• Title/Summary/Keyword: Sim-Hak

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A Study on High Voltage and High Current Measurement using Laser (레이저에 의한 고전압 및 대전류 측정에 관한 연구)

  • Gang, Hyeong-Bu;Jeong, Un-Gwan;Jang, Yong-Mu;Choe, Seung-Gil;Sim, Jae-Hak
    • Proceedings of the KIEE Conference
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    • 1988.07a
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    • pp.769-770
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    • 1988
  • The Pockel's effect is well know as a voltage measurement method. This method is applicable to high voltage measurement equipments. We observe the Faraday rotation of the polarization plane in the current-induced magnetic field.

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Design of 1.9GHz Band Drop-In Type Isolator (1.9GHz Band Drop-In Type Isolator 설계)

  • Kim, Jee-Gyun;Lee, Heon-Yong;Lee, Byong-Hak
    • Proceedings of the KIEE Conference
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    • 2000.07c
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    • pp.1536-1538
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    • 2000
  • In this paper, designed and fabricated the 1.9GHz band isolator for wire-less communication base-stations. It was investigated that characteristics of insertion loss and return loss. The characteristic results of dual structure design showed values that insertion loss was about -40dB and return loss was about -23dB at 1.93$\sim$1.99GHz.

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