National Journal of Antennas and Propagation 2022-06-23T16:57:57+00:00 Dr.A.Surendar Open Journal Systems <p>The <strong>National Journal of Antennas and Propagation </strong>is a peer-reviewed journal that publishes original theoretical and applied papers on all aspects of Communications, Antenna, Propagation and networking technologies.<br />ISSN : <a href="">2582-2659</a></p> <p>The topics to be covered include but are not limited to:</p> <p><strong>Antenna</strong> analysis and design, antenna measurement control and testing, smart reconfigurable and adaptive antennas and multiple antenna systems for spatial, polarization, pattern and other diversity applications, novel materials for enhanced performance,</p> <p><strong>Propagation</strong>, interaction of electromagnetic waves with discrete and continuous media, radio astronomy and propagation and radiation aspects of terrestrial and spacebased communications, theoretical and computational methods of predicting propagation and sensing, propagation and sensing measurements in all media, interaction of electromagnetic waves with biological tissue, characterization of propagation media and applications of propagation, multipath interference, channel modeling and propagation.</p> <p><strong>Communications</strong> and Information theory, multimedia signal processing, communication QoS and performance modelling, cross-layer design and optimization, communication software and services, protocol and algorithms for communications, communication network security, cognitive radio communications and networking, hardware architecture for communications and networking, emerging communication technology and standards, communications layers, internet protocols, internet telephony and VoIP, fading channel, mobile systems, services and applications, indoor communications and WLAN; superhighways, interworking and broadband VPN, spread spectrum communication.</p> Triple Frequency Micro Strip Patch Antenna Using Ground Slot Technique 2022-06-23T16:40:21+00:00 K.MADHUSUDHANA RAO M.N.D.KISHORE M.PAVAN YOGESH SK.ADAM SAHEB K.HEMANTH <p>A micro strip patch antenna for wireless communications had proposed in this paper. The proposed antenna operates at three frequencies at 3.3GHz, 6.3GHz and 9 GHz which are mostly used for WLAN (C band) and radar, satellite communications (X band). Two rectangular slots are placed on the ground in order at achieve dual frequencies with good return loss less than -17dB and VSWR less than 1.4. The obtained results are simulated using ANSOFT HFSS software.</p> 2021-09-11T00:00:00+00:00 Copyright (c) 2022 Sector Beam Synthesis in Linear Antenna Arrays using Social Group Optimization Algorithm 2022-06-23T16:46:03+00:00 S.SRINIVASAREDDY Y.V.NARAYANA D.KRISHNA <p>The sector beam based radiation patterns have almost flat top in a two dimensional pattern. It is always a challenging task to synthesize such patterns. In this paper, the sector beams are generated using recently developed evolutionary computing tool known as social group optimization algorithm (SGOA). The technique involving both the amplitude and phase as design parameters is used and both the parameters of 20 elements of linear antenna array (LAA) are determined using the algorithm. The results are analysed in terms of radiation pattern plots. The simulations are carried out in Matlab.</p> 2021-09-11T00:00:00+00:00 Copyright (c) 2022 2*4 Circular &2*2 Rectangular Microstrip Patch Antenna Array of 4.2GHz for Satellite Applications 2022-06-23T16:51:07+00:00 SOWJANYA KESANA NELLURI MOUNIKA DIVYA SAI SRI MURUGUDU KORRAPATI GREESHMA SRI LAKSHMALA NAVYAMADHURI <p>Circular micro strip patch antenna array is designed at a frequency of 4.2 GHz. In this paper we are comparing 2x2 rectangular array and 2x4 circular array antenna with 1x4 circular array.2x4 circular array achieves more gain and better radiation pattern and return loss. This band of frequencies more suitable for satellite applications.</p> 2021-09-10T00:00:00+00:00 Copyright (c) 2022 Circularly Polarized Fractal Patch Antenna With Probe Feed Technique For Wi-Max Applications 2022-06-23T16:57:57+00:00 SOWJANYA KESANA NELLURE NAGA PREM SAI ONTERU YALLAIAH SOMAVARAPU SAIKRISHNA SHAIK KHADARVALI <p>Circularly polarized Fractal patch antennas at two frequency ranges are to be resonated in this paper. This fractal antenna is performed better by using probe feeding technique. Existing method is resonate at 3.4GHz and proposed method resonating at 2.5 and 3.4GHz frequency ranges. Ground dimensions are 40mm x40mm and substrate dimensions are 26mm x 26mm, and substrate material is RT/Duriod5880. The proposed method involves unit cell structure with a size of 10mm x 10mm. This Paper enhances the frequency ranges and improves the gain and better return loss. These range of frequency ranges mostly useful for Wi-max applications. All Parameters are simulated by using HFSS software.</p> 2021-09-07T00:00:00+00:00 Copyright (c) 2022