Design and Parametric Study of Microstrip-fed Vivaldi Antenna for Body Area Network

International Research Journal of Engineering and Technology (IRJET) e ISSN:2395 0056

Volume: 09 Issue: 05 | May 2022 www.irjet.net p ISSN:2395 0072

Design and Parametric Study of Microstrip-fed Vivaldi Antenna for Body Area Network

1(M.Tech Scholar ) Department of Electronics and Comm, RITS, Bhopal (M.P.), India

2Associate Professor, Department of Electronics and Comm, RITS, Bhopal (M.P.), India ***

ABSTRACT:

Vivaldi antenna with high-frequency selectivity is organized and examined. This paper consolidates the effects of antenna plan parameters on its execution. 3D electromagnetic generation programming CST was used to reenact distinctive sizes of three important structure parameters. By looking at a couple of antenna basic parametric results, including return loss (S parameter), voltage standing wave ratio (VSWR), reference impedance and substrate parameters expect a basic occupation in antenna execution. Results exhibit that incredible frequency selectivity of the multiband from 4.546GHz to 5.784GHz is recognized, and the antenna shows extraordinary impedance arrange, high radiation gain, and wonderful radiation directivity in the multiband. Both the proliferation and estimation results give incredible understanding.

KEYWORDS CST, VSWR, S Parameter, FR4, Return loss, 3D

I. INTRODUCTION

Bodyareanetwork(BAN),additionallyalludedtoasaremotebodyregionarrange(WBAN)orabodysensorarrange(BSN)or a restorative body zone arrange (MBAN), is a remote system of wearable registering gadgets. Boycott gadgets might be installedinsidethebody,inserts,mightbesurface mountedonthebodyinasettledpositionWearableinnovationormightbe went with gadgets which people can convey in various positions, in garments pockets, by hand or in different sacks. While there is a pattern towards the scaling down of gadgets, specifically, systems comprising of a few scaled down body sensor units(BSUs)togetherwithasolitarybodyfocalunit.

Fig.1:Wirelessbodyareanetwork

IntroductoryutilizationsofBANsarerequiredtoshowupprincipallyinthehumanservicesspace,particularlyforpersistent observing and logging essential parameters of patients experiencing perpetual ailments, for example, diabetes, asthma and heart assaults. A Boycott arrange set up on a patient can alarm the doctor's facility, even before they show at least a bit of kindnessassault,throughestimating changesintheirfundamental signs.ABoycott organizeona diabetic patientcouldauto infuseinsulinthroughasiphon,whentheirinsulinleveldecays.

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A. WEARABLE ANTENNA

Later improvements and innovative headways in remote correspondence, Micro Electro Mechanical Systems (MEMS) innovationandcoordinatedcircuitshasempoweredlow control,smart,scaleddown,obtrusive/non intrusivesmallscaleand nano innovation sensor hubs deliberately put in or around the human body to be utilized in different applications, for example, individual wellbeing observing. This energizing new territory of research is called Remote Body Zone Systems (WBANs)andusethedevelopingIEEE802.15.6andIEEE802.15.4jmodels,explicitlyinstitutionalizedfortherapeuticWBANs. The point of WBANs is to streamline and enhance speed, precision, and unwavering quality of correspondence of sensors/actuatorsinside,on,andinthequick nearness ofa humanbody.Thehuge extentofdifficultiesrelatedwith WBANs haspromptedvariousdistributions.Inthispaper,weoverviewthepresentconditionof specialtyofWBANsdependentonthe most recent measures and productions. Open issues and difficulties inside every region are additionally investigated as a wellspringofinspirationtowardsfutureimprovementsinWBANs.

Fig.2:Wearableantenna

Wearablecontraptionshavetoagreatdegreewideapplication.Beforeitwasfamiliarwithcustomerexhibit,wearabledevices are used as a piece of the military development. By then, it has been associated in other field, for instance, gaming, music, preparing, transportation, ineptitudes, health and prosperity. In these fields, the need is to merge the limits expected to a devicethatcanbeusedeffectivelyinstepbysteplives.

II. LITERATURE SURVEY

D.Yang,J.HuandS.Liu[1]proposeapositionofsafetyultra wideband(UWB)antennaforremotebodyterritorysystems.The proposed antenna is low weight and simple to deliver by printed circuit board producing. Improved state of the radiation patch and shorted top stacking patches are acquainted with expanding the bandwidth and lessen the profile of the antenna. Thetallnessoftheantennais0.05λ0,where

λ 0isthefree spacewavelengthatthemostminimalworkingfrequency.Thereproducedandestimatedresultsdemonstrate that an upgraded impedance bandwidth of about 162% in the scope of 2.5 to 24 GHz (S 11 <; 10 dB) is accomplished. Furthermore,theimpactofthehumanbodytotheproposedantennaisnegligible.Thetime areaconductofthepositionofthe safetyUWBantennaistried,andtheoutcomesdemonstrateapalatableexecutionintransmittingandgettingbeatsignals.

W.Amer,GuiYunTian[2]showsanovelantennaplanfortheultrawidebandbodyterritoryarrangeapplications.Theplanis made out of two Vivaldi shapes put inverse to one another on a similar substrate, which accomplishes steady impedance coordinating over a wide band and uniform radiation design. To decrease the retrogressive radiation, two kinds of reflector wereutilized:levelandbended.Resultsdemonstratethatutilizingabendedreflectorimprovestheradiationdesignonalarge portionoftheUWBwithlessimpactontheantennaimpedancecontrastedwiththelevelreflector.

M. Y. ElSalamouny [3] proposes two novel conservative plans of low profile multi band microstrip antennas. The first can work in ISM bands (2.4 GHz and 5.8 GHz), which makes it reasonable for Remote Body Zone System (WBAN) medicinal applications.Thenagain,thesecondstructureexecutesstackingofantenna tosuchanextentthatthesubsequentnovel plan

International Research Journal of Engineering and Technology (IRJET) e ISSN:2395 0056

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works ideally at 3.5GHz and 7.5GHz, which makes it reasonable for Ultra Wide Band (UWB) applications. The two antenna plansareminimalinsize,thatis,the generalsize ofthe primaryantenna isjust11.54mm3, whilethesecondis 25.16mm3. The two antenna structures are reenacted on skin radiation box, so as to permit progressively exact forecast of the antenna execution when utilized in medicinal implantable gadgets. Aside from the minimized size, both antenna structures deliver a base Explicit Assimilation Rate (SAR) which conforms to IEEE standard wellbeing rules, which is essential for shielding patientsfromelectromagneticharm.

W.JeongandJ.Choi,[4]proposesapositionofsafetyUWBantennawithconeshapedradiationforon bodycorrespondences isproposed.Theantennahasgenerallyspeakingelementsof64mm×64mm×6 mm(0.64λ0×0.64λ0×0.06λ0at3GHz) in the Motivation Radio UWB (3.1 GHz 10.6 GHz) band. The proposed antenna is made out of a mono cone and a TM41 higher arrangemodeshortedringpatch.Thereenactedoutcomesdemonstratethattheproposedantennaacquiresmonopole like radiation exhibitions in the entire working frequency band. The radiation example of the proposed antenna on the apparitionislikethatinfreespacesothattheon bodyWBANapplicationcanbepractical.

A.Zaric,J.R.Costa[5]showsanextremelyminimizedlow profile(37.6mm×27mm×3.1mm)unidirectionalUWBantennais proposedforremotebodyterritoryorganize(WBAN)confinementapplicationsbyconcentratingonitsrunningexecutionand motivationconstancyintimeareanotwithstandingfrequencyspaceattributes.Theantennaisinsusceptibletocoordinateskin contact, and furthermore shows great frequency and time area properties in free space or at any separation to a body: reflectioncoefficientandradiationdesignversatilitytobodyimpact;levelexchangeworkplentifulnessandstraightstage over the ideal frequency band from6 GHz to 9GHz. Prevalenttimearea executionis shown in reenactmentand estimations with normaldriveconstancyof97%inbothfreespaceandwhenputat0mmor3mmoverthebody.

A. Zaric, J. R. Costa [6] sows a position of safety unidirectional UWB antenna for WBAN (Remote Body Zone Systems) MotivationRadio(IR)applicationsisproposedwithusefulbandfrom7GHzto10.7GHz.Reproducedreflectioncoefficientin freespaceandwhen0mm, 3mm,or7mmoverahumanbodydisplaydemonstratethatthebodyimpactisnegligible.Time area investigation of heartbeat devotion, of vital significance for IR UWB, demonstrates normal loyalty of 98% in free space andwhen3mmor0mmoverthebody.

Table1:Summeryofreviews

Author Year of Frequency ObjectiveRange(in GHz) name Publication

B.

Low-weight and

easy to produce bySivasha Dec2017 2.5to24 printed circuit board manufacturing

Novel antenna R.Herzi design for ultra Nov2017 2to5 wideband body area network applications. Novel compact D.Yang July2018 2.4to5.8 designs of low profile multi band microstripantennas

J.Shan

Monopole like Nov2017 3.1to10.6 radiation

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performances

Novel folded ultra W.Jeong Nov2015 3.1to

wideband antenna for Wireless Body AreaNetwork

III. PROBLEM FORMULATION

From the above writing survey, it can reasoned that the primary issue with the Vivaldi microstrip patch antenna is Thin bandwidth, bring down gain (6 dB), extensive ohmic loss in the feed structure of cluster, polarization virtue is hard to accomplish, bring down power taking care of ability and so forth in the light of writing study it can detail an issue of lower bandwidth and low return loss is the fundamental weaknesses. No proficient antenna structure for wearable antenna over bodyzoneorganizeapplications.

IV. PROPOSED DESIGN

Infigure3,demonstratingtopperspectiveofproposedVivaldimicrostrippatchantenna,onesideofadielectricsubstrategoes about as a transmitting patch and opposite side of substrate goes about as ground plane. Top perspective of a rectangular patch antenna with coaxial feed has. Patch and ground plane together makes bordering fields and this field is in charge of makingtheradiationfromtheantenna.

Fig.

3:TopviewofproposedVivaldiantenna

Thestructureofavivaldimicrostripantennawhichhasawidebandwidthwithdirectionalradiationdesigntakesashotat3.1 to 10.7 GHz and utilizing less expensive substrate. Substrates utilized for vivaldi microstrip antenna vivaldi is FR4 with a dielectric steady of 4.3 and a thickness of 1.6 mm. In view of the reenactment results we acquired that the antenna configuration has frequency extend 3.1 10.7 GHz for return loss not exactly 10 dB with a directional radiation design. This antennagainis4.8to8dBiwiththebiggestmeasurementis50mmx40mm.

V. SIMULATION RESULT

So as to acknowledge multiband antenna, a wide assortment of antenna types, which utilizes diverse multiband systems, is utilized. The most broadly utilized procedure for acquiring multiband antenna system is the use of different resounding structures.Thedifferentfullstructurestrategyislikewisefrequentlyutilizedinbodyzonearrangecorrespondencesystems.

International Research Journal of Engineering and Technology (IRJET) e ISSN:2395 0056

Fig.4:Simulationandfieldsofproposedantenna

Figure 4, demonstrating reproduced proposed antenna in CST microwave studio, it is a particular device for the quick and precise3DEMreenactmentofhighfrequencyissues.Alongsideawideapplicationruninvariousfield.

A. S11 PARAMETER AND RETURN LOSS

Returnlossisthedistinction,indB,amongforwardandreflectedpowerestimatedatsomerandompointinaRFsystemand, asSWR,doesnotdifferwiththepowerlevelatwhichitisestimated.Figure5,demonstratestheReturnLoss(S11)parameters fortheproposedantenna,whichspeakstothemultibandbandsoffrequencyforwhichtheantennastructuredisadvancedi.e. frequenciesgoingfrom4GHzto7GHzwithS11esteempast 10dBandthescopeoffrequenciesaccordingtotheoutcomes demonstrates that it has a decent bandwidth when contrasted with other microstrip antenna. The got estimation of S11 for 4.546GHz is 36.37 db and 5.784GHz is 34.45db. Here 4.546GHz and 5.784GHz is thunderous frequency, where antenna proficiencyishigher.Qualities 36.37dband 34.45dbarereturnlossopenly,itismoreprominentthan 10db,soit'sgreat estimationofreturnloss.

Fig.5:SparameterandReturnloss

B. BANDWIDTH

Bandwidth, for a system, could be the scope of frequencies over which the system delivers a predefined dimension of execution. A not so much strict but rather more essentially valuable definition will allude to the frequencies past which Executioniscorrupted.Thebandwidthofanantennaischaracterizedas"thescopeoffrequenciesinsidewhichtheexecution

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oftheantenna,regardingsometrademark,complieswithapredefinedstandard."Forbroadbandantennas,the bandwidthis typicallycommunicatedastheratiooftheupper to bringdownfrequenciesofsatisfactoryoperation.

Fig.6:Bandwidthcalculation

For broadband antennas,the bandwidth iscommunicatedasa level of thefrequencydistinction (upperless lower)over the middlefrequencyofthebandwidth.Thebandwidthofproposedantennais670.48MHz,(4.262GHz 4.9325GHz),forfirstband and615.55MHz,(5.9888GHz 5.3733GHz),forsecondband.

C. VOLTAGE STANDING WAVE RATIO

VSWR (Voltage Standing Wave Ratio), is a proportion of how productively radio frequency control is transmitted from a powersource,throughatransmissionline,intoaheap(forinstance,froma powerintensifierthroughatransmissionline,to anantenna).Inaperfectsystem,100%ofthevitalityistransmitted.

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Fig.7:VoltageStandingWaveRatios VSWRmustlieinthescopeof1 2,whichhasbeenaccomplished for the frequencies 4.915GHzand6.018GHz. The incentive for VSWR is 1.030 and1.038separately.

Fig.8:Radiationpattern

TableII:ResultsummaryofproposedAntenna

International Research Journal of Engineering and Technology (IRJET) e ISSN:2395 0056

TableIII.Comparisonofproposeddesignresultwithpreviousresult. Parameter Previous Proposed work Work Designshape Vivaldi Vivaldi Bandwidth 180MHz 670MHz

ReturnLoss 29db and 36.37db and 27.5db 34.45db Resonant 4.35GHz 4.5GHzand Frequency and6.59GHz 5.7GHz VSWR >1 1.009

VI.CONCLUSION

Remote Body Region System (WBAN) is one of created innovation that bolsters telemedical administrations. Up until this point,theantenna'sexecutionisforthemostpartinfluencedbyahumanbodywhenitisconnectedclosetothehumanbody. In the paper, the new sorts of proposed antenna (Vivaldi microstrip patch antenna), which are increasingly fitting for body zoneorganizeapplications.

Atwofoldband,therectangularmicrostrippatchantennaisplannedandrecreatedutilizingCSTreenactmentprogramming. Thereproductionresultsaredisplayedandtalkedabout.Structureofproposedantennaisstraightforwardandconservative in size of approx 40×40 ×1.6 〖mm〗^3. the smaller size of planned antenna makes it simple to be fused in little gadgets. Results demonstrate that the frequency bandwidth covers WBAN (4 7) GHz, at focus frequencies 4.915 GHz and 6.018GHz individually for VSWR under 2, and S11 not exactly 10 dB. The last outcomes fulfill every one of the parameters of a proficient antenna. The structured antenna works proficiently under all conditions with low return loss and appropriate impedancematching.

REFERENCES

[1]. D.Yang,J.HuandS.Liu,"ALowProfileUWBAntennaforWBANApplications", IEEE Access,Vol.6,pp.25214 25219, 2018.

[2]. W.Amer,GuiYunTianandC.Tsimenidis,"Anovel,low profile,directionalUWBantennaforWBAN",Loughborough AntennasandPropagationConference(LAPC),Loughborough,pp.708 710,2014

[3]. M. Y. ElSalamouny and R. M. Shubair, "Novel design of compact low profile multi band microstrip antennas for medicalapplications",LoughboroughAntennas&PropagationConference(LAPC),Loughborough,pp.1 4,2015

[4]. W. Jeong and J. Choi, "A low profile IR UWB antenna with conical radiation pattern for on body communications", IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, Vancouver, BC, pp.2023 2024,2015

[5]. A.Zaric,J.R.CostaandC.A.Fernandes,"DesignandRangingPerformanceofaLow profileUWBAntenna for WBAN LocalizationApplications",IEEETransactionsonAntennasandPropagation,Vol.62(12),pp.6420 6427,2014.

[6]. A.Zaric,J.R.CostaandC.A.Fernandes,"LowprofileUWBantennaforWirelessBodyAreaNetworks", 8thEuropean ConferenceonAntennasandPropagation(EuCAP2014),TheHague,2014

Volume: 09 Issue: 05 | May 2022 www.irjet.net p ISSN:2395 0072 © 2022, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page2242

International Research Journal of Engineering and Technology (IRJET) e ISSN:2395 0056

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[7]. K. Yekeh Yazdandoost, "UWB loop antenna for in body Wireless Body Area Network" 7th European Conference on AntennasandPropagation(EuCAP),Gothenburg,pp.1138 1141,2013

[8]. C. Kang, S. Wu and J. Tarng, "A Novel Folded UWB Antenna for Wireless Body Area Network", IEEE Transactions on AntennasandPropagation,Vol.60(2),pp.1139 1142,2012.

[9]. Q. Wang, R. Hahnel, H. Zhang and D. Plettemeier, "On body directional antenna design for in body UWB wireless communication",6thEuropeanConferenceonAntennasandPropagation(EUCAP),Prague,pp.1011 1015,2012

[10]. J.Shan,A.XuandJ.Lin,"Aparametricstudyofmicrostrip fedVivaldiantenna",3rdIEEEInternationalConferenceon ComputerandCommunications(ICCC),Chengdu,pp.1099 1103,2017

[11]. R.Herzi,M.Bouslama,L.OsmanandA.Gharsallah,"DesignofacompactantipodalVivaldiantennawithband rejected characteristic",MediterraneanMicrowaveSymposium(MMS),Marseille,pp.1 4,2017

[12]. Y. Dong, J. Choi and T. Itoh, "Vivaldi Antenna With Pattern Diversity for 0.7 to 2.7 GHz Cellular Band Applications", IEEEAntennasandWirelessPropagationLetters,Vol.17(2),pp.247 250,2018.

[13]. B. Sivashanmugavalli and B. Vijayalakshmi, "Performance measures of Vivaldi antenna with parasitic elements", International Conference on Wireless Communications, Signal Processing and Networking (WiSPNET), Chennai, pp. 25 28, 2017

[14]. E.N.F.S.E.Embong,K.N.A.RaniandH.A.Rahim,"Thewearabletextile basedmicrostrippatchantennapreliminary design and development", IEEE 3rd International Conference on Engineering Technologies and Social Sciences (ICETSS), Bangkok,pp.1 5,2017

[15]. S. Ha and C. W. Jung, "Reconfigurable Beam Steering Using a Microstrip Patch Antenna With a U Slot for Wearable FabricApplications",IEEEAntennasandWirelessPropagationLetters,Vol.10,pp.1228 1231,2011.