Rajesh Khanna

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A microstrip patch antenna for Wi-Max and GSM application is proposed. The antenna has a frequency bandwidth of 1. 24 GHz (4. 6053 GHz – 5. 8481 GHz) for WLAN and Wi-Max and 1. 04 GHz (6. 124 GHz – 7. 16 GHz) for Satellite application. The microstrip antenna has a planar geometry and consists of a defected ground, a substrate, a patch, a feed, one slot in(More)
This paper gives the construction and parametric analysis of low loss RF MEMS switch at low DC frequencies up to 8GHz which support reconfigurable antenna devices. The switch used here exhibit excellent RF characteristics in terms of power and current consumption with typical pull-in voltages lies between 1.912 to 2.125V. The switch also exhibit low(More)
A microstrip patch antenna for WLAN application is proposed. The antenna has a frequency bandwidth of 196 MHz (5103MHz 5300 MHz). The microstrip antenna has a planar geometry and consists of a ground, a substrate, a patch and a feed. The basic theory and design are analyzed, and simulation using CST Microwave Studio commercial software is employed to(More)
A novel dual-band design of a finite ground coplanar waveguide (CPW)-fed monopole antenna is presented for simultaneously satisfying wireless local area network (WLAN) and worldwide interoperability for Microwave Access (WiMAX) applications. The proposed antenna, comprising a rectangular planar patch element embedded with two L shaped slots and stair shape(More)
QoS means providing consistent, predictable data delivery service. QoS is dealt with providing real-time (e.g., voice) as well as non-real-time services. Real time services are required to be more dominant over non real time for QoS prospective. In this paper a fuzzy based approach is presented using ns-2 for handover between UMTS and WLAN networks. It has(More)
Abstract: This paper presents the basic design of a microstrip patch antenna with aperture coupling. This design is simulated using CST Microwave Studio 2009 software based on given operating frequency. The gain and Directivity of an antenna are 6.169dB and 5.580dBi at 5.8GHz & 7.699dB and 8.480dBi at 2GHz. The results are analyzed and discussed in terms of(More)
Low density parity check (LDPC) codes are one of the best error correcting codes in today’s coding world and are known to approach the Shannon limit. As with all other channel coding schemes, LDPC codes add redundancy to the uncoded input data to make it more immune to channel impairments. In addition to coding, the best modulation techniques available(More)