Microwave variable delay line using a membrane impregnated with liquid crystal

Takao Kuki, Hideo Fujikake, Hirokazu Kamoda, Toshihiro Nomoto

Research output: Contribution to journalConference articlepeer-review

31 Citations (Scopus)

Abstract

A microwave variable delay line using a membrane impregnated with liquid crystal was newly fabricated. By employing the membrane impregnated with liquid crystal to the liquid crystal layer of the delay line, the phase-shift response becomes fast independently of the liquid crystal thickness. Experimental results show that the phase-shift response time of 33 ms, which is two orders of magnitude faster than that of a conventional one, is obtained. The new delay line also exhibits a 270-degrees phase-shift and non-dispersive delay characteristics over a wide microwave-frequency range. Moreover, it is clarified that the phase-shift characteristics to a control voltage depend on a pore size of the membrane.

Original languageEnglish
Pages (from-to)363-366
Number of pages4
JournalIEEE MTT-S International Microwave Symposium Digest
Volume1
Publication statusPublished - 2002 Jan 1
Externally publishedYes
Event2002 IEEE MTT-S International Microwave Symposium Digest - Seattle, WA, United States
Duration: 2002 Jun 22002 Jun 7

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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