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PIER PIER B PIER C PIER M PIER Letters
2005-02-17
A Novel Microstrip Patch Antenna with Large Impedance Bandwidth in VHF/UHF Rang
By
Tapas Chakravarty,

    Dr. Tapas Chakravarty

    TCS Research

    India

    Homepage

Sushim Roy,

    Dr. Sushim Roy

    Department of Electronics & Telecommunication Engineering

    Bengal Engineering college

    India

    Homepage

Salil Sanyal,

    Dr. Salil Sanyal

    Department of Electronics & Telecom Engineering

    Jadavpur University

    India

    Homepage

Asok De

    Professor Asok De

    Department of Electronics & Communication Engineering

    Ambedkar Institute for Advanced Communication Technology & Research

    India

    Homepage

, Vol. 54, 83-93, 2005
doi:10.2528/PIER04102101
Abstract
In this paper a novel antenna is presented. This antenna, employing microstrip circular disc as radiator is seen to perform over a large impedance bandwidth (130 MHz to 876 MHz). The disk resonator is loaded with L-C-R circuit across a selective location in the disk via a thin shorting pin. The theoretical modeling predicts TM01 mode of operation. Therefore the beam pattern shows a null in the broadside direction. The said antenna is proposed to be developed for end use in coal mine where the antenna can be flush mounted on coal strata. Thus it will be able to measure the angle of arrival of any reflective component due to presence of waterbed at a distance. The measured as well as simulated results regarding impedance bandwidth and beam pattern agrees well. The simulated efficiency using IE3D is 48% whereas measured efficiency is nearly 45%.
Citation
Tapas Chakravarty, Sushim Roy, Salil Sanyal, and Asok De, "A Novel Microstrip Patch Antenna with Large Impedance Bandwidth in VHF/UHF Rang," , Vol. 54, 83-93, 2005.
doi:10.2528/PIER04102101
References

1. Garg, R., P. Bhartia, I. Bahl, and A. Ittipiboon, Microstrip Antenna Design Handbook, Artech House, 2000.

2. Suh, S.-Y., W. L. Stutzman, and W. A. Davis, "A new ultrawideband printed monopole antenna: The planar inverted cone antenna (PICA)," IEEE Trans. Antennas Propag., Vol. 52, No. 5, 2004.
doi:10.1109/TAP.2004.827529

3. Chakravarty, T., S. M. Roy, S. K. Sanyal, and A. De, "Loaded microstrip disk resonator exhibits ultra-low frequency resonance," Progress in Electromagnetics Research, 1-12, 2005.
doi:10.2528/PIER04042601

4. Bahl, I. J. and P. Bhartia, Microstrip Antennas, Artech House, 1980.

5. Chakravarty, T. and A. De, "Resonant frequency of a shorted circular patch with the use of a modified impedance expression for a metallic post," Microwave and Optical Technology Letters, Vol. 33, No. 4, 252-256, 2002.
doi:10.1002/mop.10290

6. Chakravarty, T. and A. De, "Design of tunable modes and dual- band circular patch antenna using shorting posts," IEE Proc. — Microw. Antennas Propag., Vol. 146, No. 3, 224-228, 1999.
doi:10.1049/ip-map:19990629

7. Guo, Y. J., A. Paez, R. A. Sadeghzadeh, and S. K. Barton, "A circular patch antenna for radio LANs," IEEE Trans. Antennas Propag., Vol. AP-45, 177-178, 1997.
doi:10.1109/8.554256

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