DocumentCode :
853989
Title :
A novel modified-T equivalent circuit for modeling LTCC embedded inductors with a large bandwidth
Author :
Horng, Tzyy-Sheng ; Wu, Jian-Ming ; Yang, Li-Qun ; Fang, Shyh-Tirng
Author_Institution :
Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Taiwan, Taiwan
Volume :
51
Issue :
12
fYear :
2003
Firstpage :
2327
Lastpage :
2333
Abstract :
This paper presents a new modified-T model for three-dimensional inductors embedded in the multilayer low-temperature cofired-ceramic substrate with a remarkably large bandwidth. This model combines a core circuit, a five-element modified-T model, to include the effects of a transmission line with an electrical length up to π, and several resonators to consider the effects due to coil coupling and the finite ground plane. It is emphasized that most of the elements in this equivalent-circuit model can be extracted directly from the measured S-parameters. Compared to the conventional PI-section model that is valid only up to the fundamental self resonant frequency (SRF), this model can include more higher-order SRFs and ground resonant frequencies effectively, which results in several times larger bandwidth.
Keywords :
S-parameters; ceramic packaging; equivalent circuits; hybrid integrated circuits; inductors; multilayers; radiofrequency integrated circuits; LTCC embedded inductors; S-parameters; bandwidth; coil coupling; core circuit; finite ground plane; ground resonant frequencies; low-temperature cofired-ceramic substrate; modified-T equivalent circuit; multilayer; resonators; self resonant frequency; three-dimensional spiral inductors; transmission line; Bandwidth; Coils; Coupling circuits; Distributed parameter circuits; Equivalent circuits; Inductors; Nonhomogeneous media; Resonant frequency; Scattering parameters; Transmission line measurements;
fLanguage :
English
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9480
Type :
jour
DOI :
10.1109/TMTT.2003.819772
Filename :
1256764
Link To Document :
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