Compact UWB bandpass filter with triple notched bands using parallel U-shaped defected microstrip structure

ELECTRONICS LETTERS

INST ENGINEERING TECHNOLOGY-IET

1. National Natural Science Foundation of China [61101047, 61271025]
2. Specialised Research Fund for the Doctoral Program by the Ministry of Education of China [20113219120015]
3. Zijin Foundation of NUST [AB41372]