Title :
Compact microstrip ultra-wideband bandpass filter using short-circuited coupled-line hairpin resonator
Author :
Tapar, Shivam ; Velidi, Vamsi Krishna ; Sanyal, Subrata
Author_Institution :
Dept. of Electron. & Electr. Commnication Eng., Indian Inst. of Technol., Kharagpur, India
Abstract :
This paper presents a compact topology of a very wideband bandpass filter intended for the use in ultra-wideband applications. Basic filter configuration consists of quarter-wave coupled-line units forming hairpin structure with short-circuited ends. To improve the out-of-band rejection, a compact couple-line hairpin bandstop filter is added. Design equations are derived using lossless transmission line model. A compact filter unit operating at 1.0 GHz is designed and implemented in microstrip. Theoretical results are validated using full-wave electromagnetic simulation. The results show an insertion loss below 0.74 dB, return loss better than 15.8 dB, and the up to sixth harmonic rejection better than 20 dB.
Keywords :
band-pass filters; computational electromagnetics; microstrip filters; network topology; resonator filters; simulation; compact microstrip ultra-wideband bandpass filter; compact topology; full-wave electromagnetic simulation; harmonic rejection; out-of-band rejection; short-circuited coupled-line hairpin resonator; Band pass filters; Broadband communication; Microstrip filters; Microwave filters; Resonator filters; Ultra wideband technology; Wideband; Bandstop filter; Lowpass filter; Microsrtip filters; coupled line filters transmission line filters;
Conference_Titel :
Applied Electromagnetics Conference (AEMC), 2011 IEEE
Conference_Location :
Kolkata
Print_ISBN :
978-1-4577-1098-8
DOI :
10.1109/AEMC.2011.6256825
