DOI: https://doi.org/10.3103/S0735272710080054
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Periodic structures on coupled slot resonators in the grounding layer of microstrip transmission line

Yu. V. Rassokhina, Vladimir G. Krizhanovski

Abstract


The spectrum of natural frequencies of the resonator has been calculated. The specified resonator includes a microstrip transmission line with discontinuity in the form of two rectangular coupled slot resonators in the grounding layer. Based on the above spectrum and using the transverse resonance method the scattering matrix of the principal wave of the microstip transmission line on this discontinuity was calculated. The scattering characteristic of the periodic structure consisting of a finite number of cells in the form of coupled slot resonators in the grounding layer of microstrip line indicates that with due regard for their mutual coupling the losses in the first stopband can be reduced by 3–5 dB as compared with the characteristic obtained by tandem connection of the scattering matrices of separate slot resonators in the grounding layer of microstrip line.


Keywords


slotline; microstrip line; slotline resonator; mutual coupling

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References


D. Ahn, J. Park, C. Kim, et al., “A design of the low–pass filter using the novel microstrip defected ground structure,” IEEE Trans. Microwave Theory Tech. 49, No. 1, 86 (2001).

V. G. Krizhanovski and Yu. V. Rassokhina, “Scattering at a four-port vertical microstrip-slotline transition,” Izv. Vyssh. Uchebn. Zaved., Radioelektron. 51(5), 54 (2008) [Radioelectron. Commun. Syst. 51(5), 271 (2008)].

V. G. Krizhanovski and Yu. V. Rassokhina, “Periodic structures on the slot resonators in microstrip transmission line,” in Proc. of Int. Krymskaya Conf. “SVCh-tekhnika i telekommunikatsionnye tekhnologii,” September 10–14, 2007, Sevastopol, Ukraine (Veber, Sevastopol, 2007).

Yu. V. Rassokhina and V. G. Krizhanovski, “Periodic structure on the slot resonators in microstrip transmission line,” IEEE Trans. Microwave Theory Tech. 57, No. 7, 1694 (2009).

R. Sorrentino and T. Itoh, “Transverse resonance analysis of finline discontinuities,” IEEE Trans. Microwave Theory Tech. 32, No. 12, 1633 (1984).







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