Scholarlink

<p>With the rapid development of 5G communication technology, higher requirements have been imposed on microwave dielectric ceramic materials. Ceramic materials with low dielectric constant, excellent temperature stability, and low sintering temperature have become current research focus. In this study, (1-<i>x</i>)Li<sub>2</sub>MoO<sub>4</sub>-<i>x</i>BaV<sub>2</sub>O<sub>6</sub> (LM-<i>x</i>BV, <i>x</i> = 0.7, 0.78, 0.8, 0.9) ceramics were successfully prepared via the solid-state reaction method, and their microstructures, microwave dielectric properties and antenna simulation were investigated. XRD and Raman spectroscopy confirmed the coexistence of BaV<sub>2</sub>O<sub>6</sub>, BaMoO<sub>4</sub> and LiVO<sub>3</sub> phases in all LM-BV systems. Bulk density, <i>Q</i> × <i>f</i> and <i>τ</i><sub><i>f</i></sub> values approximately increased, and <i>ε</i><sub><i>r</i></sub> decreased, with BV contents increased at optimum sintering temperature. LM-0.8BV ceramic was obtained with excellent microwave dielectric properties of <i>ε</i><sub><i>r</i></sub> = 9.32, <i>Q</i> × <i>f</i> = 11246.3 GHz and <i>τ</i><sub><i>f</i></sub> = 2.8 ppm/&#xa0;℃. The DRA designed based on Li<sub>2</sub>MoO<sub>4</sub>-0.8BaV<sub>2</sub>O<sub>6</sub> ceramics demonstrated excellent performance at 7.88 GHz, including a return loss of ~ -33.51 dB, high efficiency (~ 95%), a peak gain of ~ 7.3 dB, and a bandwidth of 500 MHz. These results indicated that the material had promising potential for applications in microwave devices within Low-Temperature Co-fired Ceramic (LTCC) technology.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Microwave dielectric properties and antenna simulation of Li2MoO4-BaV2O6 ceramics with low sintering temperature

  • 期刊论文

  • 发表日期：

    2025年11月24日

查看全文
  • Fanjun Zeng,
  • Liufang Meng,
  • Changlai Yuan,
  • Baohua Zhu,
  • Xiao Liu,
  • Hequn Xiao,
  • Jianwang Wu,
  • Changrong Zhou,
  • Guohua Chen

摘要

With the rapid development of 5G communication technology, higher requirements have been imposed on microwave dielectric ceramic materials. Ceramic materials with low dielectric constant, excellent temperature stability, and low sintering temperature have become current research focus. In this study, (1-x)Li2MoO4-xBaV2O6 (LM-xBV, x = 0.7, 0.78, 0.8, 0.9) ceramics were successfully prepared via the solid-state reaction method, and their microstructures, microwave dielectric properties and antenna simulation were investigated. XRD and Raman spectroscopy confirmed the coexistence of BaV2O6, BaMoO4 and LiVO3 phases in all LM-BV systems. Bulk density, Q × f and τf values approximately increased, and εr decreased, with BV contents increased at optimum sintering temperature. LM-0.8BV ceramic was obtained with excellent microwave dielectric properties of εr = 9.32, Q × f = 11246.3 GHz and τf = 2.8 ppm/ ℃. The DRA designed based on Li2MoO4-0.8BaV2O6 ceramics demonstrated excellent performance at 7.88 GHz, including a return loss of ~ -33.51 dB, high efficiency (~ 95%), a peak gain of ~ 7.3 dB, and a bandwidth of 500 MHz. These results indicated that the material had promising potential for applications in microwave devices within Low-Temperature Co-fired Ceramic (LTCC) technology.