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1. 发明申请

WO2018073701A1 SINGLE LAYER SHARED APERTURE DUAL BAND ANTENNA 审中-公开
标题翻译：单层共享光孔双波段天线
公开(公告)号：WO2018073701A1
公开(公告)日：2018-04-26
申请号：PCT/IB2017/056308
申请日：2017-10-12
申请人： DIRECTOR GENERAL, DEFENCE RESEARCH & DEVELOPMENT ORGANISATION (DRDO)
发明人： JAIN, Sachin , REDDY G, Siva Rami , RATNA, Pummy , VERMA, Usha P.
IPC分类号： H01Q5/00 , H01Q13/08
摘要： Embodiment of the present disclosure relates to a shared aperture antenna for continuous transmission of signal to ground station at two different spot frequencies. The antenna provides a broad side radiation pattern for frequency range of S band and squinted radiation pattern for frequency range of Ka band. The dual band microstrip antenna is configured on a single layer substrate, having a rectangular slot at small offset from the center on low frequency radiating patch. The positioning of radiating patch and length of high impedance microstrip feed are adjusted to fit into the slot and to get desired squint at high frequency. Two separate coaxial feeds are provided to excite the antenna independently. Third feed fulfil the termination needed by travelling wave array which increases the impedance bandwidth of antenna. A radome is provided to protect the radiating element from environment.
摘要翻译：本公开的实施例涉及用于在两个不同的点频率下连续地传输信号到地面站的共享孔径天线。天线为Ka波段的频率范围提供了S波段频率范围的宽侧辐射方向图和斜视辐射方向图。双频带微带天线配置在单层衬底上，在低频辐射贴片上有一个偏离中心偏离小的矩形槽。调整辐射贴片的位置和高阻抗微带馈送的长度，使其适合插槽并获得所需的高频斜视。提供两个独立的同轴馈电以独立激发天线。第三馈电完成行波阵列所需的终端，增加天线的阻抗带宽。天线罩用于保护辐射元件不受环境影响。

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