一种多层耦合结构的双波束滤波贴片天线
By using a multi-layered coupled dual-beam filter patch antenna, the dual-beam radiation and filtering functions of single-port excitation are realized through the connection of side-fed microstrip lines and metal pillars. This solves the problems of complex structure, high loss and large size in the existing technology, and achieves a highly efficient and compact dual-beam filtering effect.
CN121097384BActive Publication Date: 2026-07-17NANTONG UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NANTONG UNIV
- Filing Date
- 2025-09-10
- Publication Date
- 2026-07-17
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Figure CN121097384B_ABST
Abstract
本发明公开了一种多层耦合结构的双波束滤波贴片天线，由下而上依次包括：侧馈微带线、第一基板、带通孔的金属地、第二基板、金属条带、第三基板、金属贴片，通过一个金属柱自侧馈微带线垂直贯穿多层结构后与金属条带电气连接，金属柱从金属地上通孔中央穿过。信号通过侧馈微带线和贯穿多层基板的金属柱直接激励金属条带，再由金属条带以耦合方式把能量注入顶层的金属贴片并使其工作于TM02模，实现双波束辐射。金属地的通孔结构强制金属地的电流绕行分路，与TM02模式辐射场叠加，抑制表面波和寄生辐射，减少能量损耗，并与多层基板共同形成带外辐射零点以实现滤波响应。
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