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Design of GSM BPF using Dissimilar LTCC Technology  

고정호 (연세대학교 전기전자공학과)
이상노 (연세대학교 전기전자공학과)
육종관 (연세대학교 전기전자공학과)
박한규 (연세대학교 전기전자공학과)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.14, no.9, 2003 , pp. 931-935 More about this Journal
Abstract
A multilayer two-stage LC bandpass filter using low-temperature cofired-ceramic(LTCC) is proposed in this paper. The proposed bandpass filter is composed of two ceramic substrates with different dielectric constant instead of single ceramic material from top to bottom layer. Inductive elements are designed in a low permitivity ceramic layer to reduce parasitic effects and loss, while capacitive elements are designed in a high permitivity ceramic layer for size reduction. The proposed filter has 950 MHz center &equency, 118 MHz tractional bandwidth, and 3.5 dB insertion loss. And, the total size of this filter is 2.5${\times}$2.5${\times}$l.4mm$^3$. The performance of filter is analyzed by changing coupling capacitance between each resonator.
Keywords
LTCC; Bandpass Filter; MCM; Attenuation Pole;
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