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In this paper, a reconfigurable patch antenna is designed and analyzed as a communication antenna for applications in Cognitive Radio (CR). Partial ground planes are used in micro strip patch antennas to increase bandwidth. Ring resonators are used for stopping the unwanted set of frequencies. A rectangular radiating patch on a substrate is considered with a ring resonator embedded into the ground...
In the recent networks, a multiuser downlink MIMO-OFDM (Multiple-Input Multiple-Output Orthogonal Frequency-Division Multiplexing) systems associated with Coordinated Multipoint (CoMP) technique ensures to fulfill the individual rate target across all users is considered. The CoMP technique enables to share the channel superiority measurements and schedules the transmissions, allowing for more efficient...
Abnormal growth of cells in proliferated and uncontrolled manner leads to brain tumor. Accurate segmentation of brain tumor plays a vital role for analyzes, diagnosis and planning for treatment. An efficient method for brain tumor segmentation from T1 weighted MRI images is performed in two phases based on histogram thresholding and region growing techniques. Though simple and quick, thresholding...
The task of achieving depth control of an Autonomous Underwater Vehicle (AUV) is rendered complex by its coupled non-linear dynamics. The paper deals with depth control of a REMUS AUV, for which different types of control strategies have been presented. Specifically, control strategies like PID, LQR, MPC have been discussed, which are quantitative controllers. The time consuming online optimization...
Wireless sensor network are widely used in different area application, especially in the field of surveillance and monitoring tasks. So for the implementation in practical life many constraint and challenge arise. In the present paper we are focused on one of main such constraint called deployment of sensor node for better coverage. In this paper we review on the different techniques on deployment...
The trend in today's wireless application is to design antennas that are compact, robust and ease to integrate with RF circuit components. Microstrip patch antenna is one such type that satisfies the above requirements. But the two main factors of an antenna namely the gain and the bandwidth are low for patch antennas. Usually the gain range of patch antenna is 1–2dB. The most straightforward way...
Network simulations are widely used to explore performance of network protocols. It's easier to evaluate network performance in computer model rather than develop “live” experiment. Simulations allow modeling any kind of networking with large amount of interacting devices using only one PC. Moreover one can use network simulations to determine how network will work with different physics e.g. deep...
This paper considers the possibility of increasing data transmission rates of remote sensing satellite radio downlink up to 1 Gbps and further by designing a communication system in K-band. The results of link budget estimation and radio link capacity are presented with regard to such limitation factors as the allowed power of a satellite transmitter and the quality factor of a ground receiving station...
This paper presents the design and implementation of a Micro strip antenna which is suitable for S-Band applications. Different antennas are existed, but microstrip based patch antennas are used mostly in IC and PCB technologies which are required for the modern applications. Micro strip antenna consists of small conducting patch made of copper or gold which are placed on a dielectric material. The...
Diabetes mellitus is relevant to diabetes. It is a metabolic disorder in which there is increase in blood sugar levels over an elongated period. The reason for diabetes is due to lack of insulin in a person's blood i-e this is caused when insulin is not produced in required amounts. From the literature survey it is observed that more number of diabetes mellitus cases is caused due to the delayed detection;...
The fabrication mechanisms of MEMS helps us to develop diaphragms for various applications such as micropumps, microphones, other precise pressure sensors, etc. The fundamental working principle behind all of these devices is based on the pressure applied onto the plates of the diaphragm that causes it to deflect. A comprehensive literature review has been presented in this work focusing on the research...
This paper proposes the design of a similar key shaped patch antenna intended for aviation purpose and can also be used by International Broadcast stations. The design uses a FR4 epoxy substrate having a relative permittivity of 4.4 and a thickness of 1.6 mm. The numerous advantages offered by the utilized probe feeding technique includes simple fabrication and easy match, provides low spurious radiations...
In this paper, implementation and comparisons of Nearest Vector Control and Nearest Level Control modulation techniques for 27-Level with 3-Cell Asymmetrical Cascaded H-Bridge Multilevel Inverter is presented to analyse the performance and application oriented complexity. Asymmetrical type of multilevel inverters is familiar in the view of attaining more number of levels with lesser number of cells...
The Fundamental target of this paper is to develop a structure that considers the customized ID of human activities using generally available mobile phones. Starting late, propelled cell phones, outfitted with a rich course of action of sensors, are researched as choice stages for human development affirmation. In this paper, the accelerometer, sensor is utilized for human movement distinguishing...
A cryptographic system uses two dissimilar keys — a public key known to all and a private key known only to the receiver of the message. Encryption of the data uses public key while decryption uses both public and private keys. So in this method all parties need a key pair for conversing with any other interactive parties. RSA is a generally known asymmetric cryptography algorithm. Modified RSA is...
Pressure switches are the most important entities used in the process industry. A pressure switch is an instrument designed to have a switching action on the process pressure. This paper gives a detailed study and analysis of the pressure switch. This article also throws some light on various kinds of routine and type tests performed on the pressure switch, to ensure the proper functioning of the...
The Modern advancement in the telecommunication networks have created worldwide data traffic challenge. Optical Fiber Communication Network can address such challenges by increasing bandwidths and data transfer rate of laser sources by effective ultra short fast pulses utilization. Generation of such ultrafast and short pulses has redefined the entire fiber laser source systems. Mode locked fiber...
Rapid advances in the technologies of wireless communication have led to the evolution and empowerment of Wireless Body Area Network (WBAN). The health care applications are improved by using WBAN with the usage of different variety of sensors for monitoring the patient in order to diagnose any life threatening diseases. In recent past, several experts have concentrated in building system architecture...
Tuberculosis (TB) is an infectious disease caused by mycobacterium which can be diagnosed by analyzing medical test report of patient that take more than a month to get the result. The aim of this study is to propose a solution which can be used to identify TB's presence and start treating such suspected patients. In this paper, we propose a method to use city block measure for segmenting x-ray image...
Subthreshold design method is a prominent method for designing of ultra-low power design methods. SRAM is an significant component in these systems consuming significant portion under power budget. Operation of 6T SRAM at sub or near-threshold voltages is unfeasible, due to degraded static noise margins (SNM) and poor robustness. In this paper, we analyze various alternative SRAM bit cells such as...
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