Design of Microstrip rectangular patch antenna for wireless application

Research study published in international journal of research

My second research paper, which got published in october 2014, microstrip antenna is a small compact antenna used in mobile phone mainly for effective communications.

Abstract

This paper demonstrates the design of a rectangular probe feed microstrip patch antenna for frequency specific wireless applications operating in the frequency range of 4.2Ghz to 5Ghz.Use of higher bandwidth in microstrip has been possible by using different methods of patch construction but this antenna aims at specific short band of 0.7Ghz to be used only at desired centre frequency of 4.85Ghz. The antenna has a good gain of 7.9209db and directivity of 8.0019db.It has Voltage standing wave ratio less than 2 and is very easy to be constructed.

Introduction:

The huge demand of wireless communication system and their miniaturization has made 

antenna design more challenging. Recently  

microstrip patch antennas have been widely  

used in satellite communications, aerospace, 

radars, biomedical applications and reflector 

feeds because of its inherent characteristics 

such as light weight, low profile, low cost, 

mechanically robust, compatibility with 

integrated circuits and very versatile in terms 

of resonant frequency. The patch antenna 

model used for the numerical simulation in 

Ansoft HFSS is shown below. In this paper the 

patch antenna is designed for 5GHz operation 

on a substrate with 2.2permittivity and 

0.32mm thickness.The patch with the coaxial 

feeding was simulated in AnsoftHFSS.It has a 

bandwidth of 4.5Ghz to 5.2Ghz.

the antenna is practically in use and is functioning as desired. the full paper can be downloaded by visiting this link.

http://internationaljournalofresearch.org/index.php/ijr/article/view/603

controlling suicides in indian metro railway by implementing a laser driven mechanical prey catching system

This is a Research study under humanitarian technology ,

My first research paper and the one for which i struggled the most to get it work.The design is not yet implemented because of many contradictory designs but is soon to be used in future when government learns it to be the only design to work.

Abstract: 

The objective of this paper is to propose an Analog circuit based design to control suicides in Indian metro railways. The proposed design is cheap, flexible and reliable. A laser beam is used to detect people jumping on the track which is connected to a light dependent resistor to send signal to control room of the station and the train arriving on that platform. Simple encoded transmitter and receiver are used to design the system. The design not only deals with stopping the train in such cases but also catching the people on an automatic driven mechanical tray.

INTRODUCTION

Metro Railway has become the best place for people to attempt suicide. At present the death toll counts 108 in Kolkata metro railway. Due to this abnormal mental activity of humans, metro railway services gets disrupted for many hours which makes the passenger suffer from loss of time and money. A lot of measures have been taken till now to control such accidents but none was found to be efficient enough because all the theories proposed till now deals with controlling the speed of train and power off the tracks.

A new method is implemented in this design, in which a laser beam of low intensity which will not be harmful to any human will run parallel over the edge of the platform if a citizen tries to jump on the track, laser will face obstruction and send a signal to control room as well as to the train incoming on the track. On receiving the signal the control room will switch off the power of tracks and the train on receiving the signal will automatically drive a mechanical tray to catch the person jumping on the track. This design deals with not just controlling but also saving the people attempting suicides.

The research paper can be downloaded from the International journal of research

click here to download: http://internationaljournalofresearch.com/2014/05/20/controlling-suicides-in-indian-metro-railway-by-implementing-a-laser-driven-automatic-mechanical-prey-catching-system/

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