https://scholars.lib.ntu.edu.tw/handle/123456789/351842
Title: | Miniaturized bandpass filters with double-folded substrate integrated waveguide resonators in LTCC | Authors: | H.-Y. Chien T.-M. Shen T.-Y. Huang RUEY-BEEI WU |
Keywords: | Bandpass filter; Cavity; Coupling coefficient; Folded waveguide resonator; Low-temperature co-fired ceramic (LTCC); Miniaturized filter | Issue Date: | Jul-2009 | Journal Volume: | 57 | Journal Issue: | 7 | Start page/Pages: | 1774-1782 | Source: | IEEE Transactions on Microwave Theory and Techniques | Abstract: | This paper proposes miniaturized bandpass filters with double-folded substrate integrated waveguide (SIW) resonators using multilayer low-temperature co-fired ceramic (LTCC) technology. Formed by inserting a metal plate with two orthogonal slots into the cavity, the double-folded SIW resonator is used for the circuit size reduction with its footprint about a quarter of the conventional TE101 mode. With LTCC technology, there is more flexibility to organize the cavities of filters because of the 3-D arrangement. The vertically stacked cavities are coupled by "L"- or "U"-shaped slots, and if arranged horizontally, by an inductive window on the common sidewall or a suspended stripline between the cavities. Through experimental measurements and simulations at both the Ka- V -bands, it has been demonstrated that the proposed filter has compact sizes and good frequency responses. The area of the fully stacked Chebyshev filter has 88% size reduction in comparison with a three-pole planar waveguide filter, while the vertically stacked quasi-elliptic filter has 74% size reduction in comparison with a four-pole planar waveguide filter. © 2006 IEEE. |
URI: | http://scholars.lib.ntu.edu.tw/handle/123456789/351842 https://www.scopus.com/inward/record.uri?eid=2-s2.0-68349123659&doi=10.1109%2fTMTT.2009.2022591&partnerID=40&md5=c7b8507cae00df0148f96f76acd2aed3 |
ISSN: | 00189480 | DOI: | 10.1109/TMTT.2009.2022591 | SDG/Keyword: | Cavity; Coupling coefficient; Folded waveguide resonator; Low-temperature co-fired ceramic (LTCC); Miniaturized filter; Ceramic materials; Circular waveguides; Frequency bands; Frequency response; IIR filters; Microwave circuits; Planar waveguides; Plate metal; Poles; Resonators; Size determination; Three dimensional; Wave filters; Windows; Bandpass filters |
Appears in Collections: | 電機工程學系 |
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