Microstrip Patch Antenna Array Design To Improve Better Gains

Available online at www.sciencedirect.comScienceDirectProcedia Computer Science 85 (2016) 401 – 409International Conference on Computational Modeling and Security (CMS 2016)Microstrip Patch Antenna Array Design toImprove Better GainsVasujadevi Midasala1, Dr. P. Siddaiah21Research Scholar, JNTUA, Ananthapuramu, Andhra Pradesh, IndiaProfessor & Principal, University College of Engineering & Technology, Acharya Nagarjuna University, Guntur2AbstractThis paper presents a 3x3 antenna array of ractangular topology is designed to operate at Ku Band. The antenna has beendesigned as arrays of patches, wKHUH QXPEHU RI HOHPHQWV VSDFLQJ¶V DQG IHHGLQJ FXUUHQWV KDV EHHQ RSWLPL]HG WR IXOILO WKH requirements of low side lobe level and good cross polarization. The operating frequency of array is from 12 to 18 GHz. Theantenna array has been designed and simulated on FR4 Substrate with dielectric constant of 4.4. This paper presents that, thedetail steps of designing and simulating the rectangular patch antenna and rectangular patch antenna Array in Ku-band. Thedesign is analysed by FEM based HFSS 14.0 by which return loss, 3D polar plot, Directivity, VSWR and Gain of the antenna arecomputed. The software simulated results are shows that the proposed antenna array provides good performance in terms ofreturn loss, VSWR and Gain.2015TheTheAuthors.Authors.PublishedElsevier 2016Publishedby byElsevierB.V.B.V.This is an open access article under the CC BY-NC-ND licensePeer-review under responsibility of organizing committee of the 2016 International Conference on Computational Modeling .0/).Peer-reviewunder2016).responsibility of the Organizing Committee of CMS 2016Security (CMSKeywords: Microstrip Antenna, Rectangular Patch Antenna, HFSS 14.0, Return Loss, VSWR, 3D Polar Plot, Directivity, Gain;1. IntroductionAntenna Array Also called an array antenna, antenna arrays are several antennas connected & arranged in a regularstructure to form a single antenna. also Phased array antenna (PAA) is a multiple antenna system, in which, that theradiation pattern can be reinforced in a particular direction & suppressed in undesired directions. The direction ofphased array radiation can be electronically steered obviating the need for any mechanical rotation. These uniquecapabilities found that the phased arrays a broad range of applications since the advent of this advanced technology.* Vasujadevi Midasala, Tel.: 91-9989545567;E-mail address: vasujadevi@gmail.com1877-0509 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND nd/4.0/).Peer-review under responsibility of the Organizing Committee of CMS 2016doi:10.1016/j.procs.2016.05.181

402Vasujadevi Midasala and P. Siddaiah / Procedia Computer Science 85 (2016) 401 – 409In Modern days Communication Systems, these Antenna arrays plays an important role to create a communicationlink. Microstrip Patch antennas are widely used in wireless communication systems because of they have low profile,of light weight, low cost, conformal design, low power handling capacity and easy to integrate and fabricate. Theycan be designed in a variety of shapes in order to obtain enhanced gain and bandwidth. Microstrip Patch Antennaimplementations is a mile stone in wireless communication system designs [1].Phased array antennas are traditionally used for military radar applications. Another important one that can take theadvantage of phased arrays is automotive collision avoidance radar or adaptive cruise control technology.The major Advantages of Antenna Arrays are; Increase the overall gain.Provide diversity reception.Cancel out interference from a particular set of directions.³Steer" the array so that it is most sensitive in a particular direction.Determine the direction of arrival of the incoming signals.To maximize the Signal to Interference Plus Noise Ratio (SINR).2. Design of Proposed AntennaIn this paper 3x3 Rectangular Microstrip Antenna Array is Design at 13GHz frequency has been designed andsimulated at Ku-band.Fig.1 3x3 Rectangular Microstrip Patch Antenna Array Design (Cropped Image)

Vasujadevi Midasala and P. Siddaiah / Procedia Computer Science 85 (2016) 401 – 409Fig.2 3x3 Rectangular Microstrip Patch Antenna Array Design (original Image from HFSS 14.0)The above figures can represents, 3x3 Microstrip Patch Antenna Array Design. Fig.1 represents the croppedimage of proposed antenna array. fig. 2 represents the 3x3 Rectangular Microstrip Patch Antenna Array originalImage from HFSS 14.0. for this design the Method used to analyze antenna is FEM (Finite Element Method) andthe Excitation Technique Used is Probe Feeding. The spacing between antenna elements LV Ȝ fig.3 and Fig.4 can explain about the details of setup & sweep of proposed design.Design Setup:Fig.3 Setup of 3x3 Rectangular Microstrip Patch Antenna Array403

404Vasujadevi Midasala and P. Siddaiah / Procedia Computer Science 85 (2016) 401 – 409Sweep:Fig.4 Sweep of 3x3 Rectangular Microstrip Patch Antenna ArrayThe Antenna design considerations are also shown below:Design Considerations:Array Size :3X3Substrate material: FR4Relative permititvity 2.2, loss tangent 0.0009Position "-subX/2 ,-subY/2 ,0cm""-1.15cm , -0.95cm , 0cm"XSize subX2.3cmYSize subY1.9cm62milZSize subHPatch:Position "-patchX/2 ,-patchY/2 ,subH""-0.455cm, -0.335cm , 62mil"AxisZXSize patchX 0.91cmYSize patchY 0.67cm

Vasujadevi Midasala and P. Siddaiah / Procedia Computer Science 85 (2016) 401 – 409The below table can give the corresponding values of Design Parameters.TABLE : Design Parameters & Corresponding ValuesDesign ParameterOperating FrequencyDielectric Constant of the substrateheight of the substrateLength of substrateWidth of substrateHeight of coax pinRadius of coax pinArray Size (NxM)Value13.333 GHz4.40.157 cm3 cm3 cm0.157 cm0.2 mm3x33. Simulation Results using HFSS 14.0The below figures can represents the return loss, 3D polar plot, VSWR, Directivity, Radiation Pattern, E-FieldRadiation Pattern & H-Field Radiation Pattern is obtained by using HFSS 14.0.Return Loss:Return loss is a measure of that, how well lines/devices are matched.Fig.5 Return Loss for 3x3 Patch Antenna ArrayThe above figure can represents the Return Loss of 3x3 patch antenna Array have a frequency at 13.33 Hz.405

406Vasujadevi Midasala and P. Siddaiah / Procedia Computer Science 85 (2016) 401 – 4093D Polar Plot:Fig.6 3D Polar Plot for 3x3 Patch Antenna ArrayThe above figure can represents the 3D polar plot of 3x3 patch antenna Array have a gain at 17.29 dbVSWR:Voltage standing wave ratio commonly known as VSWR is a way to measure transmission line imperfections. fromthe below figure this paper got VSWR as 0.7807 for the corresponding frequency of 13.33 Hz.Fig.7 VSWR for 3x3 Patch Antenna Array

Vasujadevi Midasala and P. Siddaiah / Procedia Computer Science 85 (2016) 401 – 409Dirctivity:Fig.8 Dirctivity of 3x3 Patch Antenna ArrayRadiation Pattern:Fig.9 Radiation Pattern of 3x3 Patch Antenna ArrayE-Field Radiation pattern:Fig.10 E-Field Radiation Pattern of 3x3 Patch Antenna Array407

408Vasujadevi Midasala and P. Siddaiah / Procedia Computer Science 85 (2016) 401 – 409H-Field Radiation patternFig.11 H-Field Radiation Pattern of 3x3 Patch Antenna ArrayThe above figures can represents the Screen shots of Directivity, Radiation Pattern of E-Field & H-Fields.4. ConclusionsAntenna array concept is used to improve the better gain of different antennas by nullify the side lobes. This paperexplains about a 3x3 Rectangular microstrip patch antenna Arrays using HFSS 14.0. For the proposed design thispaper got a high gain of 17.29 db, return loss at 13.33 hz and the VSWR value is 0.7807 (value 2). By usingantenna arrays this paper gets high gain. In future this paper concentrates on manufacture of the proposed design andtesting will be done by network analyzer.AcknowledgementsI would like to thank the higher authorities of JNTUA and Acharya Nagarjuna University to use ISRO DataAnaysis Centre and R & D Laboratories.References1.2.3.M. Vasujadevi, Dr. P. Siddaiah and S Nagakishore Bhavanam "Rectangular Patch Antenna Array Design at 13GHz Frequency Using HFSS14.0". Springer India : Advancements of Medical Electronics, Chapter : 24, ISSN : 2195-2728, ISBN : 978-81-322-2255-2, ISBN : 978-81322-2256-9 (eBook), Springer Book Publications, January 2015, pp.263-270.J. S. Herd and A. J. Fenn, ³Design considerations for space-based radar phased arrays, in Proc. IEEE MTT-S Int. Microw. Symp. Dig., Jun12 17, 2005, p. 4.T. Clark and E. Jaska, ³Million element ISIS array, in Proc. IEEE Int. Symp. Phased Array Syst. Technol. (ARRAY),Oct.12-15,2010,pp.29 36.

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Antenna Array Also called an array antenna, antenna arrays are several antennas connected & arranged in a regular structure to form a single antenna. also Phased array antenna (PAA) is a multiple antenna system, in which, that the radiation pattern can be reinforced in a particular direction &