PERFORMANCE ANALYSIS OF MINIATURIZED PATCH ANTENNA FOR WIRELESS APPLICATIONS USING REFLECTOR

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1 Volume 120 No , ISSN: (on-line version) url: PERFORMANCE ANALYSIS OF MINIATURIZED PATCH ANTENNA FOR WIRELESS APPLICATIONS USING REFLECTOR A.K.Thasleem Sulthana 1, S.Vimala 2, K.Saranya 3, S.Sathiya 4 1,2,3,4 Assistant Professor K.Ramakrishnan College of Engineering, Trichy, India 1 thasleemkrce30@gmail.com July 9, 2018 Abstract In this work, the radiation attributes of the microstrip bolstered rectangular fix receiving wire is dissected for Wireless application. The dielectric substrate of FR4 is utilized and it has a dielectric permittivity of 4.4.The composed reception apparatus has a straightforward structure and minimal size of 38 x 31.8 mm2. By utilizing HFSS, the proposed radio wire has been intended to reverberate at 2.4GHz. Keywords: Reflector, Voltage Standing Wave Ratio (VSWR), Return loss, Gain, Rectangular patch, Microstip feed. 1 INTRODUCTION Wireless communication is among technologys biggest contributions to mankind. The patch dipole antenna may play a

2 very important role in mobile communication because the complete dimension reduction of the antenna. For size reduction of the antenna more number of techniques has been followed. Microstrip antenna is a type of antenna consisting of a dielectric substrate with relative permittivity and permeability where sandwiched between a ground plane and a conducting patch. Graphical representation of Microstrip patch antenna is shown in Fig.1. The first step in designing of micro strip antenna is to choose the suitable substrate material. There are various types of substrate available in market that offers much flexibility in the choice of a substrate for particular application. Therefore, Microstrip patch antennas are essential to provide multi-functional operations for wireless communication. Multiband antenna is operating only at distinct frequencies. The advantages of the Microstrip reception apparatuses are minor size, little profile, and low weight, similar to all surfaces. It stacks a next to no volume of the structure when mounting. They are straightforward and shoddy to fabricate utilizing current printed circuit innovation. In [1] RT Duroid 5880 was used as a substrate. Here power divider and wideband phase shifter was used on the patch to resonate at 1.7 to 3.3GHz.The technique of coaxial feeding reduces the impedance bandwidth of an antenna. In [2] Teflon was used as a substrate. This technique also limits the efficiency and impedance bandwidth of antenna. In [3] costs of substrate was also very high, dielectric constant of the substrate is also very high.this technique produces the impedance bandwidth of about 68%. In [4] magnetic substrates were used for reducing the overall dimension of the antenna. An impurity in this substrate reduces the bandwidth of an antenna. In [5] inverted F antenna provides a large amount of size reduction but very small gain and also impedance bandwidth was also very low. In [6] dual frequency patch antenna designed by cutting U slot on the patch. This is also reducing the size of Microstrip patch antenna. However the gain and impedance bandwidth, radiation efficiency of an antenna decreased by fractal shapes of the patches. In [7] stacked Microstrip patch antenna provided a complicated design and also fabrication was very difficult. In [8] slotted complementary split ring resonators gives only small amount of size reduction. Impedance bandwidth

3 was also very narrow. In [9] fractal shapes provided a difficult design. In [10] epoxy resin substrate was used. It provided the impedance mismatch losses. Also this substrate was not accessible in pure form. In our work miniaturization of patch antenna presented for Wireless application. This antenna consists of rectangle shaped patch and reflector. And then antenna geometry has been optimized to cover the bandwidth for WLAN. The designed antenna 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 also very simple. This is single layer single patch antenna. FR4 substrate is used as a substrate. When comparing with other substrate, 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 size using reflector is shown in Fig 2.Parameters or Dimensions of this antenna are tabulated in Table.1. Figure 1: Graphic Representation of Microstrip patch antenna Thickness of the patch and ground plane (copper and PEC) are 0.6mm.Thickness of the substrate (FR4) is 1.6mm. Microstrip Line Feeding method is used to design the patch antenna. This type of

4 Figure 2: proposed design for the miniaturized Patch antenna using reflector

5 feeding is very commonly used because it is very easy to design and examine and very easy to making. 3 RESULTS AND DISCUSSION Composed Microstrip fix reception apparatus has mimicked over Ansoft HFSS examination. To compute the transmission capacity of a reception apparatus we need to break down the arrival misfortune bend which is appeared in Fig.3. Plainly the proposed configuration 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 arrival misfortune bend and transfer speed is the VSWR which decides whether the data transmission in the above said recurrence groups are helpful or not. As indicated by hypothesis the VSWR ought to be underneath 2dB for the whole recurrence run in which reception apparatus needs to work. The recreated VSWR bend is appeared in Fig.4. The proposed antenna design is achieved the VSWR was less than 2 at the operating frequency range of 2.4GHz. In Fig. 5, radiation pattern is bidirectional pattern without using reflector. After reflector is used the bidirectional radiation pattern is to be changing in to a unidirectional pattern shown in Fig. 6. At first bidirectional radiation pattern is obtained. After

6 Figure 4: VSWR plot of the patch dipole antenna using reflector Figure 5: Radiation Pattern of the Patch dipole antenna without reflector

7 the usage of reflector wideband is changed into narrowband at the operating frequency. Figure 6: reflector Radiation Pattern of the Patch dipole antenna with Figure 7: Gain of the Patch dipole antenna using reflector High gain as per proposed in dipole antenna at frequency range of 2.4GHz is achieved shown in Fig CONCLUSION A simple microstrip feed line has been introduced and applied to microstrip feed rectangular antenna. Its 10-dB impedance

8 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. The simulations results are obtained by using Ansoft HFSS. 5 FUTURE WORK There are always more aspects that can be investigated than what is already been done. The proposed design will be modified with the arm s length and reflector length which have to achieve the better efficient characteristics to compare the above one. References [1] Zhen-Yu Zhang, Yong-Xin Guo New wide-band Planar Balun On a PCB, University of Engineering & Technology, Pakistan. [2] R.Gonzalo, A Dual-Polarized Magneto-Electric Dipole with Dielectric Loading, IEEE Transactions on, vol. 47,pp , [3] R. Waterhouse, Small Microstrip patch antenna, Electronics Letters, vol. 31, [4] J. Anguera, E. Martinez and J. Soler, Broad Band Dual- Frequency Microstrip Patch Antenna With Modified Sierpinski Fractal Geometry, IEEE Transactions on Antennas and Propagation, vol. 52, no. 1, pp.66-73, Jan [5] C. Chien-Wen Planar Hexa-Band Inverted- F Antenna for Portable Device Applications, Antennas and Wireless Propagation Letters, IEEE, [6] S. Maci and G.B. Gentili, Dual-frequency patch antennas, IEEE Antennas and Propagation Magazine, [7] Anguera, J, Puente C Dual frequency broad-band micro strip patch antenna, Antennas and Wireless Propagation Letters, IEEE,

9 [8] H. M. Al-Rizzo, Size reduction of patch antenna using slotted Complementary Split-Ring Resonators, in Technological Advances in Electrical Electronics and Computer Engineering (TAEECE), International Conference on 2013, [9] S. Gaikwad Miniaturized fractal antenna for 2.5GHz application, in Electrical Electronics and Computer Science, IEEE Students Conference on, [10] Rahmadani Microstrip patch antenna using artificial magnetic conductor, in Telecommunication Systems, Services, and Applications (TSSA), 6th International Conference on

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