Journal of Materials Science: Materials in Electronics ( IF 2.8 ) Pub Date : 2020-01-20 , DOI: 10.1007/s10854-020-02899-6 Yih-Chien Chen , Yu-Cheng You
Abstract
The series of La(Mg0.5−xNixSn0.5)O3 microwave ceramics were investigated for application in sub-6 GHz patch array antenna. The microwave dielectric characteristics of La(Mg0.5−xNixSn0.5)O3 ceramics are determined using X-ray diffraction patterns, Rietveld refinement, and Raman spectra. As the degree of substitution of Ni2+ increases, the position of the A1g(O) Raman mode shifts toward a higher frequency. The La(Mg0.45Ni0.05Sn0.5)O3 exhibits a minimum full width at half maximum for the A1g(O) Raman vibration mode. At x = 0.05, a permittivity of 19.8 and a quality factor (Q × f) of 104,000 GHz were achieved with a temperature coefficient at the resonant frequency (TCF) of − 87.9 ppm/°C. The proposed sub-6 GHz 2 × 2 patch array antenna has frequencies cover sub-6 GHz band, LTE band 42, and LTE band 43. A 10 dB return loss with bandwidth 848 MHz (3114–3962 MHz) was successfully achieved.
中文翻译:
La(Mg 0.5−x Ni x Sn 0.5)O 3陶瓷的微波频率介电特性,用于6 GHz以下贴片阵列天线
摘要
研究了La(Mg 0.5− x Ni x Sn 0.5)O 3系列微波陶瓷在6 GHz以下贴片阵列天线中的应用。La(Mg 0.5- x Ni x Sn 0.5)O 3陶瓷的微波介电特性是通过X射线衍射图,Rietveld精炼和拉曼光谱确定的。随着Ni 2+的取代度增加,A 1g(O)拉曼模式的位置向更高的频率偏移。La(Mg 0.45 Ni 0.05 Sn 0.5)O 3A 1g(O)拉曼振动模式的最小全宽为一半。在x = 0.05时,在谐振频率(TCF)为− 87.9 ppm /°C的温度系数下,介电常数为19.8,品质因数(Q × f)为104,000 GHz。拟议的6 GHz以下2×2贴片阵列天线的频率覆盖6 GHz以下频段,LTE频段42和LTE频段43。成功实现了10 dB的回波损耗,带宽为848 MHz(3114–3962 MHz)。