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2010-11-07
Design of Compact Microstrip Low-Pass Filter with Ultra-Wide Stopband Using SIRs
By
Progress In Electromagnetics Research Letters, Vol. 18, 179-186, 2010
Abstract
A novel low-pass filter (LPF) is designed and fabricated based on stepped-impedance resonator (SIR). Semi-circles are used to reduce the size of the filter. The open-circuited stubs are used in the filter, and its simplified equivalent circuit is also proposed. The measured 3 dB cutoff frequency is 5.2 GHz with no more than 0.3 dB ripple level in the pass-band. From 5.5 to 14 GHz, the investigated LPF has a rejection level batter than 20 dB. Measured results show good agreement with simulated ones.
Citation
Lei Wang, Hong-Chun Yang, and Yang Li, "Design of Compact Microstrip Low-Pass Filter with Ultra-Wide Stopband Using SIRs ," Progress In Electromagnetics Research Letters, Vol. 18, 179-186, 2010.
doi:10.2528/PIERL10091201
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