A study on MgO-Ta2O5 system ceramics for microwave component application (Electron devices: 第15回先端半導体デバイスの基礎と応用に関するアジア・太平洋ワークショップ(AWAD2007))

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概要

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• In this study, the microwave dielectric properties of the Mg_4Ta_2O_9 and Mg_5Ta_4O_<15> ceramics with composition ratio and sintering temperature were investigated and the dielectric resonators with these ceramics were simulated. TiO_2 was doped in Mg_4Ta_2O_9 ceramics for improvement of temperature property. All specimens of the (1-x)Mg_4Ta_2O_9-xTiO_2 and Mg_5Ta_4O_<15> ceramics were prepared by solid-state reaction method and sintered. According to the X-ray diffraction data, the (1-x)Mg_4Ta_2O_9-xTiO_2 ceramics had main phase of the Mg_4Ta_2O_9 and the MgTi_2O_5 peaks were appeared by the addition of TiO_2. In the Mg_5Ta_4O_<15> ceramics, the Mg_4Ta_2O_9 and MgTa_2O_6 phase coexisted and Mg_5Ta_4O_<15> phase was appeared with increasing the sintering temperature. Microwave dielectric properties of the (1-x)Mg_4Ta_2O_<9-x>TiO_2 ceramics were affected by MgTi_2O_5 and TiO_2 phase. The quality factor had a little decrement compared to pure Mg_4Ta_2O_9, but there was excellent improvement in temperature coefficient of resonant frequency (TCRF) by addition of TiO_2. Densification of the Mg_4Ta_2O_9 and MgTa_2O_6 and existence of the Mg_5Ta_4O_<15> phase had influence on the microwave dielectric properties of the Mg_5Ta_4O_<15> ceramics. The dielectric constant, quality factor and TCRF of the (1-x)Mg_4Ta_2O_9-xTiO_2 and Mg_5Ta_4O_<15> ceramics sintered at 1450℃ were 11.56〜22.5, 24,980〜186,410 GHz, -36.02〜+19.72 ppm/℃ and 8.2, 89,473 GHz, -10.91 ppm/℃, respectively. Advanced Design System (ADS) was used for simulation of DR. The simulated DR with the 0.5Mg_4Ta_2O_9-0.5TiO_2 and Mg_5Ta_4O_<15> ceramics had the operating frequency and S_<21> of 11.97 GHz, -35.034 dB and of 10.50 GHz, -28.493 dB, respectively.

• 社団法人電子情報通信学会の論文
• 2007-06-18

著者

• Choi Eui‐sun

  Kwangwoon Univ. Seoul Kor

• Jae-Sik Jae-Sik

  Electronic Materials Engineering, Kwangwoon University

• Lee Young-Hie

  Electronic Materials Engineering, Kwangwoon University

• Choi Eui-Sun

  Electronic Materials Engineering, Kwangwoon University

• Ryu Ki-Won

  Electronic Engineering, Yeojoo College

• Choi Eui-sun

  Electronic Materials Engineering Kwangwoon University

• Lee Young-hie

  Electronic Materials Engineering Kwangwoon University

• RYU Ki-Won

  Yeojoo College

• Kim Jae-Sik

  Electronic Materials Engineering, Kwangwoon University

• Jae-sik Jae-sik

  Electronic Materials Engineering Kwangwoon University

関連論文

• A study on MgO-Ta2O5 system ceramics for microwave component application (Electron devices: 第15回先端半導体デバイスの基礎と応用に関するアジア・太平洋ワークショップ(AWAD2007))
• A study on MgO-Ta2O5 system ceramics for microwave component application (Silicon devices and materials: 第15回先端半導体デバイスの基礎と応用に関するアジア・太平洋ワークショップ(AWAD2007))
• A Study on MgO-Ta_2O_5 System Ceramics for Microwave Component Application
• Microwave dielectric properties of Mg4Ta2O9 ceramics with TiO2 for DRO (Electron devices: 第15回先端半導体デバイスの基礎と応用に関するアジア・太平洋ワークショップ(AWAD2007))
• Microwave dielectric properties of Mg4Ta2O9 ceramics with TiO2 for DRO (Silicon devices and materials: 第15回先端半導体デバイスの基礎と応用に関するアジア・太平洋ワークショップ(AWAD2007))

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