Title :
Design of a dual-band bandpass filter with low-temperature co-fired ceramic technology
Author :
Tang, Ching-Wen ; You, Sheng-Fu ; Liu, I-Chung
Author_Institution :
Dept. of Commun. Eng., Nat. Chung Cheng Univ., Chiayi
Abstract :
A novel dual-band bandpass filter with low-temperature co-fired ceramic technology is proposed in this paper. By adopting the structure of an asymmetrical short-circuit coupled line, two open-stub lines, and two reactances, the transmission zeros, which increase the degree of isolation between the passbands, will easily appear at the higher side of two passband´s skirts. The analysis of theorem and the procedure of design are described. The measurements of fabricated units match well with the electromagnetic simulation results, which is an evidence of the feasibility of the proposed filter configuration
Keywords :
band-pass filters; poles and zeros; coupled line; dual-band bandpass filter; low-temperature co-fired ceramic technology; open-stub line; transmission zeros; Band pass filters; Ceramics; Couplings; Dual band; Electromagnetic measurements; Filtering theory; Isolation technology; Matched filters; Measurement units; Passband; Coupled line; dual-band bandpass filter; low-temperature co-fired ceramic (LTCC); open-stub line;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2006.879174
