Informatics Publishing Limited

Beulah Jackson ¹, T. Jayanthy ²

Affiliations
1 Sathyabama University, Chennai, Tamil Nadu, IN
2 Panimalar Institute of Technology, Chennai, Tamil Nadu, IN

Abstract

A more accurate and less time consuming method to determine sugar content in a sugarcane juice is proposed in this paper. The increasing use of microwaves for industrial testing is a growing demand for permittivity measurement as a function of frequency. Determination of sugar in sugarcane is an important task in sugar refineries as well as food industries. Early estimation of sugar content in cane juice also enables fixing the price for canes for procurement from the fields. The various methods to measure sugar content are IR method and chemical analysis method which consumes time. Hence we propose a microstrip resonator sensor designed at 1 GHz fundamental frequency using ADS tool which has passed experimental validation by means of Vector Network analyser. The sensor is implemented using planar technology and is more compact and is well suited for permittivity measurement. The technique adopted for the sensor is shift in resonant frequency as a function of density of sucrose content in sugarcane juice.

Keywords

Frequency Shift, Microstrip, Moisture Content, Permittivity, Resonator Sensor

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K. Vidhya ¹, T. Jayanthy ²

Affiliations
1 Sathyabama University, Sholinganallur, Chennai, Tamilnadu, IN
2 Panimalar Institute of Technology, Poonamalle Road, Chennai, Tamilnadu, IN

Abstract

In this paper two pole chebyshev microstrip band pass filter is designed using two hairpin resonators and they are electrically coupled. The band pass filter is designed using dual feeding structure. The higher order harmonics of band pass filter are suppressed by using folded stubs and rectangular split ring resonator. The filter is designed at the frequency of 2.5GHz. The band stop effect of folded open stubs and split ring resonators are utilized to suppress the higher order harmonics of band pass filter.

Keywords

Bandpass, Harmonics, Microstrip, Open Stub, Split Ring, Suppression.

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V. Sridevi ¹, T. Jayanthy ²

Affiliations
1 Sathyabama University, Chennai, IN
2 Panimalar Institute of Technology, Chennai, IN

Abstract

Carbon Nanotube Field Effect Transistor (CNTFET), one of nano electronic devices, is a transistor with its channel made of carbon Nanotube and it is designed to provide the solution for scaling process and the possibility of coexistence with current silicon technology. CNTFET-based devices offer high mobility for near-ballistic transport, high carrier velocity for fast switching, as well as better electrostatic control due to the quasi one-dimensional structure of CNTs. This paper describes the work on modeling, performance benchmarking for nanoscale devices and circuits using carbon Nanotube field effect transistors (CNTFETs), with the aim of guiding nanoscale device and circuit design. The integrated circuit operational amplifier (op-amp) is an extremely versatile electronic device, which is encountered in a wide variety of applications ranging from consumer electronics (stereos, VCR’s) to complex commercial applications and industrial controls. This paper also simulates the applications of Carbon Nanotube Field effect transistor based operational amplifier.

Keywords

Astable Multivibrator, Carbon Nanotube Field Effect Transistor, Differentiator, Nanoscale Devices and Circuits, Op-Amp.

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A. Sahaya Anselin Nisha ¹, T. Jayanthy ²

Affiliations
1 Sathyabama University, Chennai, IN
2 Panimalar Institute of Science and Technology, Chennai, IN

Abstract

This paper presents Design and Implementation of microstrip patch antennas for WLAN applications. Here Microstrip patch antenna for WLAN frequency (2.4GHz) was designed and simulated using different feeding techniques. There are various feeding techniques Microstrip line feed, Inset fed, Co-axial feed, Aperture coupled feed, and Proximity coupled feed used in Microstrip patch antennas. We have chosen Microstrip line feed and Co-axial feed due to the advantage that it can be easily fabricated. The simulation of microstrip antenna is carried out using ADS2009. The return loss, beamwidth and gain for microstrip line feed -12.5dB, 110o and 6dB respectively. The return loss, beamwidth and gain for co-axial fed patch antenna are -29dB, 150o and 4dB respectively. The Microstrip antenna substrate is FR4 of dielectric constant 4.6 and thickness 1.6mm. we are used same substrate for all the feeding techniques. The co-axial feed antenna resonated at 2.4GHz and Microstrip line fed antenna resonated at 2.404GHz.

Keywords

Microstrip Patch Antenna, Rectangular Patch, Feeding Techniques, WLAN.

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M. R. Ebenezar Jebarani ¹, T. Jayanthy ²

Affiliations
1 Sathyabama University, Chennai, IN
2 Panimalar Institute of Science and Technology, Chennai, IN

Abstract

This paper mainly deals with the comparative study of ARQ and Adaptive FEC error control techniques in wireless sensor networks. In Wireless sensor networks, the mode of data transmission is wireless, hence there is more possibility of errors occurring in wireless environment. The error control technique is very important which affect the parameters such as throughput, packet delivery ratio, packet lost, delay and error rate. The Adaptive forward error control technique is used to improve the throughput and reduce the error rate, there by correcting the errors and thus reducing the retransmission traffic. Two different error control techniques are analyzed and results are obtained.  In ARQ the erroneous packets are retransmitted. On the other hand in Adaptive FEC technique, errors are rectified with the help of the redundant information. The trade offs between ARQ and adaptive FEC schemes are investigated. The main aim is to compare and identify the error control technique that is well suited for wireless sensor networks.

Keywords

ARQ, Error, FEC, Throughput, WSN.

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