P R E S E N T E D B Y: -

A M I T K I R T I S A R A N R A M I T K I R T I S A R A N B - T E C H ( E C E ) 3 R D Y E A R

DESIGN MICROSTRIP PATCH ANTENNA AT 2.45GHz

OUTLINE

INTRODUCTIONMICROSTRIP PATCH ANTENNADESIGN EQUATIONSDESIGN PATCH ANTENNARESULTSAPPLICATIONSREFERENCES

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INTRODUCTION

What is an Antenna ? Principle of Antenna How EM Waves generate Basic Antenna Parameters

Gain Directivity Radiation Pattern Efficiency

Tool: HFSS

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MICROSTRIP PATCH ANTENNA

Microstrip patch antenna consists of a conducting patch and ground plane between them is a dielectric medium called the substrate

The dimensions of a patch are smaller as compared to the substrate and ground

Microstrip patch antenna depend on the resonant frequency and value of the dielectric constant

Microstrip patch antennas radiate primarily because of the fringing fields between the Patch edge and the ground plane

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DESIGN EQUATIONS

Step 1: Calculation of the Width (W): The width of the Microstrip patch antenna is given as:

Substituting c = 3.00e+008 m/s, εr = 2.45 and fo = 2.4 GHz W = 0.0475 m = 47.5 mm.

Step 2: Calculation of Effective dielectric constant (εreff): The effective dielectric constant is: Substituting εr = 2.45, W = 47.5 mm and h

= 1.58 mm εreff = 2.3368

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Step 3: Calculation of the Effective length ( Leff): The effective length is:

Substituting εreff = 2.3368, c = 3.00e+008 m/s and fo =2.45 GHz Leff = 0.0406 m = 40.625 mm

Step 4: Calculation of the length extension (L): The length extension is: d Substituting εreff = 2.3668, W = 47.5 mm and h =

1.58 mm L = 0.81 mm

DESIGN EQUATIONS

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7Step 5: Calculation of actual length of patch (L):

The actual length is obtained by:L = Leff - 2LSubstituting Leff = 40.625 mm and .L = 0.81 mmL = 39 m = 39 mm

DESIGN EQUATIONS

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EM PLANAR WINDOW OF HFSS

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ASSIGNING CALCULATED VALUES

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INSET FEED MICROSTRIP PATCH

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RADIATIONS

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RESULTS

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RESULTS

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APPLICATIONS

Mobile and satellite communication Global Positioning System Bluetooth RadarMedicinal applications of patch

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MOVING TARGET INDICATING APPLICATIONS

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REFERENCES

BOOKS:- C.A. Balanis “Antenna Theory” Wiley ,2ED Wiley

publications J.D.KRAUSS “Antenna and Wave Propagation”, 2ED THM

publications C. Kamtongdee, “A Novel Design Of Compact 2.4GHz

Microstrip Antennas,” Department of Electrical Engineering, Khon Kaen University, Thailand, pp.766- 769, 2009.

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QUIRES

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THANK YOU