Dr Divya Chaturvedi, Assistant Professor, Department of Electronics and Communication Engineering, has come up with an exciting proposal for enhanced connectivity and high-speed data transmission across the Internet of Medical Things (IoMT) devices. Her research paper titled “Design of Antenna-Multiplexer for Seamless On-Body Internet of Medical Things (IoMT) Connectivity” has been published in the journal ‘IEEE Transactions on Circuits and Systems II: Express Briefs’, having an impact factor of 3.71. It was published in collaboration with Dr Arvind Kumar from Vellore Institute of Technology and Dr Imaculate Rosaline from Ramaiah Institute of Technology, Bangalore.

The research looks into the design and development of a multi-band self-triplexing antenna for Medical Things (IoMT) applications. The antenna is designed to operate at 5.2, 5.5 and 5.8 GHz and self-isolation is achieved below -23.9 dB. It also offers seamless communication links to other devices operating at the same frequencies. The designed antenna is cost-effective and compact in size, that can easily fit into any implantable medical device. To avoid the harmful effect of radiation, the SAR value should be <1.6 W/kg. The SAR for this antenna is achieved at 0.362 W/kg in a very simple profile. Due to its compact size, the antenna can be easily mounted in a wireless portable device. The self- triplexing property of the device also enables full-duplex communication between different devices in a single antenna. This design suggestively simplifies the density of the RF front-end subsystem and leads to a simple and efficient communication system.

Abstract of the Research

Here, a compact design of antenna-multiplexer is engineered specifically to meet the stringent requirement imposed by intricate subsystems operating at 5.2, 5.5, and 5.8 GHz frequency bands for Internet of Medical Things (IoMT) applications. The proposed design includes a hexagonal-shaped substrate integrated waveguide (HSIW) cavity, tripole-shaped radiating slot, tuning vias, and three inset microstrip feedlines. A tripole-shaped slot is imprinted on the top of the SIW. This slot subdivides the cavity into trio-radiating segments and each segment offers a single frequency band. Further, the frequency bands are tuned at 5.2/5.5/5.8 GHz. The design maintains mutual port isolation better than 23.9 dB. Compared with the conventional tri-frequency antennas, the proposed design is highly compact and doesn’t need any additional circuitry to improve the port isolations. The measured results confirm the expected performance of the design. Furthermore, the proposed antenna is optimized within an implantable medical device (IMD) and simulated inside a realistic Human Head model at a depth of 3 mm and the Specific Absorption Rate (SAR) value is estimated. The SAR values are well below 0.362 W/Kg at the functioning bands due to the unidirectional radiation pattern from the antenna.

Her future research plan includes designing and developing a cost-effective bra-like prototype of Antenna-Array Sensors for breast cancer detection.

antenna multiplexerantenna multiplexer

The Department of Electronics and Communication Engineering is glad to announce that our PhD scholar, Mr Vasudeva Bevara and BTech students, Mr Shakamuri Narendra Chowdary and Mr Bolem Venkata Surendra Babu, published a paper titled ‘High performance 2n: 1: 2n Reversible MUX/DEMUX Architecture for Quantum-dot Cellular Automata’ in the international journal ‘Numerical Modelling: Electronic Networks, Devices and Fields (SCI Index)’ under the supervision of Dr Pradyut Kumar Sanki.

Abstract of the Research

Quantum-dot Cellular Automata (QCA) lead to fundamental changes in nanoscale technology. It promises small area, low power & high-speed structures for digital circuit design. This paper presents efficient low power structures of Reversible Multiplexer & Demultiplexer (RMD) modules based on the QCA technology. The simulation result shows that the proposed RMD modules have utilised less area & low power consumption. The simulation, layout & energy dissipation analysis of the proposed RMD module has been carried out using the QCA Designer-E simulation tool.

Essentially, CMOS is used as a well-known traditional technology in the design of the Very Large-Scale Integration (VLSI) circuits, which leads to the introduction of QCA as new nanotechnology to overcome the limitations of CMOS technology, such as material, physical, power, heat & economic challenges.

In reversible computation, the power dissipation occurs only when the computation is started or when the output is permanently stored. The reversible logic circuits are being investigated to prevent data loss in irreversible logic circuits. The reversible logic circuits provide zero loss of energy/information making the logic circuits the most suitable for QCA nanotechnologies. This has resulted in widespread interest in the design of reversible logic circuits based on QCA over the last few years.

In this paper, a modular 2n: 1 reversible multiplexer & 1: 2n reversible demultiplexer design in a single circuit is proposed. The 2:1 multiplexer & 1: 2 demultiplexer is realised in a single module i.e., 3 × 3 RMD. The 3 × 3 RMD is formed fundamental building block of the modular 2n: 1 reversible multiplexer & 1: 2n reversible demultiplexer design is extended to large RMD design.

Practical Implementations of the Research

This work can push forward research in the QCA domain and overcome the limitations of Complementary Metal Oxide Semiconductor (CMOS) technology. Soon the era of Beyond CMOS will start as the scaling of the current CMOS technology will reach the fundamental limit. QCA (Quantum-dot Cellular Automata) is the transistor less computation paradigm and viable candidate for Beyond CMOS device technology.

So, they have implemented the High Performance 2n: 1: 2n Reversible MUX/DEMUX Architecture for Quantum-dot Cellular Automata compared to other researcher works. In future, the research team would like to explore deeper into QCA technology and design efficient circuits which are small sized, with less cell count and less power consumption.

quantum dot cellular automataquantum dot cellular automataquantum dot cellular automata

Amara rajaOnce you are a part of SRM University-AP, we ensure that your future is secured! With the guidance of Dr Sujith Kalluri, Assistant Professor, Electronics and Communication Engineering, Mr Chanakya wends his way to Purdue University, USA, a world-renowned research university, for doing his PhD. He secured admission with a full tuition fee waiver and teaching assistantship. Chanakya Karra spent his two years DST-SERB JRF position at SRM AP and has made remarkable contributions to SRM-Amararaja Centre for Energy Storage Devices.

DST-SERB JRF position helped Chanakya resume his research career, which had a pause for over a year. “It fills me with immense joy to see the SRM-Amararaja Centre for Energy Storage Devices shape up with every possible equipment to conduct research on batteries. Kudos to the management and the efforts of the faculty associated with the centre,” says Mr Chanakya. He further mentioned that the research work conducted at SRM-Amara Raja Centre enabled him to write over three papers that catapulted his chances of admission.

“I would urge the students to make the best use of the opportunities available at SRM-AP and discuss their plans with the faculty. I am sure new avenues will open with the mentoring of world-class faculty at SRM”, says Mr Chanakya to the junior batches of students aspiring for a research career.

Mr Chanakya expressed his gratitude to the faculty members associated with Amararaja Centre for Energy Storage Devices- Dr Pardha Saradhi Maram, Associate Professor, Chemistry, Dr Surfarazhussain S Halkarni, Assistant Professor, Mechanical Engineering, Dr Laxmi Narayana Patro, Assistant Professor, Physics, and others.

Sujith Kalluri

Dr Sujith Kalluri from the Department of Electronics and Communication Engineering was honoured with the “ICTSGS Service Award for Sustainable Development Goals (SDGs)” in the recently held First International Conference on Technologies for Smart Green Connected Society 2021. The conference was jointly organised by the Electrochemical Society, USA, Yamagata University, Japan, and United Nations FAO, Italy. The award was presented for Dr Kalluri’s contributions in organising the international conference with the relevant audience. Dr Kalluri would further take up the role of Guest Editor in some of the prestigious peer-reviewed international journals.

The honour presented to Dr Kalluri further leads to research and professional collaboration with SPAST Foundation, Yamagata University Japan, and The Electrochemical Society USA.

admission multiple universities abroad

The Department of Electronics and Communication Engineering could not be prouder as their student Sohith Chowdhary Akkineni turned out to be the next in the line of the lucky handful who has received admission offers from various world-class universities. Giving wings to the dreams of students makes the university a choice destination for next-generation where dreams are turned into reality.

With its priority being, teaching the students to dream big and facilitating their journey ahead, more students have found a place to initiate the primary strides towards a world of opportunities looming ahead. They bring laurels back to the university by placing its name on the global map. Sohith Chowdary has also reciprocated his love and respect for SRM University-AP by making the best use of the conducive learning atmosphere, experienced faculty, and cutting-edge infrastructure which opened the doors for higher studies abroad. He received admission offers from the University of Maryland, Northeastern University-Boston, George Washington University with a scholarship of 25% of the tuition fee, and Rochester Institute of Technology with yet another whopping scholarship of $15,561.

“I am indeed grateful to my HOD, Siva Sankar sir for giving me deeper insights into the course I have chosen, and to Swetha ma’am of International Relations Office for helping me get the necessary documents from the college. Besides, I would also like to thank all my professors, Sujith Kalluri sir, Gangi Reddy Salla sir, and Sateeshkrishna Dhuli sir for their Letters of Recommendation”, said Sohith. He also expressed his desire to start a career in the field of research in Telecommunication Networks.

As a word of advice to his juniors, Sohith said, “Choose a course that interests you, rather than following everyone else, do research in the course you have chosen, and apply to international universities preferably before the priority deadline”. With the number of students enrolling into international universities rising, SRM University-AP continues to build a legacy of its own in the domain of global education.

Mr D Lenin Babu from the Department of Electronics and Communication Engineering published his research “A Novel 8-Channel DWDM demultiplexer on Silicon Photonic Crystal slab: Design and Analysis” in Elsevier journal ‘Optik’, having an impact factor of 2.44. This research was carried out under the supervision of Dr Sreenivasulu Thupakula, Assistant Professor, Department of Electronics and Communication Engineering.

Abstract:

The published research presents a novel method to achieve optical information transmission at improved speed and reliability. Multiplexing and demultiplexing are the techniques used to enhance the information transmission rates and effective utilisation of channel bandwidths in communication systems. Dr Thupakula and Mr Lenin Babu proposed a new design with a minimised size of approximately 1mm and reduced information loss.

The team collaborated with the Applied Photonics Laboratory, Department of Electrical Communication Engineering, Indian Institute of Science, Bangalore, to conduct the research.

“The ongoing research is useful not only for communication applications but also for refractive index based sensing applications such as biosensing, Force sensing etc. Our future work includes Integrated optics-based antenna design for THz communication systems, Waveguide devices for sensing applications at THz wavelengths etc.,” said Dr Thupakula.

The Department of Electronics and Communication Engineering is proud to announce the remarkable achievement of the students Chebrolu Taraka Sai Tanishq and Vellampalli Medha V Subrahmanya Aditya. They have designed a wearable face shield and secured the second position in IEEE Covigilance, 2021 – A pan India student contest based on Covid-19 relief do it yourself equipment design and development, under the guidance of Dr Anirban Ghosh, and got a patent published for their prototype developed as part of the competition. The team also participated in the 4th Research Day organized by SRM University-AP and received a gold medal.

The prototype was submitted in the design competition on July 30, 2021, and after 40 days of rigorous brainstorming, component procurement and prototype development, the final model was submitted for evaluation. Based on prototype execution, feasibility of manufacturing and suitability of the model to contain the spread of the pandemic, the team secured second place in the Pan India contest, and it was deemed fit to address the two criteria; innovation challenges like Innovation of homemade masks/shields/PPEs and innovation of a feasible solution to control covid-19 spread while the schools and colleges are reopening. Further, this prototype was submitted to the patent office under the name “A Wearable Face Shield” (Application no:202241000990) and the patent was published on January 21, 2022.

Their accomplishment bears testimony to the fact that unflinching determination towards your goals and consistent efforts to make them come true will always pay off. Designing a wearable face shield is a well-timed innovation as the pandemic shows no sign of retreat and face shield has become one of the daily necessities of all mankind.

About the Prototype

The wearable face shield is a medical protective device, and it comprises a frame for securing the shield to the head of a wearer, a transparent sheet extending from the frame, a detection circuit that is mounted on the frame, a switch, and a battery module. The detection circuit comprises of a control unit that processes the sensed data received from proximity and temperature sensors to generate output signals and an alerting unit that comprises LEDs, buzzer and it provides an indication of– (i) the presence of a detected external object within a pre-determined distance of the wearer (ii) the sensed body temperature of the wearer. The alerting unit is placed strategically to alert people via visual and audio signals respectively.

Such precautionary detection and proximity alert prototype can prove instrumental in early diagnosis and isolation aiding in crowd management and free movement in places of social gathering. Hence, a wearable face shield ensures adequate separation between persons and facilitates temperature monitoring and early detection of disease.

They are currently working on a project called “Human Monitoring System” (HUM). It is an all-pervasive system designed to measure and keep track of the heartbeat, blood pleasure, temperature, location, Spo2 level etc of the user. In the event of an emergency or critical drop in any of the vitals, the system can automatically alert the local hospital, ambulance service and relatives.

pursue overseas education SRMAPPursuing higher education in universities of international repute is perhaps a long-cherished dream of every student. SRM University-AP has always been at the forefront in providing the right avenues for students to explore their inherent talents and in equipping them with the right skillset through educational practices and research programmes of global standard.

It is an honour for SRM University-AP to announce that three of our students; Varanasi Koundinya, Sai Nived Chandanam and Jayanth Devarajugattu of the Department of Electronics and Communication Engineering have secured admission in the University of Texas at Dallas to the Master of Science in Computer Engineering programme for the Fall 2022 semester.

Exposure to state-of-the-art technological facilities and involvement in research-oriented pedagogical practices enable students to outperform in a world where technology is evolving at a rapid pace. Courses anchored in a multi-stream framework empower students to specialize across disciplines, thereby expanding their choice of higher studies in and outside the country.

In the words of Jayanth Devarajugattu, a strong collaboration of the university with international universities and industries across the globe have been of immense help to seize an opportunity for overseas education. He also marked his gratitude to the faculty members who have provided him with effective guidance throughout the research. “I am extremely grateful to Ramesh Vaddi sir, Siva Sankar sir, Anirban sir, Gangi Reddy sir for guiding us throughout the process by helping us choose the right university and issuing a letter of recommendation”, he said.

Associating with faculty members on various research projects will always offer new insights to students to think differently. “Dr Ranjit Thapa sir with his teaching and research work inspired me the most in pursuing my masters, I look up to him”, said Sai Nived.

All of them expressed their gratefulness to the university for endowing them with appropriate training which helped them maintain good grades, conduct research and publish papers. “Your CGPA and paper publications play a crucial role in making into an international university of your choice”, they mentioned.

The Inter-Disciplinary Experiential Active Learning (IDEAL) pioneered by SRM offers flexibility in course curriculum, thereby giving students the freedom of curating syllabus with respect to their interests and aspirations. Fostering an environment of academic freedom and prioritizing the interests of students in line with the demands of present times distinguish SRM University-AP as an emerging university of world-class standard. Working towards the dreams of students has always been the driving force behind the advancement of SRM University-AP.

Students distribute winter clothing among slum dwellersIn a major initiative by the students of SRM University-AP, sweaters were distributed among the poor kids living on the streets of Guntur. Under the initiative, students from the 2018 batch of Computer Science Engineering, Civil Engineering, Mechanical Engineering, Electronics and Communication Engineering, and Management Studies visited slum areas on the roadside near Shri Hospital, Guntur and distributed clothing among 44 kids ranging from 3 to 16 years old.

“We know how the families whose sustenance depends on the street have suffered during the pandemic. I am sure these small acts will bring cheers to these families,” said Prof V S Rao– Vice-Chancellor of the university. Prof B V Babu– Dean, School of Engineering and Sciences- highlighted the wonderful gesture saying “I am really glad to see the sensitivities and sensibilities our students have in sharing and giving”. Ms Revathi Balakrishnan– Assistant Director, Student Affairs appreciated the efforts, selfless service and compassion of SRM AP students to the lesser privileged.

Dr Inbarasan MunirajImaging various three-dimensional (3D) objects under ultra-darkness is a fascinating process. However, our conventional cameras are not intelligent enough to capture the experience. Dr Inbarasan Muniraj, Assistant Professor in the Department of Electronics and Communications Engineering, is all about changing that.

Dr Inbarasan Muniraj’s project, “Sensing in the dark: An automated off-focused points detection and removal from the photons starved 3D volumetric dataset”, has received a SERB-SRG-DST of Rs. 20.8 lacs for a two-year duration.

Dr Muniraj describes his project as such,

“Assume that there is no external light, e.g., a dark room, when you capture an image using a camera (mobile or DSLR). Often, the captured images will look dark, and it is too difficult tointerpret anything from the picture. However, algorithms have been developed to make use of the low scattered photons from a scene to estimate the equivalent normal intensity image. We use one such technique to generate photons-counted images for a 3D object and perform a 3D image reconstruction. One of the major problems in 3D reconstruction is off-focused points which look blurry and redundant. Therefore, in this project, we aim to employ a deep learning technique to smartly recognise and remove the off-focused points from a reconstructed 3D scene under photons starved conditions.”

Dr Inbarasan Muniraj is the sole investigator of this project. According to him, there are much more extensive social implications associated with this project. To note, this technique can be extended for various applications such as night vision, security, and biomedical imaging etc.