A compact LTCC branch-line coupler using modified-T equivalent-circuit model for transmission line

Tsung Nan Kuo, Yo Shen Lin, Chi Hsueh Wang, Chun Hsiung Chen

Research output: Contribution to journalArticlepeer-review

50 Scopus citations

Abstract

In this letter, a compact branch-line coupler is proposed by making good use of the three-dimensional layout capability of the low-temperature co-fired ceramic (LTCC) substrate. This branch-line coupler is accomplished by using lumped-inductors and lumped-capacitors to realize the modifled-T equivalent-circuit model for the transmission line so that the circuit size may drastically be reduced. Specifically, a very compact LTCC branch-line coupler with a size of 0.079λ × 0.0717λ is implemented and carefully examined, where λ is the wavelength of the multilayer structure at the operating frequency f 0.

Original languageEnglish
Pages (from-to)90-92
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Volume16
Issue number2
DOIs
StatePublished - Feb 2006

Keywords

  • Branch-line coupler
  • Low-temperature co-fired ceramic (LTCC)

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