A COMPARATIVE ANALYSIS OF WIDE

BAND ANTENNA WITH REDUCED

RADAR CROSS SECTION

Presented By,Ms. T. Srisuji & Mr. C. Nandagopal,M. Kumarasamy College of Engineering,Karur.

• Objective

• Introduction

• Printed Circular Disc Monopole Antenna

• A Novel Ultra Wide Band Antenna with RRCS

• A Novel Low RCS Mobius- Band Monopole Antenna

• Planar Octagonal shaped UWB antenna with RRCS

• Comparative Analysis

• Conclusion

• References

Presentation Outline

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• To compare the different Ultra Wide Band

antenna with Reduced Radar Cross Section

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Objective

UWB • Wide bandwidth• Low Profile• Easy Fabrication• Low complexity, Low

Cost

RCS• Measure of detecting

the objects• Larger RCS- Passenger

airliner• RRCS- Stealth aircraft,

Ballistic Missiles

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Introduction

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Printed Circular Disc Monopole Antenna

• 2.69 to 10.16GHz

• A circular disc monopole radius r, 50Ω

microstrip feed line are printed on the same

side of the dielectric substrate

• FR4 substrate of thickness 1.5mm

εr=4.7 was used

r=10mm,h=0.3mm,L=50mm,W=42mm,

L1= 20mm, W1=2.6mm

• Simple structures

• Ease of fabrication

• Performance- dependent on the width of the

ground plane

Geometry of a Printed Circular Disc Monopole

Antenna

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Novel UWB with RRCS

• 2 Circular ring patches, ground plane,

microstrip line

• Dielectric substrate t= 1.6mm, εr = 2.65,

Loss tangent= 0.02, 50Ω microstrip feed

line

• Metallic holes – 0.3mm

• 1.99- 10.8GHz

• RCS reduction- High frequencies

• No RRCS- Low frequenciesGeometry of a UWB

Antenna

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A Novel Low RCS Mobius- Band Monopole

• Mobius- rectangle- one end fixed-

rotating opposite end

• 2.8GHz- 11.0GHz

• Two circular ring patches of width 2mm.

• Printed on FR-4 substrate with dielectric

constant= 4.4 and thickness= 0.8mm and

fed by 50Ω microstrip lines.

• Metallic via holes

– Upper , lower annuluses- 10 via

holes- r=0.1mm

– Adjacent via holes 0.2mm

• RCS reduced - 7dB

Geometry of Mobius- Band Monopole Antenna

POS- UWB with RRCS

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• 2.5- 18 GHZ

• Subtracting metallic areas- small surface

currents

• R=4mm, F=6mm

• Ex=35mm, Ey=29mm

• RCS reduced 10dB- whole BW

• Low frequency- RRCS- 25dB Geometry of Octagonal Shaped Antenna

COMPARATIVE ANALYSIS

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S. No AntennaFrequency

Range Inference

1Printed Circular Disc Monopole Antenna (PCDMA)

2.69- 10.16 GHz

• Wide operating BW • Simple structures• Ease of fabrication• Performance- depend on width of the ground plane, Gain is reduced at 9GHz

2A Novel Ultra Wide Band Antenna with RRCS

1.99- 10.8GHz• RCS reduced at high frequencies, not at low frequencies

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S. No AntennaFrequency

Range Inference

3A Novel Low RCS Mobius- Band Monopole Antenna

2.8- 11.0 GHz• Good radiation Performance• RCS is reduced about 7dB

4

Planar Octagonal Shaped UWB Antenna with RRCS

2.5- 18GHz

• Removing area of smaller current distribution. • RCS reduced 10dB, Low Freq- 25dB

Contd.,

• Different types of UWB- compared• Octagonal shaped UWB antenna with RRCS-

Good antenna performance

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Conclusion

[1] Liang, J., C. Chiau, X. Chen, and C. Parini, Study of a printed circular disc monopole antenna for UWB systems," IEEE Trans. Antennas Propag., Vol. 53, No. 11, 35003504, 2005.

[2] W. Jinag, S. X. Gong, Y. P. Li, T. Hong, X. Wang, and L. T. Jiang, “A novel low RCS Mobius band monopole antenna,” J. Electromagn.Waves Appl., vol. 23, no. 14–15, pp. 1887–1895, 2009

[3] T. Hong, S. -X. Gong, W. Jiang, Y.-X. Xu, and X. Wang, “A novel ultra-wideband antenna with reduced radar cross section,” Progr. Electromagn. Res., vol. PIER 96, pp. 300–308, 2009.

[4] Cengizhan M. Dikmen, Sibel CIMEN, Gonca CAKIR. “An Octagonal Shaped Ultra Wide Band Antenna With Reduced RCS”, International Japan-Egypt Conference on Electronics, Communications and Computers. 2013

[5] Cengizhan M. Dikmen, Gonca CAKIR,” Double side Axe shaped UWB antenna with Reduced RCS”, Asia pacific Microwave Conference Proceedings, 2013

[6] Cengizhan M. Dikmen, Sibel Cimen and Gonca Cakir, “ Planar Octagonal- shaped UWB antenna with Reduced Radar Cross Section”, IEEE Transactions on Antenna and Propagation, Vol. 62, No. 6, June 2014.

[7] Y. Li, H. Zhang, Y. Fu, and N. Yuan, “RCS reduction of ridged waveguide slot antenna array using EBG radar absorbing material,” IEEE Antennas Wireless Propag. Lett., vol. 7, pp. 473–476, 2008

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References

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