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Journal Article A Fully Embedded LTCC Multilayer BPF for 3-D Integration of 40-GHz Radio
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Authors
Yun Hee Cho, Dong Yun Jung, Young Chul Lee, Jae W. Lee, Myung Sun Song, Eun-Soo Nam, Suk Hoon Kang, Chul Soon Park
Issue Date
2007-08
Citation
IEEE Transactions on Advanced Packaging, v.30, no.3, pp.521-525
ISSN
1521-3323
Publisher
IEEE
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1109/TADVP.2007.898587
Abstract
This paper demonstrates a low loss fully embedded multilayer bandpass filter (BPF) using low-temperature cofired ceramic (LTCC) technology for 3-D integration of 40-GHz multimedia wireless system (MWS) radio. The LTCC filter implemented in a stripline configuration occupies an area of only 5.5 × 2.3 × 0.6 mm including shielding structure and coplanar waveguide (CPW) transitions. The measured insertion loss was as small as 1.9 dB at a center frequency of 41.8 GHz, and the return loss was 12.2 dB including the loss associated with two CPW-to-stripline transitions. This six-layer BPF showed 3-dB bandwidth of 10.5% from 39.6 to 44.0 GHz at a center frequency of 41.8 GHz and suppressed the local oscillator (LO) signal to 20.2 dB at a local oscillator frequency of 38.8 GHz, making it suitable for the 40 GHz MWS applications. © 2007 IEEE.