Title :
An UWB bandpass filter with large notch suppression
Author :
Dong, Ruibing ; Pokharel, Ramesh K. ; Kanaya, Haruichi ; Yoshida, Keiji
Author_Institution :
Grad. Sch. of ISEE, Kyushu Univ., Fukuoka, Japan
Abstract :
We present an ultra-wideband bandpass filter with -15dB suppression between 5.15-5.8GHz utilizing second order band elimination filter (BEF). The filter consists of a modified step impedance resonator (SIR) and two interdigital coupled line. Two parallel coupled stubs are attached to the SIR to create a second order BEF, which introduce a sharp and wide enough notch. HFSS was used to optimal the structure, and the measured result shown a good agreement with the simulated one. The 3dB bandwidth of the UWB Bandpass filter are between 3.1-4.8GHz and 6.1-10.2GHz.
Keywords :
band-pass filters; band-stop filters; coupled transmission lines; resonators; ultra wideband technology; HFSS; UWB bandpass filter; frequency 3.1 GHz to 4.8 GHz; frequency 5.15 GHz to 5.8 GHz; frequency 6.1 GHz to 10.2 GHz; interdigital coupled line; large notch suppression; parallel coupled stubs; second order band elimination filter; step impedance resonator; ultra-wideband bandpass filter; Band pass filters; Bandwidth; Couplings; Etching; Filtering theory; Frequency; Impedance; Resonance; Resonator filters; Ultra wideband technology; bandpass filter (BPF); notch; parallel coupled stub; ultra-wideband (UWB);
Conference_Titel :
Microwave Conference, 2009. APMC 2009. Asia Pacific
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-2801-4
Electronic_ISBN :
978-1-4244-2802-1
DOI :
10.1109/APMC.2009.5384499
