5G microstrip patch antenna and microwave dielectric properties of cold sintered LiWVO6–K2MoO4 composite ceramics

Ma, Mingtao; Song, Kaixin; Ji, Yuping; Hussain, Fayaz; Khesro, Amir; Mao, Minmin; Xue, Lingyun; Xu, Ping; Liu, Bing; Lu, Zhilun; Zhou, Di; Wang, Dawei; Sun, Shikuan

Abstract

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%.

Citation

Ma, M., Song, K., Ji, Y., Hussain, F., Khesro, A., Mao, M., Xue, L., Xu, P., Liu, B., Lu, Z., Zhou, D., Wang, D., & 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

• Journal Article Type: Article
• Acceptance Date: Mar 18, 2021
• Online Publication Date: Apr 1, 2021
• Publication Date: 2021-07
• Deposit Date: Oct 23, 2021
• Journal: Ceramics International
• Print ISSN: 0272-8842
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 47
• Issue: 13
• Pages: 19241-19246
• DOI: https://doi.org/10.1016/j.ceramint.2021.03.179
• Keywords: Cold sintering process, LiWVO6, K2MoO4, Microstrip patch antenna
• Public URL: http://researchrepository.napier.ac.uk/Output/2815943