No 21821. National Intellectual Property Office
TN Gurusinghe, LDPS Jayasekara, HE Wijesooriya, RMIU Rajapaksha, PLAK Piyumal, JA Seneviratne, ALAK Ranaweera, KMDC Jayathilaka, LBDRP Wijesundera and SRD Kalingamudali, (2022). System and method for addressable data communication, processing, control, and visualization based on RF wireless communication with or without an Internet connection, Sri Lankan Patent No 21656. National Intellectual Property Office
PLAK Piyumal, ALAK Ranaweera, SRD Kalingamudali and ADVN Kularatna, (2022). Dynamic Power Management Technique for Supercapacitor-Battery Hybrid Photovoltaic Systems, Sri Lankan Patent No 21483. National Intellectual Property Office
RMIU Rajapaksha, PSH Perera, PKDM Nandasena, PSTK Gunarathna, ALAK Ranaweera, SRD Kalingamudali and PPDG Kanishka, (2021). Auto removing regulator for Liquefied Petroleum Gas Cylinders and Electricity CUT-OFF system at Gas Leakages, Sri Lankan Patent No 20365. National Intellectual Property Office
WSK Perera and SRD Kalingamudali, (2019). Remotely Controllable Regulator Connected in Series with Resistive and Inductive Loads, Sri Lankan Patent No 18447. National Intellectual Property Office

iii. Sri Lankan Patents (Pending)

RMIU Rajapaksha, PLAK Piyumal, LDPS Jayasekara, TN Gurusinghe, , HE Wijesooriya, JA Seneviratne, ALAK Ranaweera, KMDC Jayathilaka, LBDRP Wijesundera and SRD Kalingamudali, (2022). AI-based Smart LP Gas Level Indicator, Sri Lankan Patent No 22121. National Intellectual Property Office
LDPS Jayasekara, HE Wijesooriya, TN Gurusinghe, RMIU Rajapaksha, PLAK Piyumal, JA Seneviratne, ALAK Ranaweera, KMDC Jayathilaka, LBDRP Wijesundera and SRD Kalingamudali, (2022). Addressable Data Communication System for Industry Automation and Industrial Internet of Things (IIoT) Based on Controller Area Network (CAN) Protocol, Sri Lankan Patent No 22424. National Intellectual Property Office
RMIU Rajapaksha, MPAV Gunawardhana, PLAK Piyumal, LDPS Jayasekara, TN Gurusinghe, HE Wijesooriya, JA Seneviratne, ALAK Ranaweera, KMDC Jayathilaka, LBDRP Wijesundera and SRD Kalingamudali, (2022). Neutral Connection-free Liquid-petroleum-gas/propane Sensitive Safety Electrical Switch, Sri Lankan Patent No 22450. National Intellectual Property Office
LDPS Jayasekara, TN Gurusinghe, HE Wijesooriya, MPAV Gunawardhana, RMIU Rajapaksha, PLAK Piyumal, JA Seneviratne, ALAK Ranaweera, KMDC Jayathilaka, LBDRP Wijesundera and SRD Kalingamudali, (2023). Smart Battery-Less Identification Card with Location Tracking and Attendance Monitoring Capabilities, Sri Lankan Patent No 22621. National Intellectual Property Office
HE Wijesooriya, LDPS Jayasekara, TN Gurusinghe, RMIU Rajapaksha, MPAV Gunawardhana, PLAK Piyumal, JA Seneviratne, ALAK Ranaweera, KMDC Jayathilaka, LBDRP Wijesundera and SRD Kalingamudali, (2023). Automated Stand-alone Wireless Water Quality Monitoring and Rainwater Harvesting System, Sri Lankan Patent No 22622. National Intellectual Property Office

Industrial Designs:

RMIU Rajapaksha, MPAV Gunawardhana, HE Wijesooriya, LDPS Jayasekara, TN Gurusinghe, PLAK Piyumal, JA Seneviratne, ALAK Ranaweera, KMDC Jayathilaka, LBDRP Wijesundera and SRD Kalingamudali, (2023). Safety Electrical Switch, Sri Lankan Industrial Design No 13787
HE Wijesooriya, RMIU Rajapaksha, LDPS Jayasekara, TN Gurusinghe, MPAV Gunawardhana, PLAK Piyumal, JA Seneviratne, ALAK Ranaweera, KMDC Jayathilaka, LBDRP Wijesundera and SRD Kalingamudali Internet Independent Wireless Real-Time Water Quality Monitoring Unit, Sri Lankan Industrial Design No 13786
RMIU Rajapaksha, PLAK Piyumal, HE Wijesooriya, LDPS Jayasekara, TN Gurusinghe, JA Seneviratne, ALAK Ranaweera, KMDC Jayathilaka, LBDRP Wijesundera and SRD Kalingamudali, (2022). Emergency Shut Off Liquid Petroleum Gas Regulator for Domestic Use, Sri Lankan Industrial Design No 13613
RMIU Rajapaksha, PLAK Piyumal, HE Wijesooriya, LDPS Jayasekara, TN Gurusinghe, JA Seneviratne, ALAK Ranaweera, KMDC Jayathilaka, LBDRP Wijesundera and SRD Kalingamudali, (2022). Smart Liquid Petroleum Gas Level Indicator, Sri Lankan Industrial Design No 13554

Industrial Designs (Pending):

RMIU Rajapaksha, MPAV Gunawardhana, HE Wijesooriya, LDPS Jayasekara, TN Gurusinghe, PLAK Piyumal, JA Seneviratne, ALAK Ranaweera, KMDC Jayathilaka, LBDRP Wijesundera and SRD Kalingamudali, (2022). Digital Irrigation Control Unit, Sri Lankan Industrial Design No 13741
TN Gurusinghe, RMIU Rajapaksha, HE Wijesooriya, LDPS Jayasekara, MPAV Gunawardhana, PLAK Piyumal, JA Seneviratne, ALAK Ranaweera, KMDC Jayathilaka, LBDRP Wijesundera and SRD Kalingamudali, (2023). Individually Controllable Parametric Speaker Array, Sri Lankan Industrial Design No 13785

Commercialised innovations:

The innovation Remotely Controllable Regulator Connected in Series with Resistive and Inductive Loads has been commercialised with Orel Corporation (Private) Limited, and the product launch was held on April 2023
In addition, Patent numbers 20365, 21656, 22121, 22424, and 22450 are already being commercialised with 8 License agreements and waiting for the product launches

Fellowships