Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Analysis and Experiment of Micro-strip Line Lumped Elements for SAW Duplexers

탄성표면파 듀플렉서용 마이크로 스트립라인 집중소자 해석 및 실험

  • Published : 2002.01.01
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Abstract

In this study, we analyzed and experimented micro-strip line inductors and capacitors for a SAW duplexer, an important devise for mobile communication. For SAW duplexers, micro-strip line lumped elements must have small impedance values, below several tens of nH or several tens of pF, and a small area pattern. In this study, we performed theoretical analysis of flat line type, meander line type, and spiral line type inductors and interdigital capacitors on a LiTaO$_3$ Piezo-crystal. We proposed a measurement method to evaluate small values of lumped elements accurately with network analyzer. In experiments, we confirmed validity of the theoretical analysis method through fabrication and characterization of micro-strip line lumped elements. The analysis method in this paper can be applied to SAW duplexers well as other microwave devices.

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References

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  1. Development of a SAW duplexer with one-chip isolation circuits vol.42, pp.1-9, 2004, https://doi.org/10.1016/j.ultras.2004.01.036