DESIGN OF CORPORATE FEED RECTANGULAR MICROSTRIP PATCH ANTENNA AUTHORS P SUBBULAKSHMI R RAJKUMAR

DESIGN OF CORPORATE FEED RECTANGULAR MICROSTRIP PATCH ANTENNA AUTHORS P SUBBULAKSHMI R RAJKUMAR 1 1 OBJECTIVES To design microstrip patch antenna array configuration with high gain, large band. DESIGN OF CORPORATE FEED RECTANGULAR MICROSTRIP PATCH ANTENNA AUTHORS P SUBBULAKSHMI R RAJKUMAR 1 1 OBJECTIVES To design microstrip patch antenna array configuration with high gain, large band.

DESIGN OF CORPORATE FEED RECTANGULAR MICROSTRIP PATCH ANTENNA

AUTHORS

P.SUBBULAKSHMI R.RAJKUMAR

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 To design microstrip patch antenna array configuration with high gain, large bandwidth and smaller size for Wi-MAX applications.

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 Antenna is a electrical device which converts electrical power into radio waves

 This paper proposes the design of 4-element microstrip patch antenna.

 It uses corporate feed technique for excitation

 Taconic is the dielectric substrate (εr=2.2)

 The design is simulated using FEKO software

 Frequency range – 1 to 6 GHz

 Attractive for airborne and spacecraft applications

 Size reduction using high dielectric materials

 Narrow bandwidth should be enhanced

 Different feeding techniques

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MICROSTRIP PATCH ANTENNA

 Consists of thin metallic strip called patch

 Thickness of patch ( t << λ0 )

 Low profile

 Simple and inexpensive

 Patch radiates first because of fringing fields

 Mechanically robust to mount

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MICROSTRIP PATCH ANTENNA

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PROXIMITY COUPLING

FEEDING TECHNIQUES

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FEEDING TECHNIQUES

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Existing Technique



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MICROSTRIP CORPORATE FEED

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 Provide power split of 2n (n=2,4,8,16…).

 It also uses quarter wavelength transformer method.

 Phase can be controlled using phase shifter.

 Amplitude can be adjusted using either attenuator or amplifier.

Microstrip Patch Design

 Easy to fabricate

 Simple to match the impedance by controlling the inset position

 Conducting strip is directly connected to the edge of the patch

 If thickness increases, surface waves and spurious feed radiation increases

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Co-axial / probe

 Inner conductor  extends through dielectric

 Outer conductor connected to ground plane

 Feed can be placed anywhere in the patch

 Low spurious radiation

 Broad bandwidth applications, even for a thick dielectric substrate

 Used in Wi -MAX applications

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MICROSTRIP CORPORATE FEED

 Provide power split of 2n(n=2,4,8,16….)

 It also uses quarter wavelength transformer method

 Phase can be controlled using phase shifter

 Amplitude can be adjusted using either attenuator or amplifier

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DESIGN CONSIDERATION

 Frequency of operation(f0): 9-11 GHz

 Dielectric constant ( εr): 2.2

 Dielectric substrate: TACONIC

 Height of dielectric substrate(h): 2.87mm

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SOFTWARE USED

 By using FEKO SUITE, we have designed the Microstrip Patch Antenna

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Microstrip patch parameters from

FEKO software

MICROSTRIP PATCH PARAMETERS

PATCH PARAMETERS OBTAINED VALUES

APPLICATIONS

 Used in air borne and spacecraft applications

 Highly suitable for x-band applications

 In satellite and military systems

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CONCLUSION

 Simple, Small size and high efficiency antenna can be designed

 Return loss, gain and efficiency are acceptable

 Bandwidth enhancement of 20dB is possible

 Our future work will be carried out using different feeding techniques with different software………

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THANK YOU

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QUERIES ????

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