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Progress In Electromagnetics Research
ISSN: 1070-4698, E-ISSN: 1559-8985
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LOADED MICROSTRIP DISK RESONATOR EXHIBITS ULTRA-LOW FREQUENCY RESONANCE

By T. Chakravarty, S. M. Roy, S. K. Sanyal, and A. De

Full Article PDF (172 KB)

Abstract:
In this paper a novel method of generation of ultra-low resonance in a microstrip disk resonator is presented. The disk resonator is loaded with series L-C circuit across a selective location in the disk via a thin shorting pin. It is shown that in loaded disk resonator, the lowest resonance observed is in VHF range whereas the unloaded disk had a fundamental resonance at 1.76 GHz. This resonance is slightly offset from the series resonant frequency of L-C circuit. and it depends on the disk radius as well. Using IE3D, a commercial MoM solver, the said structure is simulated. The experimental results agree well with the simulated results. A closed form expression for computing the resonant frequency is given.

Citation: (See works that cites this article)
T. Chakravarty, S. M. Roy, S. K. Sanyal, and A. De, "Loaded microstrip disk resonator exhibits ultra-low frequency resonance," Progress In Electromagnetics Research, Vol. 50, 1-12, 2005.
doi:10.2528/PIER04042601
http://www.jpier.org/pier/pier.php?paper=0404261

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

2. Majumdar, A., T. Chakravarty, S. Saran, and S. K. Sanyal, "A novel technique to implement frequency hopping planar antennas with a computer interface," Microw. and Optical Tech. Letters, Vol. 38, 270-274, 2003.
doi:10.1002/mop.11035

3. Chakravarty, T., S. K. Sanyal, and A. De, "Compact and tunable circular microstrip patch using post-varactor loading," IETE Tech. Review, Vol. 18, 153-157, 2001.

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


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