PERFORMANCE ANALYSIS OF MINIATURIZED …The antenna design and analysis by using transmission line model. The front view of proposed patch antenna for miniaturized size using re ector

PERFORMANCE ANALYSIS OFMINIATURIZED PATCH ANTENNAFOR WIRELESS APPLICATIONS

USING REFLECTOR

A.K.Thasleem Sulthana1, S.Vimala2,K.Saranya3, S.Sathiya4

1,2,3,4Assistant ProfessorK.Ramakrishnan College of Engineering,

Trichy, [email protected]

July 9, 2018

Abstract

In this work, the radiation attributes of the microstripbolstered rectangular fix receiving wire is dissected forWireless application. The dielectric substrate of FR4 isutilized and it has a dielectric permittivity of 4.4.Thecomposed reception apparatus has a straightforwardstructure and minimal size of 38 x 31.8 mm2. By utilizingHFSS, the proposed radio wire has been intended toreverberate at 2.4GHz.

Keywords: Reflector, Voltage Standing Wave Ratio(VSWR), Return loss, Gain, Rectangular patch, Microstipfeed.

1 INTRODUCTION

Wireless communication is among technologys biggestcontributions to mankind. The patch dipole antenna may play a

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very important role in mobile communication because thecomplete dimension reduction of the antenna. For size reductionof the antenna more number of techniques has been followed.

Microstrip antenna is a type of antenna consisting of adielectric substrate with relative permittivity and permeabilitywhere sandwiched between a ground plane and a conductingpatch. Graphical representation of Microstrip patch antenna isshown in Fig.1. The first step in designing of micro strip antennais to choose the suitable substrate material. There are varioustypes of substrate available in market that offers much flexibilityin the choice of a substrate for particular application. Therefore,Microstrip patch antennas are essential to providemulti-functional operations for wireless communication.Multiband antenna is operating only at distinct frequencies.

The advantages of the Microstrip reception apparatuses areminor size, little profile, and low weight, similar to all surfaces. Itstacks a next to no volume of the structure when mounting. Theyare straightforward and shoddy to fabricate utilizing currentprinted circuit innovation.

In [1] RT Duroid 5880 was used as a substrate. Here powerdivider and wideband phase shifter was used on the patch toresonate at 1.7 to 3.3GHz.The technique of coaxial feedingreduces the impedance bandwidth of an antenna.

In [2] Teflon was used as a substrate. This technique also limitsthe efficiency and impedance bandwidth of antenna. In [3] costs ofsubstrate was also very high, dielectric constant of the substrate isalso very high .This technique produces the impedance bandwidthof about 68%. In [4] magnetic substrates were used for reducingthe overall dimension of the antenna. An impurity in this substratereduces the bandwidth of an antenna. In [5] inverted F antennaprovides a large amount of size reduction but very small gain andalso impedance bandwidth was also very low. In [6] dual frequencypatch antenna designed by cutting U slot on the patch. This isalso reducing the size of Microstrip patch antenna. However thegain and impedance bandwidth, radiation efficiency of an antennadecreased by fractal shapes of the patches. In [7] stacked Microstrippatch antenna provided a complicated design and also fabricationwas very difficult. In [8] slotted complementary split ring resonatorsgives only small amount of size reduction. Impedance bandwidth

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was also very narrow. In [9] fractal shapes provided a difficultdesign. In [10] epoxy resin substrate was used. It provided theimpedance mismatch losses. Also this substrate was not accessiblein pure form.

In our work miniaturization of patch antenna presented forWireless application. This antenna consists of rectangle shapedpatch and reflector. And then antenna geometry has beenoptimized to cover the bandwidth for WLAN. The designedantenna was 90% lesser than the conventional patch antenna.Impedance bandwidth is also very high and very simple design,there is no complicated feeding technique used. Fabrication is alsovery simple. This is single layer single patch antenna. FR4substrate is used as a substrate. When comparing with othersubstrate, FR4 is very low cost.

2 ANTENNA CONFIGURATION

The antenna design and analysis by using transmission line model.The front view of proposed patch antenna for miniaturized sizeusing reflector is shown in Fig 2.Parameters or Dimensions of thisantenna are tabulated in Table.1.

Figure 1: Graphic Representation of Microstrip patch antenna

Thickness of the patch and ground plane (copper and PEC) are0.6mm.Thickness of the substrate (FR4) is 1.6mm. Microstrip LineFeeding method is used to design the patch antenna. This type of

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Figure 2: proposed design for the miniaturized Patch antenna usingreflector

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feeding is very commonly used because it is very easy to design andexamine and very easy to making.

3 RESULTS AND DISCUSSION

Composed Microstrip fix reception apparatus has mimicked overAnsoft HFSS examination. To compute the transmission capacityof a reception apparatus we need to break down the arrivalmisfortune bend which is appeared in Fig.3. Plainly the proposedconfiguration having resounding frequencies at 2.4GHz.

Figure 3: Return loss of the patch dipole antenna using reflector

The one more parameter which was identified with the arrivalmisfortune bend and transfer speed is the VSWR which decideswhether the data transmission in the above said recurrence groupsare helpful or not. As indicated by hypothesis the VSWR ought tobe underneath 2dB for the whole recurrence run in which receptionapparatus needs to work. The recreated VSWR bend is appearedin Fig.4.

The proposed antenna design is achieved the VSWR was lessthan 2 at the operating frequency range of 2.4GHz.

In Fig. 5, radiation pattern is bidirectional pattern withoutusing reflector. After reflector is used the bidirectional radiationpattern is to be changing in to a unidirectional pattern shown inFig. 6. At first bidirectional radiation pattern is obtained. After

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Figure 4: VSWR plot of the patch dipole antenna using reflector

Figure 5: Radiation Pattern of the Patch dipole antenna withoutreflector

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the usage of reflector wideband is changed into narrowband at theoperating frequency.

Figure 6: Radiation Pattern of the Patch dipole antenna withreflector

Figure 7: Gain of the Patch dipole antenna using reflector

High gain as per proposed in dipole antenna at frequency rangeof 2.4GHz is achieved shown in Fig. 7.

4 CONCLUSION

A simple microstrip feed line has been introduced and applied tomicrostrip feed rectangular antenna. Its 10-dB impedance

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bandwidth covers the bands of 2.4GHz for WLAN application.For the proposed antenna design, radiation pattern, VSWR,Return loss and gain has been analyzed by using refector. Thesimulations results are obtained by using Ansoft HFSS.

5 FUTURE WORK

There are always more aspects that can be investigated than whatis already been done. The proposed design will be modified withthe arm’s length and reflector length which have to achieve thebetter efficient characteristics to compare the above one.

References

[1] Zhen-Yu Zhang, Yong-Xin Guo “New wide-band Planar BalunOn a PCB”, University of Engineering & Technology, Pakistan.

[2] R.Gonzalo, “A Dual-Polarized Magneto-Electric Dipole withDielectric Loading”, IEEE Transactions on, vol. 47,pp. 2131-2138, 1999.

[3] R. Waterhouse, “Small Microstrip patch antenna,” ElectronicsLetters, vol. 31, 1995.

[4] J. Anguera, E. Martinez and J. Soler, “Broad Band Dual-Frequency Microstrip Patch Antenna With Modified SierpinskiFractal Geometry”, IEEE Transactions on Antennas andPropagation, vol. 52, no. 1, pp.66-73, Jan. 2004

[5] C. Chien-Wen “Planar Hexa-Band Inverted- F Antennafor Portable Device Applications,” Antennas and WirelessPropagation Letters, IEEE, 2009.

[6] S. Maci and G.B. Gentili, “Dual-frequency patch antennas”,IEEE Antennas and Propagation Magazine, 1997.

[7] Anguera, J, Puente C “Dual frequency broad-band micro strippatch antenna,” Antennas and Wireless Propagation Letters,IEEE, 2003.

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[8] H. M. Al-Rizzo, “Size reduction of patch antenna using slottedComplementary Split-Ring Resonators,” in TechnologicalAdvances in Electrical Electronics and Computer Engineering(TAEECE), International Conference on 2013,

[9] S. Gaikwad “Miniaturized fractal antenna for 2.5GHzapplication,” in Electrical Electronics and Computer Science,IEEE Students’ Conference on, 2012.

[10] Rahmadani “Microstrip patch antenna using artificialmagnetic conductor,” in Telecommunication Systems,Services, and Applications (TSSA), 6th InternationalConference on 2011.

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PERFORMANCE ANALYSIS OF MINIATURIZED …The antenna design and analysis by using transmission line model. The front view of proposed patch antenna for miniaturized size using re ector