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Articles by J.P. Saini
Total Records ( 2 ) for J.P. Saini
  Jay Prakash , Rakesh Kumar and J.P. Saini
  Desire to connect various portable devices such as laptops, PDAs, smart phones etc with internet at anytime, anywhere and any how lead to the development of wireless networks. Mobile ad hoc networks (MANETs) consists of such devices, which are portable in nature such as laptops, mobile phones or personal digital assistants for initiation of communication. A large number of ongoing research and development in the area of MANET is constrained to the single networks and stand alone. Mobile ad hoc networks require the interconnection with internet because a broad range of services and applications rely on wired infrastructure networks now-a-days. Therefore, there is a necessity that ad hoc networks should have access to wired networks along with their services. This interconnection of MANET and internet enhance the plasticity of networking and improve the infrastructure network’s coverage area. Many solutions have been proposed by researcher for this integration, but which solution among these are comparatively better is still vague. It is mandatory for a node of ad hoc network to discover and select the most appropriate internet gateway in order to achieve the access to internet. This study focused on the various issues and challenges of internet integration along with the different proposed solutions on gateway discovery and issues associated with them.
  Ravi Kant Prasad , D.K. Srivastava and J.P. Saini
  A multi-band compact rectangular microstrip patch antenna is proposed for IEEE 802.11 standards. Proposed antenna covers all five distinct frequency ranges 2.4 Ghz (IEEE 802.11 b/g/n), 3.65 GHz (IEEE 802.11 y), 4.9 Ghz (IEEE 802.11 j), 5 GHz (IEEE 802.11 a/h/j/n/ac) and 5.9 GHz (IEEE 802.11 p) bands. The design frequency is 2.42 GHz applicable for WLAN, UMTS and Wi-MAX application. The three resonance frequencies are observed to be 2.58, 3.74 and 5.12 Ghz. The return loss of proposed antenna is -16.41 dB at 2.42 GHz and -33.28, -15.6 and -19.02 dB at respective resonance frequencies. The simulated fractional -10 dB bandwidth of lower, middle and upper resonance frequencies are 42.25% (1.829-2.809 GHz), 10.9% (3.487 -3.889 GHz) and 20.89 % (4.844-5.974 GHz), respectively. The maximum gain, directivity, antenna efficiency and radiation efficiency of proposed antenna are 6.05 and 6.6 dBi, 94.91 and 98.56%, respectively. The experimental fractional -10 dB bandwidth are 52.42% (2.28-3.9 GHz) and 11.01% (5.15-5.75 GHz) with 2.85 and 5.43 GHz resonance frequency respectively. Both simulated and experimental results of proposed antenna cover all five frequency ranges issued by IEEE 802.11 WLAN standards which show good agreement. The analysis of rectangular patch antenna is performed with strip line feed by using IE3D mentor graphics simulation software.
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