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Implementation of a 5-Ghz LTCC bandpass filter using vertically-interdigitated capacitors and via engineering

Authors
Lim, JuHwanJung, DongYunPark, ChulSoonHwang, SungWoo
Issue Date
2월-2008
Publisher
JOHN WILEY & SONS INC
Keywords
low-temperature co-fired ceramic (LTCC); bandpass filter; vertically-interdigitated capacitor
Citation
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, v.50, no.2, pp.339 - 341
Indexed
SCIE
SCOPUS
Journal Title
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
Volume
50
Number
2
Start Page
339
End Page
341
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/124111
DOI
10.1002/mop.23072
ISSN
0895-2477
Abstract
A low-temperature cofired ceramic (LTCC) LC resonator bandpass filter for 5-GHz wireless LAN applications is implemented. The miniaturization of the filter is achieved by utilizing vertically-interdigitated capacitors as resonator capacitors, and the required small inductance (similar to 0.1 nH) is realized by via holes. The inductances of via-holes connecting the capacitor plates also considerably affect the filter characteristics, and they are considered in circuit design stage of the filter. The fabricated bandpass filter has five layers with the size of 2.4 x 4.18 x 0.56 mm(3). The measured center frequency, bandwidth, and insertion loss are 5.32 GHz, 340 MHz, and 2.87 dB, respectively. (c) 2007 Wiley Periodicals, Inc.
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