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Performance Evaluation of an Ultra Wideband Slot Antenna
In this paper, a rectangular stepped slot antenna with ultra-wideband is evaluated under change in feed position, feed dimension and slot dimensions. Average peak gain of the slot antenna is 4.25dB and the bandwidth is 12.59GHz.The antenna is linearly polarized with an axial ratio of 40dB. The feed is placed...
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Energy Efficient Consumption based Performance of AODV, DSR and ZRP Routing Protocol in MANET
This Mobile Ad hoc NETworks (MANETs) is gaining importance because of their flexibility, mobility and ability to work with a limited infrastructure. In multi-hop wireless network, proper utilization of battery power is very much necessary to maintain network connectivity. In order to overcome the network from inefficient routing problem, this...
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Performance Evaluation of Rake Receiver in CDMA20001x Mobile Cellular Radio Network
Code Division Multiple Access 20001x (CDMA20001x), a widely accepted third generation interface is based on Direct Sequence (DS) code division multiple access technology. The capacity of DS-CDMA systems is limited by distortions due to Multiple Access Interference (MAI). The phenomenon of multipath propagation has also contributed significantly towards deterioration of...
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With the advent of modern telecommunication systems with several devices integrated on the same circuit board, the noise and interference related issues have become more critical than ever. In recent years, metamaterials have been utilized in different ways to mitigate the coplanar noise and unwanted signal interference. This paper investigates...
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Dual Band Notched Square Monopole Antenna with Wide Bandwidth for UWB Applications
A compact Ultra WideBand (UWB) monopole antenna with dual band-notched characteristics is presented. The antenna consists a square radiating patch with L shaped slots on the radiation patch and a U shaped slot as the feedline. By cutting two c-shaped slots in the ground plane, additional resonance is excited and...
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Spectrum Sensing in Cognitive Radio using Reconfigurable Antennas: A Literature Review
Cognitive Radio (CR), including software defined radio enabling technology, is suggested to realize a flexible and efficient usage of spectrum. In this paper, the authors present a review of the recent advances in spectrum sensing in CR. For the front end Radio Frequency (RF) transceivers hardware design and algorithms are...
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Antenna Array Synthesis for Suppressed Side Lobe Level Using Combination of Global and Local Search
Multiple identical antennas can be arranged in space and interconnected to produce directional radiation pattern. Such a configuration is referred to as an antenna array, or simply an array. This paper presents an optimization method for the synthesis of linear antenna array with non-uniform amplitude. Combination of global and local...
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In this paper, the authors present a defective ground plane wide band slotted patch antenna designed to detect partial discharges emitted from underground LV power cables. Two slots are incorporated into the patch antenna and band width expansion was investigated by the currents flowing through the patch antenna. The antenna...
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Energy-constrained wireless sensor networks have gained considerable research attention in recent years. In this paper, the authors analyze the energy harvesting capabilities of wireless sensor nodes with the transmitter and receiver antenna power. Simulations shows that received power and VRMS (induced voltage) are inversely proportional to the distance. Finally some...
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Train Accurate Localization Using Ultra Wide Band Radio and Time Reversal
In guided transport, the precise localization of trains is vital for nominal operation of the transport system. In a propagation environment such as a railway line, an effective localization sensor is complex to design since it must operate in the presence of many fixed and mobile obstacles constituted by the...
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