Dr. Satish K. Bhatnagar Profile

Dr. Satish K. Bhatnagar

at SKIT

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Proceedings Article | 28 January 2013 Paper

A novel approach for the fine tuning of resonance frequency of patch antenna

Monika Mathur, Ghanshyam Singh, S. Bhatnagar

Proceedings Volume 8760, 87601T (2013) https://doi.org/10.1117/12.2012335

KEYWORDS: Dielectrics, Antennas, Composites, Actinium, Tolerancing, Mathematical modeling, Electronics, Ceramics, Telecommunications, Structural design

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When a patch antenna is fabricated, dimensions of the patch may be slightly different from the designed values due to tolerances in the fabrication process. This alters the resonance frequency of the antenna. To overcome this problem this paper presents a new design approach for fine tuning the resonance frequency by dielectric constant engineering. This approach is especially suited to low temperature co-fired ceramic (LTCC) and similar processes where the antenna dielectric is composed of several layers. Composite dielectric constant of this multilayer structure is altered in such a way that the resonant frequency is set back to the designed value. It has been verified that for proposed micro strip antenna (MSA) design, the frequency-area curve follows a quadratic relation with a variable R (Ratio of cavity area to the patch area). This mathematical model is true up to R 1.27. After this saturation effects set in and the curve follows a straight line behavior.≡

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