%0 Journal Article %T Sharp Response Microstrip LPF using Folded Stepped Impedance Open Stubs %A S. V. Makki %A A. Ahmadi %A S. Majidifar %A H. Sariri %J Radioengineering %D 2013 %I Spolecnost pro radioelektronicke inzenyrstvi %X A novel microstrip lowpass filter with high selectivity and wide stopband is proposed that comprises two lateral folded open stubs and a central mirrored semi-circle ended suppressing cell. The proposed filter has cut-off frequency of 2.28 GHz and is very compact. The stopband width with attenuation level more than -20 dB is equal to 5.47 fc and the transition band is only 0.14 GHz. This filter is designed, fabricated and measured and the simulated and measured results are in good agreement %K Low pass filter %K microstrip technology %K folded open stub %K sharp response %K wide stopband %U www.radioeng.cz/fulltexts/2013/13_01_0328_0332.pdf