Research Output
5G microstrip patch antenna and microwave dielectric properties of cold sintered LiWVO6–K2MoO4 composite ceramics
  In this paper, (1-x)LiWVO6-xK2MoO4 (LWVO-KMO, x = 60, 65, 70, 75, 80, 90 wt%) composite ceramics with >92% relative density were prepared by cold sintering at 160 °C under a uniaxial pressure of 300 MPa for 1 h. X-ray diffraction (XRD), Scanning electron microscopy (SEM) and Raman spectroscopy demonstrate that LWVO and KMO coexist without other impurities. (1-x)LWVO-xKMO composite ceramics exhibit relative permittivity (εr) ranging from 6.8 to 8.5, microwave quality factor (Q × f) ranging from 2050 to 7182 GHz, and temperature coefficient of resonant frequency (τf) ranging from −49 to +25 ppm/°C. Based on cold sintered 30 wt%LWVO-70 wt%KMO composite ceramic with εr ~7.8, Q × f ~4514 GHz, and near zero τf ~1.3 ppm/°C, a prototype microstrip patch antenna was designed and manufactured. Through testing, it shows excellent antenna performance with a center frequency of 6.58 GHz, a bandwidth of 170 MHz (−10 dB) and a total efficiency of up to 89.5%.

  • Type:

    Article

  • Date:

    01 April 2021

  • Publication Status:

    Published

  • Publisher

    Elsevier BV

  • DOI:

    10.1016/j.ceramint.2021.03.179

  • Cross Ref:

    10.1016/j.ceramint.2021.03.179

  • ISSN:

    0272-8842

  • Funders:

    National Natural Science Foundation of China

Citation

Ma, M., Song, K., Ji, Y., Hussain, F., Khesro, A., Mao, M., …Sun, S. (2021). 5G microstrip patch antenna and microwave dielectric properties of cold sintered LiWVO6–K2MoO4 composite ceramics. Ceramics International, 47(13), 19241-19246. https://doi.org/10.1016/j.ceramint.2021.03.179

Authors

Keywords

Cold sintering process, LiWVO6, K2MoO4, Microstrip patch antenna

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