Název:	A design of a dual-band bandpass filter based on modal analysis for modern communication systems
Autoři:	Lalbakhsh, Ali Alizadeh, Seyed Morteza Ghaderi, Amirhossein H. Golestanifar, Alireza R. Mohamadzade, Bahare Jamshidi, Mohammad Mandal, Kaushik Mohyuddin, Wahab
Citace zdrojového dokumentu:	LALBAKHSH, A., ALIZADEH, S. M., GHADERI, A. H., GOLESTANIFAR, A. R., MOHAMADZADE, B., JAMSHIDI, M., MANDAL, K., MOHYUDDIN, W. A design of a dual-band bandpass filter based on modal analysis for modern communication systems. Electronics, 2020, roč. 9, č. 11, s. 1-13. ISSN 2079-9292.
Datum vydání:	2020
Nakladatel:	MDPI
Typ dokumentu:	článek article
URI:	2-s2.0-85094556900 http://hdl.handle.net/11025/42481
ISSN:	2079-9292
Klíčová slova v dalším jazyce:	dual-band BPF;tunable bandwidth;LC circuit;microstrip technology
Abstrakt v dalším jazyce:	A dual-band bandpass filter (BPF) composed of a coupling structure and a bent T-shaped resonator loaded by small L-shaped stubs is presented in this paper. The first band of the proposed BPF covers 4.6 to 10.6 GHz, showing 78.9% fractional bandwidth (FBW) at 7.6 GHz, and the second passband is cantered at 11.5 GHz with a FBW of 2.34%. The bent T-shaped resonator generates two transmission zeros (TZs) near the wide passband edges, which are used to tune the bandwidth of the first band, and the L-shaped stubs are used to create and control the narrow passband. The selectivity performance of the BPF is analyzed using the transfer function extracted from the lumped circuit model verified by a detailed even/odd mode analysis. The BPF presents a flat group delay (GD) of 0.45 ns and an insertion loss (IL) less than 0.6 dB in the wide passband and a 0.92 IL in the narrow passband. A prototype of the proposed BPF is fabricated and tested, showing very good agreement between the numerically predicted and measured results.
Práva:	© MDPI
Vyskytuje se v kolekcích:	Články / Articles (KEV) Články / Articles (RICE) OBD

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