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In this study, the microwave dielectric properties of Zn 2 SnO 4 ceramics prepared by the conventional solid-state method were investigated for application in mobile communication. ZnO–B 2 O 3 –SiO 2 was selected as a liquid sintering aid to reduce the sintering temperature of Zn 2 SnO 4 ceramics. By adding 3.0 wt.% ZnO–B 2 O 3 –SiO 2 , a dielectric constant of 11.44 and a quality factor ( Q × f ) of 33,000 GHz were obtained when Zn 2 SnO 4 ceramics were sintered at 1075 °C for 4 h. The proposed CPW-fed inverted-U shaped monopole antenna has a 6 dB return loss with bandwidth 204 MHz (2371–2575 MHz) in the lower band, 1520 MHz (3130–4650 MHz) in the middle band, and 460 MHz (5250–5710 MHz) in the higher band. |
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