Title :
Design of a compact bandpass filter with multi-coupled stepped impedance resonators using LTCC technology
Author :
Jiang, Wei ; Qin, Yali
Author_Institution :
Inst. of Fiber-Opt. Commun. & Inf. Eng., Zhejiang Univ. of Technol., Hangzhou, China
Abstract :
A multilayer LTCC bandpass filter is proposed in this paper. The proposed filter consists of two pairs of improved stepped impedance resonators (SIR´s). The improved SIR´s have realized multi-coupling which makes the filter more compact. In addition, due to the multi-coupled SIR´s, two transmission zeros are introduced to improve out-band characteristic of the filter. This filter has a central frequency of 6GHz with a bandwidth of 1GHz, the insertion loss is less than 1.5dB and the overall size is 2mm*2.2mm*0.9mm.
Keywords :
band-pass filters; crystal filters; poles and zeros; resonators; LTCC technology; bandwidth 1 GHz; compact bandpass filter; frequency 6 GHz; insertion loss; multicoupled stepped impedance resonators; multilayer LTCC bandpass filter; out-band characteristic; transmission zeros; Band pass filters; Capacitors; Couplings; Filtering theory; Microwave filters; Optical filters; Resonator filters; LTCC; bandpass filter; improved SIR; transmission zero;
Conference_Titel :
Signal Processing, Communications and Computing (ICSPCC), 2011 IEEE International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4577-0893-0
DOI :
10.1109/ICSPCC.2011.6061677
