Title :
Novel Ka-band Substrate Integrated Folded Waveguide (SIFW) Quasi-elliptic filters in LTCC
Author :
Qiu, Pinjie ; Wang, Zhigang ; Yan, Bo
Author_Institution :
Dept. of Electr. Eng., Univ. of Electron. Sci. & Technol. of China, Wuhan
Abstract :
An improved SIFW structure is proposed for the first time in this paper. Base on the new structure, two novel millimeter-wave SIFW BPFs have been analyzed and designed in this paper. Through the cross-coupling, the filters could provide TZs on lower and higher stopband which greatly enhance the side-band rejection. LTCC technology is also implemented to realize further compact size of this filter. Moreover, the length of the filter is nearly half of the unfolded counterpart, which has important significance for system´s miniaturization.
Keywords :
elliptic filters; millimetre wave filters; substrate integrated waveguides; Ka-band substrate integrated folded waveguide; LTCC; cross-coupling; millimeter-wave SIFW BPF; quasi-elliptic filters; side-band rejection; Costs; Electromagnetic waveguides; Insertion loss; Iris; Microwave filters; Microwave technology; Millimeter wave circuits; Millimeter wave technology; Planar waveguides; Resonator filters;
Conference_Titel :
Microwave Conference, 2008. APMC 2008. Asia-Pacific
Conference_Location :
Macau
Print_ISBN :
978-1-4244-2641-6
Electronic_ISBN :
978-1-4244-2642-3
DOI :
10.1109/APMC.2008.4958216
