A compact LTCC ultra-wideband bandpass filter using semi-lumped parallel-resonance circuits for spurious suppression

Chung Hwa Wu, Yo Shen Lin, Chi Hsueh Wang, Chun Hsiung Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

20 Scopus citations

Abstract

A very compact ultra-wideband (UWB) bandpass filter with both high selectivity and suppressed spurious passband is implemented in the low-temperature co-fired ceramic (LTCC) substrate. By using the optimum distributed highpass Alter structure of 11th-order, an ultra-wideband filter with the bandwidth from 3.1GHz to 10.6GHz is realized. In this study, the semi-lumped parallel resonance circuits are adopted in conjunction with the optimum distributed highpass filter, so that two finite transmission zeros may be created to suppress the spurious passband. The implemented filter exhibits a good frequency response to meet the Federal Communication Committee's (FCC's) limit and has a very compact size of 0.22λg × 0.187λg × 0.0246λg (4.2mm × 3.5mm × 0.46mm), where λg is the guided wavelength of the multilayer structure at 6.85GHz.

Original languageEnglish
Title of host publicationProceedings of the 37th European Microwave Conference, EUMC
Pages532-535
Number of pages4
DOIs
StatePublished - 2007
Event37th European Microwave Conference, EUMC - Munich, Germany
Duration: 9 Oct 200712 Oct 2007

Publication series

NameProceedings of the 37th European Microwave Conference, EUMC

Conference

Conference37th European Microwave Conference, EUMC
Country/TerritoryGermany
CityMunich
Period9/10/0712/10/07

Keywords

  • Bandpass filter
  • Low-temperature co-fired ceramic (LTCC)
  • Ultra-wideband (UWB)

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