New Tunable Microwave Ba0.6Sr0.4TiO3/MgO Phase Shifters Using Interdigital Capacitors and Slit-Inductors

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概要

• 論文の詳細を見る

• In this paper, we report on the role of slit-inductors in notably improving phase shifting capabilities in Ba0.6Sr0.4TiO3 (BST) tunable phase shifters utilizing interdigital capacitor (IDC) structure. The IDC-based coplanar waveguide (CPW) phase shifter with slit-inductors fabricated on (100) oriented BST films deposited on MgO substrates exhibits a much enhanced phase difference of 35.52°, as compared to that (25.23°) of the IDC-based phase shifter at 12 GHz. The figure of merit (FoM) of the IDC-based phase shifters with slit-inductors shows larger value of 43.60°/dB as a result of improving phase shifting while retaining an appropriate insertion loss compared to that (35.67°/dB) of the IDC-based phase shifter without slit-inductor. This work demonstrates potential use of slit-inductors for producing high-performance CPW based BST tunable elements in microwave circuit.

• 2007-08-15

著者

• LEE Jong-Chul

  RFIC Center, Kwangwoon University

• Yun Tae-soon

  Rfic Center Kwangwoon University

• Kim Il-Doo

  Center for Energy Materials Research, Korea Institute of Science and Technology, P. O. Box 131 Cheongryang, Seoul 130-650, Republic of Korea

• Kim Ki-Byoung

  Intelligent Radio Engineering Center, Information and Communication University, 103-6 Munji-dong, Yuseong-Gu, Daejeon 305-732, Republic of Korea

• Kim Hyun-Suk

  Depatment of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, U.S.A.

• Lee Jong-Chul

  RFIC Research and Education Center, Kwangwoon University, 447-1 Wolgye-dong, Nowon-ku, Seoul 139-701, Republic of Korea

• Kim Ho-Gi

  Depatment of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Daejeon 305-701, Republic of Korea

• Yun Tae-Soon

  RFIC Research and Education Center, Kwangwoon University, 447-1 Wolgye-dong, Nowon-ku, Seoul 139-701, Republic of Korea

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• A New Micromachined Bandpass Filter on a Quartz Substrate
• New Tunable Microwave Ba0.6Sr0.4TiO3/MgO Phase Shifters Using Interdigital Capacitors and Slit-Inductors
• Millimeter-Wave GaAs Surface Micromachined Bandpass Filters Using the External Quality Factor

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