Design of an UWB bandpass filter using dual MMR with highly attenuated upper stopband using DGS
Автор: Aditi Sengupta, Somdotta Roy Choudhury, Santanu Das
Журнал: International Journal of Wireless and Microwave Technologies @ijwmt
Статья в выпуске: 3 Vol.8, 2018 года.
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A miniature sized microstrip UWB (ultra wideband) BPF (bandpass filter) having highly attenuated upper stop band performance using a dual MMR (multimode resonator) and the DGS (defected ground structure) is proposed. Combining these two topologies, a prototype of the proposed UWB BPF is fabricated using FR-4 substrate of 1.6 mm thickness with dielectric constant of 4.4. This BPF is modelled and simulated using Ansoft high frequency structure simulator (HFSS) Software. The simulated and measured results show a wide FBW (fractional bandwidth) of 119% .The insertion loss is less than -1.0 dB throughout the pass band of 2.78 to 10.95 GHz. All the ripples of return loss are lower than -14 dB in the passband. The BPF has a high rejection of more than -30 dB in the upper stop band up to 16.8 GHz. The simulated and measured group delays variation in the passband are found to be less than 0.2 ns. The overall length of the resonator is 7 mm.
UWB (ultra-wideband), BPF (band pass filter), MMR (multimode resonator), DGS (Defected ground structure), Stopband
Короткий адрес: https://sciup.org/15016932
IDR: 15016932 | DOI: 10.5815/ijwmt.2018.03.06
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