Title :
A compact band-pass filter using transformed radial stubs with ultra-wide stopband
Author :
Zhen Xu ; Qianyun Pang ; Kaixue Ma ; Jun Xu ; Shouxian Mou
Author_Institution :
Sch. of Phys. Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A compact microstrip band-pass filter (BPF) with ultra-wide-band rejection and compact size by using transformed radial stubs (TRS) is presented. Three TRS cells and two shunt stubs are used in the design. The implemented 2.5 GHz BPF with a bandwidth of 19% using three TRS cells demonstrates more than 22-dB rejection from 3 to 23 GHz (up to 9.2f0). The measured passband insertion loss is 2.15dB and the board size of the BPF is only 0.251 × 0.211λg, without using any lumped elements.
Keywords :
UHF filters; band-pass filters; microstrip filters; compact band-pass filter; compact microstrip band-pass filter; frequency 2.5 GHz; transformed radial stubs; ultrawide band rejection; ultrawide stopband; Band-pass filters; Filtering theory; Harmonic analysis; Microstrip filters; Microwave filters; Power harmonic filters; Resonator filters; Band-pass filter BPF; microstrip; transformed radial stubs TRS; wide stopband;
Conference_Titel :
Communication Problem-Solving (ICCP), 2014 IEEE International Conference on
Print_ISBN :
978-1-4799-4246-6
DOI :
10.1109/ICCPS.2014.7062320
