The Korean Journal of Ceramics

한국세라믹학회 (The Korean Ceramic Society)
권호 표지

Relationship between Magnetic Properties of YIG Ferrites and Intermodulation Characteristics of Microwave Isolators

  • Nukaga, Masako (Materials Research Center, TDK Corporation Aza-Matsugashita Minami-Hatori) ;
  • Henmi, Sakae (Materials Research Center, TDK Corporation Aza-Matsugashita Minami-Hatori)
  • 발행 : 2000.09.01
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초록

The generation of the intermodulation noises in microwave isolators has been studied in relation to the characteristics of YIG ferrites designed for this application. We have investigated the influences of porosity and crystalline anisotropy related to the magnetic loss, which causes the generation of intermodulation signals. The power dependence of the intermodulation power level is stressed as the crystalline anisotropy decreases. These results are consistent with the nonlinear effects of a single normal mode before the excitation of the spin-waves. It also appears that this power level is proportional to the magnitude of dc bias magnetic field.

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참고문헌

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