Title :
Miniaturized ultra-broadband SIR filter using LTCC technology
Author :
Zuo, Li Hua ; Qian, Ke Wei ; Tang, Wei
Author_Institution :
Res. Inst. of Electron. Sci. & Technol., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A novel broadband quarter-wavelength SIR BPF using LTCC technology is proposed. In this filter, three different coupling schemes are adopted. Edge-coupled structure is used to realize week coupling coefficient while great coefficient is obtained by applying direct magnetic coupling between two resonators or overlapping resonators in different LTCC layers. Based on the proposed strong coupling topology, the filter bandwidth is extended while the size is compacted. Besides, spur lines are adopted to improve the stopband rejection.
Keywords :
band-pass filters; ceramic packaging; resonators; ultra wideband technology; LTCC layer; LTCC technology; broadband quarter-wavelength SIR BPF; coupling scheme; coupling topology; direct magnetic coupling; edge-coupled structure; filter bandwidth; miniaturized ultra-broadband SIR filter; overlapping resonator; stopband rejection; week coupling coefficient; Band pass filters; Couplings; Magnetic separation; Microstrip filters; Microwave filters; Resonant frequency; Resonator filters; SIR filte; coupling scheme; low temperature co-fired ceramic (LTCC);
Conference_Titel :
Applied Superconductivity and Electromagnetic Devices (ASEMD), 2011 International Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4244-7852-1
DOI :
10.1109/ASEMD.2011.6145060
