CHAIRMAN. I appreciate the work of the students and I feel happy to congratulate them.

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K.RAMAKRISHNAN COLLEGE OF ENGINEERING SAMAYAPURAM, TRICHY-621 112.

VISION OF THE INSTITUTE

To achieve a prominent position among the top technical institutions

MISSION OF THE INSTITUTE

To bestow standard technical education par excellence through state of the art infrastructure, competent faculty and high ethical standards.

To nurture research and entrepreneurial skills among students in cutting edge technologies

To provide education for developing high quality professionals to transform the society.

DEPARTMENT OF ECE VISION

To be distinguished as a prominent program for Electronics and Communication Engineering Studies by preparing students for Industrial Competitiveness and Societal Challenges.

MISSION

M1. To equip the students with latest technical, analytical and practical knowledge

M2. To provide vibrant academic environment and Innovative Research

culture

M3. To provide opportunities for students to get Industrial Skills and

internships to meet out the challenges of the society.

PROGRAM EDUCATIONAL OBJECTIVES (PEO’S)

PEO1: Graduates will have expertise to provide solution for the Engineering problems in Industry, Government and other organizations where they are employed.

PEO2: Graduates will provide innovative ideas and management skills to enhance the standards of the society by individual and with team works through the acquired Engineering knowledge.

PEO3: Graduates will be successful professionals through lifelong learning and contribute to the society technically and professionally.

PROGRAM SPECIFIC OUTPUTS (PSO’S):

PSO1: Students will qualify in National level Competitive Examinations for Employment and Higher studies.

PSO2: Students will have expertise in the design and development of Hardware and Software tools to solve complex Electronics and Communication Engineering problems in the domains like analog and digital electronics, embedded and communication systems.

CHAIRMAN

I am highly delighted to come to know that

the students of Electronics and Communication

Department have prepared a magazine for their

department. I always believe that the success of a

department lies in the cooperssation of the entire

team. As in the same case, success achieved here

due to the complete volunteer cooperation of the

ECE department students.

I appreciate the work of the students and I

feel happy to congratulate them.

Every success becomes grandeur only if it is

guided and regularly supported by a strong and

determined head ship. The head of the ECE

department stands by the same way, and constantly

supports, motivates the students and keenly watches

every step of the students. This has made all the

measures taken by the department, a grand success.

I strongly believe that the students are

engaged in proper education only if they gain

practical knowledge from all the subjects they study.

I have seen the ECE department to be best in

academics and discipline. I would feel very happy if

all my students are capable of doing a project of

their own. I wish you all success in the fore coming

years.

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DIRECTOR

I appreciate the Department of ECE for conservative first rank in Anna university exams. The Head of the department, faculty members and all the students co-operate each other in academics, extra-curricular activities and co-curricular activities, which develop the skills of the students. They achieve in Paper Presentations and Project displays in other colleges, which will develop personal skills. I wish the department to grow strength to strength and the students to shine in all the works of life.

PRINCIPAL

Always students with high caliber join ECE department. ECE Head of the department is a Front-runner. She provides immediate response to any activity. The faculty members always work with positive sense and they have never showed any refusal or denial at any case. Students’ performance is very good in academics. Faculties exhibit excellent and consistent performance. All the works given to the department are done within the stipulated time. I suggest the students to realize their talents and perform well right from the beginning, so that they could reach better results and lead all the other departments effectively. If they follow this, you can be comfortable with your subjects during the time of placement. ECE department is good at placements as they have good basic knowledge. Your department is meant for definite wonders.

HEAD OF THE DEPARTMENT

I am deeply thankful to the Board of management, Director, Principal, and the Heads of various departments, Faculty members for their consistent support and active involvement in motivational activities of our department. I extend my heart full thanks to the editorial committee members and students for their tired less effort towards releasing this magazine.

Choosing electronics field as profession needs challenging creative and extraordinary mind it gives me pleasure to lead such innovative students, who are the future experts of India.

Even i found myself studying a lot , gaining a lot only after taking my career in order to make my students to recognise all over the world . In earlier days machines make the work simple but with the advancements of electronics every process gets automated right from the consumer electronics to space research. Fabrication technology makes the circuit simple and compact. Recent trends in communication enable control of process in nook and corners of the world from the remote area.

Generally students have a mind set of learning from mother country and earning from foreign countries through the knowledge they gain from mother country. I strongly advice the students to expose the skills in the mother country to develop the nation.

My next focus is to make the students realise the importance of research and development in their interested domain. So i often dream of the of the revolution made by the students to make India a super nation in engineering. Let them shine and enlighten the path of others toward success.

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The department started its regular academic course with an inaugural on July 2016, Dr. Chinmoy Saha, Department of Avionics, IIST, Department of Space, Government of India Inaugurated with a special technical speech on Satellite system and antennas

International Conference on Innovations in Engineering, Technology and Science (ICIETS’17) on 24th and 25th February 2017

2 days workshop on EMERGING WIRELESS TECHNOLOGIES & MICROWAVE DEVICES THROUGH CAD, form 09.09.2016 to 10.09.2016

2 days course on PCB Design by RAACTS, for 2nd years in

the month of December 2016.

Seminar on Space Sensors by Mrs.Geetha Sen, Scientist, Department of Avionics, ISRO, on 24.02.2017.

Lecture on Transmission Lines & Waveguides by Dr.R.Pandeeshwari, Assistant Professor, NITT, on 24.09.2016.

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Mobile APP for T Cards

online

Work Process solutions

Most companies will be familiar with the tried and tested method of managing workload with a manual T Card Board. The visual, tangible nature of the system is ideal for managing Health & Safety tasks. Having such a low cost, efficient, method of workflow is often a vital cog in the running of a successful business or department. T Cards Direct have supplied and designed manual T Cards for over 60 years, and have developed an online version that mirrors the simplicity of the manual boards. This can be shown on large screens and desktops simultaneously giving users the most up to date information. The last 8 years has seen many additional features and developments, often at the request of clients. Attaching files, creating alarms, task allocation, activity review and analysis have all been made easier with recent updates. T Cards Online can also be integrated with other software packages using the Rest API, so tasks can be created and updated automatically. This avoids duplication but provides so much more useful visual information. Now the mobile APP has arrived to make it easier for users, not necessarily office based, to keep tack and update workflow.“As a well-established company we have always strived to provide cost effective solutions for our clients. The T Cards APP is just another demonstration of this. The manual T Boards are still a very popular option for businesses and I think there will always be a requirement for them as a “GoTo” board. However, the T Cards Online system with the new APP offers this and a lot more. Clients often need a more dynamic option to help co-ordinate tasks and control workflow. We regularly get complemented on how easy and simple the system is to setup and use. Being able to access the same T Boards from different locations will be a great advantage whether on site, in the office or in transit.” Setup and Configuration is done from the main licence on the website. The App can then be downloaded via user login details with a unique QR code. Any future changes on the APP are then simultaneously updated to the main licence for anyone to see. The full, no obligation, free 21 day trial is a great way to demo and get the system formatted to reflect clients requirements. Licences are available from as little as £5.00 per month + VAT. The App will be available from October 2018.

www.tcardsonline.co.uk

AARTHI R

II-ECE-A

MEMS Technology

Magic Means Micro

Micro-Electro-Mechanical Systems, or MEMS, is a technology that in its most general form can be defined as miniaturized mechanical and electro-mechanical elements that are made using the techniques of micro fabrication. The critical physical dimensions of MEMS devices can vary from well below one micron on the lower end of the dimensional spectrum, all the way to several millimeters. The term used to define MEMS varies in different parts of the world. In the United States they are predominantly called MEMS, while in some other parts of the world they are called “Microsystems Technology” or “Micro Machined Devices”. While the functional elements of MEMS are miniaturized structures, sensors, actuators, and microelectronics, the most notable elements are the micro sensors and micro actuators. Micro sensors and micro actuators are appropriately categorized as “transducers”, which are defined as devices that convert energy from one form to another. In the case of micro sensors, the device typically converts a measured mechanical signal into an electrical signal. The more complex levels of integration are the future trend of MEMS technology. The present state-of-the-art is more modest and usually involves a single discrete micro sensor, a single discrete micro actuator, a single micro sensor integrated with electronics, a multiplicity of essentially identical micro sensors integrated with electronics and a single micro actuator integrated with electronics. MEMS technology is sometimes cited as separate and distinct technology. In reality the distinction is not so clear-cut. The well-known Scanning Tunneling- Tip Microscope (STM) which is used to detect individual atoms and molecules on the nanometer scale is a MEMS device. Similarly the Atomic Force Microscope (AFM) which is used to manipulate the placement and position of individual atoms and molecules on the surface of a substrate is a MEMS device as well. In fact, a variety of MEMS technologies is required in order to interface with the nano-scale domain. Thus the MEMS is a technology of encompassing highly miniaturized things that cannot be seen with the human eye. The common benefits afforded by this technology, include: increased information capabilities, miniaturization of systems, new materials resulting from new science at miniature dimensional scales, and increased functionality and autonomy for systems.

ESWARAN S

II-ECE-A

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When Signal Matters

Many electronic equipments these days are using opto-coupler in the circuit. An opto-coupler or optoisolator allows two circuits to exchange signals yet remain electrically isolated. The standard opto-coupler circuit configuration utilizes an LED and a photo-transistor; usually it is an NPN transistor. Opto-couplers are also fabricated in few modules like SCRs, photodiodes, TRIACs and other semiconductor switches as an incandescent lamp or other light source. This article briefs about an opto-coupler MOC3020.

Working principle of MOC3020:

The MOC3020 is designed for interfacing electronic controls and power TRIAC to control resistive and inductive loads for Vac operations. The principle used in opto-coupler is, MOC’s are promptly available in integrated circuit form and don’t require very complex circuitry to make them work. Simply give a small pulse at the right time to the LED in the package. The light produced by the LED activates the light sensitive properties of the DIAC and the power is switched on. The isolation between the low power and high power circuits in these optically connected devices is typically few thousand volts. The circuit is a typical circuit used for AC load control using microcontroller, external LED can be connected in series with MOC3020, to indicate a high level from micro controller to ensure that current flows in internal LED of the opto-coupler. The power lamp is activated by mains AC power supply and hence no external power supply is required. To switch the AC current to the lamp, we have to use an opto-coupled TRIAC, lamp and a DIAC. A TRIAC is an AC controlled switch. It has three terminals M1, M2 and gate. A TRIAC, lamp load and a supply voltage are connected in series. When power is on, at positive cycle the current flows through lamp, resistors, DIAC, and gate and reaches the supply and the lamp glows for that half cycle directly through the M2 and M1 terminal of the TRIAC. In negative half cycle the process repeats. Thus the lamp glows in both the cycles in a controlled manner depending upon the triggering pulses at the opto isolator. If this is applied to a motor instead of lamp, the power controls the speed of the motor.

Say Goodbye to Pills. Nano

Robots Can Cure

Nano robots will be able to repair damaged or diseased tissues. The circulatory system is the natural path for these devices and the nano robots will pass through the blood stream to the area of defect. They attach themselves to specific cells, such as cancer cells and report the position and structure of these tissues. A creative methodology in the use of these devices to fight cancer involves using silicon nano machines with a thin coating of gold and light in the near infrared spectrum. Light in the 700-1000 nanometer range will pass through the tissue and reaches the defective cell. When this infrared light strikes the particular type of nano robot, the device gets hot due to the oscillation of the metal’s electrons in response to the light. Using an MRI, the nano robot is specifically placed in the cancerous region, and then the light causes the devices to heat to 131 degrees Fahrenheit which destroys the cancerous cells but doesn’t damage surrounding tissues. This is the new technology, without any drawbacks. These nano robots can cure any disease without affecting any other cells or tissues. The future vision: Imagine going to the doctor to get treatment for a fever, instead of giving you a tablet the doctor implants a tiny robot into your bloodstream. The robot detects the cause of your fever, travels to the appropriate system and provides a dose of medicine directly to the infected area. This is going to happen in a few years of time from now. Each person is going to have a nano robot in his body which is going to monitor human body system. So the time arrives to enjoy with the robot within our self.

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No Defence Without Talon

TALON is a powerful, lightweight, versatile robot designed for missions ranging from reconnaissance to weapons delivery. Its large, quick release cargo bay accommodates a variety of sensor payloads. Built with all weather, day/night and amphibious capabilities standard TALON can operate under the most adverse conditions to overcome almost any terrain. The suitcase portable robot is controlled through a two-way RF/F/O line from a portable or Wearable Operator Control Unit (OCU) that provides continuous data and video feedback for precise vehicle positioning. TALON payload and sensor include multiple cameras, a two stage arm, NBC sensors, radiation sensors, communication equipment. The TALON robot is used for bomb disposal. It is operated by radio frequency and equipped with four video cameras. The TALON began helping with military operations in Bosnia in 2000. TALON robots had been used in about 20,000 missions in Iran and Iraq. Soldiers operate the swords by remote control from up to 1,000 meters away.

---“Skyrmions” For Data Storage”

Researchers in Germany have used skyrmion tiny magnetic vortices that can be imagined as two dimensional knots in which the magnetic moment rotates about 3600 degrees within a plane for the first time to store data. This technology could be used to create hard disk with higher densities and faster data transfer speeds.

What Are Skyrmions?

Skyrmions that consist of a small number of atoms were first identified about 80 years ago and have been the object of intensive research in recent years. They are named after a British particle Physicist, Tony Skyrme. This meant the existence or non-existence of a skyrmion could be assigned the digital bit states “1” and “0”, the basis for information technology.

In a Gist:

In their experiment, the researchers used a two atomic layer thick film of palladium and iron on an iridium crystal. They observed the skyrmions, with a diameter of a few nanometers, with a scanning tunneling microscope. The skyrmions were then manipulated with a small spin polarized current from the tip of the microscope. The research team has demonstrated the feasibility of skyrmions in data storage. This new technology can also be introduced in computers, tablets and smart phones

KAVYA S

IV-ECE-B

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Organic Solar Cell

New Light on

Sustainability

In an impressive feat of engineering,

scientists in Denmark have devised a rapid, scalable

and industrially viable way to manufacture large

sheets of flexible organic tandem solar cells. Their

successful application of roll-to-roll processing is a

significant achievement for this emerging renewable

technology. An Organic PhotoVoltaic(OPV) solar

cell is a polymer-based thin film solar cell. OPV

solar cells have been the focus of much research as

they are lightweight, flexible, inexpensive, highly

tuneable and potentially disposable. They are also

unparalleled in the number of times that they can

pay back the energy used in their manufacture. In

the quest to improve the efficiency of OPVs, which,

in addition to operational lifetime, is currently their

key limitation, various new materials, processing

methods and device architectures have been

thoroughly investigated. Among these is the tandem

cell, where multiple junctions are stacked upon one

another. This can increase the efficiency of the cell

by not only increasing the number of junctions, but,

along with careful selection of complementary

materials, can make it possible to harvest photons

from a broader region of the spectrum. However,

this more complicated architecture renders their

manufacture

significantly

more

challenging.

Frederik Krebs and his research team at the

Technical University of Denmark are specialists in

renewable energy technologies, particularly OPVs.

For the first time they have demonstrated the

successful roll-to-roll manufacture of tandem OPV

modules, each comprised of a stack of 14 discrete

layers, which are rapidly printed, coated or

deposited one on top of another by a machine

reminiscent of a printing press. The experiment was

carried out in simple conditions and is extremely

fast, with a single solar cell module being printed

onto blank foil each second. Most importantly, the

process is relatively cheap and completely scalable,

with a high technical yield. ‘If I have made a

kilometre of solar cells, then I am not interested if

one module has an efficiency of 10% and the rest

are 2% – I think what is important is what you can

make for the public,’ says Krebs. ‘I am

the guy that makes a lot of it and tries to look for the

average and what is practical, and then there are the

other guys that look at what is obtainable.

Everybody has their role to play and hopefully we

will meet some day, probably somewhere in the

middle.’ ‘The performance from these fabricated

devices has a long way to go to achieve commercial

viability,’ states Seth Darling, an expert in solar

energy conversion at Argonne National Laboratory,

US, ‘but this work clearly shows that the process

itself is feasible and has the potential for genuine

market impact.’ The future direction of this research

now lies in materials development, and in the

optimisation of each layer for the manufacturing

process.

SHIVAGAMI V

IV-ECE-A

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A TO R ADVICE TO

MY DEAREST

FRIENDS

Amplitude – Always be honest

Bias – Be there when they need you

Cathode – Cheer them and give them encouragement

Diode – Don‘t look for their mistakes, go ahead

Electronics – Encourage their dreams, what would be

without them?

Field – Forgive them though they are wrong sometimes

Gate – Get together to make any discussion

Harmonic – Have faith in them

Inductance – Ignore all their mistakes

JFET – Join together and give support

Kmap – Keep in touch till they live

Latch – Love them always

Microprocessor – Make them feel special

Nyquist – Never forget them

O p-amp – Open free to offer help

Potentiometer – Praise them honestly and openly

Q –point – Quietly discharge when they are angry

Resistor – Really listen to their words; make your ears

free to them

LAKSHMI PRIYA V

II-ECE-B

Quotable Quote

PUZZLE: Time for Left Brain

Generating 1‘s Triangle

1x1

o

+ 0x9 + 1x0 = 1

1x2

0

+ 1x9 + 1x1 = 11

1x3

o

+ 12x9 + 1x2 = 111

1x4

0

+ 123x9 + 1x3 = 1111

1x5

0

+ 1234x9 + 1x4 = 11111

1x6

0

+ 12345x9 + 1x5 = 111111

1x7

0

+ 123456x9 + 1x6 = 1111111

1x8

0

+ 1234567x9 + 1x7 = 11111111

1x9

0

+ 12345678x9 + 1x8 = 111111111

1x10

0

+ 123456789x9 + 1x9 = 1111111111

FANCY NUMBERS

12345679*9=111111111

12345679*18=222222222

12345679*27=333333333

12345679*36=444444444

12345679*45=555555555

12345679*54=666666666

12345679*63=777777777

12345679*72=888888888

12345679*81=999999999

SRI VARSHINI C II-ECE-C

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Figure

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References