Views
3 years ago

IJESIT201302_90

IJESIT201302_90

dB(St(Cylinder3_T1,Cylinder3_T1))ISSN: 2319-5967ISO 9001:2008 CertifiedInternational Journal of Engineering Science and Innovative Technology (IJESIT)Volume 2, Issue 2, March 2013From the plot of radiation pattern it is proven that as we get main lobe larger than back lobe ,the front radiation arelarger and low F/B ratio.VII. RECTANGULAR PATCH ANTENNAFirst proposed design for wearable antenna is circular yagi patch antenna. In this design the shape of substrate iscircular. Following fig 3. Shows the design model for circular patch yagi antennaA. Design modelFig6 Rectangular yagi patch antennaB. S11 parameterFig 7 shows the S11 plot for the proposed antenna which indicates that the antenna gives improved result ascompared to previous one. It gives -24dB return loss.Ansoft Name Corporation X Ym1 0.00 2.3153 -15.1612-5.00XY Plot 1Curve InfoHFSSDesign1dB(St(Cylinder3_T1,Cylinder3_T1))Setup1 : Sw eep1-10.00-15.00m1C. Radiation patternAnsoft Corporation-20.001.00 1.50 2.00 2.50 3.00Freq [GHz]Fig.7 S11 plotRadiation Pattern 5HFSSDesign1-90-60-120-3000.060.050.030.02306012090Curve InforETotalSetup1 : Sw eep1Phi='0deg'rETotalSetup1 : Sw eep1Phi='10deg'rETotalSetup1 : Sw eep1Phi='20deg'rETotalSetup1 : Sw eep1Phi='30deg'rETotalSetup1 : Sw eep1Phi='40deg'rETotalSetup1 : Sw eep1Phi='50deg'rETotalSetup1 : Sw eep1-150150Fig 8 Radiation pattern.Fig.8 shows the plot of radiation pattern.In rectangular patch antenna we get side lobe radiation dominating-180578