Abstract
An Archimedean spiral-shaped frequency-selective defected structure is proposed in this paper. This type of structure provides high Q band reject performance with a very small dimension of 0.02λ0 × 0.02λ0. The structure is simulated and mathematically analyzed, and equivalent circuit representation is also made. It is observed that the investigated DGS unit provides a stopband centered at 5.1 GHz. The sharpness factor is very high almost greater than 697 and 398 dB/GHz for the lower and upper side of the stopband. The 20 dB rejection bandwidth is 0.27%. The loaded Q factor for the above dimensions is 46.5. The proposed structure is measured and compared with the simulated data.
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Choudhury, S.R., Sengupta, A., Parui, S.K., Das, S. (2019). An Archimedean Spiral-Shaped Frequency-Selective Defected Structure for Narrowband High Q Applications. In: Mandal, J., Bhattacharyya, D., Auluck, N. (eds) Advanced Computing and Communication Technologies. Advances in Intelligent Systems and Computing, vol 702. Springer, Singapore. https://doi.org/10.1007/978-981-13-0680-8_19
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DOI: https://doi.org/10.1007/978-981-13-0680-8_19
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