宽频透波滤波低频辐射单元、共口径天线阵列及通信设备

• Format: Patent
• Language: Chinese
• Published: 09.08.2024
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; ELECTRICITY

本发明公开了一种宽频透波/滤波辐射单元、共口径天线阵列及通信设备，所述辐射单元包括辐射结构和馈电结构，辐射结构和馈电结构采用耦合馈电的方式，使得辐射结构向外辐射低频电磁波信号，辐射结构包括辐射体，辐射体上加载有多层表面周期结构；当辐射结构工作于第一模式时，高频辐射单元激发的电磁波照射到辐射结构上，辐射体和多层表面周期结构共同构成具有K个谐振点和K个零点的非谐振节点空间带通滤波电路；当辐射结构工作于第二模式时，低频电磁波通过馈电结构激励辐射结构，多层表面周期结构的单元被辐射体以并行方式激励，形成等效滤波电路。本发明可以改善多频段天线方向图的畸形，提高天线增益、带外抑制及其交叉极化比等指标。 A wide-band wave-transmitting/filtering radiation unit, a shared-aperture antenna array, and a communication device are disclosed. The radiation unit includes a radiation structure and a feed structure, where the radiation structure and the feed structure are coupled for feeding, so that the radiation structure radiates low-frequency electromagnetic wave signals outward; the radiation structure includes a radiator, and the radiator is loaded with a plurality of layers of surface periodic structures; when the radiation structure operates in a first mode, electromagnetic waves excited by a high-frequency radiation unit irradiates the radiation structure, and the radiator and the plurality of layers of surface periodic