Co₂Z, a magneto-dielectric ferrite, has the potential to be used in the study of antenna miniaturization. The solid-state reaction method was employed to synthesize a series of Ba_1.5Sr_1.5Co₂Mn_xFe_23-xO₄₁ (x = 0.0-1.0) hexaferrites in this paper. The crystal structure, microstructure, magnetic and dielectric properties were tested and investigated. The Mn³⁺ substitution did not introduce a second phase; however, it did influence the magnetic moments, super-exchange interaction, and electron hopping of the hexaferrite. Consequently, the magnetic and dielectric properties were altered, resulting in a decrease in losses. The hexaferrite exhibits superior magneto-dielectric properties when x = 0.4, and the cut-off frequency exceeds 1 GHz. Additionally, both the magnetic and dielectric losses reach their minimum. The design and simulation of a rectangular patch antenna were conducted using Ba_1.5Sr_1.5Co₂Mn_0.4Fe_22.6O₄₁. The results indicate that the patch antenna size was effectively reduced, and the return loss S₁₁ could reach -29.83 dB at 1 GHz. The proposed Mn³⁺ substituted Co₂Z hexaferrite has the potential to be of value and use in the design of miniaturized antennas.

中文翻译：

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Mn3+ 取代 Co2Z 六铁体的磁性和介电性能改性用于小型贴片天线


Co₂Z 是一种磁介电铁氧体，具有用于天线小型化研究的潜力。本文采用固相反应法合成了一系列 Ba_1.5Sr_1.5Co₂Mn_xFe_23-x O₄₁ （x = 0.0-1.0） 六铁素体。对晶体结构、微观结构、磁性和介电性能进行了测试和研究。Mn³⁺ 替代品没有引入第二阶段;然而，它确实影响了六铁氧体的磁矩、超交换相互作用和电子跳跃。因此，磁性和介电特性发生了变化，从而减少了损耗。当 x = 0.4 且截止频率超过 1GHz 时，六铁氧体表现出优异的磁介电性能。此外，磁损耗和介电损耗都达到最小。矩形贴片天线的设计和仿真使用 Ba_1.5Sr_1.5Co₂Mn_0.4Fe_22.6O₄₁ 进行。结果表明，贴片天线尺寸得到有效减小，1GHz时回波损耗S₁₁可达-29.83dB。所提出的 Mn³⁺ 取代 Co₂Z 六铁体有可能在小型化天线的设计中具有价值和用途。